Functionalised polymeric materials for the removal of arsenate from contaminated water
File(s)
Published version
Author(s)
Type
Journal Article
Abstract
Inorganic arsenic is a carcinogen and, in some regions, one of the biggest contaminants in drinking water. The World Health Organisation (WHO) has indicated that over 140 million people worldwide are drinking water with levels of arsenic above the recommended guideline value of 10 μg L−1. Therefore, there is a pressing need to find low-cost technologies for the removal of inorganic arsenic from water. As part of our efforts to tackle this problem, we previously developed an efficient sorbent material (ImpAs) based on a polymeric support (HypoGel) functionalised with a selective chemical receptor for arsenate (i.e. arsenic(V)). With the aim to lower the production cost of this material and improve its arsenate removal capacity, we have studied other polymeric materials as solid supports. Herein, we report the synthesis of new inexpensive sorbent materials by covalently attaching our previously reported arsenate receptor onto Merrifield and Purolite C106 polymer beads. We carried out batch and flow-through experiments with the new polymeric materials demonstrating that they have up to 60% higher arsenate removal capacities than the original functionalised HypoGel material. Furthermore, the new polymeric materials operate very well under flow-through conditions, removing over 99% of arsenate present in solutions containing low (15 μg L−1) and high (300 μg L−1) levels of arsenate. We also report on the lower production cost of the new Purolite-based material as compared to the original functionalised HypoGel polymer beads.
Date Issued
2023-03-01
Date Acceptance
2023-01-16
Citation
Environmental Science: Water Research & Technology, 2023, 9 (3), pp.772-780
ISSN
2053-1419
Publisher
Royal Society of Chemistry
Start Page
772
End Page
780
Journal / Book Title
Environmental Science: Water Research & Technology
Volume
9
Issue
3
Copyright Statement
This journal is © The Royal Society of Chemistry 2023. This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.
License URL
Identifier
https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000917909300001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=a2bf6146997ec60c407a63945d4e92bb
Subjects
Engineering
Engineering, Environmental
Environmental Sciences
Environmental Sciences & Ecology
Life Sciences & Biomedicine
Physical Sciences
RECOGNITION
Science & Technology
Technology
Water Resources
Publication Status
Published
Date Publish Online
2023-01-18