Electrochemical treatment of alkali decrement wastewater containing terephthalic acid using iron electrodes

被引：32

作者：

Anand, Murarka Vivek ^{[1
]}

Srivastava, Vimal Chandra ^{[1
]}

Singh, Seema ^{[1
]}

Bhatnagar, Rajendra ^{[1
]}

Mall, Indra Deo ^{[1
]}

机构：

[1] Indian Inst Technol, Dept Chem Engn, Roorkee 247667, Uttar Pradesh, India

来源：

JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS | 2014年 / 45卷 / 03期

关键词：

Electrocoagulation; Terephthalic acid; Ethylene glycol; Residues; Sludge analysis; REMOVAL; ELECTROCOAGULATION; DECOLORIZATION; COAGULATION; OXIDATION;

D O I：

10.1016/j.jtice.2013.08.010

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

In this study, treatment of simulated alkali decrement wastewater containing terephthalic acid (TPA) has been investigated by electrochemical treatment using stainless steel as electrode material. Five operational parameters, namely current density: 31:25-156.25 A/m(2); electrode gap: 1-2 cm; NaCl concentration: 0-2 g/l; pH: 7-12 and TPA concentration: 400-1000 mg/l were investigated for their effect removal efficiency. For a solution having 400 mg/l TPA and 560 mg/l chemical oxygen demand (COD), 72% COD removal and approximate to 77% TPA removal efficiency was obtained at optimal conditions of current density approximate to 118 A/m(2), electrode gap = 1 cm and pH approximate to 7. Presence of ethylene glycol in the wastewater was found to decrease the treatment efficiency. Settling characteristics of the slurry obtained at optimum condition have been studied. Thermal decomposition of residues has also been investigated. (C) 2013 Taiwan Institute of Chemical Engineers. Published by Elsevier B.V. All rights reserved.

引用

页码：908 / 913

页数：6

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