The biotechnological gas desulfurization process under haloalkaline conditions is widely applied for removal of toxic H2S from sour streams. In this biologically oxidized into elemental sulfur. Recently, the has been extended with an anaerobic step (dual-reactor line-up), increasing selectivity sulfur (S8) ~85–97% and decreasing formation (thio)sulfate. It was also found that biological sulfide...

The presence of elevated levels sulfur in diesel oil results an increased content the process stream, which poses significant risks to human health, animals, environment, vehicles, and infrastructure. Sulfur is a major contributor particulate matter (PM) total PM emissions. level pollutants emitted correlated fuel. Consequently, regulations regarding crude products, particularly oil, have becom...

The combustion of sulfur-rich fossil fuels leads to the release of acid rain-causing sulfur dioxide into the environment. The aim of this study was to enhance the efficiency of biodesulfurization using Pseudomonas aeruginosa through the duplication of the dsz cluster in this organism. One copy of the dsz cluster was inserted by a tri-parental mating method into the chromosome of Pseudomonas aer...

In previous work from our laboratories a synthetic gene encoding a peptide ("Sulpeptide 1" or "S1") with a high proportion of methionine and cysteine residues had been designed to act as a sulfur sink and was inserted into the dsz (desulfurization) operon of Rhodococcus erythropolis IGTS8. In the work described here this construct (dszAS1BC) and the intact dsz operon (dszABC) cloned into vector...

microbiological analyses of soil chronically exposed to petroleum complex compounds of some oil springs in south of iran resulted in isolation and purification of a new native thermophilic strain which is capable to desulfurize petroleum sulfur compounds by 4-s mechanism. dibenzothiophene (dbt) was selected as a complex sulfur compound model and many experiments were done to identify the metabo...

Several organosulfur compounds are present in the crude oil, and are required to be removed before its processing into transport fuel. For this reason, biodesulfurization of thiophenic compounds has been studied extensively. However, studies on the sulfide compounds are scarce. In this paper, we describe desulfurization of a model sulfidic compound, dibenzyl sulfide (DBS) by an isolated Gordoni...