气候变化领域集成服务门户(CCPortal): Phosphate Elimination and Recovery Lightweight (PEARL) membrane: A sustainable environmental remediation approach

CCPortal

DOI	10.1073/PNAS.2102583118
	Phosphate Elimination and Recovery Lightweight (PEARL) membrane: A sustainable environmental remediation approach
	Ribet S.M.; Shindel B.; dos Reis R.; Nandwana V.; Dravid V.P.
发表日期	2021
ISSN	0027-8424
卷号	118 期号:23
英文摘要	Aqueous phosphate pollution can dramatically impact ecosystems, introducing a variety of environmental, economic, and public health problems. While novel remediation tactics based on nanoparticle binding have shown considerable promise in nutrient recovery from water, they are challenging to deploy at scale. To bridge the gap between the laboratory-scale nature of these nanostructure solutions and the practical benchmarks for deploying an environmental remediation tool, we have developed a nanocomposite material. Here, an economical, readily available, porous substrate is dip coated using scalable, waterbased processes with a slurry of nanostructures. These nanomaterials have tailored affinity for specific adsorption of pollutants. Our Phosphate Elimination and Recovery Lightweight (PEARL) membrane can selectively sequester up to 99% of phosphate ions from polluted waters at environmentally relevant concentrations. Moreover, mild tuning of pH promotes at will adsorption and desorption of nutrients. This timed release allows for phosphate recovery and reuse of the PEARL membrane repeatedly for numerous cycles. We combine correlative microscopy and spectroscopy techniques to characterize the complex microstructure of the PEARL membrane and to unravel the mechanism of phosphate sorption. More broadly, through the example of phosphate pollution, this work describes a platform membrane approach based on nanostructures with specific affinity coated on a porous structure. Such a strategy can be tuned to address other environmental remediation challenges through the incorporation of other nanomaterials. © 2021 National Academy of Sciences. All rights reserved.
英文关键词	Adsorption; Electron microscopy; Eutrophication; Nanotechnology; Nutrient pollution
语种	英语
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/238590
作者单位	Department of Materials Science and Engineering, Northwestern University, Evanston, IL 60208, United States; The Northwestern University Atomic, Nanoscale Characterization Experimental Center, Northwestern University, Evanston, IL 60208, United States; International Institute of Nanotechnology, Northwestern University, Evanston, IL 60208, United States
推荐引用方式 GB/T 7714	Ribet S.M.,Shindel B.,dos Reis R.,et al. Phosphate Elimination and Recovery Lightweight (PEARL) membrane: A sustainable environmental remediation approach[J],2021,118(23).
APA	Ribet S.M.,Shindel B.,dos Reis R.,Nandwana V.,&Dravid V.P..(2021).Phosphate Elimination and Recovery Lightweight (PEARL) membrane: A sustainable environmental remediation approach.Proceedings of the National Academy of Sciences of the United States of America,118(23).
MLA	Ribet S.M.,et al."Phosphate Elimination and Recovery Lightweight (PEARL) membrane: A sustainable environmental remediation approach".Proceedings of the National Academy of Sciences of the United States of America 118.23(2021).