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The optimization, kinetics and mechanism of m-cresol degradation via catalytic wet peroxide oxidation with sludge-derived carbon catalyst
Wang, Yamin1,2; Wei, Huangzhao1; Zhao, Ying1; Sun, Wenjing1,2; Sun, Chenglin1
关键词Sludge-derived Carbon Catalyst Catalytic Wet Peroxide Oxidation Response Surface Methodology Kinetics Density Functional Theory
刊名JOURNAL OF HAZARDOUS MATERIALS
2017-03-15
DOI10.1016/j.jhazmat.2016.12.014
326页:36-46
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Technology ; Life Sciences & Biomedicine
类目[WOS]Engineering, Environmental ; Engineering, Civil ; Environmental Sciences
研究领域[WOS]Engineering ; Environmental Sciences & Ecology
关键词[WOS]FENTON OXIDATION ; AIR OXIDATION ; PHOTOCATALYTIC DEGRADATION ; PHENOLIC-COMPOUNDS ; WASTE-WATER ; ACTIVATED CARBONS ; P-CRESOL ; PERFORMANCE ; ACID
英文摘要The sludge-derived carbon catalyst modified with 0 degrees C HNO3 solution was tested in catalytic wet peroxide oxidation of m-cresol (100 mg L-1) with systematical mathematical models and theoretical calculation for the first time. The reaction conditions were optimized by response surface methodology (RSM) as T=60 degrees C, initial pH = 3.0, C-0.H2O2(30%) = 1.20 g L-1 (lower than the stoichiometric amount of 1.80 g L-1) and C-cat = 0.80 g L-1, with 96% of m-cresol and 47% of TOC converted after 16 min and 120 min of reaction, respectively, and xi (mg TOC/g H2O2 fed) = 83.6 mg/g. The end time of the first kinetic period in m-cresol model was disclosed to be correlated with the fixed residue m-cresol concentration of about 33%. Furthermore, the kinetic constants in models of TOC and H2O2 exactly provide convincing proof of three-dimensional response surfaces analysis by RSM, which showed the influence of the interaction between organics and H2O2 on effective H2O2 utilization. The reaction intermediates over time were identified by gas chromatography-mass spectrometer based on kinetics analysis. Four degradation pathways for m-cresol were proposed, of which the possibility and feasibility were well proven by frontier molecule orbital theory and atomic charge distribution via density functional theory method. (C) 2016 Elsevier B.V. All rights reserved.
语种英语
WOS记录号WOS:000392775400005
引用统计
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/151897
专题中国科学院大连化学物理研究所
作者单位1.Chinese Acad Sci, Dalian Inst Chem Phys, 457 Zhongshan Rd, Dalian 116023, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
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Wang, Yamin,Wei, Huangzhao,Zhao, Ying,et al. The optimization, kinetics and mechanism of m-cresol degradation via catalytic wet peroxide oxidation with sludge-derived carbon catalyst[J]. JOURNAL OF HAZARDOUS MATERIALS,2017,326:36-46.
APA Wang, Yamin,Wei, Huangzhao,Zhao, Ying,Sun, Wenjing,&Sun, Chenglin.(2017).The optimization, kinetics and mechanism of m-cresol degradation via catalytic wet peroxide oxidation with sludge-derived carbon catalyst.JOURNAL OF HAZARDOUS MATERIALS,326,36-46.
MLA Wang, Yamin,et al."The optimization, kinetics and mechanism of m-cresol degradation via catalytic wet peroxide oxidation with sludge-derived carbon catalyst".JOURNAL OF HAZARDOUS MATERIALS 326(2017):36-46.
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