Biodesulfurization of Dibenzothiophene by Microbial Cells Coated with Magnetite Nanoparticles

Shan, Guobin; Xing, Jianmin; Zhang, Huaiying; Liu, Huizhou

doi:10.1128/aem.71.8.4497-4502.2005

Cited by 179 publications

(92 citation statements)

References 15 publications

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“…Moreover, the higher activity of nanoparticles is usually referred to as their unique properties and high available active specific surface areas. Generally, nanoparticle catalysts increase the microbiological reaction rates by locating them in the cells to stimulate the activity of microbes [78]. As indicated by Hulkoti and Taranath [79], fungi are also considered an excellent candidates for the synthesis of metal and metal sulfide nanoparticles due to the presence of a variety of enzymes in their cells and the simple handling.…”

Section: Application Of Nanoparticlesmentioning

confidence: 99%

The ways to increase efficiency of soil bioremediation

Wołejko

Wydro

Loboda

2016

Ecological Chemistry and Engineering S

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Abstract:The aim of this paper was to present possibilities of using different substrates to assist the bioremediation of soils contaminated with heavy metals, pesticides and other substances. Today's bioengineering offers many solutions that enable the effective conduct of biological remediation, including both biostimulation and bioaugmentation. For this purpose, they are used to enrich various organic substances, sorbents, microbiological and enzymatic preparations, chemical substances of natural origin or nanoparticles. The use of genetic engineering as a tool to obtain microorganisms and plants capable of efficient degradation of pollutants may cause the risks that entails the introduction of transgenic plants and microorganisms into the environment. In order to determine the efficacy and possible effects of the various bioremediation techniques, it is required to conduct many studies and projects on a larger scale than only in the laboratory. Furthermore, it should be emphasized that bioremediation involves interdisciplinary issues and therefore, there is a need to combine knowledge from different disciplines, such as: microbiology, biochemistry, ecology, environmental engineering and process engineering.

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Section: Application Of Nanoparticlesmentioning

confidence: 99%

The ways to increase efficiency of soil bioremediation

Wołejko

Wydro

Loboda

2016

Ecological Chemistry and Engineering S

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“…For cultivation of the strain, 250 cm 3 flasks containing 50 cm 3 of medium supplemented with 0.25 mM thiophene were incubated at 37°C with shaking at 200 rpm for 96 h (IKA KS130 basic). During the course of cultivation, aliquots of the culture were collected for measurements of cell growth by turbidimetric assay at 600 nm [27]. The resting cells were prepared by harvesting the cells in mid-logarithmic phase (OD 600 = 1) by centrifugation at 4000 g for 30 min (Froilabo SW14) and washing twice with 0.1 M potassium phosphate buffer [36].…”

Section: Microorganism and Cell Immobilizationmentioning

confidence: 99%

“…Resting cells were suspended in 50 cm 3 of potassium phosphate buffer (0.1 M, pH = 7). For the immobilization process the bacteria cell numbers were adjusted by measuring the turbidity at 600 nm (OD 600 ) with a UV-Visible spectrophotometer (Spectro scan 60 DV) [27]. Suspended bacterial cells were contacted with polymer support (1 : 1) at 37°C in rotary shaker at 200 rpm during 72 h [37].…”

Section: Microorganism and Cell Immobilizationmentioning

confidence: 99%

“…Biomodification of chemical supports using cells immobilization via adsorption increases the interaction between reactants present in two-phase systems [26][27][28]. These materials must be inert to biological attack, insoluble in the growth media and non-toxic to microbial cells, hence polymeric supports are proper choices, sorption capacity, chemical resistance and mechanical strength of polymer support and solubility parameter is the main factor in the selection of a polymer support [29][30][31].…”

Section: Introductionmentioning

confidence: 99%

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Biodesulphurization of thiophene as a sulphur model compound in crude oils by Pseudomonas aeruginosa supported on polyethylene

Karimi

Sadeghi

Salimi

2017

Ecological Chemistry and Engineering S

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Abstract:A new biodesulphurization method has been considered using Pseudomonas aeruginosa supported on polyethylene (PE) for biodesulphurization (BDS) of thiophene as an aromatic sulphur model compound of crude oils. Also the biodegradation of thiophene has been modified in the presence of potassium hexacyanoferrate(III) as a terminal electron acceptor to approach the maximum biodesulphurization efficiency. The obtaining results according to UV-Spectrophotometry at 240 nm, 83.3% of thiophene at the primary concentration of 50 mg/dm 3 , pH = 7, by 0.5 g of biocatalyst in 37°C after 4 h of contact time has been removed. The bacterial cells exhibited a greater and faster biodegradation in the presence of potassium hexacyanoferrate(III) and 94.8% of thiophene has been removed after 3 h of contact time. Kinetic study predicted chemisorption of thiophene on the surface of the biocatalyst, as it followed the pseudo-second-order rate equation. Morphology and surface functional groups of the biocatalyst have been investigated by SEM and FT-IR, respectively.

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“…In recent decade some researches have been performed in studying the effect of Fe 3 O 4 nanoparticles coated on bacteria cell wall as a magnetic factor to give a better gathering and separation to the organisms during BDS [13][14][15][16][17]. In some studies also the effect of ZnO and CuO nanoparticles on desulfurization in different conditions such as acidic or as coated on graphene and active carbon has been investigated in which considerable results have been demonstrated [18,19].…”

Section: Introductionmentioning

confidence: 99%