In a recently published paper, researchers use “an LCA approach to calculate the Long-Lasting #CarbonSequestration (LLCS) of #seaweed, which can be understood as the difference between #CarbonFixation & released C throughout the life cycle of seaweed.”
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Using kelp (Laminaria japonica) as an example of seaweed, the present study “validates the procedure of calculating the LLCS of seaweed throughout its whole life cycle in Ailian Bay from nursery to processing into #biochar (fertilizer) as the final product.” 2/9
The results showed that “the #CarbonSequestration (full life cycle) of kelp in Ailian Bay was 97.73g C /m2/year.” 3/9
“#Biomass carbon accounts for approximately 86.15% of the total value (982.53 g C/m2/year) of carbon absorption source of #kelp in Ailian Bay, with the remaining 13.85% consisting of RDOC and sedimentary carbon.” 4/9
“The #CarbonFootprint of the kelp in Ailain Bay is -1146.8 tons of CO2 per year, and the negative value indicates that the #kelp in Ailian Bay can contribute 1146.8 tons of #CarbonSink per year.”
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Moreover, scientists in this study calculated the amount of #biomass carbon that was #sequestrated by seaweed production in China from 2010 to 2020.
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“If all seaweed #biomass carbon is permanently #sequestered the results of this study suggest that about 250,000 tons of CO2 could be fixed by Chinese seaweed
during this decade, which could reach 0.2% of China's peak carbon.”
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Accordingly, the present research concludes that “the mass production of #seaweed can be utilized as an efficient method to #sequestrate carbon and a feasible method for evaluating the effect of kelp farms on climate change.”
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🔗 Link to the paper entitled “Carbon sequestration assessment and analysis in the whole life cycle of seaweed” here ⬇️ iopscience.iop.org/article/10.108…
📝💡 𝐖𝐞𝐞𝐤𝐥𝐲 𝐇𝐢𝐠𝐡𝐥𝐢𝐠𝐡𝐭𝐬💡📝
Here's your roundup of top #CarbonDioxideRemoval News / Scientific Papers from the past week:
🌱🪨🎛️🌊
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📜 Scroll down ⬇️
1️⃣ @CharmIndustrial, which removes carbon from the atmosphere via bio-oil sequestration, has raised $100 million in a Series B funding round. It has also signed new record-breaking arrangements for 140,000 tons/CDR with Frontier & JPMorgan.
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2️⃣ Carbon Removal Marketplace @nori announces the appointment of Matt Trudeau as CEO and a $6.25M funding round led by @M13Company, @Toyota_Ventures, @placeholdervc, and @Cargill, bringing total funding to $17.25M.
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🌊 For the first time researchers used “lab and wind-wave tank experiments to prove the concept of using Mg(OH)2 for the #OceanAlkalinityEnhancement and #CarbonDioxideRemoval approach (OAE-CDR).”
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🌊 Experiment results showed “up to 370 μmol kg−1 seawater total alkalinity (TA) increase without precipitation, stable enhanced TA, and OAE-CDR efficiency (ΔDIC/ΔTA) consistent with theoretical calculation.”
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🌊 Based on the experimental results, scientists involved in this study calculated “the global Mg(OH)2 OAE-CDR efficiency and #CO2Sink from this approach.”
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Recent research submitted in the @researchsquare “presents first-of-its-kind process concepts for co-removal of #methane and #CO2 that combine the catalytic conversion of methane step (thermal/photo-catalytic) with #CO2Capture (#DirectAirCapture).”
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“The proposed solution to co-remove methane and CO2 from low concentration sources has the potential of #removing more CO2-equivalents from the atmosphere at lower energy penalty when compared to technologies that focus on removing only CO2 from the air, the study affirmed.” 2/
Based on the analysis of this study, researchers summarize the following challenges and opportunities with the proposed solution for co-removing methane and CO2 from the atmosphere:
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Findings of this study suggest that “restoring mangroves, which are common in tropical shallow marine settings, will lead to notable local #OceanAlkalinityEnhancement across a wide range of scenarios.” 2/
“The process is seagrass & mangroves influence the organic & inorganic cycling of C in sediment, with strong impacts on diffusive #alkalinity fluxes. In carbonate-rich sediment, seagrass & mangroves foster carbonate dissolution, resulting in increased alkalinity production...
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🌋 A recent study by @Olenellus & @GambixPT published in @geosociety found that “an extinct #volcano off the shore of Portugal could store as much as 1.2-8.6 gigatons of CO2, the equivalent of 24-125yrs of the country’s industrial emissions.” #CarbonStorage
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“Doing so would rely on a method known as in situ mineral #carbonization, which works when the CO2 taken from the air is pumped deep underground.”
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“Once in the bowels of this extinct volcano, calcium, magnesium, and iron react to the incoming carbon dioxide to form calcite, dolomite, and magnesite, trapping the CO2 forever in a rocky prison.”
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2️⃣💵 In an effort to neutralize its environmental footprint, JP Morgan has announced it plans to invest more than $200 million to purchase credits from several #CarbonDioxideRemoval companies (“one of the biggest bets ever on #CarbonRemoval”).