EFFICIENCY IN ELECTRO-FENTON OXIDATION OF CTMP PULPING WASTEWATER

被引：0

作者：

Zhao, Qiang ^{[1
]}

Zhang, Xueming ^{[1
]}

Sun, Dezhi ^{[1
]}

Jin, Xiaojuan ^{[1
]}

Wang, Zhaohong ^{[1
]}

机构：

[1] Beijing Forestry Univ, Coll Mat Sci & Technol, Beijing 100083, Peoples R China

来源：

CELLULOSE CHEMISTRY AND TECHNOLOGY | 2018年 / 52卷 / 9-10期

基金：

中国国家自然科学基金;

关键词：

Fenton oxidation; electro-Fenton; CTMP; preimpregnation wastewater; FTIR;

D O I：

暂无

中图分类号：

TB3 [工程材料学]; TS [轻工业、手工业、生活服务业];

学科分类号：

0805 ; 080502 ; 0822 ;

摘要：

Wastewater originating from chemithermomechanical pulping (CTMP) contains various organic compounds and therefore it is difficult to treat. To increase the effect of oxidation, the electro-Fenton process was employed in this study. Fenton's reagent (H2O2 and Fe2+) was produced by simultaneous reduction of O-2 and Fe3+ on a stainless cathode in an acidic medium. Electrochemistry combined with Fenton's reagent provides the hydroxyl radical, a powerful oxidant. The chemical oxygen demand (COD) removal efficiencies and the turbidity of electro-Fenton oxidation on preimpregnated wastewater of CTMP were investigated. The optimal electro-Fenton oxidation conditions were determined as follows: pH 4, applied voltage of 12 V, current of 0.2 A, electrode space of 2 cm and aeration gas flow of 16 L/h. The CODcr removal rate could reach 40.1% and the turbidity removal rate achieved by the aforementioned electro-Fenton process was 49.9%. Fourier transform infrared spectroscopy showed that electro-Fenton oxidation induced higher degradation of preimpregnated wastewater of CTMP than Fenton oxidation alone.

引用

页码：921 / 930

页数：10

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