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Treatment of pulp and paper industry bleaching effluent by electrocoagulant process.
- Source :
-
Journal of hazardous materials [J Hazard Mater] 2011 Feb 28; Vol. 186 (2-3), pp. 1495-502. Date of Electronic Publication: 2010 Dec 14. - Publication Year :
- 2011
-
Abstract
- The experiments were carried out in an electrocoagulation reactor with aluminum as sacrificial electrodes. The influence of electrolysis time, current density, pH, NaCl concentration, rotational speed of the stirrer and electrode distance on reduction of color, COD and BOD were studied in detail. From the experimental results, 15 mA/cm(2) current density, pH of 7, 1 g/l NaCl, 100 rpm, 28°C temperature and 3 cm electrode distance were found to be optimum for maximum reduction of color, COD and BOD. The reduction of color, COD and BOD under the optimum condition were found to be 94%, 90% and 87% respectively. The electrode energy consumption was calculated and found to be varied from 10.1 to 12.9 kWh/m(3) depending on the operating conditions. Under optimal operating condition such as 15 mA/cm(2) current density, pH of 7, 1 g/l NaCl, 100 rpm, 28°C temperature and 3 cm electrode distance, the operating cost was found to be 1.56 US $/m(3). The experimental results proved that the electrocoagulation is a suitable method for treating bleaching plant effluents for reuse.<br /> (Copyright © 2010 Elsevier B.V. All rights reserved.)
- Subjects :
- Algorithms
Biological Oxygen Demand Analysis
Color
Conservation of Energy Resources
Costs and Cost Analysis
Electricity
Electrochemistry
Electrodes
Electrolytes chemistry
Hydrogen-Ion Concentration
Industrial Waste economics
Oxygen chemistry
Sodium Chloride chemistry
Waste Disposal, Fluid economics
Industrial Waste analysis
Paper
Waste Disposal, Fluid methods
Subjects
Details
- Language :
- English
- ISSN :
- 1873-3336
- Volume :
- 186
- Issue :
- 2-3
- Database :
- MEDLINE
- Journal :
- Journal of hazardous materials
- Publication Type :
- Academic Journal
- Accession number :
- 21227578
- Full Text :
- https://doi.org/10.1016/j.jhazmat.2010.12.028