Innovative Electrochemical Treatment of Textile Dye Wastewater
Nasr, F., Sadik, M., El-Shafai, S. (2019). Innovative Electrochemical Treatment of Textile Dye Wastewater. EKB Journal Management System, 62(11), 2019-2032. doi: 10.21608/ejchem.2019.10576.1683
Fayza Aly Nasr; Mervat A. Sadik; Saber El-Shafai. "Innovative Electrochemical Treatment of Textile Dye Wastewater". EKB Journal Management System, 62, 11, 2019, 2019-2032. doi: 10.21608/ejchem.2019.10576.1683
Nasr, F., Sadik, M., El-Shafai, S. (2019). 'Innovative Electrochemical Treatment of Textile Dye Wastewater', EKB Journal Management System, 62(11), pp. 2019-2032. doi: 10.21608/ejchem.2019.10576.1683
Nasr, F., Sadik, M., El-Shafai, S. Innovative Electrochemical Treatment of Textile Dye Wastewater. EKB Journal Management System, 2019; 62(11): 2019-2032. doi: 10.21608/ejchem.2019.10576.1683

Innovative Electrochemical Treatment of Textile Dye Wastewater

Egyptian Journal of Chemistry
Article 5, Volume 62, Issue 11, November 2019, Page 2019-2032  XML PDF (1.72 MB)
Document Type: Original Article
DOI: 10.21608/ejchem.2019.10576.1683
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Authors
Fayza Aly Nasr1; Mervat A. Sadik2; Saber El-Shafai email orcid 3
1Water Pollution Research, National Research Center
2October High Institute for Engineering & Technology, 6 October, Egypt
3Water Pollution Research, National Research Center, Giza, Egypt
Abstract
The application of electrocoagulation (EC) for removal of Chemical Oxygen Demand (COD) and color from textile wastewater is the aim of this research. Batch wise experiments were carried out using iron electrodes to investigate effect of pH, current density and electrolysis time on percentage removals. Results show maximum removal efficiency of COD (65%) and color (97%) at 0.9 A and 0.4 A, respectively at 1.6 V and 120 minutes reaction time. Moreover, the results show that the COD removal is influenced by the pH with maximum removal at pH 8.The EC process improves wastewater biodegradability with increasing BOD/COD ratio from 29% to 34%.The results prove that the EC is effective in color and COD removal. Regarding electrical current, there was no significant difference between 0.5 A and 0.7A in color removal and so 0.5 A is selected as cost effective for the treatment process with estimated Electricity Consumption of 3.2 kWh/m3. Impact of treated wastewater on oxygen uptake rate of activated sludge biomass was investigated and the results indicated that both dye and minerals content have negative impact and therefore it is recommended to reuse treated effluent in industrial processes or consider total dissolved solids in the effluent disposal limits.
Keywords
Color removal; Electrocoagulation; Iron electrode; Textile wastewater; Treatment
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