In this study, cometabolic biodegradation of chloroform was experimented with mixed cultures in the presence of various organic solvents like methanol, ethanol, isopropanol, acetone, acetonitrile and toluene as these are predominant discharges in pharmaceutical industries. Toluene and acetone showed higher specific chloroform degradation rate when compared to other compounds. Cometabolic degrad...

The improved cleanup of marine oil spills by stimulating biodegradation through the use of a slow-release fertilizer is reported. A paraffin-supported fertilizer containing MgNH4PO4 as active ingredient was developed and evaluated in laboratory and field experiments using quantitative infrared spectrometry and chromatographic techniques. The biodegradation of Sarir crude oil in the sea was cons...

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,...

background petroleum hydrocarbons are mix compounds and divided into four groups: saturates, aromatics, resins and asphalten. among various phases of crude-oil, the alkanes with medium length chain are favorable substrates that rapidly degraded, although short-chain alkanes are very toxic and long-chain alkanes have low solubility in water that reduce its bioavailability and make resistant to b...

petroleum-polluted soil samples from ahvaz oilfield were enriched, using three methods to detect microorganisms with different dibenzothiophene degradation capabilities. strain nisoc-03, a nitrate-reducing, oxidase negative, catalase, citrate, and urease positive, gram negative rod, showed interesting dibenzothiophene desulfurization behavior, designated as entreobacter sp. strain nisoc-03 base...

polyurethanes (purs) are polymers that can be generated by a step-growth polyadditionreaction of diisocyanates with polyols. the number of well-developed chemical procedures applicable to theirmanufacture, and the diversity of chemical structures in which polyurethanes can be built, account for thewidespread use of these materials in the last few decades for both domestic and technical applicat...

viable cell concentration and luminescence activity of p. stutzeri p16 luxab4 was measured byplate counting and luminometery in sterile and non-sterile soil adjusted to matric potential of -1500, -750 and-30 kpa. results showed that matric potential had a significant effect on survival and activity of p. stutzerip16 luxab4 in soil. p. stutzeri p16 luxab4 could survive better in hutner’s minimal...

Aromatic hydrocarbons contaminate many environments worldwide, and their removal often relies on microbial bioremediation. Whereas aerobic biodegradation has been well studied for decades, anaerobic hydrocarbon biodegradation is a nascent field undergoing rapid shifts in concept and scope. This review presents known metabolic pathways used by microbes to degrade aromatic hydrocarbons using vari...

Experiments were conducted to investigate the fate of ethylbenzoate and soil microorganisms in shallow aquifers. Biodegradation and volatilization have been identified to be the major mechanisms in attenuating ethylbenzoate in contaminated soils. The parameters of an available model have been obtained by fitting it to the experimental data. Various facets of biodegradation, including the effect...