Evaluation of Direct and Alternating Current Electrochemical Process using Aluminum and Zinc Electrodes in the Nitrate Removal from Aqueous Solutions
Introduction and purpose: Nitrate is one of the most important pollutants in surface and groundwater. The present study aimed to evaluate the effect of different parameters on the performance of the electrical coagulation process in the removal of nitrate from contaminated water. Methods: This study...
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Mazandaran University of Medical Sciences
2022-04-01
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| Series: | تحقیقات سلامت در جامعه |
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| Online Access: | http://jhc.mazums.ac.ir/article-1-688-en.html |
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| author | Hossein Masoumbeigi Foad Gholami Seid ali Yahyapor Ghader Ghanizafeh |
| author_facet | Hossein Masoumbeigi Foad Gholami Seid ali Yahyapor Ghader Ghanizafeh |
| author_sort | Hossein Masoumbeigi |
| collection | DOAJ |
| description | Introduction and purpose: Nitrate is one of the most important pollutants in surface and groundwater. The present study aimed to evaluate the effect of different parameters on the performance of the electrical coagulation process in the removal of nitrate from contaminated water.
Methods: This study was conducted based on an experimental design and the statistical community was urban water. A cylindrical batch reactor with aluminum and zinc electrodes (monopolar arrangement) was used to remove 100 mg/L nitrates. The experiments were performed three times in direct and alternating currents using standard methods. Factors of pH, contact time, and weight of electrodes were evaluated, and the results were reported in tables and graphs.
Results: Nitrate removal efficiency (87.4%) was higher in direct current, as compared to that in alternating current (39.1%). The highest nitrate removal efficiency of 87.4% was obtained in direct current, in comparison with 61% for alternating current. As the contact time increased, the pH of the solution increased in two currents, from 7 to 11.21 and 8.47, respectively. Total dissolved solids (TDS) at optimal conditions in alternating and direct current were 79 and 126 mg/L, respectively. After 30 min of settling, the produced sludge was measured as 17.66 and 280 mL/L in direct and alternating current, respectively. The weight of the anode electrode had the greatest decrease in direct current.
Conclusion: The results of this study pointed out that the process of electrical coagulation could reduce the concentration of nitrate to less than the standard. Nitrate removal with the direct current was performed with less energy consumption and cost than alternating current. As a result, the use of optimal conditions increases the process efficiency in the electrochemical removal of nitrate. |
| first_indexed | 2024-04-11T04:10:19Z |
| format | Article |
| id | doaj.art-0763130141504c11b3a2ded3152105f1 |
| institution | Directory Open Access Journal |
| issn | 2423-6772 2423-6764 |
| language | fas |
| last_indexed | 2024-04-11T04:10:19Z |
| publishDate | 2022-04-01 |
| publisher | Mazandaran University of Medical Sciences |
| record_format | Article |
| series | تحقیقات سلامت در جامعه |
| spelling | doaj.art-0763130141504c11b3a2ded3152105f12023-01-01T06:28:01ZfasMazandaran University of Medical Sciencesتحقیقات سلامت در جامعه2423-67722423-67642022-04-01812738Evaluation of Direct and Alternating Current Electrochemical Process using Aluminum and Zinc Electrodes in the Nitrate Removal from Aqueous SolutionsHossein Masoumbeigi0Foad Gholami1Seid ali Yahyapor2Ghader Ghanizafeh3 Health Research Center, Life Style Institute, Baqiyatallah University of Medical Sciences, Tehran, Iran Environmental Research Center (ERC), Department of Applied Chemistry, Faculty of Chemistry, Razi University, Kermanshah, Iran. Department of Environmental Health Engineering, School of Public Health, Baqiyatallah University of Medical Sciences, Tehran, Iran Health Management Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran Introduction and purpose: Nitrate is one of the most important pollutants in surface and groundwater. The present study aimed to evaluate the effect of different parameters on the performance of the electrical coagulation process in the removal of nitrate from contaminated water. Methods: This study was conducted based on an experimental design and the statistical community was urban water. A cylindrical batch reactor with aluminum and zinc electrodes (monopolar arrangement) was used to remove 100 mg/L nitrates. The experiments were performed three times in direct and alternating currents using standard methods. Factors of pH, contact time, and weight of electrodes were evaluated, and the results were reported in tables and graphs. Results: Nitrate removal efficiency (87.4%) was higher in direct current, as compared to that in alternating current (39.1%). The highest nitrate removal efficiency of 87.4% was obtained in direct current, in comparison with 61% for alternating current. As the contact time increased, the pH of the solution increased in two currents, from 7 to 11.21 and 8.47, respectively. Total dissolved solids (TDS) at optimal conditions in alternating and direct current were 79 and 126 mg/L, respectively. After 30 min of settling, the produced sludge was measured as 17.66 and 280 mL/L in direct and alternating current, respectively. The weight of the anode electrode had the greatest decrease in direct current. Conclusion: The results of this study pointed out that the process of electrical coagulation could reduce the concentration of nitrate to less than the standard. Nitrate removal with the direct current was performed with less energy consumption and cost than alternating current. As a result, the use of optimal conditions increases the process efficiency in the electrochemical removal of nitrate.http://jhc.mazums.ac.ir/article-1-688-en.htmlaqueous solutionsdirect and alternating currentelectrical coagulationnitrate removalwater treatment |
| spellingShingle | Hossein Masoumbeigi Foad Gholami Seid ali Yahyapor Ghader Ghanizafeh Evaluation of Direct and Alternating Current Electrochemical Process using Aluminum and Zinc Electrodes in the Nitrate Removal from Aqueous Solutions تحقیقات سلامت در جامعه aqueous solutions direct and alternating current electrical coagulation nitrate removal water treatment |
| title | Evaluation of Direct and Alternating Current Electrochemical Process using Aluminum and Zinc Electrodes in the Nitrate Removal from Aqueous Solutions |
| title_full | Evaluation of Direct and Alternating Current Electrochemical Process using Aluminum and Zinc Electrodes in the Nitrate Removal from Aqueous Solutions |
| title_fullStr | Evaluation of Direct and Alternating Current Electrochemical Process using Aluminum and Zinc Electrodes in the Nitrate Removal from Aqueous Solutions |
| title_full_unstemmed | Evaluation of Direct and Alternating Current Electrochemical Process using Aluminum and Zinc Electrodes in the Nitrate Removal from Aqueous Solutions |
| title_short | Evaluation of Direct and Alternating Current Electrochemical Process using Aluminum and Zinc Electrodes in the Nitrate Removal from Aqueous Solutions |
| title_sort | evaluation of direct and alternating current electrochemical process using aluminum and zinc electrodes in the nitrate removal from aqueous solutions |
| topic | aqueous solutions direct and alternating current electrical coagulation nitrate removal water treatment |
| url | http://jhc.mazums.ac.ir/article-1-688-en.html |
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