Results 141 to 150 of about 5,218 (170)
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Kinetic and molecular analyses reveal isoprene degradation potential of Methylobacterium sp.
Bioresource Technology, 2017Efforts 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
Suresh Dubey
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H2O2/UV degradation kinetics of isoprene in aqueous solution
Journal of Hazardous Materials, 2000Hydrogen 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
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Collaborative studies of thermo-oxidative degradation of styrene–isoprene diblock copolymer
Polymer, 2005Abstract Mechanisms and dynamics of thermo-oxidative degradation of styrene- co -isoprene (SI) diblock at a temperature above the order–disorder transition temperature, T odt , have been investigated both experimentally and theoretically. The structural development of SI during degradation was monitored by optical microscopy, and the reduction of ...
Thein Kyu
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Poly-cis-isoprene Degradation by Nocardia sp. BSTN01 Isolated from Industrial Waste
Applied Biochemistry and Biotechnology, 2022The 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 +3 more
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Molecular ecology of isoprene degraders in the terrestrial environment [PDF]
, 2018 Isoprene (2-methyl 1, 3-butadiene) is the most abundant non-methane BVOC (biogenic volatile organic compound) released into the atmosphere. Terrestrial plants are the primary producers of isoprene and release 500-750 million tonnes of isoprene per year, to protect themselves from abiotic environmental stresses such as heat and reactive oxygen species ...
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In vitro studies on the degradation of poly( cis ‐1,4‐isoprene)
Biotechnology Progress, 2018Cleavage of the backbone of poly( cis ‐1,4‐isoprene) (IR) in solid rubber material was accomplished by the addition of partially purified latex clearing protein (Lcp1 VH2 ) using a 200‐mL enzyme reactor. Two strategies for the addition of Lcp1
R. Andler +3 more
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Degradation of Isoprene in the Presence of Sulphoxy Radical Anions
Journal of Atmospheric Chemistry, 2004Autoxidation of S(IV) initiated by manganese sulphate or potassium peroxydisulphate in alkaline aqueous solutions was significantly slowed down by dissolved isoprene, which decayed in the process. The laboratory experiments were carried out in a batch, perfectly mixed reactor, which had no gas space.
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Isoprene and its degradation products as strong ozone precursors in Insubria, Northern Italy
Atmospheric Environment, 2002Abstract Frequent smog episodes occur during spring, summer, and autumn in Insubria, Northern Italy. On a test site in this area the atmospheric concentration of the photo-oxidants ozone and peroxyacetyl nitrate has been monitored over a year (2000) together with ozone precursors listed in the European Union Air Quality Directive 2002/3/EC, such as ...
C Astorga
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Chemosphere, 2009
Scission of sulfide linkages in vulcanized rubber has been a major concern since the early 20th century, because devulcanization is a key process for recycling waste rubber products as polymer materials that pose low environmental risks. We herein demonstrate that lipid peroxidation (LPO) of linoleic acid by manganese peroxidase (MnP), a proposed ...
Shin, Sato +5 more
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Scission of sulfide linkages in vulcanized rubber has been a major concern since the early 20th century, because devulcanization is a key process for recycling waste rubber products as polymer materials that pose low environmental risks. We herein demonstrate that lipid peroxidation (LPO) of linoleic acid by manganese peroxidase (MnP), a proposed ...
Shin, Sato +5 more
openaire +2 more sources
Degradation Behaviors of Natural, Guayule, and Synthetic Isoprene Rubbers
Rubber Chemistry and Technology, 1989Abstract The degradation behavior of three isoprene based rubbers, NR, GR, and IR, under accelerated thermal and uv radiative environments have been investigated, and the extents of the degradation are compared. The oxidative degradation introduces oxygen atoms into the elastomer chains to form carbon—oxygen linkages via hydroxyl, ether ...
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