Advanced oxidation treatment of pulp mill effluent for TOC and toxicity removals.
Pulp mill effluent was treated by different advanced oxidation processes (AOPs) consisting of UV, UV/H2O2, TiO2-assisted photo-catalysis (UV/TiO2) and UV/H2O2/TiO2 in lab-scale reactors for total organic carbon (TOC) and toxicity removals. Effects of some operating parameters such as the initial pH, oxidant and catalyst concentrations on TOC and toxicity removals were investigated. Almost every method resulted in some degree of TOC and toxicity removal from the pulp mill effluent. However, the TiO2-assisted photo-catalysis (UV/TiO2) resulted in the highest TOC and toxicity removals under alkaline conditions when compared with the other AOPs tested. Approximately, 79.6% TOC and 94% toxicity removals were obtained by the TiO2-assisted photo-catalysis (UV/TiO2) with a titanium dioxide concentration of 0.75gl(-1) at pH 11 within 60min.
Catalkaya
Ebru Cokay
EC
Department of Environmental Engineering, Dokuz Eylul University, Buca, Izmir, Turkey.
Kargi
Fikret
F
D002244:Carbon / Q000737:chemistry / Q000302:isolation & purification / Q000528:radiation effects; D002384:Catalysis; D006861:Hydrogen Peroxide / Q000737:chemistry; D006863:Hydrogen-Ion Concentration; D007220:Industrial Waste; D009930:Organic Chemicals / Q000737:chemistry / Q000302:isolation & purification / Q000528:radiation effects; D010084:Oxidation-Reduction; D010209:Paper; D010777:Photochemistry; D013997:Time Factors; D014025:Titanium / Q000737:chemistry; D014466:Ultraviolet Rays; D014865:Waste Disposal, Fluid / Q000379:methods*; D014874:Water Pollutants, Chemical / Q000737:chemistry / Q000302:isolation & purification / Q000528:radiation effects; D018508:Water Purification / Q000379:methods*
D007220:Industrial Waste; D009930:Organic Chemicals; D014874:Water Pollutants, Chemical; C009495:titanium dioxide; D002244:Carbon; D006861:Hydrogen Peroxide; D014025:Titanium