Process optimization for degradation of reactive Brilliant Red X-3B by Fenton's reagent

doi:10.3969/j.issn.0438-1157.2013.03.037

CIESC Journal ›› 2013, Vol. 64 ›› Issue (3): 1049-1054.DOI: 10.3969/j.issn.0438-1157.2013.03.037

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Process optimization for degradation of reactive Brilliant Red X-3B by Fenton's reagent

ZHANG Xianbing, YUAN Jiajia, DONG Wenyi, YANG Wei

Harbin Institute of Technology Shenzhen Graduate School, Shenzhen Key Laboratory of Water Resource Application and Environmental Pollution Control, Shenzhen 518055, Guangdong, China

Received:2012-05-08 Revised:2012-09-19 Online:2013-03-05 Published:2013-03-05
Supported by:
supported by the China Major Science and Technology Program for Water Pollutant Control and Treatment(2012ZX07206-002-02,2009ZX07317-009).

芬顿法处理活性艳红X-3B的试验优化及降解规律

张先炳, 袁佳佳, 董文艺, 杨伟

哈尔滨工业大学深圳研究生院,深圳市水资源利用与环境污染控制重点实验室,广东深圳 518055

通讯作者: 张先炳(1985—),男,博士研究生。
作者简介:张先炳(1985—),男,博士研究生。
基金资助:
水体污染控制与治理科技重大专项(2012ZX07206-002-02,2009ZX07317-009)。

Abstract

Abstract: Chemical oxidation by Fenton's reagent of a reactive azo dye (Brilliant Red X-3B) had been optimized using experimental design.The variables considered were pH,temperature as well as initial concentrations of hydrogen peroxide and ferrous ion.The results show that initial pH value has the biggest effect on TOC removal and decoloration.Based on orthogonal experiment design,single factor experiment was conducted to optimize reaction conditions.The results reveal that the optimum reaction conditions obtained are pH 3,hydrogen peroxide(30%) 2.5 mmol稬^-1,C(H₂O₂)/C(FeSO₄) ratio 10,and the rates of decoloration and TOC removal for simulated wastewater are 98.93% and 48.81%,respectively.Furthermore,the effect of temperature on the TOC removal rate is remarkable,and the decolorization rate follows second-order kinetic model.Using Arrhenius equation,the activation energy calculated for degradation of reactive Brilliant Red X-3B in Fenton reaction system is about 107 kJ穖ol^-1.

Key words: Fenton's reagent, azo dyes, reactive Brilliant Red X-3B, decoloration, activation energy

摘要： 通过试验方法优化,研究了芬顿体系中pH值、温度、H₂O₂投加量以及过氧化氢/硫酸亚铁摩尔比C(H₂O₂)/C(FeSO₄)对活性艳红X-3B脱色及总有机碳(total organic carbon,TOC)去除率的影响。结果表明:初始pH值对脱色率和TOC去除率的影响均最大。在正交试验的基础上,通过单因素试验进一步优化了反应条件,得出芬顿法去除活性艳红X-3B的最佳反应条件为pH=3、H₂O₂投加量为2.5 mmol·L^-1、C(H₂O₂)/C(FeSO₄)=10时,模拟废水的脱色率可达98.93%,TOC去除率可达48.81%。此外,芬顿体系的反应速率受温度的影响较大,色度去除符合二级动力学模型,根据Arrhenius公式计算得出活性艳红X-3B在芬顿体系中的反应活化能约为107 kJ·mol^-1。

关键词: 芬顿法, 偶氮染料, 活性艳红X-3B, 脱色, 活化能

CLC Number:

TQ028.8

ZHANG Xianbing, YUAN Jiajia, DONG Wenyi, YANG Wei. Process optimization for degradation of reactive Brilliant Red X-3B by Fenton's reagent[J]. CIESC Journal, 2013, 64(3): 1049-1054.

张先炳, 袁佳佳, 董文艺, 杨伟. 芬顿法处理活性艳红X-3B的试验优化及降解规律[J]. 化工学报, 2013, 64(3): 1049-1054.

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Process optimization for degradation of reactive Brilliant Red X-3B by Fenton's reagent

芬顿法处理活性艳红X-3B的试验优化及降解规律

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