This work studies the use of biological and combined biological/enzymatic treatments in phenol degradation. The systems studied were conventional batch aerobic biological followed or preceded by enzymatic treatment. Tyrosinase extracted from the mushroom Agaricus bispora was employed. Biological treatment efficiently degraded effluents containing up to 420 mg.L of phenol, removing 97% of the CO...

During batch growth of Ralstonia eutropha (previously named Alcaligenes eutrophus) on phenol in the presence of acetate, acetate was found to be the preferred substrate; this organic acid was rapidly metabolized, and the specific rate of phenol consumption was considerably decreased, although phenol consumption was not abolished. This decrease corresponded to a drop in phenol hydroxylase and ca...

Phenol tolerance and degradation using spent mycelium substrate of Hypsizygus ulmarius showed that ligninolytic media with carbon or nitrogen limitation gave highest growth (26.27sq.cm), while limitation of both nutrients reduced it to 8.1sq.cm. 7.68sq.cm was seen in non-ligninolytic media; simultaneous nutrient increase gave 1.16sq.cm. Tolerance to phenol was best in ligninolytic media with ca...

Eucalyptus extract-based pharmaceutical products are widely used because of their medicinal properties and rich content secondary metabolites, mainly phenolic compounds. This study aimed to maximise the extraction yield these compounds reduce duration by using a pulsed electric field (PEF) level 6 kV/cm. The pulse width (T), number pulses (n), solvent concentration [C] were analysed. Several et...

Dehydrogenative phenol-arene cross-coupling by direct anodic oxidation is a promising alternative to reductive cross-coupling, especially for construction of smaller molecules. The reaction pathway via phenoxyl radicals allows unusual regioselectivity. Nevertheless, the numerous electrolysis parameters pose challenge optimization, as they determine yield and selectivity reaction. Using design e...

in this study two identical anaerobic completely mixed fluidized bed reactors with gac and sand media were employed for cod & phenol removal. at loading rate of 1.6 g phenol l-1d-1, the efficiency of phenol removal in gac & sand reactors were 97.7% & 74%, respectively. at high loading rate of phenol (6.09 g phenol i: 1d1) the efficiency of phenol removal in gac reactor was better than 95%. in g...

For accurate quantification of DNA and RNA from environmental samples, yield loss during nucleic acid purification has to be minimized. Quantitative PCR (qPCR) and reverse transcription (RT)-qPCR require a trade-off between maximizing yield and removing inhibitors. We compared DNA and RNA yield and suitability for quantitative SYBR Green PCR and RT-PCR using the UltraClean and PowerSoil extract...

In this study, three extraction methods of polysaccharides in Purslane were compared and analyzed, and the best method was ascertained. Purslane polysaccharides were extracted using water, ultrasonic and microwave. By the results of single factor experiments and orthogonal experiments, the optimal extracting conditions were selected and then the best extraction method was determined. In order t...

Among the most perilous factors affecting tomato plant functioning and yield is salinity. The efficacy of halotolerant marine macroalgal extract Chaetomorpha antennina (Seaweed Extract—SWE) in mitigating toxic effects salt stress (150 mM) plants to promote enhance both functionality was tested. It evident that undesirably affected germination growth terms quality quantity. Treatment with SWE im...

This paper describes the carbonization behavior of phenol-formaldehyde resin (PF) blended in the presence of simple organic substances of m-phthalic acid (PA), trimesic acid (TMA) and phloroglucinol (PG). The weight loss and heat flow were monitored in order to study their carbonization behavior by thermogravimetric analysis (TG) and differential scanning calorimetry (DSC), respectively. These ...