نتایج جستجو برای Biodegradation

تعداد نتایج: 3818  

2011
Gary T. Howard,

Polyurethanes represent a class of polymers that have found a widespread use in the medical, automotive and industrial fields. Polyurethanes can be found in products such as furniture, coatings, adhesives, constructional materials, fibers, paddings, paints, elastomers and synthetic skins. Polyurethane is abbreviated as PUR in compliance with official German and International standards. However,...

Journal: :Environmental toxicology and chemistry 2001
C A Staples, C G Naylor, J B Williams, W E Gledhill,

The ultimate biodegradation of the commercial products nonylphenol ethoxylates (NPE9), octylphenol ethoxylates (OPE9), and their biodegradation intermediates, NPE1.5, OPE1.5, NP, and OP, was measured using conventional methods. The extent of biodegradation was also determined by gas chromatography/mass spectrometry (GC/MS) and high-performance liquid chromatography (HPLC) analysis of metabolite...

2002
Deborah K. Tipton, Dennis E. Rolston, Kate M. Scow,

ing water (Giblin et al., 2000a,b; Herman and Frankenberger, 1999; Miller and Logan, 2000; Wallace et al., Perchlorate (ClO 4 ) contamination of ground water and surface 1998; Kim and Logan, 2000, 2001). Factors that affect the water is a widespread problem, particularly in the western United States. This study examined the effect of biodegradation on perchlofate and transport of perchlorate in...

2013
Yassellis Ruiz, Luis Medina, Margarita Borusiak, Nairalith Ramos, Gilberto Pinto, Oscar Valbuena,

Polyethoxylated nonylphenols, with different ethoxylation degrees (NPEO x ), are incorporated into many commercial and industrial products such as detergents, domestic disinfectants, emulsifiers, cosmetics, and pesticides. However, the toxic effects exerted by their degradation products, which are persistent in natural environments, have been demonstrated in several animal and invertebrate aqua...

2008
C. Indu Nair, K. Jayachandran, Shankar Shashidhar,

The use of microbial catalysts in the biodegradation of organic compounds has advanced significantly during the past three decades. It has been found that large numbers of microbes co-exist in almost all natural environments, particularly in soils. Many natural and synthetic organic chemicals are readily biodegradable in natural environment. Biodegradation of materials involve initial proximity...

Journal: :Annual review of microbiology 1995
J C Spain,

Nitroaromatic compounds are released into the biosphere almost exclusively from anthropogenic sources. Some compounds are produced by incomplete combustion of fossil fuels; others are used as synthetic intermediates, dyes, pesticides, and explosives. Recent research revealed a number of microbial systems capable of transforming or biodegrading nitroaromatic compounds. Anaerobic bacteria can red...

2009
Mukesh Doble,

Exhaustive studies on the degradation of plastics have been carried out in order to overcome the environmental problems associated with synthetic plastic waste. Recent work has included studies of the distribution of synthetic polymer-degrading microorganisms in the environment, the isolation of new microorganisms for biodegradation, the discovery of new degradation enzymes, and the cloning of ...

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...

2013
Sonja Nybom,

Water is an essential natural resource, necessary for drinking, agriculture and industrial activities, and providing the human population with safe drinking water is one of the most important issues in public health. Cyanobacteria produce toxins that may present a hazard for drinking water safety. These toxins are structurally diverse and their effects range from liver damage, including liver c...

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