Effects of pH on the simultaneous removal of hydrogen sulfide and ammonia in a combined absorption and electro-oxidation system
作者: Jeong-Hee KangYeojoon YoonJiHyeon Song
作者单位: 1Department of Civil & Environmental Engineering, Sejong University, Seoul, Republic of Korea
2Department of Land, Water and Environment Research, Korea Institute of Civil Engineering and Building Technology, Gyeonggi-Do, Republic of Korea
3Department of Environmental Engineering, Yonsei University, Wonju, Republic of Korea
刊名: Journal of Hazardous Materials, 2020, Vol.382
来源数据库: Elsevier Journal
DOI: 10.1016/j.jhazmat.2019.121011
关键词: Hydrogen sulfideAmmoniaAbsorptionElectro-oxidationPH effect
原始语种摘要: Abstract(#br)Biogas commonly contains both H 2 S and NH 3 , and these impurities need to be removed before use. In this study, a combined system consisting of an absorption column and an electro-oxidation reactor was developed to simultaneously treat H 2 S and NH 3 . In particular, the effect of the pH (6, 8, and 10) on the system performance was investigated. The mass transfer rate of H 2 S from the gas to liquid phases was sensitive to pH because of its relatively low solubility at low pHs, while more than 99% of the introduced NH 3 was steadily absorbed. Therefore, a pH higher than 8 was favorable for the simultaneous removal of both gases. In the electro-oxidation reactor, H 2 S was primarily oxidized, while the NH 3 oxidation started after H 2 S was completely eliminated....
全文获取路径: Elsevier  (合作)
影响因子:3.925 (2012)

  • oxidation 氧化
  • removal 消去
  • simultaneous 同时的
  • ammonia 
  • reactor 反应器
  • Ammonia 
  • combined 组合
  • system 
  • values 价值观
  • absorption 吸收