Efficient Chemical Coagulation-Electrocoagulation-Membrane Filtration Integrated Systems for Baker's Yeast Wastewater Treatment: Experimental and Economic Evaluation
The present study provides technical and economic comparisons of electrocoagulation (EC), chemical coagulation (CC), integrated EC-CC, and combinations of these techniques with ultrafiltration (UF) and nanofiltration (NF) systems based on baker's yeast wastewater treatment. Key parameters such...
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| Format: | Article |
| Language: | English |
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Elsevier
2022-09-01
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| Series: | Cleaner Chemical Engineering |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2772782322000304 |
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| author | Hossein Nouri Alavijeh Morteza Sadeghi Mohammad Reza Khavari Kashani Ahmad Moheb |
| author_facet | Hossein Nouri Alavijeh Morteza Sadeghi Mohammad Reza Khavari Kashani Ahmad Moheb |
| author_sort | Hossein Nouri Alavijeh |
| collection | DOAJ |
| description | The present study provides technical and economic comparisons of electrocoagulation (EC), chemical coagulation (CC), integrated EC-CC, and combinations of these techniques with ultrafiltration (UF) and nanofiltration (NF) systems based on baker's yeast wastewater treatment. Key parameters such as initial pH, coagulant dosage, and stirring speed were optimized for both EC and CC methods to achieve higher removal efficiencies at lower operating costs. Evaluating EC and CC indicates EC obtained better performance by removing 77.64% and 97.49% of COD and turbidity, respectively, but higher operating costs for treating baker's yeast wastewater. CC with operating costs of 0.737$/m3 and 1.427 $/m3 using lime and polyaluminum chloride (PACl), respectively, is more cost-effective than EC with total operating costs of 3.526 $/m3. This study was the first to compare the capital costs of EC and CC, and it was revealed that CC still required less investment than EC. The combination of EC and CC methods was studied for the first time on baker's yeast wastewater. The results showed that combining CC and EC improves COD removal efficiency by 11.2% and 16.1% when compared to single EC and single CC processes, respectively. Two types of hollow fiber membranes made of polypropylene (PP) and polyvinylidene fluoride (PVDF) for the UF process and a polyamide spiral membrane for the NF system were employed in membrane filtration integrated systems. The combination of the EC-CC system with the UF and NF systems resulted in the highest COD removal efficiency, which was around 99.7% for the EC-CC(PACl)-PVDF-NF system. |
| first_indexed | 2024-04-12T23:21:38Z |
| format | Article |
| id | doaj.art-9b2cc619e4114c7593e426de87bdb9af |
| institution | Directory Open Access Journal |
| issn | 2772-7823 |
| language | English |
| last_indexed | 2024-04-12T23:21:38Z |
| publishDate | 2022-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Cleaner Chemical Engineering |
| spelling | doaj.art-9b2cc619e4114c7593e426de87bdb9af2022-12-22T03:12:31ZengElsevierCleaner Chemical Engineering2772-78232022-09-013100032Efficient Chemical Coagulation-Electrocoagulation-Membrane Filtration Integrated Systems for Baker's Yeast Wastewater Treatment: Experimental and Economic EvaluationHossein Nouri Alavijeh0Morteza Sadeghi1Mohammad Reza Khavari Kashani2Ahmad Moheb3Department of Chemical Engineering, Isfahan University of Technology, Isfahan 84156-83111, Iran; Department of Chemical Engineering, University of Virginia, Charlottesville, Virginia 22904-4741, United StatesDepartment of Chemical Engineering, Isfahan University of Technology, Isfahan 84156-83111, Iran; Corresponding author. Department of Chemical Engineering, Isfahan University of Technology, Isfahan 84156-83111, IranDepartment of Chemical Engineering, Isfahan University of Technology, Isfahan 84156-83111, IranDepartment of Chemical Engineering, Isfahan University of Technology, Isfahan 84156-83111, IranThe present study provides technical and economic comparisons of electrocoagulation (EC), chemical coagulation (CC), integrated EC-CC, and combinations of these techniques with ultrafiltration (UF) and nanofiltration (NF) systems based on baker's yeast wastewater treatment. Key parameters such as initial pH, coagulant dosage, and stirring speed were optimized for both EC and CC methods to achieve higher removal efficiencies at lower operating costs. Evaluating EC and CC indicates EC obtained better performance by removing 77.64% and 97.49% of COD and turbidity, respectively, but higher operating costs for treating baker's yeast wastewater. CC with operating costs of 0.737$/m3 and 1.427 $/m3 using lime and polyaluminum chloride (PACl), respectively, is more cost-effective than EC with total operating costs of 3.526 $/m3. This study was the first to compare the capital costs of EC and CC, and it was revealed that CC still required less investment than EC. The combination of EC and CC methods was studied for the first time on baker's yeast wastewater. The results showed that combining CC and EC improves COD removal efficiency by 11.2% and 16.1% when compared to single EC and single CC processes, respectively. Two types of hollow fiber membranes made of polypropylene (PP) and polyvinylidene fluoride (PVDF) for the UF process and a polyamide spiral membrane for the NF system were employed in membrane filtration integrated systems. The combination of the EC-CC system with the UF and NF systems resulted in the highest COD removal efficiency, which was around 99.7% for the EC-CC(PACl)-PVDF-NF system.http://www.sciencedirect.com/science/article/pii/S2772782322000304Wastewater treatmentelectrocoagulationchemical coagulationoperating costmembrane filtrationbaker's yeast wastewater |
| spellingShingle | Hossein Nouri Alavijeh Morteza Sadeghi Mohammad Reza Khavari Kashani Ahmad Moheb Efficient Chemical Coagulation-Electrocoagulation-Membrane Filtration Integrated Systems for Baker's Yeast Wastewater Treatment: Experimental and Economic Evaluation Cleaner Chemical Engineering Wastewater treatment electrocoagulation chemical coagulation operating cost membrane filtration baker's yeast wastewater |
| title | Efficient Chemical Coagulation-Electrocoagulation-Membrane Filtration Integrated Systems for Baker's Yeast Wastewater Treatment: Experimental and Economic Evaluation |
| title_full | Efficient Chemical Coagulation-Electrocoagulation-Membrane Filtration Integrated Systems for Baker's Yeast Wastewater Treatment: Experimental and Economic Evaluation |
| title_fullStr | Efficient Chemical Coagulation-Electrocoagulation-Membrane Filtration Integrated Systems for Baker's Yeast Wastewater Treatment: Experimental and Economic Evaluation |
| title_full_unstemmed | Efficient Chemical Coagulation-Electrocoagulation-Membrane Filtration Integrated Systems for Baker's Yeast Wastewater Treatment: Experimental and Economic Evaluation |
| title_short | Efficient Chemical Coagulation-Electrocoagulation-Membrane Filtration Integrated Systems for Baker's Yeast Wastewater Treatment: Experimental and Economic Evaluation |
| title_sort | efficient chemical coagulation electrocoagulation membrane filtration integrated systems for baker s yeast wastewater treatment experimental and economic evaluation |
| topic | Wastewater treatment electrocoagulation chemical coagulation operating cost membrane filtration baker's yeast wastewater |
| url | http://www.sciencedirect.com/science/article/pii/S2772782322000304 |
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