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:: Volume 9, Issue 2 (Spring 2022) ::
Environ. Health Eng. Manag. 2022, 9(2): 177-188 Back to browse issues page
Comparison of sono-direct and sono-alternate current electrocoagulation processes for removal of color and turbidity from domestic wastewater
Lelisa Regea Mengistu , Zerihun Asmelash Samue, Chali Dereje Kitila , Abreham Bekele Bayu
Corresponding author: Jimma Institute of Technology, School of Chemical Engineering, Jimma University, Jimma, Ethiopia , abreham.bekele@ju.edu.et
Abstract:   (420 Views)
Background: Nowadays there is a problem related to wastewater handling which is released from different activities. Electrocoagulation has been a dominant treatment method for wastewater treatment. There are different forms of electrocoagulation methods for wastewater treatment. Nevertheless, there was no comparison made for the removal efficiency of the sono-alternate current (SAC), alternate current (AC), sono-direct current (SDC), and direct current (DC) electrocoagulation process.
Methods: The efficiency of electrocoagulation method was compared for removal of color and turbidity from Jimma University domestic wastewater. Batch reactor DC/AC electrocoagulation cell was used to determine the removal efficiency. During the comparison, the response surface methodology (RSM) was used to analyze and optimize the data taken from the laboratory. In addition, ANOVA was used to analyze the interaction effects of different parameters.
Results: The removal of color and turbidity from domestic wastewater was about 97.53% and 95.28% respectively, using direct current electrocoagulation (DCE). For alternate current electrocoagulation (ACE), the removal of color and turbidity was 98.35% and 96.12%, respectively. The removal of color and turbidity for sono-DCE (SDCE) was obtained to be 98.55% and 98.27%, respectively and for sono- ACE (SACE), the removal of color and turbidity was 99.95% and 99.76%, respectively at the optimum experimental conditions of chemical oxygen demand (COD) 960 g/L, initial wastewater pH of 6.8, the current density of 0.4 A/dm2, inter-terminal spacing of 1 cm, and the association of electrode of Al-Al.
Conclusion: According to the findings of this study, it can be concluded that, the SAC electrocoagulation method is the best and promising technique compared with all other electrocoagulation methods.
Keywords: Alternating current, Direct current, Wastewater, Sono-alternate, Sono-direct, Turbidity, and color removal
Full-Text [PDF 783 kb]   (249 Downloads)    
Type of Study: Original Article | Subject: General
Received: 2022/06/6 | Accepted: 2022/03/26 | Published: 2022/06/22
Supplementary file [PDF 197 KB]  (17 Download)
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Regea Mengistu L, Asmelash Samue Z, Dereje Kitila C, Bekele Bayu A. Comparison of sono-direct and sono-alternate current electrocoagulation processes for removal of color and turbidity from domestic wastewater. Environ. Health Eng. Manag.. 2022; 9 (2) :177-188
URL: http://ehemj.com/article-1-952-en.html


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Volume 9, Issue 2 (Spring 2022) Back to browse issues page
مجله مدیریت و مهندسی بهداشت محیط Environmental Health Engineering And Management Journal
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