The thing about biodesulfurization is … it’s not cost effective. That is the issue addressed by this thesis, which is why it may be useful.
Sulfur-selective biodesulfurization of organosulfur compounds in model oils and distillate fractions
Thesis
Jantana Tangaromsuk
Mahidol University (2007)
“Biodesulfurization is an attractive method considered to be an alternative or complementary to hydrodesulfurization, helping refiners to cost-effectively meet new sulfur regulations. Over past decades, this technology has been investigated aggressively, but it has not yet been successfully commercialized. One problem is the cost of biocatalysts. To reduce the cost, microorganisms with sufficiently high activity and wide substrate specificity should be developed. The aims of this study were to isolate and select the desulfurizing microorganisms with high activity and broad substrate specificity, and to investigate mass production biocatalysts with high activity, which has the potential to reduce overall biocatalyst cost.
“In this study, bacteria, which could utilize organosulfur compounds as a sulfur source, were isolated from oil sludge and soil samples. DBT desulfurization activities of isolated strains were conducted. The strains with high activity were selected and identified by 16s rRNA sequencing. These strains were further studied for their substrate specificity by investigating the growth of the bacteria on various organosulfur compounds (i.e., BT, DBT, 3,4-benzoDBT, 4,6-DMDBT, methyl phenyl sulfide, phenyl sulfide and phenyl disulfide.) Biodesulfurization of these substrates by growing and resting cells of the bacteria was also conducted. In addition, biodesulfurization of crude oil and hydrodesulfurized diesel oil by the selected strain was also investigated.”
View the full text of the thesis at …
http://mulinet8.li.mahidol.ac.th/e-thesis/4536829.pdf
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