Volume 22, Issue 7 e202100323
Personal Account

Recent Progress, Challenges, and Opportunities of Membrane Distillation for Heavy Metals Removal

M. O. Aijaz

M. O. Aijaz

Center of Excellence for Research in Engineering Materials (CEREM), Deanship of Scientific Research (DSR), King Saud University, Riyadh, 11421 Saudi Arabia

Advanced Membrane Technology Research Centre (AMTEC), School of Chemical and Energy Engineering (SCEE), Faculty of Engineering, Universiti Teknologi Malaysia, 81310 UTM Skudai, Johor, Malaysia

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M. R. Karim

Corresponding Author

M. R. Karim

Center of Excellence for Research in Engineering Materials (CEREM), Deanship of Scientific Research (DSR), King Saud University, Riyadh, 11421 Saudi Arabia

K.A.CARE Energy Research and Innovation Center, King Saud University, Riyadh, Saudi Arabia

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N. M. A. Omar

N. M. A. Omar

Advanced Membrane Technology Research Centre (AMTEC), School of Chemical and Energy Engineering (SCEE), Faculty of Engineering, Universiti Teknologi Malaysia, 81310 UTM Skudai, Johor, Malaysia

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M. H. D. Othman

Corresponding Author

M. H. D. Othman

Advanced Membrane Technology Research Centre (AMTEC), School of Chemical and Energy Engineering (SCEE), Faculty of Engineering, Universiti Teknologi Malaysia, 81310 UTM Skudai, Johor, Malaysia

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M. A. Wahab

M. A. Wahab

Institute for Advanced Study, Chengdu University, Chengdu, 610106 China

School of Mechanical, Medical and Process Engineering, Faculty of Engineering, Queensland University of Technology, 2 George St Brisbane, GPO Box 2434, Brisbane, Queensland, Australia, 4001

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M. Akhtar Uzzaman

M. Akhtar Uzzaman

Solar Energy Research Institute (SERI), Universiti Kebangsaan Malaysia, UKM, Bangi, 43600, Selangor, Malaysia

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H. M. Alharbi

H. M. Alharbi

Center of Excellence for Research in Engineering Materials (CEREM), Deanship of Scientific Research (DSR), King Saud University, Riyadh, 11421 Saudi Arabia

Mechanical Engineering Department, College of Engineering, King Saud University, Riyadh, 11421 Saudi Arabia

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I. Wazeer

I. Wazeer

Chemical Engineering Department, King Saud University, P.O. Box: 800, Riyadh, 11421 Saudi Arabia

Chemical Engineering Department, University of Malaya, Kuala Lumpur, Malaysia

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First published: 08 March 2022
Citations: 7

Abstract

Water is essential for the presence of life on this earth. However, water contamination due to the presence of heavy/toxic metals is one of the serious environmental issues for living beings. Several methods have been devoted to separating or removing those heavy metals from wastewater. Among them, membrane distillation (MD) has become one of the most attractive approaches due to its higher rejection rate than processes driven by pressure, lower energy consumption than traditional distillation processes. MD has gained significant attention for removing heavy metals than other techniques like ion exchange and adsorption in the last two decades. This review provides insight knowledge to the reader and focuses on how heavy metals impact humans and the environment, sources of heavy metals, current and especially removal methods using the MD method. Moreover, recent studies, challenges, and opportunities on MD membrane modules and heavy metal removal systems are discussed. More importantly, in this review, we have identified the gaps and opportunities that are required for enhancing the MD approach and its practical suitability for heavy metal removals. MD module and system showed high performance, proving their possible applications to remove heavy metal ions in water/wastewater treatment.

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