Facile green preparation of single- and two-component modified activated carbon fibers for efficient trace heavy metals removal from drinking water

Qi Zuo; Hong Zheng; Pengyi Zhang; Yu Zhang; Jiejing Zhang; Baichao Zhang

doi:10.1016/j.chemosphere.2023.137799

Facile green preparation of single- and two-component modified activated carbon fibers for efficient trace heavy metals removal from drinking water

Chemosphere. 2023 Mar:316:137799. doi: 10.1016/j.chemosphere.2023.137799. Epub 2023 Jan 9.

Authors

Qi Zuo¹, Hong Zheng², Pengyi Zhang³, Yu Zhang¹, Jiejing Zhang⁴, Baichao Zhang⁴

Affiliations

¹ Engineering Research Center of Ministry of Education for Geological Carbon Storage and Low Carbon Utilization of Resources, Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences, Beijing 100083, China; State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China.
² Engineering Research Center of Ministry of Education for Geological Carbon Storage and Low Carbon Utilization of Resources, Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences, Beijing 100083, China. Electronic address: zhengh@cugb.edu.cn.
³ State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China. Electronic address: zpy@tsinghua.edu.cn.
⁴ Engineering Research Center of Ministry of Education for Geological Carbon Storage and Low Carbon Utilization of Resources, Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences, Beijing 100083, China.

PMID: 36634718
DOI: 10.1016/j.chemosphere.2023.137799

Abstract

Trace heavy metals exist in drinking water, having great adverse effects on human health and making it a huge challenge to remove. Herein, novel materials have been prepared by a simple and green method using single- (polydopamine (PDA) or 2,3-dimercaptopropanesulfonic sodium (DMPS)) (PDA-OACF or DMPS-OACF) and two-component (PDA and DMPS) (DMPS-PDA-OACF) functionalized activated carbon fibers pretreated by hydrogen peroxide for the removal of trace heavy metals. The as-prepared DMPS-OACF (7.5,20) under DMPS addition of 7.5 mg and sonication time of 20 min retained large specific surface area, micro-mesoporous structure and rich functional groups and showed better adsorption performance for trace lead and mercury. It also exhibited wide applicable ranges of pH (3.50-10.50) and concentration (50-1136 μg L^-1), rapid adsorption kinetics, and excellently selective removal performance for trace lead. The maximum lead adsorption capacity reached 16.03 mg g^-1 when the effluent lead concentration met World Health Organization (WHO) standard and the adsorbent can be regenerated by EDTA solution. The fitting results of adsorption kinetics and isotherm models revealed that the lead adsorption process was multi-site adsorption on heterogeneous surfaces and chemical adsorption. The excellent adsorption properties for trace heavy metals were attributed that the sulfur/oxygen/nitrogen-containing functional groups boosted diffusion and adsorption by electrostatic attraction and coordination, suggesting that DMPS-OACF (7.5,20) has great application potential in the removal of trace heavy metals.

Keywords: 2,3-Dimercaptopropanesulfonic sodium; Activated carbon fibers; Adsorption; Drinking water; Trace heavy metals.

MeSH terms

Adsorption
Carbon Fiber
Charcoal / chemistry
Drinking Water*
Humans
Hydrogen-Ion Concentration
Kinetics
Lead
Metals, Heavy* / analysis
Trace Elements*
Water Pollutants, Chemical* / analysis

Substances

Lead
Drinking Water
Charcoal
Carbon Fiber
Water Pollutants, Chemical
Metals, Heavy
Trace Elements