高级搜索

Fe0/O2体系降解苯胺废水机理

,  ,  , 

downloadPDF

上一篇

下一篇

王亚娥, 嵇斌, 李杰, 王文娟. Fe0/O2体系降解苯胺废水机理[J]. 环境工程学报, 2018, 12(10): 2768-2775. doi: 10.12030/j.cjee.201803243
引用本文: 王亚娥, 嵇斌, 李杰, 王文娟. Fe0/O2体系降解苯胺废水机理[J]. 环境工程学报, 2018, 12(10): 2768-2775. doi: 10.12030/j.cjee.201803243
shu
WANG Yae, JI Bin, LI Jie, WANG Wenjuan. Mechanism of degradation of aniline wastewater by Fe0/O2 system[J]. Chinese Journal of Environmental Engineering, 2018, 12(10): 2768-2775. doi: 10.12030/j.cjee.201803243
Citation: WANG Yae, JI Bin, LI Jie, WANG Wenjuan. Mechanism of degradation of aniline wastewater by Fe0/O2 system[J]. Chinese Journal of Environmental Engineering, 2018, 12(10): 2768-2775. doi: 10.12030/j.cjee.201803243
shu

Fe0/O2体系降解苯胺废水机理

  • 1.

    兰州交通大学环境与市政工程学院，兰州 730070

  • 2.

    四川铁研环保科技有限公司，兰州 730000

  • 基金项目:

    国家自然科学基金资助项目（51468030）

    国家重点研发项目（2016YFC0400705）

Mechanism of degradation of aniline wastewater by Fe0/O2 system

  • 1.

    School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China

  • 2.

    Sichuan Teyan Environmental Protection Technology Co.Ltd., Lanzhou 730000, China

  • Fund Project:

  • 摘要: 以苯胺为研究对象，在Fe0/O2体系中开展了降解实验。考察了苯胺在Fe0/O2体系与单一Fe0体系和单一O2体系下的降解效果，探究了Fe0/O2体系中活性氧化物的产生及降解苯胺的可能途径。结果表明：初始浓度为5.1 mg·L-1的苯胺在Fe0/O2体系中可完全降解，降解过程存在协同效应，在Fe0/O2体系下降解速率常数为单一零价铁体系与单一氧化体系降解速率常数之和的46.15倍；Fe0/O2体系中活性氧化物主要有H2O2和·OH等自由基，苯胺在体系中的降解以·OH氧化为主，可能的降解途径为矿化和聚合，并以矿化为主；苯胺降解过程中氮素产物的变化表明降解体系中存在大量含氮有机物等中间产物。
    Abstract: The degradation experiments of aniline as target in Fe0/O2 system were studied. Two control systems of Fe0 and O2 solely were set up to confirm the synergistic reaction between Fe0 and O2 process. Meanwhile, the generation of active oxides (ROS) and the possible degradation pathways of aniline in Fe0/O2 system were investigated. The results show that the aniline with initial concentration of 5.1 mg·L-1 can be completely degraded in the Fe0/O2 system, and there is existed a synergistic effects between Fe0 and O2 process, the synergistic index was calculated to be 46.15 higher than that in two control systems of Fe0 and O2 solely. In the study, the active oxides in the Fe0/O2 system mainly include H2O2 and ·OH and other free radicals, the oxidation of ·OH played a dominant role in the degradation process and the degradation of aniline by Fe0/O2 system. The possible degradation mechanism is the mineralization and the polymerization, in which dominated by mineralization. In addition, the detected changes of nitrogen products indicated that the byproducts of organic nitrogenous were existed during aniline degradation.
  • 加载中
  • [1] CHEN W S，HUANG C P.Mineralization of aniline in aqueous solution by electrochemical activation of persulfate[J].Chemosphere,2015,125:175-181 10.1016/j.chemosphere.2014.12.053
    [2] CHEN B.Toxicity assessment of aromatic amines to Pseudomonas luteola: Chemostat pulse technique and dose-response analysis[J].Process Biochemistry,2006,41(7):1529-1538 10.1016/j.procbio.2006.02.014
    [3] 张婷婷,张爱丽,周集体.活性炭吸附分离-生物再生法处理高盐苯胺废水[J].化工环保,2006,26(2):107-110
    [4] 张晓飞,孙秉琳,张华,等.苯胺废水光催化-过氧化氢协同氧化处理技术研究[J].现代化工,2016,36(6):126-128
    [5] BRILLASA E,MURA E,SAULEDAA R,et al.Aniline mineralization by AOPs: Anodic oxidation, photocatalysis, electro-Fenton and photoelectro-Fenton processes[J].Applied Catalysis B:Environmental,1998,16(1):31-42 10.1016/S0926-3373(97)00059-3
    [6] 王治业,祝英,季彬,等.生物强化技术处理苯胺废水难降解有机物的研究[J].环境工程,2014,32(S1):16-18
    [7] 朱慧琳,曾喜莉,罗晓仪,等.纳米磁铁矿/生物质炭催化对Fenton氧化降解苯酚的增强机理[J].环境工程,2017,35(10):39-43
    [8] 曹国民,丁伟,杨国平,等.Fenton试剂法降解废水中的芳香类化合物[J].华东理工大学学报(自然科学版),2008,34(6):830-833
    [9] 穆毅,贾法龙,艾智慧,等.纳米零价铁活化分子氧原理及降解有机污染物性能增强策略[J].化学学报,2017,75(6):538-543 10.6023/A17020047
    [10] FEITZ A J, JOO S H, GUAN J, et al.Oxidative transformation of contaminants using colloidal zero-valent iron[J].Colloids and Surfaces A: Physicochemical and Engineering Aspects,2005,265(1/2/3):88-94 10.1016/j.colsurfa.2005.01.038
    [11] ENGLEHARDT J D, MEEROFF D E, ECHEGOYEN L, et al.Oxidation of aqueous EDTA and associated organics and co-precipitation of inorganics by ambient iron mediated aeration[J].Environmental Science & Technology,2007,41(1):270-276 10.1021/es061605j
    [12] Enhanced aerobSHEN W J,MU Y,WANG B N, et al.Enhanced aerobic degradation of 4-chlorophenol with iron-nickel nanoparticles[J].Applied Surface Science,2017,393:316-324 10.1016/j.apsusc.2016.10.020
    [13] SHIMIZU A, TOKUMURA M, NAKAJIMA K, et al.Phenol removal using zero-valent iron powder in the presence of dissolved oxygen: Roles of decomposition by the Fenton reaction and adsorption/precipitation[J].Journal of Hazardous Materials,2012,201-202:60-67 10.1016/j.jhazmat.2011.11.009
    [14] WU Q, HUA T, ZHOU Q X.Treatment and remediation of a wastewater lagoon using micro-electrolysis and modified DAT/IAT methods[J].Journal of Environmental Sciences,2011,23(3):388-395 10.1016/S1001-0742(10)60421-4
    [15] LIU Y C, ZHANG G M,FANG S Y, et al.Degradation of aniline by heterogeneous Fenton's reaction using a Ni-Fe oxalate complex catalyst[J].Journal of Environmental Management,2016,182:367-373 10.1016/j.jenvman.2016.07.084
    [16] 吴志敏,张丽.超声波/零价铁体系降解苯胺废水的影响因素及机理研究[J].安全与环境工程,2010,17(4):13-16
    [17] 李骋,樊金红,马鲁铭.Fe0/O2体系产生H2O2和·OH等活性氧化剂的研究进展[J].环境污染与防治,2012,34(10):76-81
    [18] ANOTAI J, LU M C, CHEWPREECHA P.Kinetics of aniline degradation by Fenton and electro-Fenton processes[J].Water Research,2006,40(9):1841-1847 10.1016/j.watres.2006.02.033
    [19] 宁军,陈立伟,蔡天明.臭氧催化氧化降解苯胺的机理[J].环境工程学报,2013,7(2):551-556
    [20] BI Y G,HUANG M X.Analysis degradation effect of aniline wastewater by ultrasound[J].Advanced Materials Research,2013,773:923-926 10.4028/www.scientific.net/AMR.773.923
    [21] BRILLAS E, CASADO J.Aniline degradation by electro-Fenton? and peroxi-coagulation processes using a flow reactor for wastewater treatment[J].Chemosphere,2002,47(3):241-248 10.1016/S0045-6535(01)00221-1
    [22] BENITO A,PENADES A,LLIBERIA J L, et al.Degradation pathways of aniline in aqueous solutions during electro-oxidation with BDD electrodes and UV/H2O2 treatment[J].Chemosphere,2017,116(1/2/3):230-237 10.1016/j.chemosphere.2016.09.105
    [23] 杨春维,桂雯雯,张书豪,等.电辅助Fe2+活化过硫酸盐法降解水中苯胺[J].环境科学与技术,2017,40(4):171-175
    [24] LI Y J, WANG F, ZHOU G D, et al.Aniline degradation by electrocatalytic oxidation[J].Chemosphere,2003,53(10):1229-1234 10.1016/S0045-6535(03)00590-3
    [25] 邹红,王丽萍,余美维.Fenton氧化降解苯胺及机制研究[J].安徽大学学报(自然科学版),2016,40(4):101-108
    [26] ISHIKAWA S, BABA K, HANADA Y, et al.Photodecomposition of o-chloroaniline in aqueous solution with low pressure mercury lamp[J].Bulletin of Environmental Contamination and Toxicology,1989,42(1):65-70
    [27] NITOIA I,OANCEA P,CRISTEA I, et al.Kinetics and mechanism of chlorinated aniline degradation by TiO2 photocatalysis[J].Journal of Photochemistry and Photobiology A: Chemistry,2015,298:17-23
    [28] KUMAR A, MATHUR N.Photocatalytic degradation of aniline at the interface of TiO2 suspensions containing carbonate ions[J].Journal of Colloid and Interface Science,2006,300(1):244–252 10.1016/j.jcis.2006.03.046
    [29] SUN S F, LIU Y L, MA J, et al.Transformation of substituted anilines by ferrate(VI): Kinetics, pathways, and effect of dissolved organic matter[J].Chemical Engineering Journal,2018,332:245-252 10.1016/j.cej.2017.08.116
    [30] AGNES T R,SONNTAG V, ERIKA R, et al.Ozonation of anilines: Kinetics, stoichiometry, product identification and elucidation of pathways[J].Water Research,2016,98:147-159 10.1016/j.watres.2016.04.001
  • 加载中
WeChat 点击查看大图
计量
  • 文章访问数:  2774
  • HTML全文浏览数:  2579
  • PDF下载数:  167
  • 施引文献:  0
出版历程
  • 刊出日期:  2018-10-11

Fe0/O2体系降解苯胺废水机理

  • 1. 兰州交通大学环境与市政工程学院，兰州 730070
  • 2. 四川铁研环保科技有限公司，兰州 730000
基金项目:

国家自然科学基金资助项目（51468030）

国家重点研发项目（2016YFC0400705）

摘要: 以苯胺为研究对象，在Fe0/O2体系中开展了降解实验。考察了苯胺在Fe0/O2体系与单一Fe0体系和单一O2体系下的降解效果，探究了Fe0/O2体系中活性氧化物的产生及降解苯胺的可能途径。结果表明：初始浓度为5.1 mg·L-1的苯胺在Fe0/O2体系中可完全降解，降解过程存在协同效应，在Fe0/O2体系下降解速率常数为单一零价铁体系与单一氧化体系降解速率常数之和的46.15倍；Fe0/O2体系中活性氧化物主要有H2O2和·OH等自由基，苯胺在体系中的降解以·OH氧化为主，可能的降解途径为矿化和聚合，并以矿化为主；苯胺降解过程中氮素产物的变化表明降解体系中存在大量含氮有机物等中间产物。

English Abstract

参考文献 (30)

目录

/

返回文章
返回

Copyright © 2019 中国科学院生态环境研究中心