دورية أكاديمية
Novel electro-oxidation unit for electro-disinfection of E. coli and some waterborne pathogens during wastewater treatment: batch and continuous experiments.
| العنوان: | Novel electro-oxidation unit for electro-disinfection of E. coli and some waterborne pathogens during wastewater treatment: batch and continuous experiments. |
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| المؤلفون: | Hellal MS; Water Pollution Research Department, National Research Centre, 33 El-Bohouth St., Dokki, Giza, 12622, Egypt., Hemdan BA; Water Pollution Research Department, National Research Centre, 33 El-Bohouth St., Dokki, Giza, 12622, Egypt. bahaa_nrc@yahoo.com., Youssef M; Water Pollution Research Department, National Research Centre, 33 El-Bohouth St., Dokki, Giza, 12622, Egypt., El-Taweel GE; Water Pollution Research Department, National Research Centre, 33 El-Bohouth St., Dokki, Giza, 12622, Egypt., Abou Taleb EM; Water Pollution Research Department, National Research Centre, 33 El-Bohouth St., Dokki, Giza, 12622, Egypt. |
| المصدر: | Scientific reports [Sci Rep] 2022 Sep 30; Vol. 12 (1), pp. 16417. Date of Electronic Publication: 2022 Sep 30. |
| نوع المنشور: | Journal Article; Research Support, Non-U.S. Gov't |
| اللغة: | English |
| بيانات الدورية: | Publisher: Nature Publishing Group Country of Publication: England NLM ID: 101563288 Publication Model: Electronic Cited Medium: Internet ISSN: 2045-2322 (Electronic) Linking ISSN: 20452322 NLM ISO Abbreviation: Sci Rep Subsets: MEDLINE |
| أسماء مطبوعة: | Original Publication: London : Nature Publishing Group, copyright 2011- |
| مواضيع طبية MeSH: | Graphite* , Water Pollutants, Chemical*/chemistry , Water Purification*/methods, Bacteria ; Disinfection/methods ; Electrodes ; Escherichia coli ; Polymethyl Methacrylate ; Stainless Steel ; Wastewater/microbiology ; Water |
| مستخلص: | The prime objective of the current investigation is to evaluate a promising alternative method for disinfection wastewater using a novel electro-oxidation unit. The study focused on determining the best-operating conditions from a techno-economic point of view to be applied to continuous flow simulating actual disinfection modules. The treatment unit consisted of a Plexiglas container with a 3 L volume containing nine cylindrical shape electrodes (6 graphite as anode and 3 stainless steel as a cathode) connected to a variable DC power supply. Determination of the best operating parameters was investigated in batch mode on synthetic wastewater by studying the effect of contact time, current density (CD), total dissolved solids concentration (TDS), and bacterial density. Moreover, the continuous mode experiment was considered on real wastewater from an agricultural drain and the secondary wastewater treatment plant effluent before chlorination. The batch mode results revealed that the best applicable operational conditions that achieved the complete removal of E. coli were at a contact time of less than 5 min, TDS of 2000 mg/L, and CD of 4 mA/cm 2 . Application of these conditions on the continuous mode experiment indicated the complete removal of all bacterial indicators after 5 min in the drainage wastewater and after 3 min in the secondary treated wastewater. Physico-chemical characterization also suggested that no chlorine by-products displaying the hydroxide ion formed due to water electrolysis is the main reason for prohibiting the growth of pathogenic microbes. The electrical consumption was calculated in the continuous mode and found to be 0.5 kWh/m 3 with an operational cost of about 0.06 $/m 3 , including the cost of adding chemicals to increase the TDS. The results proved that this novel electro-oxidation unit is a robust and affordable disinfection method for complete bacterial removal from wastewater and is more environmentally benign than other conventional disinfection methods. (© 2022. The Author(s).) |
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| المشرفين على المادة: | 7782-42-5 (Graphite) 9011-14-7 (Polymethyl Methacrylate) 12597-68-1 (Stainless Steel) 0 (Wastewater) 059QF0KO0R (Water) 0 (Water Pollutants, Chemical) |
| تواريخ الأحداث: | Date Created: 20220930 Date Completed: 20230403 Latest Revision: 20230403 |
| رمز التحديث: | 20240829 |
| مُعرف محوري في PubMed: | PMC9525299 |
| DOI: | 10.1038/s41598-022-20451-w |
| PMID: | 36180517 |
| قاعدة البيانات: | MEDLINE |
Find this article in full text from Springer Verlag. 
Full Text Finder | تدمد: | 2045-2322 |
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| DOI: | 10.1038/s41598-022-20451-w |