Background Phenols are chemical compounds which are included in the high priority of pollutants by environmental protection agency (USEPA). The presence of high concentrations of phenols in wastewaters like oil refineries, petrochemical plants, olive oil, pesticide production and oil field operations contain high soluble solids (TDS) and in an olive oil plant, wastewater is acidic, high salty a...

Phenol is one of the main pollutants that have a serious impact on environment and can even be very critical to human health. The biodegradation phenol considered an increasingly important pollution control process. In this study, degradation by Bacillus simplex was investigated for first time under different growth conditions. Six initial concentrations were used as primary substrate. Culture ...

In the present work, kinetics of the biodegradation of benzene, toluene and phenol by using a pure culture of Pseudomonas putida (MTCC 1194) was determined by measuring the specific growth rate and degradation rate with substrate concentration as a function of time in a batch reactor. In general, the degradation rate of benzene, toluene and phenol increased with the increase in the initial subs...

The abundance, diversity, and distribution of biodegradation genes (BDGs) and phenol degradation genes (PDGs) in activated sludge (AS) from two wastewater treatment plants (WWTPs) at different sampling times were assessed by metagenomic analysis using a total of 15 datasets derived from Illumina high-throughput sequencing and BLAST comparisons to BDGs and PDGs databases. The results showed that...

The chemical moreover petroleum industries are responsible for the production of a diverse range organic contaminants that extremely hazardous. As result, these have contributed to accumulation damaging impacts on surrounding environment. These companies' waste water typically contains aromatic chemicals, which notoriously difficult degrade through natural processes and, as found be pervasive i...

Repeated treatment with fenamiphos (ethyl 4-methylthio-m-tolyl isopropylphosphoramidate) resulted in enhanced biodegradation of this nematicide in two United Kingdom soils with a high pH (>/= 7.7). In contrast, degradation of fenamiphos was slow in three acidic United Kingdom soils (pH 4.7 to 6.7), and repeated treatments did not result in enhanced biodegradation. Rapid degradation of fenamipho...

Since they often inhibit abundant bacteriological populations in municipal wastewater treatment plants, alternative treatment methods should be investigated – including advanced oxidation processes. This paper studies the degradation of three representatives of phenolic compounds using the Fenton system in the presence of chlorides and sulfates: phenol, 2-chlorophenol and 2-nitrophenol. The pre...

The biodegradation kinetics of 4-chlorophenol (4-CP) and phenol microbial growth Pseudomonas putida (P. putida) cells were estimated in batch biofilm reactors. kinetic parameters on determined using the Haldane formula. maximum specific rate P. phenol, half-saturation constant self-inhibition 0.512 h−1, 78.38 mg/L 228.5 mg/L, respectively. yield (YP) was 0.618 mg phenol/mg cell. experimental re...