نتایج جستجو برای: phenol biodegradation
تعداد نتایج: 23742 فیلتر نتایج به سال:
The biodegradation of phenol by Pseudomonas aeruginosa (NCIM 2074) was carried out in a batch system and the optimum conditions were determined. At an optimum pH 7, temperature 32°C, agitation speed 160 rpm, carbon source (glucose) 0.5 g/l, nitrogen source (ammonium chloride) 0.2 g/l, metal ion concentration (Zn) 0.02 g/l the percentage of phenol degradation was 80.45%. Phenol had a strong inhi...
An airlift inner-loop bioreactor packed with honeycomb-like ceramic as the carrier was developed and its capacity to immobilize microorganism was studied through adding bacteria, Achromobacter sp., capable of degrading 2,4-dichlorophenol (2,4-DCP), directly to the reactor under continuous operation. Effects of phenol in the feed with 2,4-DCP on 2,4-DCP removal were investigated under fed-batch ...
Phenol is a widespread pollutant and a model molecule to study the biodegradation of monoaromatic compounds. After a first oxidation step leading to catechol in mesophilic and thermophilic microorganisms, two main routes have been identified depending on the cleavage of the aromatic ring: ortho involving a catechol 1,2 dioxygenase (C12D) and meta involving a catechol 2,3 dioxygenase (C23D). Our...
Laccase-catalysed oxidation of the lignin-related phenol vanillyl glycol results in the initial formation of dimers and subsequent polymerization. The polymerization is accompanied by a liberation of methanol corresponding to 15-20% demethylation. Visible spectra together with reduction experiments suggest the simultaneous formation of o-quinones. The participation of quinone formation in the p...
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