Improved microalgae carbon fixation and microplastic sedimentation in the lake through in silico method.

Autor: Du M; College of Environmental Science and Engineering, North China Electric Power University, Beijing 102206, China., Pu Q; College of Environmental Science and Engineering, North China Electric Power University, Beijing 102206, China., Xu Y; College of Environmental Science and Engineering, North China Electric Power University, Beijing 102206, China. Electronic address: xuyingjie@ncepu.edu.cn., Li Y; College of Environmental Science and Engineering, North China Electric Power University, Beijing 102206, China. Electronic address: liyuxx@ncepu.edu.cn., Li X; State Key Laboratory of Environmental Criteria and Risk Assessment, National Engineering Laboratory for Lake Pollution Control and Ecological Restoration, State Environmental Protection Key Laboratory for Lake Pollution Control, Chinese Research Academy of Environmental Sciences, Beijing 100012, China; Northern Region Persistent Organic Pollution Control (NRPOP) Laboratory, Faculty of Engineering and Applied Science, Memorial University, St. John's A1B 3X5, Canada. Electronic address: xixi.li@mun.ca.
Jazyk: angličtina
Zdroj: The Science of the total environment [Sci Total Environ] 2024 May 10; Vol. 924, pp. 171623. Date of Electronic Publication: 2024 Mar 12.
DOI: 10.1016/j.scitotenv.2024.171623
Abstrakt: The impact of microplastics in lake water environments on microalgae carbon fixation and microplastic sedimentation has attracted global attention. The molecular dynamic simulation method was used to design microplastic additive proportioning schemes for improving microalgae carbon fixation and microplastic sedimentation. Results showed that the harm of microplastics can be effectively alleviated by adjusting the proportioning scheme of plastic additives. Besides, the decabromodiphenyl oxide (DBDPO) was identified as the main additive that affect the microalgae carbon fixation and microplastic sedimentation. Thus, a molecular modification based on CiteSpace visual analysis was firstly used and 12 DBDPO derivatives were designed. After the screening, DBDPO-2 and DBDPO-5 became the environmentally friendly DBDPO alternatives, with the highest microalgae carbon fixation and microplastic sedimentation ability enhancement of over 25 %. Compared to DBDPO, DBDPO derivatives were found easier to stimulate the adsorption and binding ability of surrounding hotspot amino acids to CO 2 and ribulose-5-phosphate, increasing the solvent-accessible surface area of microplastics, thus improving the microalgae carbon fixation and microplastic sedimentation ability. This study provides theoretical support for simultaneously promoting the microalgae carbon fixation and microplastic sedimentation in the lake water environment and provides scientific basis for the protection and sustainable development of lake water ecosystem.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2024 Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
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