نتایج جستجو برای: microbial reduction

تعداد نتایج: 597136  

Journal: :Environmental Science & Technology 2010

P.K. Praseetha, R.P Dhanya S. Abdeen S. Geo S. Sukanya

Silver is composed of a large percentage of silver oxide due to their large ratio of surface to bulk silver atoms. Silver nanoparticles have been a potent antibacterial, antifungal, anti-viral and anti-inflammatory agent. A simple, eco-friendly, inexpensive biosynthetic method was employed to synthesize silver nanoparticles.  The present study aimed at the comparative study of silver nanopartic...

Journal: :Water research 2007
Cristian Picioreanu Ian M Head Krishna P Katuri Mark C M van Loosdrecht Keith Scott

This study describes and evaluates a computational model for microbial fuel cells (MFCs) based on redox mediators with several populations of suspended and attached biofilm microorganisms, and multiple dissolved chemical species. A number of biological, chemical and electrochemical reactions can occur in the bulk liquid, in the biofilm and at the electrode surface. The evolution in time of impo...

2018
Alex J Lewis Maria F Campa Terry C Hazen Abhijeet P Borole

Leveraging nature's biocomplexity for solving human problems requires better understanding of the syntrophic relationships in engineered microbiomes developed in bioreactor systems. Understanding the interactions between microbial players within the community will be key to enhancing conversion and production rates from biomass streams. Here we investigate a bioelectrochemical system employing ...

P.K. Praseetha, R.P Dhanya S. Abdeen S. Geo S. Sukanya

Silver is composed of a large percentage of silver oxide due to their large ratio of surface to bulk silver atoms. Silver nanoparticles have been a potent antibacterial, antifungal, anti-viral and anti-inflammatory agent. A simple, eco-friendly, inexpensive biosynthetic method was employed to synthesize silver nanoparticles.  The present study aimed at the comparative study of silver nanopartic...

Journal: :journal of oil, gas and petrochemical technology 2014
parviz darvishi shahab ayatollahi ali reza roostaei

in the present study, the potential of a bacterial consortium of enterobacter cloacae and pseudomonas sp. (ercppi-2) for microbial enhanced oil recovery was investigated. various mechanisms of enhanced oil recovery (eor) as a result of using ercppi-2 and its metabolic products were studied in detail. the obtained results showed that under simulated reservoir conditions, interfacial tension redu...

Journal: :علوم دامی ایران 0
ابراهیم نوریان سرور دانش آموختۀ دکتری تغذیۀ دام گروه علوم دامی، دانشکدۀ کشاورزی، دانشگاه تربیت مدرس، تهران، ایران یوسف روزبهان عضو هیأت علمی گروه علوم دامی، دانشکدۀ کشاورزی، دانشگاه تربیت مدرس، تهران، ایران

the effect of three levels (0, 28.65, 57.31mg /200mg substrate) of golpar (heracleum persicum: hp) on in vitro rumen ecosystem and on methane production was assessed. gas production (gp) was recorded from 1 to 54h past of incubation. the parameters studied were in vitro gas production (ivgp), methane production, ammonia-n concentration (nh3-n), in vitro organic matter degradability (ivomde), pa...

Journal: :Environmental science. Processes & impacts 2015
Elizabeth C Butler Lixia Chen Colleen M Hansel Lee R Krumholz Andrew S Elwood Madden Ying Lan

Hexavalent chromium (Cr(vi), present predominantly as CrO4(2-) in water at neutral pH) is a common ground water pollutant, and reductive immobilization is a frequent remediation alternative. The Cr(iii) that forms upon microbial or abiotic reduction often co-precipitates with naturally present or added iron (Fe), and the stability of the resulting Fe-Cr precipitate is a function of its mineral ...

Journal: :Applied and environmental microbiology 2011
Joy D Van Nostrand Liyou Wu Wei-Min Wu Zhijian Huang Terry J Gentry Ye Deng Jack Carley Sue Carroll Zhili He Baohua Gu Jian Luo Craig S Criddle David B Watson Philip M Jardine Terence L Marsh James M Tiedje Terry C Hazen Jizhong Zhou

A pilot-scale system was established to examine the feasibility of in situ U(VI) immobilization at a highly contaminated aquifer (U.S. DOE Integrated Field Research Challenge site, Oak Ridge, TN). Ethanol was injected intermittently as an electron donor to stimulate microbial U(VI) reduction, and U(VI) concentrations fell to below the Environmental Protection Agency drinking water standard (0.0...

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