Characterization of oily sludge from a refinery and biodegradability assessment using various hydrocarbon degrading strains and reconstituted consortia

Jasmine, Jublee; Mukherji, Suparna

doi:10.1016/j.jenvman.2014.10.007

Cited by 114 publications

(43 citation statements)

References 33 publications

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“…In the present study, increase in CFU counts and TPH degradation showed good agreement with nitrate addition as both were favored maximally during the first 15 days, followed by near saturation of cell numbers till 60 days corroborating several other reports ( Margesin et al, 2007 ; Machin-Ramirez et al, 2008 ; Mair et al, 2013 ). The level of biodegradation achieved by nitrate amendment in our sample (80% in 12 weeks) corroborated well with earlier reports on biostimulation studies ( Bento et al, 2005 ; Margesin et al, 2007 ; Machin-Ramirez et al, 2008 ; Couto et al, 2010 ; Mair et al, 2013 ; Jasmine and Mukherji, 2015 ). GC-FID based analysis of C chain length distribution showed that higher C chain length compounds could be efficiently degraded following N amendment.…”

Section: Discussionsupporting

confidence: 93%

Biostimulation of Indigenous Microbial Community for Bioremediation of Petroleum Refinery Sludge

et al. 2016

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Nutrient deficiency severely impairs the catabolic activity of indigenous microorganisms in hydrocarbon rich environments (HREs) and limits the rate of intrinsic bioremediation. The present study aimed to characterize the microbial community in refinery waste and evaluate the scope for biostimulation based in situ bioremediation. Samples recovered from the wastewater lagoon of Guwahati refinery revealed a hydrocarbon enriched [high total petroleum hydrocarbon (TPH)], oxygen-, moisture-limited, reducing environment. Intrinsic biodegradation ability of the indigenous microorganisms was enhanced significantly (>80% reduction in TPH by 90 days) with nitrate amendment. Preferred utilization of both higher- (>C30) and middle- chain (C20-30) length hydrocarbons were evident from GC-MS analysis. Denaturing gradient gel electrophoresis and community level physiological profiling analyses indicated distinct shift in community’s composition and metabolic abilities following nitrogen (N) amendment. High throughput deep sequencing of 16S rRNA gene showed that the native community was mainly composed of hydrocarbon degrading, syntrophic, methanogenic, nitrate/iron/sulfur reducing facultative anaerobic bacteria and archaebacteria, affiliated to γ- and δ-Proteobacteria and Euryarchaeota respectively. Genes for aerobic and anaerobic alkane metabolism (alkB and bssA), methanogenesis (mcrA), denitrification (nirS and narG) and N2 fixation (nifH) were detected. Concomitant to hydrocarbon degradation, lowering of dissolve O2 and increase in oxidation-reduction potential (ORP) marked with an enrichment of N2 fixing, nitrate reducing aerobic/facultative anaerobic members [e.g., Azovibrio, Pseudoxanthomonas and Comamonadaceae members] was evident in N amended microcosm. This study highlighted that indigenous community of refinery sludge was intrinsically diverse, yet appreciable rate of in situ bioremediation could be achieved by supplying adequate N sources.

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Section: Discussionsupporting

confidence: 93%

Biostimulation of Indigenous Microbial Community for Bioremediation of Petroleum Refinery Sludge

et al. 2016

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“…Observa-se que nenhum evento característico de cristalização aparece no CAP 50/70 e nem da borracha de pneu, na faixa de temperatura analisada, já que ambos são amorfos. Contudo, pico característico de cristalização é evidenciado na borra oleosa de petróleo, na blenda M1 e no ligante modificado CM1, de certo advindo da presença de fase cristalina presente na borra oleosa de petróleo [16,17,18]. Observa-se também que o referido pico de cristalização é deslocado para a direita na blenda M1 e ligeiramente para a esquerda, no ligante modificado CM1, indicando que a presença da borracha de pneu inservível facilita a cristalização da fase cristalina presente na borra oleosa de petróleo, enquanto que a presença do CAP 50/70 inibiu a cristalização da citada fase na amostra CM1, sinalizando em ambas as situações a existência de fase cristalina advinda da adição da borra oleosa de petróleo e que a sua presença também pode estar relacionada ao fenômeno de quimissorção entre o CAP 50/70 e componentes cristalizáveis presentes na borra oleosa [19,20].…”

Section: Comportamento Térmico Por Dsc Do Cap 50/70 Puro E Modificadounclassified

Avaliação da estabilidade de estocagem de ligante asfáltico modificado com blenda de borra oleosa de petróleo e borracha de pneus

Graça¹,

Cavalcante²,

Cardoso

2015

Scientia Plena

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<p><span style="font-family: Times New Roman; font-size: small;">O desenvolvimento de novas tecnologias para minimizar os efeitos da ação de variações climáticas e da alta densidade de tráfego em pavimento rodoviários vem sendo pesquisado nos últimos anos empregando macromoléculas e aditivos modificadores de ligante asfáltico na busca de misturas asfálticas de alto desempenho. O objetivo deste trabalho foi utilizar borra oleosa de fundo de tanque, oriunda de unidade de tratamento primário de petróleo, um passivo de difícil disposição no ambiente, como agente de modificação de cimento asfáltico de petróleo, CAP 50/70, e avaliar a estabilidade de estocagem do ligante modificado quanto à separação de fase por meio de análise térmica e reológica. Devido à difícil dispersão da borra oleosa de petróleo no CAP 50/70, blenda de borracha de pneus inservíveis com borra oleosa de petróleo, na proporção 15/85% em massa foi preparada e utilizada como agente modificador, na quantidade de 10% em massa. Os resultados obtidos mostram que o referido ligante modificado atende às especificações brasileiras, no que se refere à temperatura de usinagem e compactação de misturas do tipo CAUQ, empregadas em revestimentos de pavimento rodoviário. Contudo, há separação de fase no ligante modificado na concentração dos modificadores estudados, tornando necessários estudos complementares sobre estabilidade de estocagem. </span></p>

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“…Oil sludge is a mixture of mud and sand contaminated by crude oil in the process of oil extraction, storage, transportation and processing [1]. Oil sludge contains a large quantity of hydrocarbons and heavy metal components [2][3][4]. Long-term open stacking not only pollutes the atmospheric environment but also occupies a large amount of land resources [5,6].…”

Section: Introductionmentioning

confidence: 99%

“…Through previous studies, it was found that the organic matter content of refined oil sludge was commonly very low, with a pungent smell [2,4]. Before and after the pretreatment of single-oil sludge, there was no beneficial effect observed in co-digestion and biogas production, although production was greatly improved by the addition of exogenous nutrients.…”

Section: Introductionmentioning

confidence: 99%

Anaerobic Co-Digestion of Oil Sludge with Corn Stover for Efficient Biogas Production

Yang

Zhang

et al. 2020

Sustainability

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The feasibility of anaerobic co-digestion for the utilization of oil sludge was verified using corn stover, to assess the influence of different raw material ratios and inoculum volumes on the properties of the generated gas. The anaerobic co-digestion method is a novel treatment technology, which may help to solve the problem of pollution by hazardous waste oil sand from the oil exploitation and smelting process. Results showed that single-oil sludge was not suitable for gas production as a digestive substrate due to the lack of organic materials and possible hazardous materials. With the increase in the quality of exogenous organic matter (corn stover), the cumulative gas production volume was proportional to the amount of corn stover material added. It was established that when the mass ratio of corn stover to oil sludge was 4:1, the gas production performance was optimal, with a cumulative gas yield of 1222.5 mL using an inoculum volume of 30 mL. The results of this study provide a fundamental parameter baseline for the treatment of oil sludge and the improvement of gas production efficiency.

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Characterization of oily sludge from a refinery and biodegradability assessment using various hydrocarbon degrading strains and reconstituted consortia

Cited by 114 publications

References 33 publications

Biostimulation of Indigenous Microbial Community for Bioremediation of Petroleum Refinery Sludge

Biostimulation of Indigenous Microbial Community for Bioremediation of Petroleum Refinery Sludge

Avaliação da estabilidade de estocagem de ligante asfáltico modificado com blenda de borra oleosa de petróleo e borracha de pneus

Anaerobic Co-Digestion of Oil Sludge with Corn Stover for Efficient Biogas Production

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