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Fenton’s Treatment of Pulp and Paper Mill Effluent
Abstract The pulp and paper industry produces large quantities of bleaching effluents that are highly colored and contain large concentrations of organic matter. Most of these contaminants mainly lignin and organic matter are difficult to eliminate by conventional wastewater treatment processes. Advanced oxidation processes (AOPs) are used to convert non-biodegradable organic matter to harmless substances. AOPs depend on the production of hydroxyl radicals (.OH) with a redox potential of 2.8 V. These radicals undergo various oxidation processes by reacting with oxygen and convert the organics to CO2 and H2O. The waste effluent for the present study was collected from bleaching process of pulp and paper industry located in Karnataka. Batch experiments were carried out on the effluent using Fenton’s oxidation process. Various doses of FeSO4·7H2O and H2O2 30% W/V were used. All reactions were carried out in triplicate under atmospheric pressure in a dark place, to avoid direct attack of sunlight, with continuous shaking in a water bath maintained at 130 rpm at 30 °C. Lignin concentration was measured using spectrometric procedure at a wavelength of 700 nm. The optimum pH value of 4 was observed. The optimum condition for the maximum removal of COD and lignin was pH 4, H2O2 dosage 2 mg/mL, FeSO4.7H2O 1.8 mg/mL and reaction time 30 min wherein COD removal efficiencies of up to 88% and lignin removal efficiencies of up to 92% were achieved. Hence, Fenton’s oxidation seems to be an efficient and economical treatment technique for pulp and paper mill effluent.
Fenton’s Treatment of Pulp and Paper Mill Effluent
Abstract The pulp and paper industry produces large quantities of bleaching effluents that are highly colored and contain large concentrations of organic matter. Most of these contaminants mainly lignin and organic matter are difficult to eliminate by conventional wastewater treatment processes. Advanced oxidation processes (AOPs) are used to convert non-biodegradable organic matter to harmless substances. AOPs depend on the production of hydroxyl radicals (.OH) with a redox potential of 2.8 V. These radicals undergo various oxidation processes by reacting with oxygen and convert the organics to CO2 and H2O. The waste effluent for the present study was collected from bleaching process of pulp and paper industry located in Karnataka. Batch experiments were carried out on the effluent using Fenton’s oxidation process. Various doses of FeSO4·7H2O and H2O2 30% W/V were used. All reactions were carried out in triplicate under atmospheric pressure in a dark place, to avoid direct attack of sunlight, with continuous shaking in a water bath maintained at 130 rpm at 30 °C. Lignin concentration was measured using spectrometric procedure at a wavelength of 700 nm. The optimum pH value of 4 was observed. The optimum condition for the maximum removal of COD and lignin was pH 4, H2O2 dosage 2 mg/mL, FeSO4.7H2O 1.8 mg/mL and reaction time 30 min wherein COD removal efficiencies of up to 88% and lignin removal efficiencies of up to 92% were achieved. Hence, Fenton’s oxidation seems to be an efficient and economical treatment technique for pulp and paper mill effluent.
Fenton’s Treatment of Pulp and Paper Mill Effluent
Gautham, Sumit Kumar (author) / Dhaneesh, V. V. (author) / Manu, Basavaraju (author)
2018-01-01
6 pages
Article/Chapter (Book)
Electronic Resource
English
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