Biodegration of Tapis Crude Oil Using Consortium of Bacteria and Fungi: Optimization of Crude Oil Concentration and Duration of Incubation by Response Surface Methodology

Hamzah, Ainon; Manikan, Vidyah; Aziz, Nur Ain Fathiha Abd

doi:10.17576/jsm-2017-4601-06

Cited by 17 publications

(15 citation statements)

References 19 publications

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“…There were significant differences ( p < .01) in the degradation percentage between the fungus in this experiment and that in the previous experiment without biostimulation. It appeared that the longer incubation time presented more efficient results; that is, a higher fungal biomass in contact with the PAH compounds leads to higher levels of PAH degradation (Hamzah, Manikan, & Abd Aziz, 2017; Satti, Shah, Marsh, & Auras, 2018). Several reports state that the degradation process was maximized once optimal conditions for growth were achieved (Ali et al, 2012; Govarthanan et al, 2017; Hamzah et al, 2012; Wu et al, 2016).…”

Section: Resultsmentioning

confidence: 99%

Factors affecting polycyclic aromatic hydrocarbon biodegradation by Aspergillus flavus

Al‐Dossary

Abood

Al‐Saad

2020

Remediation Journal

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This study investigated the ability of fungi isolated from highly contaminated soil to biodegrade polycyclic aromatic hydrocarbon (PAH) compounds, as well as the effect of several parameters on the biodegradation ability of these fungi. The isolated fungi were identified using ITS rDNA sequencing and tested using 2,6‐dichlorophinolendophenol to determine their preliminary ability to degrade crude oil. The top‐performing fungi, Aspergillus flavus and Aspergillus fumigatus, were selected to test their ability to biodegrade PAH compounds as single isolates. After 15 days of incubation, A. flavus degraded 82.7% of the total PAH compounds, with the complete degradation of six compounds, whereas A. fumigatus degraded 68.9% of the total PAHs, with four aromatic compounds completely degraded. We also tested whether different temperatures, pH, and nitrogen sources influenced the growth of A. flavus and the degradation rate. The degradation process was optimal at a temperature of 30°C, pH of 5.5, and with nitrogen in the form of yeast extract. Finally, the ability of the fungal candidate, A. flavus, to degrade PAH compounds under these optimum conditions was studied. The results showed that 95.87% of the total PAHs, including 11 aromatic compounds, were completely degraded after 15 days of incubation. This suggests that A. flavus is a potential microorganism for the degradation of PAH compounds in aqueous cultures.

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Section: Resultsmentioning

confidence: 99%

Factors affecting polycyclic aromatic hydrocarbon biodegradation by Aspergillus flavus

Al‐Dossary

Abood

Al‐Saad

2020

Remediation Journal

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“…After incubation, we proceeded to review the macroscopic modifications on the films, observing for changes in color, occurrence of holes and development of microorganisms on the surface (Lucas et al, 2008). In addition, the fungus mass was collected, filtered, dried at 60 °C for 72 hours and weighed to compare its growth vs. controls (Hamzah, Manikan, & Abd Aziz, 2017). Also, the spectra of the films were obtained by FTIR at the end of the test and compared with the spectra at the beginning.…”

Section: Screening Of Pvc Degrading Fungimentioning

confidence: 99%

Biodegradation of polyvinyl chloride by Mucor s.p. and Penicillium s.p. isolated from soil

Pardo-Rodríguez

Zorro-Mateus

2021

rev. investig. desarro. innov

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PVC is one of the most widely used plastics today and the one that produces the most waste. In recent years, microorganisms capable of degrading it have been reported, most of which come from environments in which PVC is accumulated. The aim of this work was to study the degradation of PVC without plasticizer, from fungi isolated from a soil sample contaminated with PVC resin. The fungi were isolated and morphologically characterized, 30 morphospecies were obtained, 8 were chosen to undergo preliminary tests in a medium whose only carbon source was a PVC film. Growth curves of the two isolates with better results were made and their molecular identification showed that they corresponded to Penicillium sp. and Mucor sp., the latter gained biomass from PVC and in both cases, the films showed visible changes, which were supported by infrared spectra. Although the results shown in this article are preliminary, they open the door to new forms of PVC waste degradation that are very persistent.

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“…is is for the reason that a single bacterial isolate (monoculture) can only utilize a limited range of hydrocarbon substrates [64], while mixed bacterial isolates (polyculture and consortium) are efficient to metabolize highly concentrated and broad hydrocarbon contaminants [30]. is is because consortia of bacteria possess broad degradative enzymes, degrade different hydrocarbon components (aliphatic and aromatics), have a higher tolerance to physic-chemical parameters (temperature, pH, and salinity) and a higher rate of surface-active biomolecules (biosurfactants) synthesis, and cope up with synergistic effect to maximize the rate of bioremediation [65,66]. erefore, understanding community structure, diversity, and interaction is essential to define the metabolic potential (metabolic diversity) and hydrocarbon specificity of hydrocarbon-degrading communities [48].…”

Section: Bacterial Community Structure and Diversity/microbialmentioning

confidence: 99%

“…Hence, the activities of these antagonistic bacteria have to be controlled to encourage the continued development of viable potential bacterial consortia. Many studies showed that microbial communities (bacteria, fungi, yeasts, and algae) play a great role in the biodegradation of hydrocarbon pollutants [56,65]. ere are several bacterial genera that are tested for the degradation of hydrocarbon (Table 2).…”

Section: Bacterial Community Structure and Diversity/microbialmentioning

confidence: 99%

Factors Influencing the Bacterial Bioremediation of Hydrocarbon Contaminants in the Soil: Mechanisms and Impacts

Kebede

Tafese

Abda

et al. 2021

Journal of Chemistry

123

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The discharge of hydrocarbons and their derivatives to environments due to human and/or natural activities cause environmental pollution (soil, water, and air) and affect the natural functioning of an ecosystem. To minimize or eradicate environmental pollution by hydrocarbon contaminants, studies showed strategies including physical, chemical, and biological approaches. Among those strategies, the use of biological techniques (especially bacterial biodegradation) is critically important to remove hydrocarbon contaminants. The current review discusses the insights of major factors that enhance or hinder the bacterial bioremediation of hydrocarbon contaminants (aliphatic, aromatic, and polyaromatic hydrocarbons) in the soil. The key factors limiting the overall hydrocarbon biodegradation are generally categorized as biotic factors and abiotic factors. Among various environmental factors, temperature range from 30 to 40°C, pH range from 5 to 8, moisture availability range from 30 to 90%, carbon/nitrogen/phosphorous (C/N/P; 100:20:1) ratio, and 10–40% of oxygen for aerobic degradation are the key factors that show positive correlation for greatest hydrocarbon biodegradation rate by altering the activities of the microbial and degradative enzymes in soil. In addition, the formation of biofilm and production of biosurfactants in hydrocarbon-polluted soil environments increase microbial adaptation to low bioavailability of hydrophobic compounds, and genes that encode for hydrocarbon degradative enzymes are critical for the potential of microbes to bioremediate soils contaminated with hydrocarbon pollutants. Therefore, this review works on the identification of factors for effective hydrocarbon biodegradation, understanding, and optimization of those factors that are essential and critical.

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Biodegration of Tapis Crude Oil Using Consortium of Bacteria and Fungi: Optimization of Crude Oil Concentration and Duration of Incubation by Response Surface Methodology

Abstract: Response surface analysis was conducted to optimize the concentrations of Tapis crude oil and duration of incubation in

Cited by 17 publications

References 19 publications

Factors affecting polycyclic aromatic hydrocarbon biodegradation by Aspergillus flavus

Factors affecting polycyclic aromatic hydrocarbon biodegradation by Aspergillus flavus

Biodegradation of polyvinyl chloride by Mucor s.p. and Penicillium s.p. isolated from soil

Factors Influencing the Bacterial Bioremediation of Hydrocarbon Contaminants in the Soil: Mechanisms and Impacts

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