نتایج جستجو برای: biodegradation

تعداد نتایج: 8013  

2014
Shashi Kant Dubey Athar Hussain Shashi kant Dubey

The release of phenolic compounds in the effluents of petrochemical, textile and coal industry has resulted in contamination of receiving environment. It is very necessary to remove these compounds before discharge of effluents as phenol is toxic to nature. Among the treatment methods biodegradation is considered as cost effective method. The paper reviews various methods used for biodegradatio...

The anionic surfactant sodium dodecyl sulfate (SDS) was degraded by novel strain ofPseudomonas aeruginosa KGS under accession No. JQ328193, which was isolated from carwash wastewater. The purpose of this research was to study different optimization conditionsrequired for enhancing the biodegradation of sodium dodecyl sulfate P. aeruginosa KGS.Influence of different Physicochemical factors such ...

Behrooz Abtahi Gholamhossein Ebrahimipour Mohsen Shahriari Moghadam Nafsa Khazaei Negin Karbasi

Background: Hydrocarbons degradation is principally achieved by microorganisms in natural environments. The extent of hydrocarbons biodegradation is mainly conditioned by environmental factors and its success depends on the optimal condition for the crude oil degrading isolates. Objectives: The aims of the current study was to isolate and identify crude oil degrading bacterium from surface sed...

1998
Lynda B. M. Ellis C. Douglas Hershberger Lawrence P. Wackett

The University of Minnesota Biocatalysis/Biodegradation Database (UM-BBD, http://www.labmed.umn.edu/ umbbd/index.html ) first became available on the web in 1995 to provide information on microbial biocatalytic reactions of, and biodegradation pathways for, organic chemical compounds, especially those produced by man. Its goal is to become a representative database of biodegradation, spanning t...

Journal: :The Science of the total environment 2007
Sirpa Metsärinne Erja Ronkainen Tuula Tuhkanen Reijo Aksela Mika Sillanpää

The biodegradability of four novel diethanolamine derivative complexing agents was examined by using two biodegradation tests standardised by OECD (301B and 301F). Ethylenediaminetetraacetic acid (EDTA) and diethylenetriaminepentaacetic acid (DTPA) were employed as reference substances. Biodegradation of the new complexing agents was studied both with unacclimated and acclimated inocula as well...

2009
Guillermo Carbajosa Almudena Trigo Alfonso Valencia Ildefonso Cases

Bionemo (http://bionemo.bioinfo.cnio.es) stores manually curated information about proteins and genes directly implicated in the Biodegradation metabolism. When possible, the database includes information on sequence, domains and structures for proteins; and sequence, regulatory elements and transcription units for genes. Thus, Bionemo is a unique resource that complements other biodegradation ...

Journal: :Bioresource technology 2012
Xiao-Ying Lu Bing Li Tong Zhang Herbert H P Fang

In this study, the biodegradation of 16 polycyclic aromatic hydrocarbons (PAHs) in marine sediment was investigated under three different anoxic conditions, i.e. sulfate-only, nitrate-only and mixed nitrate/sulfate as electron acceptors. All two-, three- and four-ring PAHs showed significant biodegradation with the removal efficiencies ranging from 42% to 77%, while five- and six-ring PAHs show...

Journal: :jundishapur journal of microbiology 0
mohsen shahriari moghadam department of marine biology, faculty of biological science, shahid beheshti university, g.c., tehran, ir iran; department of marine biology, faculty of biological science, shahid beheshti university, p.o. box: 19835-389, tehran, ir iran. tel: +98-9159429131, fax: +98-2122431664 gholamhossein ebrahimipour department of microbiology, faculty of biological science, shahid beheshti university, , g.c., tehran, ir iran behrooz abtahi department of marine biology, faculty of biological science, shahid beheshti university, g.c., tehran, ir iran alireza ghassempour department of phytochemistry, medicinal plants and drugs research institute, shahid beheshti university,g.c., tehran, ir iran

materials and methods phe degrading bacteria were isolated from surface sediments. isolated strains were then identified by biochemical and molecular (16s rdna gene sequence) analysis. rsm was employed to evaluate the optimum biodegradation of phe by the most effective isolated strain. the investigated parameters included the temperature, inoculum sizes, ph, nh4cl concentration, and salinity. o...

2006
Yarrow Nelson Andrew Lassen Christopher Kitts Paul Lundegard Gonzalo Garcia

L-68, in: Bruce M. Sass (Conference Chair), Remediation of Chlorinated and Recalcitrant Compounds—2006. Proceedings of the Fifth International Conference on Remediation of Chlorinated and Recalcitrant Compounds (Monterey, CA; May 2006). ISBN 1-57477-157-4, published by Battelle Press, Columbus, OH, www.battelle.org/bookstore. Biodegradation and Toxicity of Hydrocarbons along Vertical Transects ...

Journal: :Journal of biomaterials science. Polymer edition 2001
X S Wu N Wang

A series of previously-synthesized lactic/glycolic acid polymers (PLGA) with various molar ratios of lactic to glycolic acid and various molecular weights were further studied with regard to their biodegradation behavior, and in particular, the factors affecting the biodegradation rate. The biodegradation of PLGA is affected by many factors including polymer composition, molecular weight, and n...

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