The use of hydroxyl-radical-generating systems for the treatment of olive mill wastewaters.
Three hydroxyl-radical producing biomimetic systems, composed of CuII, hydrogen peroxide and pyridine, glucaric or succinic acid, were able to perform decolorization of olive mill wastewaters (OMW) >85 % within 3 d combined with a significant removal of total phenols (>75 %). The systems consisting of 50 mmol/L succinic acid, 5-10 mmol/L CuSO4 and 100 mmol/L H2O2 were the most effective at OMW treatment, and led to the reduction of phenol contents to <1 % along with high decolorization (>88 %) and acceptable values of chemical oxygen demand.
Baldrian
P
P
Institute of Microbiology, Academy of Sciences of the Czech Republic, Prague, Czechia. baldrian@biomed.cas.cz
Zervakis
G I
GI
Merhautová
V
V
Ntougias
S
S
Ehaliotis
C
C
Nerud
F
F
D001419:Bacteria / Q000378:metabolism; D001673:Biodegradation, Environmental; D032701:Biomimetics / Q000379:methods*; D003300:Copper; D005609:Free Radicals / Q000494:pharmacology*; D006861:Hydrogen Peroxide / Q000737:chemistry; D017665:Hydroxyl Radical / Q000737:chemistry*; D007220:Industrial Waste; D007501:Iron / Q000737:chemistry; D000069463:Olive Oil; D010084:Oxidation-Reduction; D010636:Phenols / Q000737:chemistry; D010860:Pigments, Biological / Q000737:chemistry; D010938:Plant Oils; D014865:Waste Disposal, Fluid / Q000379:methods*
C045076:Fenton's reagent; D005609:Free Radicals; D007220:Industrial Waste; D000069463:Olive Oil; D010636:Phenols; D010860:Pigments, Biological; D010938:Plant Oils; D017665:Hydroxyl Radical; D003300:Copper; D006861:Hydrogen Peroxide; D007501:Iron