Carvajal P, Dinamarca M Alejandro, Baeza P, Camú E, Ojeda J
Laboratorio de Biotecnología Microbiana, Escuela de Nutrición, Facultad de Farmacia, Universidad de Valparaíso, Casilla 5001, Valparaíso, Chile.
Centro de MicroBioinnovación, Universidad de Valparaíso, Casilla 5001, Valparaíso, Chile.
Biotechnol Lett. 2017 Feb;39(2):241-245. doi: 10.1007/s10529-016-2240-y. Epub 2016 Oct 20.
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.
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.
Biodesulfurization is effective for removing the sulfur-containing organic molecules adsorbed on inorganic materials and avoids the generation of gaseous pollutants.
利用红平红球菌通过生物脱硫（BDS）去除吸附在氧化铝、二氧化硅和海泡石上的二苯并噻吩（DBT）和4,6-二甲基二苯并噻吩（4,6-DMDBT），该方法能选择性地还原硫分子且不产生气态污染物。
DBT和4,6-DMDBT的吸附受载体性质影响，包括粒径和表面酸性基团的存在。两种含硫有机分子的最高吸附量使用的粒径为0.43 - 0.063毫米。去除率最高的是海泡石（DBT为80%，4,6-DMDBT为56%）和二氧化硅（DBT为71%，4,6-DMDBT为37%）。这归因于这些载体与细菌之间的紧密相互作用。
生物脱硫对于去除吸附在无机材料上的含硫有机分子有效，且避免产生气态污染物。
