Results 141 to 150 of about 4,985 (183)

Biotechnological potential for degradation of isoprene: a review

Critical Reviews in Biotechnology, 2017
Isoprene, the ubiquitous, highly emitted non-methane volatile hydrocarbon, affects atmospheric chemistry and human health, and this makes its removal from the contaminated environment imperative. Physicochemical degradation of isoprene is inefficient and generates secondary pollutants.
Navnita, Srivastva, Abhishek, Singh, Yashpal, Bhardwaj, Suresh Kumar, Dubey   +3 more
openaire   +2 more sources

Poly-cis-isoprene Degradation by Nocardia sp. BSTN01 Isolated from Industrial Waste

Applied Biochemistry and Biotechnology, 2022
The natural and synthetic rubber (NR and SR) products are made up of poly-cis-isoprene which are estimated as one of the major solid-wastes and need to be cleared through bacterial bioremediation. The present research reports isolation and characterization of a gram-positive, non-spore forming, filamentous actinomycete Nocardia sp.
Biraj Sarkar, Aayatti Mallick Gupta, Maulin P. Shah, Sukhendu Mandal   +3 more
openaire   +2 more sources

Molecular characterization and kinetics of isoprene degrading bacteria

Bioresource Technology, 2019
Isoprene, the highly reactive volatile organic compound, is used as monomer for the synthesis of several useful polymers. Its extensive production and usage leads to contamination of air. Once released, it alters the atmospheric chemistry by reacting with hydroxyl radicals (OH) and nitrogen oxides (NOx) to generate tropospheric ozone.
Abhishek, Singh, Navnita, Srivastava, Suresh Kumar, Dubey   +2 more
openaire   +2 more sources

Degradation kinetics and metabolites in continuous biodegradation of isoprene

Bioresource Technology, 2016
The kinetic parameters of isoprene biodegradation were studied in a bioreactor, comprising of bioscrubber and polyurethane foam packed biofilter in series and inoculated with Pseudomonas sp., using a Michaelis-Menten type model. The maximum elimination capacity, ECmax; substrate constant, Ks and ECmax/Ks values for bioscrubber were found to be 666.7 g ...
Navnita, Srivastva, Ram S, Singh, Siddh N, Upadhyay, Suresh K, Dubey   +3 more
openaire   +2 more sources

Genetics and Ecology of Isoprene Degradation

2017
Approximately 550 million tonnes of the monoterpene, isoprene, are emitted to the atmosphere annually, principally from terrestrial plants. In contrast to methane, which is emitted in similar quantities, little is known about the biodegradation of isoprene.
Crombie, Andrew T, Mejia-Florez, Nasmille L, McGenity, Terry J, Murrell, J Colin   +3 more
openaire   +2 more sources

The kinetics of degradation of styrene‐isoprene copolymer

Lubrication Science, 1998
AbstractViscosity modifiers are one of the most important components of multi‐viscosity grade lubricants. In use, the lubricant heats up and the ingredients degrade and deplete. In an attempt to understand the thermal and thermal‐oxidative behaviour of viscosity modifiers, we have studied the effects of heat in both inert and oxidative atmospheres. The
N. M. Desai, N. C. Joshi
openaire   +1 more source

H2O2/UV degradation kinetics of isoprene in aqueous solution

Journal of Hazardous Materials, 2000
Hydrogen peroxide and UV radiation have been used in the photochemical degradation of isoprene in aqueous solutions. A kinetic study is carried out taking into account the contribution of the UV radiation reaction and the combined reaction with hydrogen peroxide.
E M, Elkanzi, G, Bee Kheng
openaire   +2 more sources

Ozone degradation of vulcanized isoprene rubber as a function of humidity

Polymer Degradation and Stability, 2017
Abstract Ozone degradation of vulcanized isoprene rubber was investigated by changing atmospheric humidity. Ozone exposure test of the vulcanized isoprene rubber was carried out with 50 pphm ozone at 40 °C, for 48 h under relative humidity (RH) between 20 and 90%, after a strain of 0.2 stretching.
Yuka Iwase, Toru Shindo, Hiroaki Kondo, Yoshito Ohtake, Seiichi Kawahara   +4 more
openaire   +1 more source

Kinetic and molecular analyses reveal isoprene degradation potential of Methylobacterium sp.

Bioresource Technology, 2017
Efforts were made to isolate and characterize bacteria capable of growing on methane and organic compounds, and to achieve the simultaneous degradation of more than one pollutant. Among the methanotrophs, species of Methylobacterium was able to catabolize a variety of hydrocarbons, including the branched-chain alkenes. Therefore, laboratory incubations
Srivastva, N., Vishwakarma, P., Bhardwaj, Y., Singh, A., Manjunath, K., Dubey, S.K.   +5 more
openaire   +2 more sources