Toluene biodegradation and nutrient effects.
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Toluene biodegradation and nutrient effects. by Longfei Xu

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Published in 2005 .
Written in English


Book details:

Edition Notes

Statementby Lonfgei Xu.
The Physical Object
Paginationix, 77 leaves.
Number of Pages77
ID Numbers
Open LibraryOL20722308M

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including toluene ( mg), glucose ( mg), phenol ( mg),benzoate ( mg), methanol(mg), ethylene ( mg), and native dissolved organic carbon, were tested to determine their effect on the degradation of 1,ug of TCE ml-1 in Rindge and Yolo soils. With the exception of the native dissolved organic carbon, the massofeach chemicalCited by:   Toluene can enter the environment due to various industrial activities. Toluene exposure may cause serious health risks to human and other living organisms. Thus, removal of toluene from the environment is exceptionally important in toluene-contaminated habitats. The aim of present study was to isolate and characterize toluene-utilizing bacteria from contaminated soil surrounding car body Cited by: 4. In the A horizon, with an initial toluene concentration in the solution phase of mg/L, degradation was controlled by substrate‐limited growth on toluene as the primary substrate. Soil from the B and C horizons initially showed similar behavior with a lower toluene concentration of about mg/ by: Toluene degradation under sulfate-reducing condition was inhibited in the presence of molybdate alone or together with nitrate or fumarate, indicating that toluene is degraded directly by sulfate-reducing bacteria. Effects of initial toluene concentration, pH, temperature, and other hydrocarbons on toluene degradation were investigated.

, “Biodegradation of Toluene and Xylene in an UAPB Bioreactor with Fixed Film of Pseudomonas putida,” American-Eurasian J. Agric. & Environ. Sc i., 9 (1), When toluene acts as a growth substrate, as well as an exogenous molecular effector, i.e., an inducing agent that enhances specific gene expression for synthesis of enzymes required for the toluene oxygenase pathway Byrne and Olsen, , Shingleton et al., , it is reasonable to expect toluene limitation to have a significant effect on. The biodegradation ability of strain BD-a59 was evaluated with individual BTEX compounds (benzene, toluene, ethylbenzene, or o-, m-, and p-xylenes) and a mixture in ml serum bottles containing 10 ml of MSB medium and YE (if appropriate) under aerobic con-ditions in triplicate. Strain BD-a59 cells were cultured in R2A broth at 25°C for. toluene is absorbed by circulating nonionic surfactants which is of polyoxyethylene based (LA5 and LA7) Polyol- based (S Tween 20 and Tween 81) and Surfactants. The toluene removal efficiency was 70% in Tween The removal efficiency of toluene was not affected by Tween 81 which concentration is observed by effects of liquid flow.

  toluene- analytical grade, was procured from SD-Fine Chemicals Ltd/Merck, Mumbai. The Nutrient Agar and Nutrient Broth for the culture and isolation of micro-organisms were obtained from HiMedia. Gram staining kit (KKT, HiMedia) was used for isolation and characterization of .   1. Introduction. Volatile organic compounds (VOCs) are contributor to the formation of photochemical smog, ozone and secondary organic aerosol, and have serious adverse effects on the air quality, and public health (Song et al., a, Song et al., b).Toluene has high toxicity and mutagenicity, and affects the nervous system, damages the liver, kid-neys and lungs (Qi et al., ; . Toluene may volatilize from dry soil surfaces based on the moderate vapor pressure. Complete biodegradation of toluene was observed in laboratory microcosm tests during a 40 h incubation period using soils previously exposed to toluene. The biodegradation half-life in various soils was reported as several hours to 71 days (HSDB, ).   Since installation of the phytoremediation system, toluene biodegradation in groundwater has been demonstrated at the site through compound-specific isotope analysis of toluene and detection of bacterial toluene degradation genes and transcripts (Roebuck, ; Wanner et al., ). Both aerobic and anaerobic degradative processes are active in.