Biodegradation of kerosene: Study of growth optimization and metabolic fate of P. janthinellum SDX7

Khan, Shamiyan R.; Nirmal, J.I. Kumar; Kumar, Rita N.; Patel, Jignasha

doi:10.1590/s1517-838246220140112

Cited by 14 publications

(9 citation statements)

References 27 publications

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“…Besides the culture medium, the amount of pollutants in the submerged fermentation is another vital factor that affects the pollutant removal efficiency through impacting microbial metabolic activity and growth 24 . The greater gentamicin removal efficiency (by AMQD4) was achieved at the lower initial concentrations of gentamicin (50–100 mg L −1 ) in this study, implying that microbial activity could be inhibited by higher concentrations of gentamicin, similar to the report on the biodegradation of oxytetracycline by Pleurotusostreatus mycelium 5 .…”

Section: Discussionmentioning

confidence: 99%

Biodegradation of gentamicin by bacterial consortia AMQD4 in synthetic medium and raw gentamicin sewage

Liu

Chen

et al. 2017

Sci Rep

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Gentamicin, a broad spectrum antibiotic of the aminoglycoside class, is widely used for disease prevention of human beings as well as animals. Nowadays the environmental issue caused by the disposal of wastes containing gentamicin attracts increasing attention. In this study, a gentamicin degrading bacterial consortia named AMQD4, including Providencia vermicola, Brevundimonas diminuta, Alcaligenes sp. and Acinetobacter, was isolated from biosolids produced during gentamicin production for the removal of gentamicin in the environment. The component and structure of gentamicin have a great influence on its degradation and gentamicin C1a and gentamicin C2a were more prone to being degraded. AMQD4 could maintain relatively high gentamicin removal efficiency under a wide range of pH, especially in an alkaline condition. In addition, AMQD4 could remove 56.8% and 47.7% of gentamicin in unsterilized and sterilized sewage in a lab-scale experiment, respectively. And among the isolates in AMQD4, Brevundimonas diminuta BZC3 performed the highest gentamicin degradation about 50%. It was speculated that aac3iia was the gentamicin degradation gene and the main degradation product was 3′-acetylgentamicin. Our results suggest that AMQD4 and Brevundimonas diminuta BZC3 could be important candidates to the list of superior microbes for bioremediation of antibiotic pollution.

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Section: Discussionmentioning

confidence: 99%

Biodegradation of gentamicin by bacterial consortia AMQD4 in synthetic medium and raw gentamicin sewage

Liu

Chen

et al. 2017

Sci Rep

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“…The mixing quality at high agitation speed, more than 100 rpm proved to give negative effect on the diffusion rate of nutrients and carbazole into the matrix of gellan gum gel. The trend will be similar if tested with the free cell where the cells would not have high efficiency in nutrient and carbazole absorption [10].…”

Section: The Performance Of Biodegradation In Bioreactor Scale With Various Speed Of Agitation By Immobilized Cellsmentioning

confidence: 84%

Kinetic study of carbazole degradation by free and immobilized Thalassospira profundimaris

Othman

Inayatullah²

2021

Sustainable Engineering and Innovation

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Carbazole, polycyclic aromatic hydrocarbon (PAH), is a hazardous compound and a pollutant that can mainly be found in the petroleum industry. This pollutant can be treated in many ways and one of it is known as bioremediation. A method of using degrading-cell-organism, Thalassospira profundimaris, that is able to consume the pollutant as its food source and produce metabolite, harmless substance in exchange, splits into two ways which are using the cell as free cell and the other is using it as immobilized cell. There are many factors that are affecting the performance of the cell degradation. In this study, initial concentration of carbazole and agitation speed parameters have been tested and kinetic models built based on the results of this study. This study found that in term of initial concentration of carbazole, the performance of degradation cell is better on immobilized cell but not so significant based on kinetic models built. However, addition of good mixing quality enhanced the degradation performance significantly when the agitation speed is in range of 100 revolution per minute (rpm) and below.

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“…Kerosene is one of the most widely used crude oil products in our society today [3]. In many developing countries, kerosene is an important source of energy for cooking and lighting.…”

Section: Introductionmentioning

confidence: 99%

“…World total kerosene consumption for all purposes is equivalent to about 1.2 million barrels per day [7]. However, due to its regular and increased use in many homes today, a considerable amount is released to the environment [3,8]. In Nigeria, petroleum products are mostly transported by land and this has increased the risk of spillage due to bad road networks.…”

Section: Introductionmentioning

confidence: 99%

Effect of Soil Type on the Fate of Kerosene Compounds in the Presence of Water and Ethanol

2016

J Environ Stud

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The effect of soil type on the fate of kerosene compounds in the presence of water and ethanol was studied. Mini lysimeter experiments were conducted to compare the transport and sorption of kerosene compounds in different soil types, namely sand, silt and clay. The soils were artificially contaminated with 7% (w/w) kerosene in the absence and presence of ethanol. Rainfall simulation was performed until zero concentration of kerosene compounds was observed in the effluent. The results obtained showed significant variations in the transport and sorption of kerosene compounds in the different soil types. Benzene (11.9, 8.9, and 5.5 mg/l), toluene (10.9, 8.6 and 6.3 mg/l) and xylene (12.8, 8.5 and 5.8 mg/l) were leached in sand, silt, and clay, respectively. Conversely, benzene (3.0, 5.3, and 7.8 mg/kg), toluene (4.0, 5.5 and 9.6 mg/kg) and xylene (4.7, 6.4 and 9.1 mg/kg) were retained in sand, silt and clay, respectively. Generally, the transport of the kerosene compounds in the different soil types was in the order of sand>silt>clay, while the retention was in the order of clay>silt>sand. The sorption coefficient (K d ) and retardation factor (R) were found to be in the order of xylene>toluene>benzene for the kerosene compounds, and in the order of clay>silt>sand for the soil types. The presence of ethanol enhanced the transport of the kerosene compounds but reduced their sorption, K d and R, to varying percentages, ranging from 12 to 76%. These effects were generally greatest in sand except in the case of R where it was in clay, and generally affected xylene more than the other aromatic kerosene compounds.

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Biodegradation of kerosene: Study of growth optimization and metabolic fate of P. janthinellum SDX7

Cited by 14 publications

References 27 publications

Biodegradation of gentamicin by bacterial consortia AMQD4 in synthetic medium and raw gentamicin sewage

Biodegradation of gentamicin by bacterial consortia AMQD4 in synthetic medium and raw gentamicin sewage

Kinetic study of carbazole degradation by free and immobilized Thalassospira profundimaris

Effect of Soil Type on the Fate of Kerosene Compounds in the Presence of Water and Ethanol

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