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CWPO体系中污泥炭催化降解头孢氨苄废水

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余丽, 刘允康, 王国英, 刘伟军, 马磊. CWPO体系中污泥炭催化降解头孢氨苄废水[J]. 环境化学, 2020, (5): 1262-1270. doi: 10.7524/j.issn.0254-6108.2019050602
引用本文: 余丽, 刘允康, 王国英, 刘伟军, 马磊. CWPO体系中污泥炭催化降解头孢氨苄废水[J]. 环境化学, 2020, (5): 1262-1270. doi: 10.7524/j.issn.0254-6108.2019050602
shu
YU Li, LIU Yunkang, WANG Guoying, LIU Weijun, MA Lei. Catalytic wet peroxide oxidation of wastewater containing cephalexin with sludge derived carbon catalyst[J]. Environmental Chemistry, 2020, (5): 1262-1270. doi: 10.7524/j.issn.0254-6108.2019050602
Citation: YU Li, LIU Yunkang, WANG Guoying, LIU Weijun, MA Lei. Catalytic wet peroxide oxidation of wastewater containing cephalexin with sludge derived carbon catalyst[J]. Environmental Chemistry, 2020, (5): 1262-1270. doi: 10.7524/j.issn.0254-6108.2019050602
shu

CWPO体系中污泥炭催化降解头孢氨苄废水

  • 1. 太原理工大学环境科学与工程学院, 太原, 030024;

  • 2. 中国辐射防护研究院, 太原, 030024;

  • 3. 山西晋环科源环境资源科技有限公司, 太原, 030024;

  • 4. 北京石油化工学院, 燃料清洁化及高效催化减排技术北京市重点实验室, 北京, 102617

    • 通讯作者: 马磊, E-mail: malei@bipt.edu.cn
  • 基金项目:

    山西省重点研发计划（201803D31003）和山西省自然科学基金（201901D211029）资助.

Catalytic wet peroxide oxidation of wastewater containing cephalexin with sludge derived carbon catalyst

  • 1. College of Environmental Science and Engineering, Taiyuan University of Technology, Taiyuan, 030024, China;

  • 2. China Institute for Radiation Protection, Taiyuan, 030024, China;

  • 3. Shanxi Jinhuankeyuan Environmental Resources Technology Co. Ltd, Taiyuan, 030024, China;

  • 4. Beijing Key Laboratory of Fuels Cleaning and Advanced Catalytic Emission Reduction Technology/College of Chemical Engineering, Beijing Institute of Petrochemical Technology, Beijing, 102617, China

    • Corresponding author: MA Lei, malei@bipt.edu.cn
  • Fund Project: Supported by Shanxi Key Program of Research and Development(201803D31003) and Natural Science Foundation of Shanxi Province (201901D211029).

  • 摘要: 通过加入正丁醇以共沸蒸馏法对剩余污泥进行脱水，再对污泥进行干燥、焙烧和改性得到污泥炭催化剂.将污泥炭催化剂用于催化湿式过氧化氢氧化体系，处理头孢氨苄废水.采用响应面法中的中心组合设计实验，考察反应温度、初始pH和过氧化氢投加量对TOC降解率的影响，反应温度和过氧化氢投加量具有显著交互作用.在最佳实验条件下（T=50℃、pH=3.00、H2O2=0.071 mol·L-1），TOC去除率为59%，接近预测的TOC去除率（60%），在95%的置信区间内，说明该模型可靠.SEM、TEM、TPD-MS、XPS和FT-IR等分析结果表明污泥炭表面存在纳米尺寸片状结构，这种结构中存在酚羟基、羰基、羧基等活性官能团和醌类结构，且ICP-OES、EDAX和57Fe穆斯堡尔谱等分析结果表明，污泥炭中含有不同价态的Fe，能有效地催化过氧化氢分解，将头孢氨苄转化为苯甲酸、丁二酮等小分子物质，再进一步完全氧化.
    Abstract: The dehydration of excess sludge was carried out by azeotropic distillation with the addition of n-butanol. Then, the sludge was dried, calcinated and modified successively for preparing sludge derived carbon catalyst which was applied to treating the wastewater containing cephalexin in catalytic wet peroxide oxidation (CWPO) process. The effects of reaction temperature, initial pH and hydrogen peroxide dosage on TOC removal rate were investigated by the central composite design (CCD) of response surface methodology. The result indicated that reaction temperature interacted with hydrogen peroxide dosage significantly. Under the optimal experimental condition (T=50 ℃, pH=3.0 and H2O2=0.071 mol·L-1), TOC removal rate (59%) was close to the predicted value (60%), showing the reliability of this model. By the analysis of SEM, TEM, TPD-MS, XPS and FT-IR, it was found that nano-size sheet structure which contained the functional groups (phenolic hydroxyl, carbonyl and carboxyl) and quinones existed on the surface of sludge derived carbon. The analysis of ICP-OES, EDAX and 57Fe Mössbauer spectroscopy proved the presence of iron with different valences in sludge derived carbon. These findings confirmed that the catalyst could efficiently convert cephalexin into small molecules such as benzoic acid and butyl diketone which were then oxidized completely.
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  • 收稿日期:  2019-05-06

CWPO体系中污泥炭催化降解头孢氨苄废水

    通讯作者: 马磊, E-mail: malei@bipt.edu.cn
  • 1. 太原理工大学环境科学与工程学院, 太原, 030024;
  • 2. 中国辐射防护研究院, 太原, 030024;
  • 3. 山西晋环科源环境资源科技有限公司, 太原, 030024;
  • 4. 北京石油化工学院, 燃料清洁化及高效催化减排技术北京市重点实验室, 北京, 102617
  • 收稿日期:  2019-05-06
基金项目:

山西省重点研发计划（201803D31003）和山西省自然科学基金（201901D211029）资助.

摘要: 通过加入正丁醇以共沸蒸馏法对剩余污泥进行脱水，再对污泥进行干燥、焙烧和改性得到污泥炭催化剂.将污泥炭催化剂用于催化湿式过氧化氢氧化体系，处理头孢氨苄废水.采用响应面法中的中心组合设计实验，考察反应温度、初始pH和过氧化氢投加量对TOC降解率的影响，反应温度和过氧化氢投加量具有显著交互作用.在最佳实验条件下（T=50℃、pH=3.00、H2O2=0.071 mol·L-1），TOC去除率为59%，接近预测的TOC去除率（60%），在95%的置信区间内，说明该模型可靠.SEM、TEM、TPD-MS、XPS和FT-IR等分析结果表明污泥炭表面存在纳米尺寸片状结构，这种结构中存在酚羟基、羰基、羧基等活性官能团和醌类结构，且ICP-OES、EDAX和57Fe穆斯堡尔谱等分析结果表明，污泥炭中含有不同价态的Fe，能有效地催化过氧化氢分解，将头孢氨苄转化为苯甲酸、丁二酮等小分子物质，再进一步完全氧化.

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