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Phenol removal from industrial waste waters by horseradish (Cochlearia armoracia L.) peroxidase
2003
Nedic, L. (Strucna skola "Sveti Sava", Bujanovac (Serbia and Montenegro)) | Stanisavljevic, M.
This paper presents a process for phenol removal comprising a reaction step in which phenol is polymerized in the presence of an enzyme horseradish peroxidase. A crude preparation from horseradish roots was used as a low purity source of the enzyme. The technical feasibility of the process was studied using 1 to 10 mM synthetic phenol solutions. Experimental results showed the potential of the proposed technique. A phenol conversion higher than 90% was observed at the polymerization process.
Mostrar más [+] Menos [-]Removal of phenol from water by direct ozonization
2005
Ostojic, D.R.(Univerzitet u Beogradu, Beograd (Serbia and Montenegro). Hemijski fakultet) | bradovic, B.M. | Manojlovic, D. E-mail:manojlo@chem.bg.ac.yu | Kuraica, M.M. | Krsmanovic, V.D. | Puric, J.
New type of ozone generator based on barrier discharge was applied for removal of phenol from water under laboratory conditions. Three water samples with initial concentration of phenol of 6.0 mg/L were studied. In the experiment with distilled water containing phenol, 98.9% of phenol was removed (93.3% during the ozonization). Under similar conditions two different water samples from river Danube were used. In these cases, 76.7% and 80.0% of phenol were removed, respectively. In all experiments, water samples containing phenol passed only once through the ozonizer. It is reasonable to assume that better purification could be obtained with several passes of water through ozonizer and/or by optimization of the process (adjusting concentration of ozone, ozonization time, water flow, etc.).
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