Feasibility of electro coagulation using iron electrodes in treating paper industry wastewater

The paper-making process generates a large quantum of wastewater (ww); due to its squat biodegradability index, electro-coagulation (EC) method of treatment is gaining the significance as compared to biochemical and other conventional techniques. Electro-oxidation of anodes produces the coagulant, a...

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Bibliographic Details
Published in:Sustainable water resources management 2020-08, Vol.6 (4), Article 70
Main Authors: Hugar, Guruprasad M., Marol, Chethan Kumar
Format: Article
Language:English
Subjects:
Anodes
Anodizing
Biodegradability
Biodegradation
Chemical oxygen demand
Coagulants
Coagulation
Development Economics
Earth and Environmental Science
Earth Sciences
Electrodes
Empirical analysis
Feasibility studies
Hydrogeology
Hydrology/Water Resources
Iron
Original Article
Oxidation
Paper industry wastes
Papermaking
pH effects
Pulp & paper industry
Pulp mill effluents
Regression analysis
Response surface methodology
Sustainable Development
Total organic carbon
Turbidity
Variance analysis
Wastewater
Wastewater treatment
Water Policy/Water Governance/Water Management
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Summary:The paper-making process generates a large quantum of wastewater (ww); due to its squat biodegradability index, electro-coagulation (EC) method of treatment is gaining the significance as compared to biochemical and other conventional techniques. Electro-oxidation of anodes produces the coagulant, and eases the treatment with no external coagulant usage. This study is aimed in determining the efficacy of EC using iron electrodes in treating paper industry ww. The combined influence of treatment time ( T ), pH and applied voltage ( V ) is examined by conducting a series of experiments of ww treatment designed based on the response surface method (RSM); subsequently, the influence on TDS, turbidity, TOC and COD was also assessed individually. The respective experimental outcomes have been statically validated for their effectiveness by carrying the regression, parametric tests, analysis of variance (ANOVA), distribution and residual analysis. The pilot study effectively reduced the TDS, turbidity, TOC and COD, respectively, to 51%, 65% 68%, and 70% at the optimum pH 8, T −60 min. and 20 V, with the individual regressions ( R 2 ) of 0.95, 0.87, 0.92 and 0.78 with the P value 
ISSN:2363-5037
2363-5045
DOI:10.1007/s40899-020-00433-4