research centers


Search results: Found 3

Listing 1 - 3 of 3
Sort by

Article
Viability, survivability and tolerability of Rhodococcus pyridinivorans GM3 for phenol concentrations

Authors: Mahammed E. Jabbar Al-Defiery --- Gopal Reddy
Journal: Mesopotamia Environmental Journal بيئة وادي الرافدين ISSN: 24102598 Year: 2015 Volume: 1 Issue: 3 Pages: 57-65
Publisher: Babylon University جامعة بابل

Loading...
Loading...
Abstract

Microorganisms play a major role in saving our environment by degrading xenobiotic compounds and chemical wastes, which are toxic either in their native or modified form. Bacteria capable of degrading phenol are common and comprise aerobic and anaerobic catabolizing phenol as a sole source of energy and carbon.The bacterial isolate Rhodococcus pyridinivorans GM3 was studied for viability, survivability and tolerability GM3 for different concentrations of phenol in mineral salts medium(MSM). The results showed that R. pyridinivorans GM3 had powerful adaptability to the some conditions of environment, which exhibited that it has a high survivability and tolerability upto 7.0 g/L of phenol concentration in the medium. The tolerance of microorganism to phenol toxicity reduced with increasing concentrations. There was increase in survivability of R. pyridinivorans GM3 on MSM when inoculum size was increased from 1% to 4%.The results suggest that inoculum size led to increase survivability and tolerability. The results of this study clearly demonstrate that presence of phenol in media upto 2.0 g/L does not adversely affect the viability. However, the inhibitory effect of phenol on viability indicated that GM3 could not degrade 2.5 g/L phenol concentration with 1% inoculum size. R. pyridinivoransGM3 exhibited highest potential forphenol concentrations.


Article
Influence of metal ions concentration on phenol degradation by Rhodococcus pyridinivorans GM3

Authors: Mahammed E Jabbar Al_Defiery --- Gopal Reddy
Journal: Mesopotamia Environmental Journal بيئة وادي الرافدين ISSN: 24102598 Year: 2014 Volume: 1 Issue: 1 Pages: 30-38
Publisher: Babylon University جامعة بابل

Loading...
Loading...
Abstract

Phenol is discharged in large quantities to in the environment, and because of its persistence andhigh toxicity, can be a potential threat to human health; therefore, biodegradation be recognized as a bestway for removing phenol from the environment. Industrial water is often polluted with metal ions, whichmay effect on phenol degradation. Some metal ions are useful for microorganisms but other metal ions mayhave toxic effects, perhaps increased metal ions in wastewater have negative impact on microorganisms.Phenol degrading bacterium was isolated from soil samples by enrichment method and has been identifiedas Rhodococcus pyridinivorans GM3. Rhodococcus pyridinivorans was studied to degrade phenol (1.5and 2.0 g/L concentrations of phenol) with different concentrations of 19 different metal ions. The resultsshowed that R. pyridinivorans GM3 was degraded phenol on concentrations 1.5 and 2.0 g/L at 150 ppm 2+ 5– 2+ + 2+ 2+ 2+ 2+ 2+concentrations of Ba , As and Pb , while metal ions Ag >Cd >Hg >Zn >Cu >Co have inhibited degradation of phenol (2.0 g/L concentration) was observed. The results clearly indicated that R. pyridinivorans GM3 can degrade phenol with many of metal ions and has may be employed for degradation of phenol in industrial wastewaters that are contaminated with metal ions.


Article
Aerobic biodegradation of phenol

Authors: Mahammed E J. Al-Defiery --- Gopal Reddy
Journal: Mesopotamia Environmental Journal بيئة وادي الرافدين ISSN: 24102598 Year: 2019 Volume: 5 Issue: 2 Pages: 20-41
Publisher: Babylon University جامعة بابل

Loading...
Loading...
Abstract

Phenol [C6H5OH] is a sweet-smelling compound generally present in effluents of numerous businesses. Phenol is far reaching toxin in the earth, amazingly perilous and determined in water speaking to genuine environmental issue and general wellbeing hazard. The destiny and conduct of phenol in nature is about the worry for the ecological toxicology and general wellbeing checking. Different microorganisms are engaged with the vigorous biodegradation process other than natural parameters that influence phenol debasement. Supplement prerequisite, bioavailability of phenol and other natural variables assume a significant job in understanding the procedure of phenol debasement. Be that as it may, the current the phenol in condition parts has been the real natural toxin present among the wide assortment of poisonous natural synthetic concoctions and biodegradation is an alternative that give the likelihood to crush different innocuous contaminant of phenol utilizing common organic activity.

Keywords

Phenol --- Aerobic --- Biodegradation

Listing 1 - 3 of 3
Sort by
Narrow your search

Resource type

article (3)


Language

English (3)


Year
From To Submit

2019 (1)

2015 (1)

2014 (1)