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浙江大学学报（理学版）
浙江大学学报（理学版）  2018, Vol. 45 Issue (4): 461-467    DOI: 10.3785/j.issn.1008-9497.2018.04.013
环境科学     
改性磁铁矿/H2O2非均相类Fenton体系催化降解橙黄Ⅱ的研究
荆王松1,2, 王长智2, 梅荣武2, 史惠祥1, 徐峰3
1. 浙江大学 环境与资源学院, 浙江 杭州 310058;
2. 浙江省环境保护科学设计研究院, 浙江 杭州 310007;
3. 嘉兴市绿野环境工程有限公司, 浙江 嘉兴 314000
A study on catalytic degradation of Orange Ⅱ by modified magnetite/H2O2 heterogeneous Fenton-like system
JING Wangsong1,2, WANG Changzhi2, MEI Rongwu2, SHI Huixiang1, XU Feng3
1. College of Environmental and Resources, Zhejiang University, Hangzhou 310027, China;
2. Environmental Science Research & Design Institute of Zhejiang Province, Hangzhou 310007, China;
3. Jiaxing Green Environment Engineering Co., Ltd, Jiaxing 314000, Zhejiang Province, China
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摘要： 为了提高非均相类Fenton体系的催化效率，采用浓硫酸对磁铁矿粉进行表面改性，得到改性磁铁矿（M-Fe3O4）.探究以M-Fe3O4为催化剂的非均相类Fenton体系对橙黄Ⅱ的氧化降解效果，并考察M-Fe3O4投加量、H2O2投加量、反应初始pH值等因素对橙黄Ⅱ脱色率和TOC去除率的影响.XRD、TEM和FT-IR表征结果表明，表面改性后M-Fe3O4粒径减小，比表面积增加，且表面覆盖硫酸铁混盐等活性组分.与磁铁矿/H2O2和FeSO4/H2O2两体系相比，M-Fe3O4/H2O2非均相类Fenton体系对橙黄Ⅱ（初始浓度为500 mg·L-1）的降解效率明显提升.在最佳反应条件（pH=6，M-Fe3O4投加量为0.25 g·L-1，H2O2投加量为4 mL·L-1）下，橙黄Ⅱ脱色率达到92%，TOC去除率达到47%，为实际废水处理应用提供了实验支撑.
关键词： 改性;  磁铁矿;  非均相类Fenton;  降解;  橙黄Ⅱ    
Abstract: In order to enhance the catalyst efficiency of heterogeneous Fenton-like system, magnetite is activated by H2SO4 to obtain modified Fe3O4(M-Fe3O4). The catalyst activity is evaluated by degradation on Orange Ⅱ in the heterogeneous Fenton system. The effect of M-Fe3O4 dosages, H2O2 dosages and initial pH are also evaluated. XRD,TEM and FT-IR results showed that after modification, the M-Fe3O4 particle size is reduced while the specific surface area is increased, the surface of catalyst is covered with iron sulfate salts. Compared with magnetite/H2O2 and FeSO4/H2O2 system, M-Fe3O4/H2O2 Fenton system has a higher efficiency on degradation of Orange Ⅱ(concentration of 500 mg·L-1). Under optimum conditions:pH=6, 0.25 g·L-1 M-Fe3O4, 4 mL·L-1 H2O2, 92% discoloration and 47% degradation of TOC are achieved,which provides an experimental support for further practical wastewater treatment.
Key words: modified    magnetite    heterogeneous Fenton-like    degradation    Orange Ⅱ
收稿日期: 2017-12-06 出版日期: 2018-07-12
CLC:  X788  
基金资助: 国家水体污染控制与治理科技重大专项（2017ZX07206-002）.
通讯作者: 史惠祥,通信作者,ORCID:http://orcid.org/0000-0002-5704-4229,E-mail:huixiang_shi@163.com.     E-mail: huixiang_shi@163.com
作者简介: 荆王松(1991-),ORCID:http://orcid.org/0000-0002-0809-7244,男,硕士,主要从事水污染治理研究.
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引用本文:

荆王松, 王长智, 梅荣武, 史惠祥, 徐峰. 改性磁铁矿/H2O2非均相类Fenton体系催化降解橙黄Ⅱ的研究[J]. 浙江大学学报（理学版）, 2018, 45(4): 461-467.

JING Wangsong, WANG Changzhi, MEI Rongwu, SHI Huixiang, XU Feng. A study on catalytic degradation of Orange Ⅱ by modified magnetite/H2O2 heterogeneous Fenton-like system. Journal of Zhejiang University (Science Edition), 2018, 45(4): 461-467.

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https://www.zjujournals.com/sci/CN/10.3785/j.issn.1008-9497.2018.04.013    或    https://www.zjujournals.com/sci/CN/Y2018/V45/I4/461

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