Unveiling the potential for artificial upwelling in algae derived carbon sink and nutrient mitigation

Shen, Chunlei; Hao, Xinya; An, Dong; Tillotson, Martin R.; Yang, Lin; Zhao, Xu

doi:10.1016/j.scitotenv.2023.167150

Science of The Total Environment

2023

DOI: 10.1016/j.scitotenv.2023.167150

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Unveiling the potential for artificial upwelling in algae derived carbon sink and nutrient mitigation

Chunlei Shen,

Xinya Hao,

Dong An

et al.

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2024

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Cited by 2 publications

References 77 publications

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Decomposition of driving factors of carbon emissions and carbon sinks from marine fishery production in China

Song,

Liu,

Huang

et al. 2024

Ocean & Coastal Management

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Decomposition of driving factors of carbon emissions and carbon sinks from marine fishery production in China

Song,

Liu,

Huang

et al. 2024

Ocean & Coastal Management

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Bio-Inspired Eco-Composite Materials Seaweed Waste Integration for Sustainable Structural Applications

Barros,

Nobre,

Bessa

et al. 2024

Sustainability

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The increasing levels of atmospheric carbon dioxide (CO2) and plastic waste in marine environments demand immediate action to mitigate their effects. A promising solution lies in enhancing algal cultivation in marine environments, which not only absorbs CO2 and produces oxygen (O2) but also contributes to carbon sequestration. This study aims to develop biodegradable substrates for algae cultivation, facilitating their gradual degradation in marine environments and eventual deposition on the ocean floor, thereby addressing both plastic pollution and CO2 emissions. We selected various degradable polymers and incorporated differing proportions of algae residue powder (10%, 20%, and 30% by weight) into these substrates. The compositions were processed through extrusion and molded into test samples for hot compression molding. Characterization included assessments of mass loss, morphology, chemical composition, and mechanical strength under both dry conditions and after immersion in seawater for up to two months. The results indicate that the incorporation of algae residue significantly accelerates the degradation of the samples, particularly under extended exposure to seawater. Mass loss measurements indicated that samples with a 30 wt% algae addition experienced mass losses of up to 12% after two months of immersion. Mechanical strength tests demonstrated a reduction of up to 57% in strength due to the incorporation of algae, with seawater immersion further exacerbating this loss. These findings highlight the potential of biopolymer substrates infused with algae residue for effective carbon sequestration through enhanced algae cultivation.

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Unveiling the potential for artificial upwelling in algae derived carbon sink and nutrient mitigation

Cited by 2 publications

References 77 publications

Decomposition of driving factors of carbon emissions and carbon sinks from marine fishery production in China

Decomposition of driving factors of carbon emissions and carbon sinks from marine fishery production in China

Bio-Inspired Eco-Composite Materials Seaweed Waste Integration for Sustainable Structural Applications

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