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Biocatalytic Desulfurization of Diesel Oil in an Air‐Lift Reactor with Immobilized Gordonia nitida CYKS1 Cells
Author(s) -
Lee In Su,
Bae HeeSung,
Ryu Hee Wook,
Cho KyungSuk,
Chang Yong Keun
Publication year - 2008
Publication title -
biotechnology progress
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.572
H-Index - 129
eISSN - 1520-6033
pISSN - 8756-7938
DOI - 10.1021/bp0496171
Subject(s) - flue gas desulfurization , diesel fuel , sulfur , chemistry , sucrose , vegetable oil refining , organic chemistry , catalysis , biodiesel
Abstract A new type of air‐lift reactor with immobilized Gordonia nitida CYKS1 cells on a fibrous support was designed and used for the biocatalytic desulfurization (BDS) of diesel oil. Its performance was evaluated at different phase ratios of the oil to the aqueous medium (or oil phase fractions) and different sucrose concentrations. When the reaction mixture contained 10% diesel oil (v/v), 61–67% of sulfur was removed as the sulfur content decreased from 202–250 to 76–90 mg L −1 in 72 h. The sulfur content did not decrease any further because the remaining sulfur compounds were recalcitrant to BDS. During the desulfurization, the strain CYKS1 consumed hydrocarbons in the diesel oil, mainly n ‐alkanes with 10–26 carbons, as carbon source even though an easily available carbon source, sucrose, was supplied.