{"id":3796,"date":"2023-02-24T20:23:27","date_gmt":"2023-02-24T20:23:27","guid":{"rendered":"https:\/\/climatescience2030.com\/lelimination-du-dioxyde-de-carbone-quest-ce-que-cest\/"},"modified":"2023-03-21T16:15:58","modified_gmt":"2023-03-21T16:15:58","slug":"lelimination-du-dioxyde-de-carbone-quest-ce-que-cest","status":"publish","type":"post","link":"https:\/\/climatescience2030.com\/fr\/lelimination-du-dioxyde-de-carbone-quest-ce-que-cest\/","title":{"rendered":"L\u2019\u00e9limination du dioxyde de carbone, qu\u2019est-ce que c\u2019est ?"},"content":{"rendered":"[vc_row type=&#8221;in_container&#8221; full_screen_row_position=&#8221;middle&#8221; column_margin=&#8221;none&#8221; column_direction=&#8221;default&#8221; column_direction_tablet=&#8221;default&#8221; column_direction_phone=&#8221;default&#8221; bg_image=&#8221;2746&#8243; bg_position=&#8221;left top&#8221; background_image_loading=&#8221;default&#8221; bg_repeat=&#8221;no-repeat&#8221; scene_position=&#8221;center&#8221; top_padding=&#8221;12%&#8221; constrain_group_1=&#8221;yes&#8221; bottom_padding=&#8221;12%&#8221; text_color=&#8221;light&#8221; text_align=&#8221;center&#8221; row_border_radius=&#8221;none&#8221; row_border_radius_applies=&#8221;bg&#8221; overflow=&#8221;visible&#8221; id=&#8221;culture&#8221; overlay_strength=&#8221;0.3&#8243; gradient_direction=&#8221;left_to_right&#8221; shape_divider_position=&#8221;bottom&#8221; bg_image_animation=&#8221;none&#8221; gradient_type=&#8221;default&#8221; shape_type=&#8221;&#8221;][vc_column constrain_group_100=&#8221;yes&#8221; constrain_group_101=&#8221;yes&#8221; column_element_direction_desktop=&#8221;default&#8221; column_element_spacing=&#8221;default&#8221; desktop_text_alignment=&#8221;default&#8221; tablet_text_alignment=&#8221;default&#8221; phone_text_alignment=&#8221;default&#8221; background_color_opacity=&#8221;1&#8243; background_hover_color_opacity=&#8221;1&#8243; column_backdrop_filter=&#8221;none&#8221; column_shadow=&#8221;none&#8221; column_border_radius=&#8221;none&#8221; column_link_target=&#8221;_self&#8221; column_position=&#8221;default&#8221; gradient_direction=&#8221;left_to_right&#8221; overlay_strength=&#8221;0.3&#8243; width=&#8221;1\/1&#8243; tablet_width_inherit=&#8221;default&#8221; animation_type=&#8221;default&#8221; bg_image_animation=&#8221;none&#8221; border_type=&#8221;simple&#8221; column_border_width=&#8221;none&#8221; column_border_style=&#8221;solid&#8221; column_padding_type=&#8221;advanced&#8221; gradient_type=&#8221;default&#8221;][nectar_highlighted_text color_type=&#8221;regular&#8221; highlight_color=&#8221;#cddb23&#8243; text_color=&#8221;#000000&#8243; style=&#8221;full_text&#8221; highlight_expansion=&#8221;default&#8221;]\n<h1><em><b>L\u2019\u00e9limination du dioxyde de carbone, qu\u2019est-ce que c\u2019est ?<\/b><\/em><\/h1>\n[\/nectar_highlighted_text][\/vc_column][\/vc_row][vc_row type=&#8221;in_container&#8221; full_screen_row_position=&#8221;middle&#8221; column_margin=&#8221;default&#8221; column_direction=&#8221;default&#8221; column_direction_tablet=&#8221;default&#8221; column_direction_phone=&#8221;default&#8221; scene_position=&#8221;center&#8221; top_padding=&#8221;6%&#8221; bottom_padding=&#8221;3%&#8221; left_padding_desktop=&#8221;18%&#8221; constrain_group_2=&#8221;yes&#8221; right_padding_desktop=&#8221;18%&#8221; left_padding_tablet=&#8221;0&#8243; constrain_group_4=&#8221;yes&#8221; right_padding_tablet=&#8221;0&#8243; left_padding_phone=&#8221;0&#8243; right_padding_phone=&#8221;0&#8243; text_color=&#8221;dark&#8221; text_align=&#8221;left&#8221; row_border_radius=&#8221;none&#8221; row_border_radius_applies=&#8221;bg&#8221; overflow=&#8221;visible&#8221; overlay_strength=&#8221;0.3&#8243; gradient_direction=&#8221;left_to_right&#8221; shape_divider_position=&#8221;bottom&#8221; bg_image_animation=&#8221;none&#8221; gradient_type=&#8221;default&#8221; shape_type=&#8221;&#8221;][vc_column column_padding=&#8221;no-extra-padding&#8221; column_padding_tablet=&#8221;inherit&#8221; column_padding_phone=&#8221;inherit&#8221; column_padding_position=&#8221;all&#8221; column_element_direction_desktop=&#8221;default&#8221; column_element_spacing=&#8221;default&#8221; desktop_text_alignment=&#8221;default&#8221; tablet_text_alignment=&#8221;default&#8221; phone_text_alignment=&#8221;default&#8221; background_color_opacity=&#8221;1&#8243; background_hover_color_opacity=&#8221;1&#8243; column_backdrop_filter=&#8221;none&#8221; column_shadow=&#8221;none&#8221; column_border_radius=&#8221;none&#8221; column_link_target=&#8221;_self&#8221; column_position=&#8221;default&#8221; gradient_direction=&#8221;left_to_right&#8221; overlay_strength=&#8221;0.3&#8243; width=&#8221;1\/1&#8243; tablet_width_inherit=&#8221;default&#8221; animation_type=&#8221;default&#8221; bg_image_animation=&#8221;none&#8221; border_type=&#8221;simple&#8221; column_border_width=&#8221;none&#8221; column_border_style=&#8221;solid&#8221;][vc_column_text]\n<h2>Pour \u00e9viter des niveaux de r\u00e9chauffement dangereux, nous devons r\u00e9duire nos \u00e9missions rapidement et en profondeur. Or, comme nous retardons la mise en place de mesures depuis des d\u00e9cennies, la r\u00e9duction des \u00e9missions pourrait ne plus suffire.<\/h2>\n[\/vc_column_text][\/vc_column][\/vc_row][vc_row type=&#8221;in_container&#8221; full_screen_row_position=&#8221;middle&#8221; column_margin=&#8221;default&#8221; column_direction=&#8221;default&#8221; column_direction_tablet=&#8221;default&#8221; column_direction_phone=&#8221;default&#8221; scene_position=&#8221;center&#8221; bottom_padding=&#8221;6%&#8221; left_padding_desktop=&#8221;18%&#8221; constrain_group_2=&#8221;yes&#8221; right_padding_desktop=&#8221;18%&#8221; left_padding_tablet=&#8221;0&#8243; constrain_group_4=&#8221;yes&#8221; right_padding_tablet=&#8221;0&#8243; left_padding_phone=&#8221;0&#8243; right_padding_phone=&#8221;0&#8243; text_color=&#8221;dark&#8221; text_align=&#8221;left&#8221; row_border_radius=&#8221;none&#8221; row_border_radius_applies=&#8221;bg&#8221; overflow=&#8221;visible&#8221; overlay_strength=&#8221;0.3&#8243; gradient_direction=&#8221;left_to_right&#8221; shape_divider_position=&#8221;bottom&#8221; bg_image_animation=&#8221;none&#8221; gradient_type=&#8221;default&#8221; shape_type=&#8221;&#8221;][vc_column column_padding=&#8221;no-extra-padding&#8221; column_padding_tablet=&#8221;inherit&#8221; column_padding_phone=&#8221;inherit&#8221; column_padding_position=&#8221;all&#8221; column_element_direction_desktop=&#8221;default&#8221; column_element_spacing=&#8221;default&#8221; desktop_text_alignment=&#8221;default&#8221; tablet_text_alignment=&#8221;default&#8221; phone_text_alignment=&#8221;default&#8221; background_color_opacity=&#8221;1&#8243; background_hover_color_opacity=&#8221;1&#8243; column_backdrop_filter=&#8221;none&#8221; column_shadow=&#8221;none&#8221; column_border_radius=&#8221;none&#8221; column_link_target=&#8221;_self&#8221; column_position=&#8221;default&#8221; gradient_direction=&#8221;left_to_right&#8221; overlay_strength=&#8221;0.3&#8243; width=&#8221;1\/1&#8243; tablet_width_inherit=&#8221;default&#8221; animation_type=&#8221;default&#8221; bg_image_animation=&#8221;none&#8221; border_type=&#8221;simple&#8221; column_border_width=&#8221;none&#8221; column_border_style=&#8221;solid&#8221;][vc_column_text]<span style=\"font-weight: 400;\">La r\u00e9ponse mondiale au probl\u00e8me du changement climatique d\u00e9pend \u00e0 la fois de nos choix politiques et \u00e9conomiques et des contraintes physiques du syst\u00e8me climatique, notamment de l\u2019effet de serre lui-m\u00eame. Tant que nous \u00e9mettrons du dioxyde de carbone et d\u2019autres gaz \u00e0 effet de serre dans l\u2019atmosph\u00e8re, nous renforcerons la pression sur le climat tout en r\u00e9duisant la liste des choix politiques possibles. Comme nous l\u2019avons vu dans l\u2019article d\u2019explication du budget carbone [explainer on carbon budgets] <\/span><span style=\"font-weight: 400;\">(link)<\/span><span style=\"font-weight: 400;\">nous ne pouvons \u00e9mettre qu\u2019une quantit\u00e9 finie de GES avant de d\u00e9passer les limites de s\u00e9curit\u00e9 de l\u2019augmentation de temp\u00e9rature. Si nous d\u00e9passons ce budget, les g\u00e9n\u00e9rations actuelles et futures devront certainement payer l\u2019addition : diff\u00e9rentes cons\u00e9quences sur le climat. [various climate impacts] <\/span><span style=\"font-weight: 400;\">(link).<\/span>[\/vc_column_text][vc_column_text]<span style=\"font-weight: 400;\">La physique derri\u00e8re ce probl\u00e8me offre aussi des solutions potentielles. Ainsi, si le CO2 rejet\u00e9 dans l\u2019atmosph\u00e8re par les centrales ou les transports r\u00e9chauffe la plan\u00e8te, alors l\u2019enlever peut compenser, limiter, ou m\u00eame inverser, l\u2019augmentation des temp\u00e9ratures. C\u2019est l\u2019id\u00e9e appliqu\u00e9e par les technologies d\u2019\u00e9limination du dioxyde de carbone (CDR). Aujourd\u2019hui, apr\u00e8s des ann\u00e9es de progr\u00e8s insuffisants en mati\u00e8re de changement climatique, cette solution potentielle int\u00e9resse de plus en plus.<\/span>[\/vc_column_text][vc_column_text]<span style=\"font-weight: 400;\">Actuellement, la CDR figure dans de nombreux plans et promesses de \u00ab neutralit\u00e9 carbone \u00bb qui permettraient d\u2019annuler certaines \u00e9missions de gaz \u00e0 effet de serre pass\u00e9es ou futures en les compensant par des \u00e9liminations, souvent \u00e0 un autre endroit. Elle intervient aussi dans les \u00ab sc\u00e9narios de d\u00e9passement \u00bb qui pr\u00e9voient un d\u00e9passement temporaire des limites de temp\u00e9rature de l\u2019Accord de Paris, \u00e0 cause d\u2019une r\u00e9duction trop lente des \u00e9missions. Dans ces cas de figure, la CDR nous permet de revenir dans la \u00ab zone de s\u00e9curit\u00e9 \u00bb plus tard dans le si\u00e8cle, en rendant toutes nos \u00e9missions de CO2 n\u00e9gatives gr\u00e2ce \u00e0 une \u00e9limination sup\u00e9rieure \u00e0 nos \u00e9missions.<\/span>[\/vc_column_text][\/vc_column][\/vc_row][vc_row type=&#8221;in_container&#8221; full_screen_row_position=&#8221;middle&#8221; column_margin=&#8221;default&#8221; column_direction=&#8221;default&#8221; column_direction_tablet=&#8221;default&#8221; column_direction_phone=&#8221;default&#8221; scene_position=&#8221;center&#8221; bottom_padding=&#8221;3%&#8221; left_padding_desktop=&#8221;6%&#8221; right_padding_desktop=&#8221;18%&#8221; left_padding_tablet=&#8221;0&#8243; constrain_group_4=&#8221;yes&#8221; right_padding_tablet=&#8221;0&#8243; left_padding_phone=&#8221;0&#8243; right_padding_phone=&#8221;0&#8243; text_color=&#8221;dark&#8221; text_align=&#8221;left&#8221; row_border_radius=&#8221;none&#8221; row_border_radius_applies=&#8221;bg&#8221; overflow=&#8221;visible&#8221; overlay_strength=&#8221;0.3&#8243; gradient_direction=&#8221;left_to_right&#8221; shape_divider_position=&#8221;bottom&#8221; bg_image_animation=&#8221;none&#8221; gradient_type=&#8221;default&#8221; shape_type=&#8221;&#8221;][vc_column column_padding=&#8221;no-extra-padding&#8221; column_padding_tablet=&#8221;inherit&#8221; column_padding_phone=&#8221;inherit&#8221; column_padding_position=&#8221;all&#8221; column_element_direction_desktop=&#8221;default&#8221; column_element_spacing=&#8221;default&#8221; desktop_text_alignment=&#8221;default&#8221; tablet_text_alignment=&#8221;default&#8221; phone_text_alignment=&#8221;default&#8221; background_color_opacity=&#8221;1&#8243; background_hover_color_opacity=&#8221;1&#8243; column_backdrop_filter=&#8221;none&#8221; column_shadow=&#8221;none&#8221; column_border_radius=&#8221;none&#8221; column_link_target=&#8221;_self&#8221; column_position=&#8221;default&#8221; gradient_direction=&#8221;left_to_right&#8221; overlay_strength=&#8221;0.3&#8243; width=&#8221;1\/1&#8243; tablet_width_inherit=&#8221;default&#8221; animation_type=&#8221;default&#8221; bg_image_animation=&#8221;none&#8221; border_type=&#8221;simple&#8221; column_border_width=&#8221;none&#8221; column_border_style=&#8221;solid&#8221;][vc_column_text]\n<h2><b>Est-il r\u00e9ellement possible de pr\u00e9lever le CO2 dans l\u2019atmosph\u00e8re ?<\/b><\/h2>\n[\/vc_column_text][\/vc_column][\/vc_row][vc_row type=&#8221;in_container&#8221; full_screen_row_position=&#8221;middle&#8221; column_margin=&#8221;default&#8221; column_direction=&#8221;default&#8221; column_direction_tablet=&#8221;default&#8221; column_direction_phone=&#8221;default&#8221; scene_position=&#8221;center&#8221; bottom_padding=&#8221;3%&#8221; left_padding_desktop=&#8221;18%&#8221; constrain_group_2=&#8221;yes&#8221; right_padding_desktop=&#8221;18%&#8221; left_padding_tablet=&#8221;0&#8243; constrain_group_4=&#8221;yes&#8221; right_padding_tablet=&#8221;0&#8243; left_padding_phone=&#8221;0&#8243; right_padding_phone=&#8221;0&#8243; text_color=&#8221;dark&#8221; text_align=&#8221;left&#8221; row_border_radius=&#8221;none&#8221; row_border_radius_applies=&#8221;bg&#8221; overflow=&#8221;visible&#8221; overlay_strength=&#8221;0.3&#8243; gradient_direction=&#8221;left_to_right&#8221; shape_divider_position=&#8221;bottom&#8221; bg_image_animation=&#8221;none&#8221; gradient_type=&#8221;default&#8221; shape_type=&#8221;&#8221;][vc_column column_padding=&#8221;no-extra-padding&#8221; column_padding_tablet=&#8221;inherit&#8221; column_padding_phone=&#8221;inherit&#8221; column_padding_position=&#8221;all&#8221; column_element_direction_desktop=&#8221;default&#8221; column_element_spacing=&#8221;default&#8221; desktop_text_alignment=&#8221;default&#8221; tablet_text_alignment=&#8221;default&#8221; phone_text_alignment=&#8221;default&#8221; background_color_opacity=&#8221;1&#8243; background_hover_color_opacity=&#8221;1&#8243; column_backdrop_filter=&#8221;none&#8221; column_shadow=&#8221;none&#8221; column_border_radius=&#8221;none&#8221; column_link_target=&#8221;_self&#8221; column_position=&#8221;default&#8221; gradient_direction=&#8221;left_to_right&#8221; overlay_strength=&#8221;0.3&#8243; width=&#8221;1\/1&#8243; tablet_width_inherit=&#8221;default&#8221; animation_type=&#8221;default&#8221; bg_image_animation=&#8221;none&#8221; border_type=&#8221;simple&#8221; column_border_width=&#8221;none&#8221; column_border_style=&#8221;solid&#8221;][image_with_animation image_url=&#8221;2750&#8243; image_size=&#8221;full&#8221; animation_type=&#8221;entrance&#8221; animation=&#8221;None&#8221; animation_movement_type=&#8221;transform_y&#8221; hover_animation=&#8221;none&#8221; alignment=&#8221;&#8221; border_radius=&#8221;none&#8221; box_shadow=&#8221;none&#8221; image_loading=&#8221;default&#8221; max_width=&#8221;100%&#8221; max_width_mobile=&#8221;default&#8221;][divider line_type=&#8221;No Line&#8221; custom_height=&#8221;10&#8243;][vc_column_text]<span style=\"font-weight: 400;\">Adam Cohn<\/span>[\/vc_column_text][\/vc_column][\/vc_row][vc_row type=&#8221;in_container&#8221; full_screen_row_position=&#8221;middle&#8221; column_margin=&#8221;default&#8221; column_direction=&#8221;default&#8221; column_direction_tablet=&#8221;default&#8221; column_direction_phone=&#8221;default&#8221; scene_position=&#8221;center&#8221; bottom_padding=&#8221;6%&#8221; left_padding_desktop=&#8221;40%&#8221; right_padding_desktop=&#8221;18%&#8221; left_padding_tablet=&#8221;0&#8243; constrain_group_4=&#8221;yes&#8221; right_padding_tablet=&#8221;0&#8243; left_padding_phone=&#8221;0&#8243; right_padding_phone=&#8221;0&#8243; text_color=&#8221;dark&#8221; text_align=&#8221;left&#8221; row_border_radius=&#8221;none&#8221; row_border_radius_applies=&#8221;bg&#8221; overflow=&#8221;visible&#8221; overlay_strength=&#8221;0.3&#8243; gradient_direction=&#8221;left_to_right&#8221; shape_divider_position=&#8221;bottom&#8221; bg_image_animation=&#8221;none&#8221; gradient_type=&#8221;default&#8221; shape_type=&#8221;&#8221;][vc_column column_padding=&#8221;no-extra-padding&#8221; column_padding_tablet=&#8221;inherit&#8221; column_padding_phone=&#8221;inherit&#8221; column_padding_position=&#8221;all&#8221; column_element_direction_desktop=&#8221;default&#8221; column_element_spacing=&#8221;default&#8221; desktop_text_alignment=&#8221;default&#8221; tablet_text_alignment=&#8221;default&#8221; phone_text_alignment=&#8221;default&#8221; background_color_opacity=&#8221;1&#8243; background_hover_color_opacity=&#8221;1&#8243; column_backdrop_filter=&#8221;none&#8221; column_shadow=&#8221;none&#8221; column_border_radius=&#8221;none&#8221; column_link_target=&#8221;_self&#8221; column_position=&#8221;default&#8221; gradient_direction=&#8221;left_to_right&#8221; overlay_strength=&#8221;0.3&#8243; width=&#8221;1\/1&#8243; tablet_width_inherit=&#8221;default&#8221; animation_type=&#8221;default&#8221; bg_image_animation=&#8221;none&#8221; border_type=&#8221;simple&#8221; column_border_width=&#8221;none&#8221; column_border_style=&#8221;solid&#8221;][vc_column_text]<span style=\"font-weight: 400;\">Non seulement l\u2019extraction du dioxyde de carbone est possible, mais elle a, en un sens, toujours \u00e9t\u00e9 une r\u00e9alit\u00e9. Actuellement, on s\u2019int\u00e9resse \u00e0 plusieurs types de CDR, selon les m\u00e9canismes chimiques utilis\u00e9s pour capturer le gaz \u00e0 effet de serre en question et le mode de stockage du dioxyde de carbone. La photosynth\u00e8se est l\u2019un de ces m\u00e9canismes. C\u2019est le processus naturel qui permet aux plantes et \u00e0 certaines bact\u00e9ries de convertir l\u2019eau, l\u2019\u00e9nergie lumineuse et le dioxyde de carbone en \u00e9nergie chimique, tout en rejetant de l\u2019oxyg\u00e8ne. Gr\u00e2ce \u00e0 la photosynth\u00e8se, l\u2019atmosph\u00e8re de la Terre contient suffisamment d\u2019oxyg\u00e8ne pour permettre \u00e0 des formes de vies complexes, comme les \u00eatres humains, d\u2019exister. C\u2019est aussi de cette fa\u00e7on que les organismes vivants se transforment en puits de carbone : ils capturent et stockent plus de la moiti\u00e9 de toutes les \u00e9missions de CO2 provenant de l\u2019activit\u00e9 humaine actuelle.<\/span>[\/vc_column_text][vc_column_text]<span style=\"font-weight: 400;\">Les scientifiques ont pris en compte ces puits de carbone naturels dans leurs mod\u00e9lisations. Toutefois, une v\u00e9ritable m\u00e9thode CDR est un processus intentionnel qui compl\u00e8te l\u2019action de la nature. Nous ne pouvons donc pas consid\u00e9rer les plantes de la Terre enti\u00e8re comme un projet CDR g\u00e9ant sur lequel nous appuyer. Il nous faudrait plut\u00f4t planter et entretenir intentionnellement les for\u00eats \u00e0 l\u2019int\u00e9rieur des terres et dans les zones c\u00f4ti\u00e8res, enrichir les sols et cultiver des plantes pour produire des biocarburants (puis capturer le CO2 d\u00e9gag\u00e9 par leur combustion). <\/span>[\/vc_column_text][vc_column_text]<span style=\"font-weight: 400;\">Si les plantes ont recours \u00e0 la chimie pour capturer le CO2, alors nous pouvons aussi le faire. Par exemple, en exposant certains solvants ou sorbants \u00e0 l\u2019air, ils se lient au CO2, puis l\u2019absorbent, un peu comme une \u00e9ponge. Il est ensuite possible d\u2019extraire le CO2 et de r\u00e9utiliser le produit chimique d\u2019origine. Ce processus s\u2019appelle le captage direct du CO2 dans l\u2019air (DAC). Le CO2 ainsi captur\u00e9 est stock\u00e9 quelque part pour s\u2019assurer de l\u2019enlever compl\u00e8tement de l\u2019atmosph\u00e8re, et donc de ne pas l\u2019\u00e9mettre \u00e0 nouveau. Le DAC fait intervenir des solides et des liquides, mais aussi quelques m\u00e9thodes innovantes moins abouties pour \u00e9liminer le CO2 de l\u2019atmosph\u00e8re.<\/span>[\/vc_column_text][vc_column_text]<span style=\"font-weight: 400;\">L\u2019\u00e9rosion, ou la d\u00e9t\u00e9rioration progressive des pierres et des min\u00e9raux au contact de l\u2019air, de l\u2019eau ou d\u2019organismes vivants, est un autre processus naturel qui affecte d\u00e9j\u00e0 le monde qui nous entoure. Nous pouvons l\u2019utiliser intentionnellement pour lutter contre le changement climatique. Certains m\u00e9canismes chimiques d\u2019\u00e9rosion font intervenir le CO2 contenu dans l\u2019atmosph\u00e8re. Nous pouvons d\u00e9lib\u00e9r\u00e9ment accentuer ce ph\u00e9nom\u00e8ne en acc\u00e9l\u00e9rant les r\u00e9actions, en r\u00e9pandant du basalte finement moulu sur les surfaces par exemple. N\u00e9anmoins, encore une fois, ces m\u00e9canismes ne peuvent \u00eatre consid\u00e9r\u00e9s comme CDR qu\u2019\u00e0 condition d\u2019\u00eatre intentionnels et que le CO2 soit bel et bien captur\u00e9. <\/span>[\/vc_column_text][\/vc_column][\/vc_row][vc_row type=&#8221;in_container&#8221; full_screen_row_position=&#8221;middle&#8221; column_margin=&#8221;default&#8221; column_direction=&#8221;default&#8221; column_direction_tablet=&#8221;default&#8221; column_direction_phone=&#8221;default&#8221; scene_position=&#8221;center&#8221; bottom_padding=&#8221;3%&#8221; left_padding_desktop=&#8221;6%&#8221; right_padding_desktop=&#8221;18%&#8221; left_padding_tablet=&#8221;0&#8243; constrain_group_4=&#8221;yes&#8221; right_padding_tablet=&#8221;0&#8243; left_padding_phone=&#8221;0&#8243; right_padding_phone=&#8221;0&#8243; text_color=&#8221;dark&#8221; text_align=&#8221;left&#8221; row_border_radius=&#8221;none&#8221; row_border_radius_applies=&#8221;bg&#8221; overflow=&#8221;visible&#8221; overlay_strength=&#8221;0.3&#8243; gradient_direction=&#8221;left_to_right&#8221; shape_divider_position=&#8221;bottom&#8221; bg_image_animation=&#8221;none&#8221; gradient_type=&#8221;default&#8221; shape_type=&#8221;&#8221;][vc_column column_padding=&#8221;no-extra-padding&#8221; column_padding_tablet=&#8221;inherit&#8221; column_padding_phone=&#8221;inherit&#8221; column_padding_position=&#8221;all&#8221; column_element_direction_desktop=&#8221;default&#8221; column_element_spacing=&#8221;default&#8221; desktop_text_alignment=&#8221;default&#8221; tablet_text_alignment=&#8221;default&#8221; phone_text_alignment=&#8221;default&#8221; background_color_opacity=&#8221;1&#8243; background_hover_color_opacity=&#8221;1&#8243; column_backdrop_filter=&#8221;none&#8221; column_shadow=&#8221;none&#8221; column_border_radius=&#8221;none&#8221; column_link_target=&#8221;_self&#8221; column_position=&#8221;default&#8221; gradient_direction=&#8221;left_to_right&#8221; overlay_strength=&#8221;0.3&#8243; width=&#8221;1\/1&#8243; tablet_width_inherit=&#8221;default&#8221; animation_type=&#8221;default&#8221; bg_image_animation=&#8221;none&#8221; border_type=&#8221;simple&#8221; column_border_width=&#8221;none&#8221; column_border_style=&#8221;solid&#8221;][vc_column_text]\n<h2><b>La CDR peut-elle r\u00e9soudre notre probl\u00e8me climatique ? <\/b><\/h2>\n[\/vc_column_text][\/vc_column][\/vc_row][vc_row type=&#8221;in_container&#8221; full_screen_row_position=&#8221;middle&#8221; column_margin=&#8221;default&#8221; column_direction=&#8221;default&#8221; column_direction_tablet=&#8221;default&#8221; column_direction_phone=&#8221;default&#8221; scene_position=&#8221;center&#8221; bottom_padding=&#8221;6%&#8221; left_padding_desktop=&#8221;40%&#8221; right_padding_desktop=&#8221;18%&#8221; left_padding_tablet=&#8221;0&#8243; constrain_group_4=&#8221;yes&#8221; right_padding_tablet=&#8221;0&#8243; left_padding_phone=&#8221;0&#8243; right_padding_phone=&#8221;0&#8243; text_color=&#8221;dark&#8221; text_align=&#8221;left&#8221; row_border_radius=&#8221;none&#8221; row_border_radius_applies=&#8221;bg&#8221; overflow=&#8221;visible&#8221; overlay_strength=&#8221;0.3&#8243; gradient_direction=&#8221;left_to_right&#8221; shape_divider_position=&#8221;bottom&#8221; bg_image_animation=&#8221;none&#8221; gradient_type=&#8221;default&#8221; shape_type=&#8221;&#8221;][vc_column column_padding=&#8221;no-extra-padding&#8221; column_padding_tablet=&#8221;inherit&#8221; column_padding_phone=&#8221;inherit&#8221; column_padding_position=&#8221;all&#8221; column_element_direction_desktop=&#8221;default&#8221; column_element_spacing=&#8221;default&#8221; desktop_text_alignment=&#8221;default&#8221; tablet_text_alignment=&#8221;default&#8221; phone_text_alignment=&#8221;default&#8221; background_color_opacity=&#8221;1&#8243; background_hover_color_opacity=&#8221;1&#8243; column_backdrop_filter=&#8221;none&#8221; column_shadow=&#8221;none&#8221; column_border_radius=&#8221;none&#8221; column_link_target=&#8221;_self&#8221; column_position=&#8221;default&#8221; gradient_direction=&#8221;left_to_right&#8221; overlay_strength=&#8221;0.3&#8243; width=&#8221;1\/1&#8243; tablet_width_inherit=&#8221;default&#8221; animation_type=&#8221;default&#8221; bg_image_animation=&#8221;none&#8221; border_type=&#8221;simple&#8221; column_border_width=&#8221;none&#8221; column_border_style=&#8221;solid&#8221;][vc_column_text]<span style=\"font-weight: 400;\">M\u00eame si le fondement chimique des diff\u00e9rents types de CDR para\u00eet solide sur le papier, ils n\u2019ont pas \u00e9t\u00e9 simples \u00e0 mettre en pratique pour l\u2019instant. Les processus de captage direct du CO2 dans l\u2019air et l\u2019\u00e9rosion acc\u00e9l\u00e9r\u00e9e peuvent se r\u00e9v\u00e9ler \u00e9nergivores et peu efficaces. Actuellement, il est <\/span><a href=\"https:\/\/www.iea.org\/data-and-statistics\/charts\/current-cost-of-co2-capture-for-carbon-removal-technologies-by-sector\"><span style=\"font-weight: 400;\">tellement cher<\/span><\/a><span style=\"font-weight: 400;\"> de capturer le CO2 avec ces m\u00e9thodes, que poursuivre ces projets n\u2019a gu\u00e8re de sens sur le plan \u00e9conomique. Cela s\u2019explique notamment par le fait qu\u2019\u00e0 la diff\u00e9rence des \u00e9nergies renouvelables, ces technologies n\u2019en sont encore qu\u2019\u00e0 leurs d\u00e9buts.<\/span>[\/vc_column_text][vc_column_text]<span style=\"font-weight: 400;\">Quand il s\u2019agit de CDR biologique, les plantes perfectionnent la photosynth\u00e8se depuis des millions d\u2019ann\u00e9es. Cette \u00ab technologie \u00bb naturelle est donc plut\u00f4t mature. Toutefois, la CDR biologique qui utilise les for\u00eats plant\u00e9es par des \u00eatres humains peut s\u2019accompagner d\u2019importantes cons\u00e9quences pour la s\u00e9curit\u00e9 alimentaire, la biodiversit\u00e9 et les droits fonciers. En outre, bien qu\u2019elle soit moins co\u00fbteuse que la CDR chimique, l\u2019envergure actuelle de notre influence sur le climat la rend impossible \u00e0 compenser uniquement par la CDR biologique. Encore une fois, les contraintes physiques jouent ici : pour notre niveau actuel d\u2019\u00e9missions de gaz \u00e0 effet de serre, il n\u2019y a simplement pas assez de terres \u00e9merg\u00e9es sur la plan\u00e8te. Et, bien s\u00fbr, l\u2019\u00e9limination du carbone par les plantes ne serait ni permanente ni sur le long terme, si les arbres et plantes employ\u00e9s ne sont pas efficacement prot\u00e9g\u00e9s des incendies et de l\u2019exploitation foresti\u00e8re. <\/span>[\/vc_column_text][vc_column_text]<span style=\"font-weight: 400;\">Pour utiliser la CDR afin de couvrir notre \u00ab d\u00e9passement de budget carbone \u00bb collectif, nous devons d\u2019abord prouver qu\u2019une quantit\u00e9 suffisante de CO2 sera r\u00e9ellement \u00e9limin\u00e9e de fa\u00e7on permanente de l\u2019atmosph\u00e8re. \u00c9tablir cette preuve n\u00e9cessiterait des m\u00e9thodes fiables pour mesurer le CO2, faire remonter l\u2019information, puis v\u00e9rifier les r\u00e9sultats. Or, aucune de ces m\u00e9thodes n\u2019existe \u00e0 ce jour.<\/span>[\/vc_column_text][vc_column_text]<span style=\"font-weight: 400;\">Finalement, compter sur la CDR pour r\u00e9soudre notre probl\u00e8me climatique, c\u2019est faire un pari risqu\u00e9 sur un r\u00e9sultat futur qui reste encore vague. Pour faire simple, ces solutions technologiques ne seront pas pr\u00eates \u00e0 temps pour nous \u00e9viter de d\u00e9passer la limite d\u2019augmentation de temp\u00e9rature fix\u00e9e. Si nous optons aujourd\u2019hui pour des politiques qui se fondent sur ces technologies, et qu\u2019elles ne fonctionnent pas comme nous le souhaiterions, nous aurons manqu\u00e9 l\u2019opportunit\u00e9 que nous poss\u00e9dons actuellement d\u2019emp\u00eacher les \u00e9missions d\u2019atteindre l\u2019atmosph\u00e8re en premier lieu. Or, nous ne pourrons alors plus revenir en arri\u00e8re pour faire un autre choix. <\/span>[\/vc_column_text][\/vc_column][\/vc_row][vc_row type=&#8221;in_container&#8221; full_screen_row_position=&#8221;middle&#8221; column_margin=&#8221;default&#8221; column_direction=&#8221;default&#8221; column_direction_tablet=&#8221;default&#8221; column_direction_phone=&#8221;default&#8221; scene_position=&#8221;center&#8221; bottom_padding=&#8221;3%&#8221; left_padding_desktop=&#8221;6%&#8221; right_padding_desktop=&#8221;18%&#8221; left_padding_tablet=&#8221;0&#8243; constrain_group_4=&#8221;yes&#8221; right_padding_tablet=&#8221;0&#8243; left_padding_phone=&#8221;0&#8243; right_padding_phone=&#8221;0&#8243; text_color=&#8221;dark&#8221; text_align=&#8221;left&#8221; row_border_radius=&#8221;none&#8221; row_border_radius_applies=&#8221;bg&#8221; overflow=&#8221;visible&#8221; overlay_strength=&#8221;0.3&#8243; gradient_direction=&#8221;left_to_right&#8221; shape_divider_position=&#8221;bottom&#8221; bg_image_animation=&#8221;none&#8221; gradient_type=&#8221;default&#8221; shape_type=&#8221;&#8221;][vc_column column_padding=&#8221;no-extra-padding&#8221; column_padding_tablet=&#8221;inherit&#8221; column_padding_phone=&#8221;inherit&#8221; column_padding_position=&#8221;all&#8221; column_element_direction_desktop=&#8221;default&#8221; column_element_spacing=&#8221;default&#8221; desktop_text_alignment=&#8221;default&#8221; tablet_text_alignment=&#8221;default&#8221; phone_text_alignment=&#8221;default&#8221; background_color_opacity=&#8221;1&#8243; background_hover_color_opacity=&#8221;1&#8243; column_backdrop_filter=&#8221;none&#8221; column_shadow=&#8221;none&#8221; column_border_radius=&#8221;none&#8221; column_link_target=&#8221;_self&#8221; column_position=&#8221;default&#8221; gradient_direction=&#8221;left_to_right&#8221; overlay_strength=&#8221;0.3&#8243; width=&#8221;1\/1&#8243; tablet_width_inherit=&#8221;default&#8221; animation_type=&#8221;default&#8221; bg_image_animation=&#8221;none&#8221; border_type=&#8221;simple&#8221; column_border_width=&#8221;none&#8221; column_border_style=&#8221;solid&#8221;][vc_column_text]\n<h2><b>Mais alors, \u00e0 quoi la CDR peut-elle servir ? <\/b><\/h2>\n[\/vc_column_text][\/vc_column][\/vc_row][vc_row type=&#8221;in_container&#8221; full_screen_row_position=&#8221;middle&#8221; column_margin=&#8221;default&#8221; column_direction=&#8221;default&#8221; column_direction_tablet=&#8221;default&#8221; column_direction_phone=&#8221;default&#8221; scene_position=&#8221;center&#8221; bottom_padding=&#8221;6%&#8221; left_padding_desktop=&#8221;40%&#8221; right_padding_desktop=&#8221;18%&#8221; left_padding_tablet=&#8221;0&#8243; constrain_group_4=&#8221;yes&#8221; right_padding_tablet=&#8221;0&#8243; left_padding_phone=&#8221;0&#8243; right_padding_phone=&#8221;0&#8243; text_color=&#8221;dark&#8221; text_align=&#8221;left&#8221; row_border_radius=&#8221;none&#8221; row_border_radius_applies=&#8221;bg&#8221; overflow=&#8221;visible&#8221; overlay_strength=&#8221;0.3&#8243; gradient_direction=&#8221;left_to_right&#8221; shape_divider_position=&#8221;bottom&#8221; bg_image_animation=&#8221;none&#8221; gradient_type=&#8221;default&#8221; shape_type=&#8221;&#8221;][vc_column column_padding=&#8221;no-extra-padding&#8221; column_padding_tablet=&#8221;inherit&#8221; column_padding_phone=&#8221;inherit&#8221; column_padding_position=&#8221;all&#8221; column_element_direction_desktop=&#8221;default&#8221; column_element_spacing=&#8221;default&#8221; desktop_text_alignment=&#8221;default&#8221; tablet_text_alignment=&#8221;default&#8221; phone_text_alignment=&#8221;default&#8221; background_color_opacity=&#8221;1&#8243; background_hover_color_opacity=&#8221;1&#8243; column_backdrop_filter=&#8221;none&#8221; column_shadow=&#8221;none&#8221; column_border_radius=&#8221;none&#8221; column_link_target=&#8221;_self&#8221; column_position=&#8221;default&#8221; gradient_direction=&#8221;left_to_right&#8221; overlay_strength=&#8221;0.3&#8243; width=&#8221;1\/1&#8243; tablet_width_inherit=&#8221;default&#8221; animation_type=&#8221;default&#8221; bg_image_animation=&#8221;none&#8221; border_type=&#8221;simple&#8221; column_border_width=&#8221;none&#8221; column_border_style=&#8221;solid&#8221;][vc_column_text]<span style=\"font-weight: 400;\">Selon le GIEC, la CDR peut nous permettre de compenser les \u00e9missions r\u00e9siduelles des secteurs intensifs en carbone, comme l\u2019aviation ou les processus de l\u2019industrie lourde. Dans ces secteurs, le co\u00fbt d\u2019une d\u00e9carbonation totale peut s\u2019av\u00e9rer prohibitif. Elle pourrait \u00e9galement prendre trop de temps, car les technologies n\u00e9cessaires ne sont pas encore disponibles \u00e0 grande \u00e9chelle. Pour \u00e9viter les cons\u00e9quences climatiques des \u00e9missions dans ces secteurs, la CDR peut \u00eatre une solution de compensation : elle \u00e9liminera du CO2 de l\u2019atmosph\u00e8re.<\/span>[\/vc_column_text][vc_column_text]<span style=\"font-weight: 400;\">L\u2019\u00e9limination du dioxyde de carbone au cours des prochaines d\u00e9cennies sera certainement limit\u00e9e, bien loin des niveaux n\u00e9cessaires pour contrebalancer la quantit\u00e9 d\u2019\u00e9missions annuelles qu\u2019il faudrait pour ne pas d\u00e9passer les limites de r\u00e9chauffement. C\u2019est pourquoi le GIEC indique que la capacit\u00e9 limit\u00e9e de la CDR ne peut servir qu\u2019\u00e0 couvrir les secteurs d\u2019activit\u00e9 intensifs en carbone. Elle ne constitue en aucun cas une solution miracle \u00e0 toutes nos \u00e9missions. Le dernier rapport du GIEC a m\u00eame restreint le r\u00f4le de la CDR dans ses suggestions d\u2019orientation \u00e9conomique, par rapport \u00e0 ses sc\u00e9narios ant\u00e9rieurs, pour parvenir aux objectifs de l\u2019Accord de Paris. Le message est clair : notre action doit se focaliser sur la r\u00e9duction de nos \u00e9missions.<\/span>[\/vc_column_text][\/vc_column][\/vc_row][vc_row type=&#8221;in_container&#8221; full_screen_row_position=&#8221;middle&#8221; column_margin=&#8221;default&#8221; column_direction=&#8221;default&#8221; column_direction_tablet=&#8221;default&#8221; column_direction_phone=&#8221;default&#8221; scene_position=&#8221;center&#8221; bottom_padding=&#8221;3%&#8221; left_padding_desktop=&#8221;18%&#8221; constrain_group_2=&#8221;yes&#8221; right_padding_desktop=&#8221;18%&#8221; left_padding_tablet=&#8221;0&#8243; constrain_group_4=&#8221;yes&#8221; right_padding_tablet=&#8221;0&#8243; left_padding_phone=&#8221;0&#8243; right_padding_phone=&#8221;0&#8243; text_color=&#8221;dark&#8221; text_align=&#8221;left&#8221; row_border_radius=&#8221;none&#8221; row_border_radius_applies=&#8221;bg&#8221; overflow=&#8221;visible&#8221; overlay_strength=&#8221;0.3&#8243; gradient_direction=&#8221;left_to_right&#8221; shape_divider_position=&#8221;bottom&#8221; bg_image_animation=&#8221;none&#8221; gradient_type=&#8221;default&#8221; shape_type=&#8221;&#8221;][vc_column column_padding=&#8221;no-extra-padding&#8221; column_padding_tablet=&#8221;inherit&#8221; column_padding_phone=&#8221;inherit&#8221; column_padding_position=&#8221;all&#8221; column_element_direction_desktop=&#8221;default&#8221; column_element_spacing=&#8221;default&#8221; desktop_text_alignment=&#8221;default&#8221; tablet_text_alignment=&#8221;default&#8221; phone_text_alignment=&#8221;default&#8221; background_color_opacity=&#8221;1&#8243; background_hover_color_opacity=&#8221;1&#8243; column_backdrop_filter=&#8221;none&#8221; column_shadow=&#8221;none&#8221; column_border_radius=&#8221;none&#8221; column_link_target=&#8221;_self&#8221; column_position=&#8221;default&#8221; gradient_direction=&#8221;left_to_right&#8221; overlay_strength=&#8221;0.3&#8243; width=&#8221;1\/1&#8243; tablet_width_inherit=&#8221;default&#8221; animation_type=&#8221;default&#8221; bg_image_animation=&#8221;none&#8221; border_type=&#8221;simple&#8221; column_border_width=&#8221;none&#8221; column_border_style=&#8221;solid&#8221;][vc_column_text]\n<h2 style=\"text-align: center;\">Ressources utiles<\/h2>\n[\/vc_column_text][\/vc_column][\/vc_row][vc_row type=&#8221;in_container&#8221; full_screen_row_position=&#8221;middle&#8221; column_margin=&#8221;default&#8221; column_direction=&#8221;default&#8221; column_direction_tablet=&#8221;default&#8221; column_direction_phone=&#8221;default&#8221; scene_position=&#8221;center&#8221; bottom_padding=&#8221;6%&#8221; left_padding_desktop=&#8221;18%&#8221; constrain_group_2=&#8221;yes&#8221; right_padding_desktop=&#8221;18%&#8221; left_padding_tablet=&#8221;0&#8243; constrain_group_4=&#8221;yes&#8221; right_padding_tablet=&#8221;0&#8243; left_padding_phone=&#8221;0&#8243; right_padding_phone=&#8221;0&#8243; text_color=&#8221;dark&#8221; text_align=&#8221;left&#8221; row_border_radius=&#8221;none&#8221; row_border_radius_applies=&#8221;bg&#8221; overflow=&#8221;visible&#8221; overlay_strength=&#8221;0.3&#8243; gradient_direction=&#8221;left_to_right&#8221; shape_divider_position=&#8221;bottom&#8221; bg_image_animation=&#8221;none&#8221; gradient_type=&#8221;default&#8221; shape_type=&#8221;&#8221;][vc_column column_padding=&#8221;no-extra-padding&#8221; column_padding_tablet=&#8221;inherit&#8221; column_padding_phone=&#8221;inherit&#8221; column_padding_position=&#8221;all&#8221; column_element_direction_desktop=&#8221;default&#8221; column_element_spacing=&#8221;default&#8221; desktop_text_alignment=&#8221;default&#8221; tablet_text_alignment=&#8221;default&#8221; phone_text_alignment=&#8221;default&#8221; background_color_opacity=&#8221;1&#8243; background_hover_color_opacity=&#8221;1&#8243; column_backdrop_filter=&#8221;none&#8221; column_shadow=&#8221;none&#8221; column_border_radius=&#8221;none&#8221; column_link_target=&#8221;_self&#8221; column_position=&#8221;default&#8221; gradient_direction=&#8221;left_to_right&#8221; overlay_strength=&#8221;0.3&#8243; width=&#8221;1\/1&#8243; tablet_width_inherit=&#8221;default&#8221; animation_type=&#8221;default&#8221; bg_image_animation=&#8221;none&#8221; border_type=&#8221;simple&#8221; column_border_width=&#8221;none&#8221; column_border_style=&#8221;solid&#8221;][vc_column_text el_class=&#8221;bullets&#8211;asterisk&#8221;]\n<ul>\n<li>At an <strong><a href=\"https:\/\/www.youtube.com\/live\/lmOEFC4o_Ic?feature=share\">event<\/a> <\/strong>during COP27 in Egypt, IPCC authors speak about CDR and how it is featured in the Working Group 3 report<\/li>\n<li>The first of its kind <strong><a href=\"https:\/\/www.stateofcdr.org\/\">State of Carbon Dioxide Removal Report<\/a><\/strong>, released in early 2023, looks at the state of CDR globally<\/li>\n<li>A <strong><a 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