title: Removal of sulfur-containing organic molecules adsorbed on inorganic supports by Rhodococcus Rhodochrous spp.
abstract: OBJECTIVE
  To remove dibenzothiophene (DBT) and 4,6-dimethyl-dibenzothiophene (4,6-DMDBT) adsorbed on alumina, silica and sepiolite through biodesulfurization (BDS) using Rhodococcus Rhodochrous spp., that selectively reduce sulfur molecules without generating of gaseous pollutants.
  
  
  RESULTS
  The adsorption of DBT and 4,6-DMDBT was affected by the properties of the supports, including particle size and the presence of surface acidic groups. The highest adsorption of both sulfur-containing organic molecules used particle sizes of 0.43-0.063 mm. The highest percentage removal was with sepiolite (80 % for DBT and 56 % for 4,6-DMDBT) and silica (71 % for DBT and 37 % for 4,6-DMDBT). This is attributed to the close interaction between these supports and the bacteria.
  
  
  CONCLUSIONS
  Biodesulfurization is effective for removing the sulfur-containing organic molecules adsorbed on inorganic materials and avoids the generation of gaseous pollutants.
authors.affiliation: Laboratorio de Biotecnología Microbiana, Escuela de Nutrición, Facultad de Farmacia, Universidad de Valparaíso, Casilla 5001, Valparaíso, Chile.
authors.forename: P
authors.initials: P
authors.lastname: Carvajal
authors.affiliation: Centro de MicroBioinnovación, Universidad de Valparaíso, Casilla 5001, Valparaíso, Chile.
authors.forename: M Alejandro
authors.initials: MA
authors.lastname: Dinamarca
authors.affiliation: Instituto de Química, Facultad de Ciencias, Pontificia Universidad Católica de Valparaíso, Casilla 4059, Valparaíso, Chile.
authors.forename: P
authors.initials: P
authors.lastname: Baeza
authors.affiliation: Instituto de Química, Facultad de Ciencias, Pontificia Universidad Católica de Valparaíso, Casilla 4059, Valparaíso, Chile.
authors.forename: E
authors.initials: E
authors.lastname: Camú
authors.affiliation: Centro de MicroBioinnovación, Universidad de Valparaíso, Casilla 5001, Valparaíso, Chile. juan.ojeda@uv.cl.
authors.forename: J
authors.identifier: http://orcid.org/0000-0002-9484-5017
authors.initials: J
authors.lastname: Ojeda
mesh_terms: D000327:Adsorption; D000537:Aluminum Oxide / Q000737:chemistry; D001673:Biodegradation, Environmental; D017633:Magnesium Silicates / Q000737:chemistry; D012240:Rhodococcus / Q000378:metabolism*; D012822:Silicon Dioxide / Q000737:chemistry; D013455:Sulfur / Q000737:chemistry / Q000378:metabolism*; D013876:Thiophenes / Q000737:chemistry / Q000378:metabolism
chemical_list: C414426:4,6-dimethyldibenzothiophene; D017633:Magnesium Silicates; D013876:Thiophenes; D013455:Sulfur; D012822:Silicon Dioxide; C001671:magnesium trisilicate; D000537:Aluminum Oxide; C016366:dibenzothiophene
keywords: Adsorption; Biodesulfurization; Inorganic supports; Rhodococcus rhodochrous; Sulfur-containing organic molecules