Inorganic Chemicals Industry ›› 2021, Vol. 53 ›› Issue (11): 36-41.doi: 10.19964/j.issn.1006-4990.2021-0095

• Reviews and Special Topics • Previous Articles     Next Articles

Research progress of adsorption removal of hydrogen sulfide by smelting waste slag

JIANG Qi(),HE Yongmei,WU Yonglin,JIANG Ming()   

  1. College of Resources and Environment,Yunnan Agricultural University,Kunming 650201,China
  • Received:2021-02-10 Online:2021-11-10 Published:2021-11-15
  • Contact: JIANG Ming E-mail:ray12121@163.com;mingjiang2010@163.com

Abstract:

Hydrogen sulfide(H2S) is a kind of highly toxic pollutant which seriously endangers atmospheric environment and human health.H2S widely exists in nature and many production processes.Dry desulfurization is widely used in the removal of H2S-containing exhaust gas due to its advantages such as easy operation,strong stability and high desulfurization efficiency.Adsorption is the most common method of dry desulfurization.However,the adsorbent is consumed in large quantities during the adsorbing process,which restricts the desulfurization effect and increases the cost.Smelting waste slag is a potential desulfurizer,which has the characteristics of wide sources,large quantity and excellent surface physicochemical properties.The research progress of H2S removal by different adsorbents of smelting waste slags was summarized,its advantages and disadvantages were analyzed,and factors of affecting adsorption and regeneration of adsorbent were discussed.Finally,in view of the existing problems such as single research scheme and few modification methods of adsorbent,future research directions were proposed,including setting up multi-component dynamic breakthrough adsorption test and exploring a variety of modification methods.

Key words: hydrogen sulfide, adsorbent, regeneration, smelting waste slag

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