Asphaltenes biodegradation under shaking and static conditions

Jahromi, Hossein; Fazaelipoor, Mohammad Hassan; Ayatollahi, Shahab; Niazi‎, Ali

doi:10.1016/j.fuel.2013.09.085

Cited by 57 publications

(39 citation statements)

References 22 publications

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“…Slow kinetics and an effective biodegradative molecular size limit of C44 has been observed in anaerobic reservoir conditions containing indigenous microbial communities 13,54,55 which have adapted to nutrient-deprived, growth arrested phenotypes over diagenesis 56 . Studies which have succeeded in biodegrading asphaltenes with microbial cultures have always done so under aerobic conditions 57–59 . Prior studies have offered hints that hydrolytic enzymes could potentially be used biodegrade petroleum compounds.…”

Section: Resultsmentioning

confidence: 99%

Release of sugars and fatty acids from heavy oil biodegradation by common hydrolytic enzymes

Mislan¹,

Gates²

2019

Sci Rep

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In response to recent advances in understanding relating to the remarkable persistence of soil organic matter during burial and diagenesis, we examine the extent to which bitumen compositionally reflects the soil organic matter from which it was derived. Through a simple set of experiments, exposure of bitumen to lipase and cellulase, two enzymes effective in the biodegradation of soil organic matter, resulted in the release of glycerin, palmitic and oleic fatty acids from lipase digestion in addition to the release of glucose, alkylphenols and acyclic polyols from fermentation with cellulase, consistent with the products expected these enzymes. These results are significant in that they suggest that heavy oils are more similar to their soil precursor than previously thought, that biodegradation of bitumen can be accelerated using common over the counter enzymes in aerobic conditions and that heavy oils, which are 1000 times more abundant than coal, can release similar biomolecules as those generated in bioreactor culture or biomass harvest, using two of the most abundantly produced enzymes presently available.

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Section: Resultsmentioning

confidence: 99%

Release of sugars and fatty acids from heavy oil biodegradation by common hydrolytic enzymes

Mislan¹,

Gates²

2019

Sci Rep

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“…Recently, Jahromi et al (2014) studied the biodegradability of asphaltenes using four different consortia. Unfortunately, they quantified the asphaltenes biodegradation by UV absorption in toluene solutions at 280 nm, before and after microbial growth.…”

Section: Degradation By Microbial Consortiamentioning

confidence: 99%

“…Even if a standard curve of known amounts of asphaltenes in toluene was used, the fact that the degradation products or other microbial metabolites can alter the estimation makes this yet simple method not appropriate for estimating asphaltene degradation. Moreover, the growth medium contained yeast extract as nitrogen source, but could also provide carbon to the consortium (Jahromi et al, 2014).…”

Section: Degradation By Microbial Consortiamentioning

confidence: 99%

Microbial and Enzymatic Biotransformations of Asphaltenes

Hernández-López

Ayala

Vázquez-Duhalt³

2015

Petroleum Science and Technology

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Asphaltenes are considered the most recalcitrant fraction of oils. Nevertheless, there are reports with rigorous experimental procedures that clearly demonstrate the capacity of enzymes and few microorganisms to transform asphaltenes. These microorganisms, fungi and bacteria, may contain a unique or very versatile enzymatic system that allows the transformation and mineralization of the highly complex asphaltene molecules. For enzymatic reactions, the biotransformation may occur only when the asphaltenes and the enzyme are in the same phase, reducing the mass transfer limitations. In this work, literature on the biotransformations of asphaltene fraction is critically reviewed.

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“…In recent years, the problems of studying the toxic effects of a number of substances on the environment has attracted significant attention both in Russia (Akimov, Kozlov, & Kosorukov, ; Kapelkina, ; Kim & Samigullina, ; Orlov, Sadovnikova, & Lozanovskaya, ; Vinorukov, Botvinko, & Srebnyak, ; Vitovskaya, Makeev, & Yakovlev, ) and abroad (Fingas, ; Foss, ; Hernández‐Lópeza, ; Jahromia, Fazaelipoora, Ayatollahib, & Niazic, ; Jones & Kammen, ; Roncevic, Dalmacija, & Ivancev Tumbas, ; Snape, Acomb, & Barnes, ; Zhan, Wu, & Zhou, ). High concentrations of numerous contaminants in the environment not only impair or destroy ecosystems, but also negatively affect human health (Dzhambetova, ; Larionov, ).…”

Section: Introductionmentioning

confidence: 99%

“…Bioremediation of oil‐contaminated soil is also common outside of Russia (Berry, ; Olu Arotiowa, Yusuf, & Adelowo‐Imoekparia, ; Panicker, Aislabie, Saul, & Bej, ; Park, Jun, & Park, ; Zhang & Miller, ). Internationally, remediation specialists commonly implement bioremediation at oil‐contaminated sites (Berry, ; Dominguez‐Rosado, Pichtel, & Coughlin, ; Foght & Westlake, ; Hernández‐Lópeza, ; Jahromia et al., ; Olu Arotiowa et al., ; Roncevic et al., ; Wyszkowska & Kucharski, ). International colleagues also have identified the favorable synergistic effect in the joint use of some grassy plants and microorganisms in the restoration of oil‐contaminated soils, which improves the overall remediation effectiveness (Tang, Wang, & Niu, ).…”

Section: Introductionmentioning

confidence: 99%

Increase in remediation processes of oil‐contaminated soils

Лифшиц

Glyaznetsova

Chalaya

et al. 2017

Remediation Journal

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A study was conducted in the region of the Lena River, in northeast Russia, where oil‐contaminated soil remediation is compromised due to the reduced natural attenuation mechanisms in northern eco‐systems. The goal of the study was to analyze the effectiveness of different biological methods for remediating the permafrost soil cover contaminated with high concentrations of oil. For the remediation of the areas with approximately similar levels of contamination (in the range of 10 to 14 grams per kilogram [g/kg] of soil) different biological remediation schemes were applied: site 1: sowing plant seeds of meadow clover grass; site 2: introducing a consortium of hydrocarbon oxidizing microorganisms (HOM); and, site 3: introducing the same consortium of HOM with simultaneously sowing grass mixture. The third scheme, applied for the first time, led to the most favorable results, which might be explained by the synergistic effect based on the principle of positive inverse development.

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Asphaltenes biodegradation under shaking and static conditions

Cited by 57 publications

References 22 publications

Release of sugars and fatty acids from heavy oil biodegradation by common hydrolytic enzymes

Release of sugars and fatty acids from heavy oil biodegradation by common hydrolytic enzymes

Microbial and Enzymatic Biotransformations of Asphaltenes

Increase in remediation processes of oil‐contaminated soils

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