An assessment of the lignocellulose-based biosorbents in removing Cr(VI) from contaminated water: A critical review

被引:18
作者
Basnet, Prabin [1 ,2 ]
Gyawali, Deepak [1 ,3 ]
Ghimire, Kedar Nath [1 ]
Paudyal, Hari [1 ]
机构
[1] Tribhuvan Univ, Cent Dept Chem, Kirtipur, Nepal
[2] Pokhara Univ, Nepal Engn Coll, Changunarayan, Bhaktapur, Nepal
[3] Govt Nepal, Dept Environm, Minist Forest & Environm, Kathmandu, Nepal
关键词
Biosorption; Cr(VI) remediation; Lignocellulosic waste; Living and dead cell biomasses; Complexation mechanism; HEXAVALENT CHROMIUM REMOVAL; INDUSTRIAL WASTE-WATER; HEAVY-METAL REMOVAL; AQUEOUS-SOLUTIONS; ACTIVATED CARBON; SELECTIVE ADSORPTION; TRIVALENT CHROMIUM; AGRICULTURAL WASTE; BATCH ADSORPTION; METHYLENE-BLUE;
D O I
10.1016/j.rechem.2022.100406
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Increasing industrialization and urbanization potentially enhance the uses of Cr(VI) compounds in electroplating, corrosion inhibition, tanning, printing, and dyeing, from where a large amount of waste containing Cr(VI) is released. An excessive amount of Cr(VI) in water is a matter of great concern for environmental scientists these days because of its significant threats to human health and the environment. The removal of Cr(VI) using low cost biosorbents derived from lignocellulosic biomasses is a feasible process due to their functional varieties, high efficiency, economic, and technical ease of operation. Literature shows that several batch studies extensively evaluated the biosorbent from living and dead biomass including waste produced from agriculture and various industries but large scale production and application are still missing. Biosorption of Cr(VI) using lignocellulosic material is a novel approach that has risen as one of the most versatile methods thus its promotion on the industrial level for the control of Cr(VI) pollution is particularly important. In the present paper, we have made critical reviews on the biosorption capacities of various lignocellulosic biosorbent, and biosorption mechanisms highlighting some important parameters: pH, contact time, dose, and temperature. Moreover, the list of potentially effective lignocellulose-based biosorbent until the dates has been compiled. The purpose of this review paper is to aid in the identification of current trends, potential study fields, and the challenges towards the practical application of the biosorption process from the literature together with our suggestions for future perspectives.
引用
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页数:16
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