Sustainable Adsorbents from Plant-Derived Agricultural Wastes for Anionic Dye Removal: A Review

Abu Naser Md Ahsanul Haque (), Nigar Sultana, Abu Sadat Muhammad Sayem and Shamima Akter Smriti
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Abu Naser Md Ahsanul Haque: Institute for Frontier Materials, Deakin University, Waurn Ponds, VIC 3216, Australia
Nigar Sultana: Department of Chemistry, Jagannath University, Dhaka 1100, Bangladesh
Abu Sadat Muhammad Sayem: Manchester Fashion Institute, Manchester Metropolitan University, Manchester M15 6BG, UK
Shamima Akter Smriti: Department of Fabric Engineering, Bangladesh University of Textiles, Dhaka 1208, Bangladesh

Sustainability, 2022, vol. 14, issue 17, 1-25

Abstract: The extensive use of dyes in numerous industries results in massive dye discharge in the wastewater, which is a major cause of water pollution. Globally, the consumption of dyes is near seven hundred thousand tons across different sectors, of which around 10–15% goes into the wastewater. Among the dye kinds, anionic dyes make up the main proportion, having a 32–90% share in the wastewater. Different plant-derived wastes, which are sustainable given their natural abundance, effectiveness, and low cost, are frequently proposed for dye separation. However, these adsorbents are inherently more suitable for cationic dyes than anionic dyes. In recent years, the modification of these wastes has been progressively considered to suit them to anionic dye removal. These modifications involve mechanical, thermal, or chemical treatments, or combinations. These attempts propose two-way benefits, as one abundant waste is being used to cure another severe problem, and eventually both could be diminished. This review has a key focus on the evaluation of plant-derived adsorbents and their modifications, and particularly for anionic dye adsorption. Overall, the mechanism of adsorption and the suitability of the current methods are discussed, and their future potential is explored.

Keywords: lignocellulose; natural biomass; dye wastewater; adsorption isotherm; Congo Red; diffusion and kinetics (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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