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Review

Arsenic Removal by Adsorbents from Water for Small Communities’ Decentralized Systems: Performance, Characterization, and Effective Parameters

1
Faculty of Engineering and Applied Science, Memorial University, St. John’s, NL A1B 3X5, Canada
2
Faculty of Business Administration, Memorial University, St. John’s, NL A1B 3X5, Canada
3
Department of Process Engineering, Memorial University, St. John’s, NL A1B 3X5, Canada
4
Chemistry Department, College of Education, University of Al-Qadisiyah, Al Diwaniyah 58001, Iraq
5
College of Engineering and Physical Sciences, School of Engineering, University of Guelph, Guelph, ON N1G 2W1, Canada
6
Department of Civil Engineering, Indian Institute of Technology Hyderabad, Kandi 502285, India
*
Author to whom correspondence should be addressed.
Clean Technol. 2023, 5(1), 352-402; https://doi.org/10.3390/cleantechnol5010019
Submission received: 16 December 2022 / Revised: 30 January 2023 / Accepted: 21 February 2023 / Published: 6 March 2023
(This article belongs to the Special Issue Decentralised Water Treatment Technologies)

Abstract

Arsenic (As), a poisonous and carcinogenic heavy metal, affects human health and the environment. Numerous technologies can remove As from drinking water. Adsorption is the most appealing option for decentralized water treatment systems (DWTS) for small communities and household applications because it is reliable, affordable, and environmentally acceptable. Sustainable low-cost adsorbents make adsorption more appealing for DWTS to address some of the small communities’ water-related issues. This review contains in-depth information on the classification and toxicity of As species and different treatment options, including ion exchange, membrane technologies, coagulation-flocculation, oxidation, and adsorption, and their effectiveness under various process parameters. Specifically, different kinetic and isotherm models were compared for As adsorption. The characterization techniques that determine various adsorbents’ chemical and physical characteristics were investigated. This review discusses the parameters that impact adsorption, such as solution pH, temperature, initial As concentration, adsorbent dosage, and contact time. Finally, low-cost adsorbents application for the removal of As was discussed. Adsorption was found to be a suitable, cost-effective, and reliable technology for DWTS for small and isolated communities. New locally developed and low-cost adsorbents are promising and could support sustainable adsorption applications.
Keywords: heavy metal removal; water treatment; low-cost adsorbents; arsenic adsorption; ion-exchange; membrane technologies; coagulation-flocculation; oxidation heavy metal removal; water treatment; low-cost adsorbents; arsenic adsorption; ion-exchange; membrane technologies; coagulation-flocculation; oxidation

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MDPI and ACS Style

Neisan, R.S.; Saady, N.M.C.; Bazan, C.; Zendehboudi, S.; Al-nayili, A.; Abbassi, B.; Chatterjee, P. Arsenic Removal by Adsorbents from Water for Small Communities’ Decentralized Systems: Performance, Characterization, and Effective Parameters. Clean Technol. 2023, 5, 352-402. https://doi.org/10.3390/cleantechnol5010019

AMA Style

Neisan RS, Saady NMC, Bazan C, Zendehboudi S, Al-nayili A, Abbassi B, Chatterjee P. Arsenic Removal by Adsorbents from Water for Small Communities’ Decentralized Systems: Performance, Characterization, and Effective Parameters. Clean Technologies. 2023; 5(1):352-402. https://doi.org/10.3390/cleantechnol5010019

Chicago/Turabian Style

Neisan, Roya Sadat, Noori M. Cata Saady, Carlos Bazan, Sohrab Zendehboudi, Abbas Al-nayili, Bassim Abbassi, and Pritha Chatterjee. 2023. "Arsenic Removal by Adsorbents from Water for Small Communities’ Decentralized Systems: Performance, Characterization, and Effective Parameters" Clean Technologies 5, no. 1: 352-402. https://doi.org/10.3390/cleantechnol5010019

APA Style

Neisan, R. S., Saady, N. M. C., Bazan, C., Zendehboudi, S., Al-nayili, A., Abbassi, B., & Chatterjee, P. (2023). Arsenic Removal by Adsorbents from Water for Small Communities’ Decentralized Systems: Performance, Characterization, and Effective Parameters. Clean Technologies, 5(1), 352-402. https://doi.org/10.3390/cleantechnol5010019

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