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Impact of constant magnetic field on enhancing the microalgal biomass and biomolecules accumulations and life cycle assessment of the approach

文献类型： 外文期刊

作者： Xu, Shannan 1 ; Jiang, Yuye 3 ; Liu, Yong 1 ; Esakkimuthu, Sivakumar 3 ; Chen, Hao 3 ; Wang, Shuang 3 ;

作者机构： 1.Chinese Acad Fishery Sci, South China Sea Fisheries Res Inst, Key Lab Marine Ranching, Minist Agr & Rural Affairs, Guangzhou 510300, Peoples R China

2.Sci Observat & Res Stn Pearl River Estuary Ecosyst, Guangzhou 510300, Peoples R China

3.Jiangsu Univ, Sch Energy & Power Engn, Jiangsu 212013, Peoples R China

关键词： Microalgae; Static magnetic field; Biomolecules; Economic feasibility analysis; Life cycle assessment

期刊名称：ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS （ 影响因子：4.6； 五年影响因子：4.8 ）

ISSN： 2211-9264

年卷期： 2024 年 80 卷

页码：

收录情况： SCI

摘要： Three freshwater microalgal species such as Chlorella protothecoides, Micractinium sp. and Scenedesmus obliquus were cultured under static magnetic field (SMF) and its influence on the accumulation of biomolecules (lipids, proteins, carbohydrates) and biomass production have been evaluated. This study involved the cultivation of the three microalgal species under the electromagnetic intensity of 80mT which was achieved using ferrite magnets. The SMF treatment showed a significant enhancement in biomass productivity of S. obliquus (0.098 g L-1 d-1) and C. protothecoides (0.114 g L-1 d-1). On compared to SMF untreated culture, Micractinium sp. resulted in a considerable reduction in biomass productivity by 10.9 % was observed. The constant SMF treatment for the total cultivation period (17 days) has significantly promoted the biomolecules accumulation (9 % lipids, 39 % protein, 16 % carbohydrates) and biomass (55 %) productivity of S. obliquus. The results suggested that SMF treatment exhibited a species -specific response in biomass productivity and biomolecules accumulation. Finally, to assess the feasibility of this strategy, economic feasibility and LCA simulation for SMF treated microalgal biomass and biomolecules production have been evaluated. LCA revealed that the magnetic field application for microalgal cultivation processes showed diversified impacts on environment as few indicators (Abiotic depletion, Acidification and Global warming) were better under magnetic application as compared to non-magnetic cultivation process.

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