Biodesulfurization of dibenzothiophene by immobilized cells of pseudomonas stutzeriup-1

摘要

In order to mitigate acid rain and air pollution caused by sulfur dioxide released from the combustion of oils,more and more regulations on sulfur content in petroleum are being implemented.The current industrial method for removal of sulfur from fuels is hydrodesulfurization (HDS),which requires high temperature and high pressure.HDS is costly and energy-intensive for deep desulfurization.Furthermore,HDS is not effective for removing heterocyclic sulfur compounds such as dibenzothiophene (DBT) and DBT derivatives.Thus BDS,which operates under ambient temperature and pressure,is expected to be a complement and a promising alternative to HDS.