Decolorization and Organic Removal from Palm Oil Mill Effluent by Fenton's Process

作者：Kongnoo Aroon; Suksaroj Thunwadee; Intharapat Punyanich; Promtong Thanakrit; Suksaroj Chaisri^*

来源：Environmental Engineering Science, 2012, 29(9): 855-859.

DOI：10.1089/ees.2011.0181

• oxidation
• decolorization
• kinetics
• Fenton
• palm oil mill effluent

Decolorization and organics removal in palm oil mill effluent (POME) were investigated with the Fenton process. Decolorization efficiency obtained was 66.5% at 5 min and >90.0% at 30 min of reaction time. The process removed 82.0% of soluble chemical oxygen demand at 1 h of reaction time with optimized conditions: [H2O2] = 50 mM, [Fe2+] = 1.0 mM, and pH = 3.0 +/- 0.2. The kinetics rate constants (k) of decolorization and dissolved organic carbon removal were found at 6.20 x 10(-2) min(-1) and 2.19 x 10(-4) (mg/L)(-1) min(-1), respectively. However, the UV irradiation did not obviously enhance the decolorization and organic removal of POME. Humic and fulvic acid-like substances were identified at Ex/Em of 315/415 and 260/445 nm, respectively. By fluorescence excitation-emission matrix (FEEM), spectroscopy could create colors in POME. Reduction of FEEM intensity was 98.61%, which was related to the decolorization.

• 出版日期2012-9