Sustainable technologies for removal of arsenic from water and wastewater: A comprehensive review

被引：0
作者：
Ghosh, Soumya [1 ,2 ]
Igwegbe, Chinenye Adaobi [3 ,4 ]
Malloum, Alhadji [5 ,6 ]
Elmakki, Mohammed A.E. [6 ,7 ]
Onyeaka, Helen [8 ]
Fahmy, Arzak H. [9 ]
Aquatar, Md. Osim [10 ]
Ahmadi, Shabnam [11 ]
Alameri, Ban M. [12 ]
Ghosh, Swagata [13 ]
Khan, Nadeem A. [15 ]
Singh, Lakhveer [14 ]
Mubarak, Nabisab Mujawar [16 ,17 ,18 ]
Dehghani, Mohammad Hadi [19 ,20 ]
机构：
[1] Natural and Medical Sciences Research Center, University of Nizwa, Nizwa
[2] University of the Free State, Bloemfontein
[3] Department of Chemical Engineering, Nnamdi Azikiwe University, P. M. B. 5025, Awka
[4] Department of Applied Bioeconomy, Wroclaw University of Environmental and Life Sciences, Wrocław
[5] Department of Physics, Faculty of Science, University of Maroua, PO BOX 46, Maroua
[6] Department of Chemistry, University of the Free State, PO BOX 339, Bloemfontein
[7] Department of Chemistry, Omdurman Islamic University, P.O. Box 382, Omdurman
[8] School of Chemical Engineering, University of Birmingham, Edgbaston, Birmingham
[9] Faculty Of Science, University Of Helwan, Creative Egyptian Biotechnologists, Giza
[10] Environmental Materials Division, CSIR-National Environmental Engineering Research Institute, Jawaharlal Nehru Marg, Nagpur
[11] Department of Environmental Health Engineering, Faculty of Medical Sciences, Tarbiat Modares University, Tehran
[12] Department of Electrical Engineering, Faculty of Engineering, Mustansiriyah University, Baghdad
[13] Applied Science Department, Symbiosis Institute of Technology, Symbiosis International Deemed University, Pune
[14] Department of Chemistry, Sardar Patel University, Himachal Pradesh, Mandi
[15] Civil Engineering Department, College of Engineering, King Khalid University, Abha
[16] Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Brunei, Bandar Seri Begawan
[17] Department of Biosciences, Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences, Chennai
[18] Centre for Research Impact & Outcome, Chitkara University Institute of Engineering and Technology, Chitkara University, Punjab, Rajpura
[19] Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran
[20] Center for Solid Waste Research, Institute for Environmental Research, Tehran University of Medical Sciences, Tehran
来源：
Journal of Molecular Liquids | 2025年 / 427卷
关键词：
Adsorption; Arsenic; Electrochemical technology; Membrane filtration; Remediation and oxidation; Water and wastewater;
D O I：
10.1016/j.molliq.2025.127412
中图分类号：
学科分类号：
摘要：
Arsenic contamination in water poses serious environmental and health risks, requiring effective remediation methods. Adsorption has emerged as a highly promising approach due to its simplicity, adaptability, and cost-effectiveness. This review evaluates adsorption isotherms and kinetic models, notably Langmuir, Freundlich and the pseudo-second-order, which accurately described arsenic adsorption mechanisms. Thermodynamic analysis confirms adsorption feasibility, with negative Gibbs free energy values confirming spontaneity and exothermic enthalpy favoring lower temperatures. Key operational factors, including ionic strength, initial concentration, temperature, contact time, adsorbent dosage, and pH, were explored. The review also discussed a wide range of adsorbents tested at the molecular level, such as Fe2O3, Na2O, CaO, Al2O3, MgO, SiO2, modified γ-Al2O3, and TiO2, highlighting both explicit and implicit solvation models (PCM and COSMO) to simulate environmental effects. However, most studies omit temperature and entropy contributions to adsorption energy, which are critical for realistic modeling. Advanced materials, including nano-iron oxides, functionalized composite nanofibers, chitosan composites, and metal–organic frameworks (MOFs), exhibit high adsorption capacities, such as a qmax of 249 mg/g for As(V) with functionalized composite nanofibers. Alternative technologies including coagulation, membrane filtration, ion exchange, electrochemical methods, and bioremediation were also evaluated for their complementary roles in arsenic remediation, especially where adsorption alone is inadequate. Molecular simulations and electronic structure calculations offer atomic-level insights, informing future adsorbent design. The adsorption–desorption cycles highlight the need for regenerable adsorbents for sustainable, cost-effective water treatment. Developing multifunctional adsorbents and integrated treatment approaches offer practical, adaptable solutions for global arsenic mitigation across diverse environments and economies. © 2025 Elsevier B.V.
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