Activated carbon from sugarcane bagasse ash for melanoidins recovery

被引：30

作者：

Kaushik, A. ^{[1
]}

Basu, S. ^{[1
]}

Singh, K. ^{[1
]}

Batra, V. S. ^{[1
]}

Balakrishnan, M. ^{[1
]}

机构：

[1] TERI, Darbari Seth Block,IHC Complex,Lodhi Rd, New Delhi 110003, India

来源：

JOURNAL OF ENVIRONMENTAL MANAGEMENT | 2017年 / 200卷

关键词：

Unburnt carbon; Sugarcane bagasse ash; Melanoidins; Adsorption; Desorption; WASTE-WATER; FLY-ASH; REMOVAL; DECOLORIZATION;

D O I：

10.1016/j.jenvman.2017.05.060

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

This work investigates the value added utilization of two sugar-distillery wastes: (i) melanoidins, which are complex Maillard reaction products in molasses distillery wastewater, and (ii) unburnt carbon in sugarcane bagasse ash. Activated unburnt carbon (AUC), prepared by deashing and steam activation, had properties comparable to commercial activated carbon (CAC). Both carbons are suitable for melanoidins adsorption followed by desorption using 25% pyridine solution. For AUC, the equilibrium adsorption data is well described by Langmuir isotherm up to 35 degrees C while Freundlich model fits better at higher temperature. Adsorption using CAC followed Freundlich isotherm at all temperatures. Both carbons followed pseudo second order kinetics and displayed endothermic physisorption. Recovery of melanoidins from AUC (78%) was close to that observed with CAC (80%). (C) 2017 Elsevier Ltd. All rights reserved.

引用

页码：29 / 34

页数：6

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