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Biotechnological H 2 S gas treatment with Thiobacillus ferrooxidans
Author(s) -
Pagella Claudio,
Perego Patrizia,
Zilli Mario
Publication year - 1996
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.270190113
Subject(s) - thiobacillus ferrooxidans , absorption (acoustics) , chemistry , ferric , hydrogen sulphide , process (computing) , thiobacillus , hydrogen , biochemical engineering , chemical engineering , materials science , inorganic chemistry , organic chemistry , engineering , ferrous , computer science , sulfur , composite material , operating system
In this paper a novel process for biotechnological abatement of hydrogen sulphide is presented which details the fundamentals of chemical and biological phenomena involved. The process is based on the combination of two steps to form a closed cycle which has special enviornmental advantages. The chemical step corresponds to the abatement reaction itself with absorption of the gas in a ferric solution. The biological step is related to the regeneration of the absorbing solution by means of specific bacterial strains. Particular interest is devoted to the biological kinetics of the regeneration stage, where several inhibition phenomena appear, and are also related to parameters such as temperature and pH. Results of experimental runs of gas absorption in a laboratory scale plant are also described.