气候变化领域集成服务门户(CCPortal): Capture and flocculation of toxic cyanobacteria by amphiphilic peptide dendrimers for mitigating harmful blooms

CCPortal

DOI	10.1016/j.cej.2024.151382
	Capture and flocculation of toxic cyanobacteria by amphiphilic peptide dendrimers for mitigating harmful blooms
	Zheng, Heng; Tremblay, Pier-Luc; Chen, Wang; Wang, Qi; Hu, Danni; Huang, Yuanzheng; Liu, Xiaoxuan; Zhang, Cheng-Cai; Peng, Ling; Zhang, Tian
发表日期	2024
ISSN	1385-8947
EISSN	1873-3212
起始页码	489
卷号	489
英文摘要	Harmful and toxic cyanobacterial blooms in freshwater constitute critical environmental problems and are becoming more frequent as a consequence of global climate change. One mitigation strategy is flocculation, which could be achieved with treatment by highly efficient, non-toxic, and biodegradable agents. Here, we report two amphiphilic peptide dendrimers (AmPDs), KK 2 and KK 2 K 4 , for the removal of the toxic and bloom-forming cyanobacterium Microcystis aeruginosa from freshwater. KK 2 and KK 2 K 4 are composed of a hydrophobic alkyl chain and a positively charged polylysine dendron of the first and second generation, respectively. Owing to electrostatic interactions with the negatively charged cell surface of M. aeruginosa , KK 2 and KK 2 K 4 could quickly capture the cyanobacterial cell population via flocculation at very low concentrations. When combined with the natural clay sepiolite, the two AmPDs were even more efficient in promoting cell flocculation. The most performant system, with 3.0 mg/L KK 2 K 4 and sepiolite clay, could remove 97.1 % of M. aeruginosa within 15 min by forming stable flocs. Remarkably, such a system was able to trap toxin molecules released by cyanobacterial cells, thus limiting its destructive impact on ecosystems. This study demonstrates how self-assembling dendrimer materials can resolve cyanobacterial blooms, providing an innovative solution to this environmental challenge.
英文关键词	Cyanobacterial bloom; Toxin; Amphiphilic dendrimer; Flocculation; Sepiolite clay; Negatively charged microbial surface
语种	英语
WOS研究方向	Engineering
WOS类目	Engineering, Environmental ; Engineering, Chemical
WOS记录号	WOS:001232371600001
来源期刊	CHEMICAL ENGINEERING JOURNAL
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/297470
作者单位	Wuhan University of Technology; Wuhan University of Technology; Wuhan University of Technology; Wuhan University of Technology; China Pharmaceutical University; China Pharmaceutical University; Chinese Academy of Sciences; Institute of Hydrobiology, CAS; Aix-Marseille Universite; Centre National de la Recherche Scientifique (CNRS); CNRS - Institute of Physics (INP)
推荐引用方式 GB/T 7714	Zheng, Heng,Tremblay, Pier-Luc,Chen, Wang,et al. Capture and flocculation of toxic cyanobacteria by amphiphilic peptide dendrimers for mitigating harmful blooms[J],2024,489.
APA	Zheng, Heng.,Tremblay, Pier-Luc.,Chen, Wang.,Wang, Qi.,Hu, Danni.,...&Zhang, Tian.(2024).Capture and flocculation of toxic cyanobacteria by amphiphilic peptide dendrimers for mitigating harmful blooms.CHEMICAL ENGINEERING JOURNAL,489.
MLA	Zheng, Heng,et al."Capture and flocculation of toxic cyanobacteria by amphiphilic peptide dendrimers for mitigating harmful blooms".CHEMICAL ENGINEERING JOURNAL 489(2024).