Volume 1, Issue 1 (2025)
eesd 2025, 1(1): 0-0 |
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rezaee A. حذف کروم شش ظرفیتی از محیطهای آبی با استفاده از فرآیند الکتروکوآگولاسیون. eesd 2025; 1 (1)
URL: http://https://journals.modares.ac.ir/index.php?sid=35&slc_lang=fa/article-35-80316-en.html
URL: http://https://journals.modares.ac.ir/index.php?sid=35&slc_lang=fa/article-35-80316-en.html
دانشیار دانشگاه تربیت مدرس , rezaee@modares.ac.ir
Abstract: (63 Views)
The purpose of this study was to investigate the effect of thioglycolic acid on the coagulation process used in the removal of hexavalent chromium. Experiments were conducted in a 250-ml batch reactor. Steel electrodes with monoplore arrangement were used as anode and cathode (× 1 × 4 × 5 × 5 cm) for electrical coagulation. The effect of effective operating indicators such as pH (3-9), concentrations of tioglycolic acid (0.0.03-0.1 ml), inductive flow rate (25- 200 mA), initial concentrations of chromium 25 mg / L) and the amount of supporting electrolyte (25-25 mg / L) were evaluated. No significant difference was found between the removal efficiency of chromium at different pH values by addition of thioglycolic acid, and in all cases, the removal efficiency was 100%. However, the initial pH 3 was chosen as optimal pH due to the final pH 7 after the reaction and no need to neutralize. With increasing concentration of thioglycolic acid, the removal efficiency of chromium increased by 30 minutes. In the concentration of 0.05 tioglycolic acid, less sludge was produced. The use of 200 mA current intensity showed the highest removal efficiency of chromium. By reducing the density of the flow, we have a decrease in the removal efficiency. Based on the results obtained from this study, it can be concluded that the use of Tioglucic Acid in the coagulation process can have a significant effect on the removal of hexavalent chromium
Article Type: Original Research |
Subject:
Other subjects related to environmental engineering and sustainable development.
Received: 2025/04/12 | Accepted: 2025/05/31 | Published: 2025/05/31
Received: 2025/04/12 | Accepted: 2025/05/31 | Published: 2025/05/31
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