铈铁氧化物催化湿式氧化医药废水研究

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英文篇名：Research on Catalytic Wet Oxidation of Pharmaceutical Wastewater by Cerium Iron Oxide 作者：张晓 ; 陈晨 ; 程婷 ; 赵健东 ; 陈刚 英文作者：ZHANG Xiao;CHEN Chen;CHENG Ting;ZHAO JiANDong;CHEN Gang;Department of City Science, Jiangsu City Vocational College;Nanjing University Yancheng environmental technology and Research Institute;School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology; 关键词：医药废水 ; 湿式氧化 ; 催化湿式氧化 ; 催化剂 英文关键词：pharmaceutical wastewater;;wet air oxidation;;catalytic wet air oxidation;;catalyst 中文刊名：水处理技术 英文刊名：Technology of Water Treatment 机构：江苏城市职业学院城市科学系;南京大学盐城环保技术与研究院;江苏科技大学环境与化学工程学院; 出版日期：2019-05-14 11:55 出版单位：水处理技术 年：2019 期：05 基金：国家自然科学基金项目(21407068);; 2016江苏高校“青蓝工程”中青年学术带头人培养对象;; 江苏省科技计划项目(江苏省政策引导类计划-产学研前瞻性联合研究BY2016068-01);; 江苏省高等学校自然科学研究面上项目(17KJD610001,17KJD610002);; 江苏城市职业学院“十三五”规划科研课题(16SSW-Z-001,17SSW-Z-Q-027);; 江苏省环境工程重点实验室科研开放基金项目(KF2015011);; 江苏省大学生创新实践训练项目(201814000003Y) 语种：中文; 页：53-57 页数：5 CN：33-1127/P ISSN：1000-3770 分类号：X703

摘要

研究制备铈铁氧化物催化剂,对材料微观结构与组成进行分析,并用于催化湿式氧化处理医药废水。结果表明,铈铁氧化物比表面积大,Ce和Fe主要以氧化物晶体矿物相存在,催化材料具有纳米微观结构。催化剂量、反应温度与时间对催化湿式氧化体系影响显著。催化剂量1～4 g/L时,污染物去除率随催化剂量增加而增大,催化剂量为4 g/L时,催化湿式氧化对TOC与COD去除率比湿式氧化均提高近45%。不同温度下催化湿式氧化去除效果均高于湿式氧化。反应温度低于200℃时,2个体系对废水TOC与COD去除率随温度升高而增加;2个体系污染物去除率随反应时间增加均逐渐提高,而TOC与COD平均去除速率随反应时间延长而整体下降。2级动力学方程可较好拟合2个体系对废水处理过程。
        The cerium iron oxide catalyst was prepared, and the microstructure and composition of the materials was analyzed. The catalyst was applied to catalytic wet air oxidation treatment of pharmaceutical wastewater. The results showed that, the cerium iron oxide catalytic material had a large specific surface area; Ce and Fe mainly existed in the form of oxide crystal mineral phase, and the catalytic material had a nano-microstructure. The amount of catalyst, reaction temperature and reaction time had significant effect on catalytic wet air oxidation treatment of pharmaceutical wastewater. When the amount of catalyst was from 1 to 4 g/L, the removal rate of pollutants was enhanced with the increase of catalyst amount. Catalytic wet air oxidation improved the removal rates of TOC and COD by nearly 45% compared to the wet air oxidation as the catalyst amount was 4 g/L. The removal efficiency of catalytic wet air oxidation at different reaction temperatures was higher than that of wet air oxidation system. The TOC and COD removal rates of two systems increased with the increase of reaction temperature when the reaction temperature was lower than 200 ℃. The removal rate of pollutants in pharmaceutical wastewater by both systems increased gradually with the increase of reaction time. The average removal rate of TOC and COD decreased as the reaction time extended. The second-order kinetic equation could better fit the process of two systems on pharmaceutical wastewater treatment.

引文

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