化工进展 ›› 2018, Vol. 37 ›› Issue (11): 4265-4272.DOI: 10.16085/j.issn.1000-6613.2017-2681

• 能源加工与技术 • 上一篇    下一篇

Fenton试剂去除木质纤维素典型酸解产物

曹愉酒, 张兴   

  1. 中国矿业大学化工学院, 江苏 徐州 221116
  • 收稿日期:2017-12-28 修回日期:2018-01-18 出版日期:2018-11-05 发布日期:2018-11-05
  • 通讯作者: 张兴,教授,研究方向为环境生物技术。E-mail:kuangdazhang@163.com。
  • 作者简介:曹愉酒(1991-),女,硕士研究生,研究方向为环境生物技术。E-mail:caoyujiu@163.com。

Removal of the typical products from lignocellulose acidolysis using Fenton reagent

CAO Yujiu, ZHANG Xing   

  1. School of Chemical Engineering and Technology, China University of Mining & Technology, Xuzhou 221116, Jiangsu, China
  • Received:2017-12-28 Revised:2018-01-18 Online:2018-11-05 Published:2018-11-05

摘要: 以亚甲基蓝和Fenton试剂为基础体系,考察木质纤维素典型酸解产物夺取羟基自由基的能力。选取香草醛、糠醛和葡萄糖为木质纤维素典型酸解模型化合物,重点考察了H2O2浓度、初始pH及Fe2+浓度等主要因素的影响,并通过高效液相色谱分析确认不同Fenton氧化程度下香草醛和糠醛的去除率。结果表明:香草醛、糠醛、葡萄糖均能与亚甲基蓝竞争羟基自由基,在等物质的量碳的条件下,夺取羟基自由基能力顺序为香草醛 > 糠醛 > 葡萄糖。在pH为3、Fe2+浓度为0.03mmol/L、H2O2浓度为0.12mmol/L条件下,分别加入香草醛和糠醛,去除率分别为67.08%和97.80%。进一步增大H2O2浓度为0.24mmol/L时,分别加入香草醛和糠醛,去除率分别为92.65%和100%;而同时加入香草醛和糠醛,香草醛去除率为82.76%,糠醛去除率为88.98%。该研究对促进生物质能产业发展具有重要现实意义。

关键词: Fenton试剂, 亚甲基蓝, 木质纤维素, 酸解产物, 去除率

Abstract: Based on the basic system of the methylene blue and Fenton reagent, the capability of the typical products from lignocellulose acidolysis to capture hydroxyl radicals (·OH) was investigated. In this paper, the vanillin, furfural and glucose were selected as the typical lignocellulose-related model compounds (LRMCs). The main factors, such as H2O2 concentration, initial pH, and Fe2+ concentration, were investigated, and the removal efficiencies of LRMCs over different Fenton oxidation degrees were obtained by high performance liquid chromatography (HPLC). The results showed that the vanillin, furfural, and glucose all could compete with methylene blue for hydroxyl radicals in the removal of LRMCs. Under the condition of equimolar carbon, the abilities to seize hydroxyl radicals were ranked as vanillin, furfural, and glucose, respectively. At the condition of pH of 3, Fe2+ concentration of 0.03mmol/L, and H2O2 concentration of 0.12mmol/L, the removal rates were 67.08% and 97.80%, when vanillin and furfural were added, respectively. While the concentration of H2O2 was increased to 0.24mmol/L, the removal rates were 92.65% and 100%, respectively. Moreover, when the vanillin and furfural were added simultaneously, the removal rate of vanillin was 82.76%, and that of furfural was 88.98%. The research had an important and practical significance to promote the development of biomass energy industry.

Key words: Fenton reagent, methylene blue, lignocellulose, acidolysis products, removal rate

中图分类号: 

京ICP备12046843号-2;京公网安备 11010102001994号
版权所有 © 《化工进展》编辑部
地址:北京市东城区青年湖南街13号 邮编:100011
电子信箱:hgjz@cip.com.cn
本系统由北京玛格泰克科技发展有限公司设计开发 技术支持:support@magtech.com.cn