title: Biodesulfurization of dibenzothiophene and gas oil using a bioreactor containing a catalytic bed with Rhodococcus rhodochrous immobilized on silica.
abstract: Biodesulfurization (BDS) in a bioreactor packed with a catalytic bed of silica containing immobilized Rhodococcus rhodochrous was studied. Various bed lengths and support particle sizes were evaluated for BDS of dibenzothiophene (DBT) and gas oil. The sulfur-containing substrates were introduced separately into the bioreactor at different feed flows. Higher removal of sulfur from DBT and gas oil was achieved with a long bed, lower substrate flow, and larger sizes of immobilization particles. The packed bed bioreactor containing metabolic active cells was recycled and maintained BDS activity.
authors.affiliation: Laboratorio de Biotecnología Microbiana, Escuela de Nutrición, Facultad de Farmacia, Universidad de Valparaíso, Casilla 5001, Valparaíso, Chile.
authors.forename: M
authors.initials: M
authors.lastname: Alejandro Dinamarca
authors.forename: L
authors.initials: L
authors.lastname: Orellana
authors.forename: J
authors.initials: J
authors.lastname: Aguirre
authors.forename: P
authors.initials: P
authors.lastname: Baeza
authors.forename: G
authors.initials: G
authors.lastname: Espinoza
authors.forename: C
authors.initials: C
authors.lastname: Canales
authors.forename: J
authors.initials: J
authors.lastname: Ojeda
mesh_terms: D055162:Biocatalysis / Q000187:drug effects; D001673:Biodegradation, Environmental / Q000187:drug effects; D019149:Bioreactors / Q000382:microbiology*; D018914:Cells, Immobilized / Q000166:cytology / Q000187:drug effects; D005740:Gases / Q000302:isolation & purification*; D009821:Oils / Q000302:isolation & purification*; D010316:Particle Size; D059027:Recycling; D012240:Rhodococcus / Q000166:cytology / Q000187:drug effects / Q000378:metabolism*; D012822:Silicon Dioxide / Q000494:pharmacology*; D013455:Sulfur / Q000302:isolation & purification*; D013876:Thiophenes / Q000302:isolation & purification*; D013997:Time Factors
chemical_list: D005740:Gases; D009821:Oils; D013876:Thiophenes; D013455:Sulfur; D012822:Silicon Dioxide; C016366:dibenzothiophene