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Application of modified red mud in environmentally-benign applications: A review paper

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journal contribution
posted on 11.05.2020, 12:45 by Collin G Joseph, Yun Hin Taufiq-Yap, Vigneswar Krishnan, Gianluca Li-PumaGianluca Li-Puma
Red mud (RM) is a waste product that results from bauxite refining via the Bayer process. Its disposal remains an issue which raises significant environmental concerns, particularly if disposed on land or water bodies. Much research has been done on the use of red mud for environmentally-benign applications such as wastewater treatment, catalysis, the production of construction materials and glass ceramics, and for the recovery of metals. This paper reviews the current efforts made in the utilization of red mud as a valuable industrial by-product, which in turn should minimize its harmful impact on the environment. This detailed review compiles and highlights a variety of novel applications of modified red mud as a coagulant, an adsorbent for wastewater treatment, as well as, its use in catalytic processes and in building materials. The physico-chemical properties of red mud can be tuned by a range of treatment methods include acidification, neutralization and heat treatment. As revealed from the literature reviewed, modifications on red mud for the removal of various types of contaminants have shown promising results. However, further amendment and modifications on red mud are needed to utilize this industrial waste in many other industrial applications.

Funding

Research Management Centre, Universiti Putra Malaysia in collaboration with the Centre for Research & Innovation of Universiti Malaysia Sabah (Grant No. RACE0008-ST-2013).

History

School

  • Aeronautical, Automotive, Chemical and Materials Engineering

Department

  • Chemical Engineering

Published in

Environmental Engineering Research

Volume

25

Issue

6

Pages

795 - 806

Publisher

Korean Society of Environmental Engineers

Version

VoR (Version of Record)

Rights holder

© Korean Society of Environmental Engineers

Publisher statement

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Acceptance date

18/11/2019

Publication date

2019-11-21

Copyright date

2020

ISSN

1226-1025

eISSN

2005-968X

Language

en

Depositor

Prof Gianluca Li Puma. Deposit date: 10 May 2020

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