Aerobic biodegradation behavior of nonylphenol monopropoxyethoxylates was investigated in two tests with different inocula-sewage sludge and river water. Both primary biodegradation and formation of different biodegradation intermediates were studied. Primary biodegradation of nonylphenol monopropoxyethoxylates was relatively fast and complete with the sewage sludge as the inoculum. On the othe...

A thermotolerant Candida tropicalis strain No. 10 was isolated from a chemical contaminated soil sample. The strain was capable of degrading 100 mg/L phenol completely from 20-42°C, a wider temperature range than those previously reported in yeasts. It could also completely degrade phenol at an initial concentration up to 1,000 mg/L in a minimum mineral salt medium. The optimum temperature and ...

The phenol-degrading efficiency of Pseudochrobactrum sp. was enhanced by ultraviolet (UV) irradiation. First, a bacterial strain, Pseudochrobactrum sp. XF1, was isolated from the activated sludge in a coking plant. It was subjected to mutation by UV radiation for 120 s and a mutant strain with higher phenol-degrading efficiency, Pseudochrobactrum sp. XF1-UV, was selected. The mutant strain XF1-...

Ewingella americana was grown in batch cultures using a phenol-containing M9 minimal medium. Phenol was found to be the sole source for carbon and energy. Phenol was found to inhibit the growth rate with a maximum concentration of 1100 ppm, beyond which no growth occurred. The Haldane model was used to predict the specific growth rate-concentration data. The maximum growth rates on phenol (300 ...

It is shown that bacteria Bradyrhizobium japonicum 273 were capable of degrading phenol at moderate concentrations either in a free cell culture or by immobilized cells on granulated activated carbon particles. The amount degraded was greater an preparation than culture. application constant electric field during cultivation led to enhanced biodegradation and carbon. highest removal efficiency ...

Phenol in industrial effluent is a major under-reported pollutant of concern to the aquatic ecosystem. In current study, was obtained from Eleme Petrochemical Limited, Rivers State Nigeria. Baseline analyses were conducted ascertain physico-chemical and microbiological parameters. Exogenous bacterial species isolated crude oil polluted Ogoniland. The inoculum standardized using MacFarland appro...