Enhanced biodesulfurization by magnetic immobilized Rhodococcus erythropolis LSSE8-1-vgb assembled with nano-γ-Al2O3

Zhang, Ting; Li, Wangliang; Chen, Xiaoxin; Tang, Huang; Li, Qiang; Jian-wei, Xing; Liu, Huizhou

doi:10.1007/s11274-010-0459-7

Cited by 26 publications

(12 citation statements)

References 24 publications

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“…The sulfur atom is oxidized into sulfite and sulfate, which will be released to the aqueous phase (Kilbane 2006). Many studies have used DBT-degrading microorganisms to investigate the BDS capability of crude oil, gasoline and biodiesel (Oldfield et al 1997;Zhang et al 2011;Wang et al 2011). It was reported that 26-71 % of sulfur could be removed biologically from different petroleum oils, with the highest removal efficiency of sulfur from light crude oil (Bhatia and Sharma 2010).…”

Section: Introductionmentioning

confidence: 99%

Enhancement of bunker oil biodesulfurization by adding surfactant

Jiang

2012

World J Microbiol Biotechnol

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Biodesulfurization (BDS) is a promising method to remove sulfur compounds from diesel and gasoline. However, the information on BDS of heavy oil is scanty, which might be due to their "undesirable" physical properties and more complicated sulfur diversities. In this study, the BDS of one kind of heavy oil, bunker oil MFO380 was investigated. The biocatalyst was obtained by the enrichment with oil sludge as the seed and using dibenzothiophene (DBT) as the sole sulfur source. The enriched biocatalyst (microbial mixed culture) could selectively remove sulfur from DBT and DBT was transformed into 2-hydroxybiphenyl, which indicates that the BDS process is beneficial to non-destructive carbon bonds and thus can maintain the calorific value. The bunker oil BDS results showed that after 7 days of incubation, the removal efficiency of sulfur in MFO380 was only 2.88 %, but this could be significantly improved by adding surfactants Triton X-100 or Tween 20. This effect could be attributed to greatly reduced viscosity of heavy oil and increased mass transfer of sulfur compounds in heavy oil into water. Adding Triton X-100 achieved the highest removal efficiency of sulfur, up to 51.7 % after 7 days of incubation. The optimal amount of Triton X-100 was 0.5 g/50 ml medium. When toluene was added as an organic solvent for MFO380, the BDS activity was improved, while lower than the effect of adding surfactants.

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Section: Introductionmentioning

confidence: 99%

Enhancement of bunker oil biodesulfurization by adding surfactant

Jiang

2012

World J Microbiol Biotechnol

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“…For example, Fe 3 O 4 NPs coated mesoporous alumino-silicate minerals were used for ultra-deep desulfurization forhydro treated diesel [25], and nano-c-Al 2 O 3 coated by Fe 3 O 4 NPs enhanced biodesulfurization by Rhodococcus erythropolis assembly [26]. In this report, as shown in Fig.…”

Section: Morphological Study Of Magnetic Nanoparticlesmentioning

confidence: 79%

Cell-nanoparticle assembly fabricated for CO2 capture and in situ carbon conversion

Zhang

et al. 2016

Journal of CO2 Utilization

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“…In order to recycle and reuse the biocatalysts, immobilized whole-cell biocatalysts are preferred as in this form they could be recycled for reuse, thereby avoiding the need to purify intracellular enzymes and reducing process costs [22,[29][30][31]. Entrapment seemed to be a [29,32].…”

Section: Biotransformation With Immobilized Biocatalystsmentioning

confidence: 99%

Biotransformation of 1,3-Propanediol Cyclic Sulfate and Its Derivatives to Diols by Toluene-Permeabilized Cells of Bacillus sp. CCZU11-1

Liu

Zhang

et al. 2014

Appl Biochem Biotechnol

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In this study, it was the first report that Bacillus sp. CCZU11-1 was used for the biotransformation of 1,3-propanediol cyclic sulfate (1,3-PDS) and its derivatives. The catalytic performance of Bacillus sp. sulfatase in the biotransformation of 1,3-PDS was significantly improved by biocatalyst permeabilization and immobilization. Using cell permeabilization, the hydrolytic activity of the whole-cell biocatalyst was increased by 3.5-fold after 1.5 h of pretreatment with 10 % (v/v) toluene at 30 °C and pH 7.0. Biotransformation of 20 mM 1,3-PDS for 24 h, 1,3-propanediol (1,3-PD) could be obtained in the yield of 97.4 % under the optimized reaction condition. Additionally, the immobilized biocatalysts, permeabilized cells entrapped in calcium alginate, and cross-linked enzyme aggregates were further employed to biotansform 1,3-PDS. Moreover, the total operational time of the immobilized biocatalysts could reach above 240 h with high conversion rate (>90 %).

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Enhanced biodesulfurization by magnetic immobilized Rhodococcus erythropolis LSSE8-1-vgb assembled with nano-γ-Al2O3

Cited by 26 publications

References 24 publications

Enhancement of bunker oil biodesulfurization by adding surfactant

Enhancement of bunker oil biodesulfurization by adding surfactant

Cell-nanoparticle assembly fabricated for CO2 capture and in situ carbon conversion

Biotransformation of 1,3-Propanediol Cyclic Sulfate and Its Derivatives to Diols by Toluene-Permeabilized Cells of Bacillus sp. CCZU11-1

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