Open AccessKinetics of Sulfur Oxidation at Suboptimal Temperatures
Author(s) -
Lasse Ahonen,
Olli H. Tuovinen
Publication year - 1990
Publication title -
applied and environmental microbiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.552
H-Index - 324
eISSN - 1070-6291
pISSN - 0099-2240
DOI - 10.1128/aem.56.2.560-562.1990
Subject(s) - sulfur , arrhenius plot , arrhenius equation , chemistry , activation energy , kinetics , thiobacillus , reaction rate constant , thiobacillus ferrooxidans , bacteria , substrate (aquarium) , atmospheric temperature range , incubation , analytical chemistry (journal) , nuclear chemistry , inorganic chemistry , environmental chemistry , thermodynamics , organic chemistry , biochemistry , biology , ecology , quantum mechanics , physics , genetics
Chemolithoautotrophic bacteria were enriched from mine water at incubation temperatures ranging from 4 to 46 degrees C, using elemental sulfur as a substrate in acid mineral salts media. Thiobacillus-type bacteria were successfully enriched for at all test temperatures except 46 degrees C. Changes in pH (-dpH/dt) were used to estimate the rate constants for the enrichment cultures. The rate constants yielded a linear Arrhenius plot, an activation energy of 65 kJ/mol, and a temperature coefficient (Q(10)) of 2.1 for the 4 to 37 degrees C temperature interval.
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