Attapulgite supported nanoscale zero-valent iron in wastewater treatment and groundwater remediation: synthesis, application, performance and limitation

被引：2
作者：
Anang E. [1 ,2 ]
Hong L. [1 ,2 ]
Fan X. [1 ,2 ]
Asamoah E.N. [1 ,2 ]
机构：
[1] College of Resource and Environmental Engineering, Wuhan University of Science and Technology, Wuhan
[2] Hubei Key Laboratory for Efficient Utilization and Agglomeration of Metallurgic Mineral Resources, Wuhan University of Science and Technology, Wuhan
来源：
Environmental Technology Reviews | 2022年 / 11卷 / 01期
基金：
中国国家自然科学基金;
关键词：
Attapulgite; contaminants; groundwater; nanoscale zero-valent iron; wastewater;
D O I：
10.1080/21622515.2021.2010131
中图分类号：
学科分类号：
摘要：
Polluted water continues to be a major problem globally since it deteriorates human health after consumption and impedes sustainable development. Nanoscale zero-valent iron (nZVI) has been used to tackle the problem, but certain significant disadvantages of the nZVI limit its efficiency. Owing to the demerits of nZVI, various materials have been employed to support the nZVI to ensure efficient decontamination. There is rising interest in using attapulgite as a support for nZVI. The use of attapulgite supported nanoscale zero-valent iron (A-nZVI) to decontaminate wastewater/groundwater has proven to be highly efficient as compared to unsupported nZVI. This paper presents an overview of the syntheses, performance, application and limitations of using A-nZVI to treat wastewater/remediate groundwater. A-nZVI has been extensively employed on laboratory scale, thus making it difficult to simulate its removal efficiency on a large scale. However, its high removal efficiency under the appropriate operational conditions make it ideal to be used on an industrial level. This review is important because it identifies gaps in literature with respect to A-nZVI that need to be filled to improve ZVI-based technology. © 2021 Informa UK Limited, trading as Taylor & Francis Group.
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页码：1 / 17
页数：16
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