欢迎访问过程工程学报, 今天是

过程工程学报 ›› 2018, Vol. 18 ›› Issue (3): 517-521.DOI: 10.12034/j.issn.1009-606X.217417

• 反应与分离 • 上一篇    下一篇

臭氧氧化合成臭葱石除砷

曹俊雅1, 张凯伦1,2, 李媛媛2, 张广积2,3*   

  1. 1. 中国矿业大学(北京)化学与环境工程学院,北京 100083;2. 中国科学院过程工程研究所绿色过程与工程重点实验室,北京 100190; 3. 中国科学院大学化学与化工学院,北京 100149
  • 收稿日期:2017-12-12 修回日期:2018-03-08 出版日期:2018-06-22 发布日期:2018-06-06
  • 通讯作者: 张广积 gjzhang@ipe.ac.cn
  • 基金资助:
    臭氧微气泡氧化三价砷形成臭葱石沉淀除砷方法的研究;新型生物冶金测试反应器及气液固三相流测量仪器研制;中国科学院前沿科学重点研究项目;中国科学院科研装备研制项目

Arsenic Removal by Scorodite Synthesis Using Ozone Oxidation

Junya CAO1, Kailun ZHANG1,2, Yuanyuan LI2, Guangji ZHANG2,3*   

  1. 1. School of Chemistry ? Environmental Engineering, China University of Mining and Technology (Beijing), Beijing 100083, China; 2. Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China; 3. School of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100149, China
  • Received:2017-12-12 Revised:2018-03-08 Online:2018-06-22 Published:2018-06-06
  • Contact: ZHANG Guang-ji gjzhang@ipe.ac.cn

摘要: 用臭氧发生器产生的臭氧氧化模拟酸性含砷废水,在95℃下加热反应7 h合成臭葱石,考察了Fe(II)氧化速率及溶液初始pH值对砷去除率及臭葱石合成的影响. 结果表明,提高Fe(II)氧化速率及增大初始pH值均可促进As沉淀. 初始pH为2.0时通入臭氧,溶液中As的最终去除率可达89.64%,反应所得臭葱石颗粒尺寸较大、结晶良好.

关键词: 臭氧, 氧化, As(Ⅲ), As(Ⅴ), Fe(Ⅱ), 臭葱石

Abstract: The ozone generated by the ozone generator was used to oxidize lab made acidic arsenic-containing wastewater to synthesize scorodite at 95℃ for 7 h. The effects of oxidizing rate of Fe(II) and initial pH of the solution on the arsenic removal rate and the scorodite formation were studied. The results showed that increasing the oxidizing rate of Fe(II) and initial pH can enhanced As precipitation. With the ozone oxidation, 89.64% arsenic was removed from the solution at initial pH=2, and the scorodite has large particle size and good crystallization.

Key words: ozone, oxidation, As (Ⅲ), As (Ⅴ), Fe(Ⅱ), scorodite