Chemical absorption of H2S for biogas purification

Brazilian Journal of Chemical Engineering

M.s. Horikawa²  F. Rossi²  M.l. Gimenes²  C.m.m. Costa¹  M.g.c. Da Silva¹ 

[1] ,Universidade Estadual de Maringá Departamento de Engenharia Química Maringá PR ,Brazil

关键词: biogas purification;    H2S removal;    Fe/EDTA catalyst;   

DOI  :  10.1590/S0104-66322004000300006

来源: SciELO

【 摘 要 】

This work presents an experimental study of purification of a biogas by removal of its hydrogen sulphide (H2S) content. The H2S was removed by means of chemical absorption in an iron-chelated solution catalyzed by Fe/EDTA, which converts H2S into elemental sulphur (S). Preparation of the catalyst solution and the results of biogas component absorption in the catalyst solution (0.2 mol/L) are presented. These results are compared with those for physical absorption into pure water under similar conditions. Experimental results demonstrate that, under the same experimental conditions, a higher percentage of H2S can be removed in the catalytic solution than in water. In a continuous counter current using adequate flow-rate phases contact at room temperature and low gas pressure, the results demonstrate that is possible to totally remove the H2S from the biogas with the prepared catalytic solution.

【 授权许可】

CC BY   
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