Biodegradation of Baleym Mix Crude Oil in Soil Microcosm by Some Locally Isolated Egyptian Bacterial Strains

2008 ◽  
Vol 17 (2) ◽  
pp. 150-162 ◽  
Author(s):  
Laila A. Farahat ◽  
Nour Sh. El-Gendy
Keyword(s):  
Crude Oil ◽  
Soil Microcosm ◽  
Bacterial Strains

Crude Oil Biodegradation by Newly Isolated Bacterial Strains and Their Consortium Under Soil Microcosm Experiment

2019 ◽  
Vol 189 (4) ◽  
pp. 1223-1244 ◽  
Author(s):  
Marie Thérèse Bidja Abena ◽  
Naranjargal Sodbaatar ◽  
Tongtong Li ◽  
Narantuya Damdinsuren ◽  
Battsetseg Choidash ◽  
...  
Keyword(s):  
Crude Oil ◽  
Soil Microcosm ◽  
Bacterial Strains ◽  
Microcosm Experiment ◽  
Oil Biodegradation ◽  
Soil Microcosm Experiment

Bioremediation potential of native hydrocarbon degrading bacterial strains in crude oil contaminated soil under microcosm study

2014 ◽  
Vol 94 ◽  
pp. 79-89 ◽  
Author(s):  
Abhijit Sarma Roy ◽  
Reshita Baruah ◽  
Maina Borah ◽  
Anil Kumar Singh ◽  
Hari Prasanna Deka Boruah ◽  
...  
Keyword(s):  
Crude Oil ◽  
Contaminated Soil ◽  
Bacterial Strains ◽  
Microcosm Study

scholarly journals Chromium Resistant Bacteria: Impact on Plant Growth in Soil Microcosm

2014 ◽  
Vol 40 (2) ◽  
pp. 81-89 ◽  
Author(s):  
Hanane Sayel ◽  
Nezha Tahri Joutey ◽  
Wifak Bahafid ◽  
Naima El Ghachtouli
Keyword(s):  
Growth Parameters ◽  
Soil Microcosm ◽  
Resistant Bacteria ◽  
Bacterial Strains ◽  
Bacterial Inoculation ◽  
High Concentration ◽  
Soil Microcosms ◽  
Root And Shoot Length ◽  
Enterobacter Amnigenus ◽  
Enterococcus Gallinarum

Abstract Three chromium resistant bacterial strains, Pseudomonas fluorescens PF28, Enterobacter amnigenus EA31 and Enterococcus gallinarum S34 isolated from tannery waste contaminated soil were used in this study. All strains could resist a high concentration of K2Cr2O7 that is up to 300 mg/L. The effect of these strains on clover plants (Trifolium campestre) in the presence of two chromium salts CrCl3 and K2Cr2O7 was studied in soil microcosm. Application of chromium salts adversely affected seed germination, root and shoot length. Bacterial inoculation improved the growth parameters under chromate stress when compared with non inoculated respective controls. There was observed more than 50% reduction of Cr(VI) in inoculated soil microcosms, as compared to the uninoculated soil under the same conditions. The results obtained in this study are significant for the bioremediation of chromate pollution.

scholarly journals Characterization and assessment of biosurfactant producing indigenous hydrocarbonoclastic bacteria: potential application in bioremediation

2018 ◽  
Vol 17 (2) ◽  
pp. 103-114 ◽  
Author(s):  
Pranjal Bharali ◽  
Salam Pradeep Singh ◽  
Yasir Bashir ◽  
Nipu Dutta ◽  
Bolin Kumar Konwar ◽  
...  
Keyword(s):  
Crude Oil ◽  
Oil Recovery ◽  
Potential Application ◽  
Elevated Temperatures ◽  
Extreme Temperature ◽  
Chemical Characterization ◽  
Bacterial Strains ◽  
Hydrocarbonoclastic Bacteria ◽  
Rdna Sequencing ◽  
Thermo Stability

Abstract Petroleum and hydrocarbons contamination can be remediated by physical, chemical or biological methods. Among these, in situ bioremediation is considered to be environmentally friendly because it restores the soil structure, requires less energy input and involves the notable removal after degradation of biosurfactant. The present study involves the characterization and assessment of biosurfactant producing indigenous hydrocarbonoclastic bacteria and their potential application in bioremediation processes. Three bacterial strains were isolated from various crude oil contaminated environments and characterized using standard identification techniques. The results clearly demonstrate the capability of utilizing hydrocarbon and biosurfactant produced by the bacterial strains. 16S rDNA sequencing followed by BLAST analysis revealed their similarity to Pseudomonas aeruginosa. The physico-chemical characterization of the biosurfactants revealed significant surface properties with stability at extreme temperature conditions (up to 121˚C), pH (5 - 8) and salinity (up to 4 %). Further, the mass spectrometry confirmed predominance of di-rhamnolipids in biosurfactant mixtures. The biosurfactants were found to be efficient in the removal of crude oil from the contaminated sand suggesting its applicability in bioremediation technology. Further, improved discharge of crude oil at elevated temperatures also confirms their thermo-stability which, could be exploited in microbial enhanced oil recovery processes. Thus, the applications of biosurfactants produced by the indigenous hydrocarbonoclastic strains appeared to be advantageous for bioremediation of petroleum-contaminated environments.

scholarly journals Biotechnological Potentials of Microbe Assisted Eco-Recovery of Crude Oil Impacted Environment

2021 ◽  
Author(s):  
Chioma Bertha Ehis-Eriakha ◽  
Stephen Eromosele Akemu ◽  
Simon Obgaji Otumala ◽  
Chinyere Augusta Ajuzieogu
Keyword(s):  
Crude Oil ◽  
Environmental Sustainability ◽  
Phthalate Esters ◽  
Genetically Engineered ◽  
Bacterial Strains ◽  
Yield Increase ◽  
Enzymatic Systems ◽  
Polycyclic Aromatic ◽  
Challenging Situation ◽  
Contamination Concentration

Globally, the environment is facing a very challenging situation with constant influx of crude oil and its derivatives due to rapid urbanization and industrialization. The release of this essential energy source has caused tremendous consequences on land, water, groundwater, air and biodiversity. Crude oil is a very complex and variable mixture of thousands of individual compounds that can be degraded with microbes with corresponding enzymatic systems harboring the genes. With advances in biotechnology, bioremediation has become one of the most rapidly developing fields of environmental restoration, utilizing microorganisms to reduce the concentration and toxicity of various chemical pollutants, such as petroleum hydrocarbons, polycyclic aromatic hydrocarbons, polychlorinated biphenyls, phthalate esters, nitroaromatic compounds and industrial solvents. Different remediation methods have been introduced and applied with varied degrees of success in terms of reduction in contamination concentration without considering ecotoxicity and restoration of biodiversity. Researchers have now developed methods that consider ecotoxicology, environmental sustainability and ecorestoration in remediation of crude oil impacted sites and they are categorized as biotechnological tools such as bioremediation. The approach involves a natural process of microorganisms with inherent genetic capabilities completely mineralizing/degrading contaminants into innocuous substances. Progressive advances in bioremediation such as the use of genetically engineered microbes have become an improved system for empowering microbes to degrade very complex recalcitrant substances through the modification of rate-limiting steps in the metabolic pathway of hydrocarbon degrading microbes to yield increase in mineralization rates or the development of completely new metabolic pathways incorporated into the bacterial strains for the degradation of highly persistent compounds. Other areas discussed in this chapter include the biosurfactant-enhanced bioremediation, microbial and plant bioremediation (phytoremediation), their mechanism of action and the environmental factors influencing the processes.

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