无机盐工业
主管:中海油天津化工研究设计院有限公司
主办:中海油天津化工研究设计院有限公司
   中海油炼油化工科学研究院(北京)有限公司
   中国化工学会无机酸碱盐专业委员会
ISSN 1006-4990 CN 12-1069/TQ

无机盐工业 ›› 2022, Vol. 54 ›› Issue (11): 96-103.doi: 10.19964/j.issn.1006-4990.2022-0058

• 环境·健康·安全 • 上一篇    下一篇

餐厨垃圾溶剂热法制备负载铁生物质炭

李亚林1(),黄羽2,李东傲1,随曌一1,何海洋1,刘浩钊1   

  1. 1.河南工程学院环境与生物工程学院,河南 郑州 451191
    2.湖北工业大学土木建筑与环境学院
  • 收稿日期:2022-02-11 出版日期:2022-11-10 发布日期:2022-11-23
  • 作者简介:李亚林(1984— ),男,博士,副教授,硕士生导师,研究方向为固体废物处理与资源化;E-mail:li_ya_lin@haue.edu.cn
  • 基金资助:
    教育部中西部高等学校青年骨干教师国内访问学者项目(19042);河南省科技攻关项目(212102310064);教育部国家级大学生创新创业训练计划项目(202111517002)

Preparation of Fe-impregnated biochar from food waste by solvothermal method

LI Yalin1(),HUANG Yu2,Li Dongao1,SUI Zhaoyi1,HE Haiyang1,LIU Haozhao1   

  1. 1. College of Environmental and Biological Engineering, Henan University of Engineering, Zhengzhou 451191, China
    2. School of Civil Engineering, Architecture and Environment, Hubei University of Technology
  • Received:2022-02-11 Published:2022-11-10 Online:2022-11-23

摘要:

以餐厨垃圾为原料运用溶剂热法制备了负载铁的球状生物质炭,系统研究了pH、醋酸锌(C4H6O4Zn·2H2O)与六水合三氯化铁(FeCl3·6H2O)投料质量比、碳化温度、碳化时间等条件对生物质炭制备的影响。在此基础上利用响应曲面法对生物质炭的制备条件进行了优化,分析了不同因素之间的交互作用。结果表明,在pH为2.26、C4H6O4Zn·2H2O与FeCl3·6H2O的质量比为0.51、碳化温度为203.96 ℃、碳化时间为2.92 h时,生物质炭的实际得炭率达到最大为56.82%,回归模型在研究区域内的水平显著,且预测的准确性较高。生物质炭的物相和形貌表征证明了四氧化三铁(Fe3O4)负载在球状生物质炭的表面,生物质炭的比表面积可以达到52 m2/g,负载Fe3O4相较于未负载Fe3O4的生物质炭对铜离子具有更好的吸附性,且吸附过程可以使用准二级动力学方程进行描述。

关键词: 餐厨垃圾, 生物质炭, 表面修饰, 溶剂热法, 响应曲面法

Abstract:

Fe-impregnated spherical biochar was prepared from food waste as raw materials by solvothermal method.The effects of pH,feed mass ratio of C4H6O4Zn·2H2O and FeCl3·6H2O,carbonization temperature and carbonization time on the preparation of biochar were systematically studied.On this basis,the preparation conditions of biochar were optimized by response surface method,and the interaction between different factors was analyzed.When the pH was 2.26,the mass ratio of C4H6O4Zn·2H2O and FeCl3·6H2O was 0.51,the carbonization temperature was 203.96 ℃,and the carbonization time was 2.92 h,the actual carbon yield of biomass carbon was 56.82%.The regression model could reach a significant level,and the fitting was good in the experimental study area.The phase and morphology characterization of biochar proved that Fe3O4 was loaded on the surface of spherical biochar,and the specific surface area of biochar could reach 52 m2/g.The biochar loaded with Fe3O4 had better adsorption capacity for copper ions than biochar loaded without Fe3O4,and the adsorption process could be described by quasi-second-order kinetic equation.

Key words: food waste, biochar, surface modification, solvothermal method, response surface method

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