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HERO ID
5931950
Reference Type
Journal Article
Title
Removal of dye from polluted water using novel nano manganese oxide-based materials
Author(s)
Islam, MdA; Ali, I; Karim, SMA; Firoz, M; Chowdhury, AlN; Morton, DW; Angove, MJ
Year
2019
Is Peer Reviewed?
1
Journal
Journal of Water Process Engineering
ISSN:
2214-7144
Volume
32
DOI
10.1016/j.jwpe.2019.100911
Web of Science Id
WOS:000504472800021
Abstract
Dyes are priority pollutants, commonly found at significant concentrations in textile effluents. The presence of dyes stuffs in wastewater can cause severe problems to aquatic life and human beings. Therefore, the removal of dyes from wastewater is important in order to minimize their hazardous effects on the environment. One way of removing dyes is to use nanosized manganese oxides (MnOs). To date, there has been much work reported on the use of nanosized MnOs as sorbents for dyestuffs. They are promising sorbents for commercial use due to their amorphous nature, high specific surface areas (SSA), mesoporous structure, and low to the moderate point of zero charge (pH(PZC)). This review summarizes the toxicity and recent advances for removing dyes from wastewater using nanosized MnO sorbents. The article also describes the various experimental parameters necessary for adsorption optimization, such as adsorption time, pH, initial dye concentration, amount of sorbent and temperature. Adsorption mechanisms investigated by various modeling approaches are also discussed. In particular, it was observed that much work has been reported on the use of birnessite and its composites for dye removal. There are many papers reporting on the use of MnO in batch mode dye removal, but very few that report on the use of MnO in continuous column removal systems. Therefore, there is still a considerable need for further research to develop effective and economical large scale MnO column systems for commercial use.
Keywords
Dye removal; Nano manganese oxide sorbents; Optimization; Adsorption; Wastewater
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