Removal of microplastics from wastewater through electrocoagulation-electroflotation and membrane filtration processes

Wastewater treatment plants (WWTPs) are one of the major vectors of microplastics (MPs) pollution for the recipient water bodies. Therefore, the recovery of MPs from WWTPs is extremely important for decreasing their accumulation and impact in aquatic systems. In this present study, the electrocoagul...

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Autores principales: Ceyhun Akarsu, Halil Kumbur, Ahmet Erkan Kideys
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Publicado: IWA Publishing 2021
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spelling oai:doaj.org-article:b1749b5d4706448a95a5d375ac78f3f82021-11-06T11:24:15ZRemoval of microplastics from wastewater through electrocoagulation-electroflotation and membrane filtration processes0273-12231996-973210.2166/wst.2021.356https://doaj.org/article/b1749b5d4706448a95a5d375ac78f3f82021-10-01T00:00:00Zhttp://wst.iwaponline.com/content/84/7/1648https://doaj.org/toc/0273-1223https://doaj.org/toc/1996-9732Wastewater treatment plants (WWTPs) are one of the major vectors of microplastics (MPs) pollution for the recipient water bodies. Therefore, the recovery of MPs from WWTPs is extremely important for decreasing their accumulation and impact in aquatic systems. In this present study, the electrocoagulation-electroflotation (EC/EF) and membrane filtration processes were investigated in removing MPs from wastewaters. The effectiveness of different electrode combinations (Fe-Al and Al-Fe), current density (10–20 A/m2), pH (4.0–10.0) and operating times (0–120 min) on the removal of two different polymer particles in water were investigated to obtain maximum treatment efficiency. The effect of pressure (1–3 bar) on membrane filtration removal efficiency was also investigated. The maximum removal efficiencies were obtained as 100% for both polymer types with electrode combination of Al-Fe, initial pH of 7, current density of 20 A/m2 and reaction time of 10 min. The membrane filtration method also displayed a 100% removal efficiency. In addition, these laboratory-scale results were compared with the one-year average data of a plant treating with real-scale membranes. The results indicated that the proposed processes supplied maximum removal efficiency (100%) compared to conventional secondary and tertiary treatment methods (2–81.6%) in the removal of microplastics. HIGHLIGHTS One of the few laboratory-scale studies on microplastics removal.; First study on microplastic removal by electrocoagulation.; 1-year average result data for real-scale membrane filtration efficiency.;Ceyhun AkarsuHalil KumburAhmet Erkan KideysIWA Publishingarticleelectrocoagulationelectroflotationfibersmembrane filtrationmicroplasticwastewater treatmentEnvironmental technology. Sanitary engineeringTD1-1066ENWater Science and Technology, Vol 84, Iss 7, Pp 1648-1662 (2021)
institution DOAJ
collection DOAJ
language EN
topic electrocoagulation
electroflotation
fibers
membrane filtration
microplastic
wastewater treatment
Environmental technology. Sanitary engineering
TD1-1066
spellingShingle electrocoagulation
electroflotation
fibers
membrane filtration
microplastic
wastewater treatment
Environmental technology. Sanitary engineering
TD1-1066
Ceyhun Akarsu
Halil Kumbur
Ahmet Erkan Kideys
Removal of microplastics from wastewater through electrocoagulation-electroflotation and membrane filtration processes
description Wastewater treatment plants (WWTPs) are one of the major vectors of microplastics (MPs) pollution for the recipient water bodies. Therefore, the recovery of MPs from WWTPs is extremely important for decreasing their accumulation and impact in aquatic systems. In this present study, the electrocoagulation-electroflotation (EC/EF) and membrane filtration processes were investigated in removing MPs from wastewaters. The effectiveness of different electrode combinations (Fe-Al and Al-Fe), current density (10–20 A/m2), pH (4.0–10.0) and operating times (0–120 min) on the removal of two different polymer particles in water were investigated to obtain maximum treatment efficiency. The effect of pressure (1–3 bar) on membrane filtration removal efficiency was also investigated. The maximum removal efficiencies were obtained as 100% for both polymer types with electrode combination of Al-Fe, initial pH of 7, current density of 20 A/m2 and reaction time of 10 min. The membrane filtration method also displayed a 100% removal efficiency. In addition, these laboratory-scale results were compared with the one-year average data of a plant treating with real-scale membranes. The results indicated that the proposed processes supplied maximum removal efficiency (100%) compared to conventional secondary and tertiary treatment methods (2–81.6%) in the removal of microplastics. HIGHLIGHTS One of the few laboratory-scale studies on microplastics removal.; First study on microplastic removal by electrocoagulation.; 1-year average result data for real-scale membrane filtration efficiency.;
format article
author Ceyhun Akarsu
Halil Kumbur
Ahmet Erkan Kideys
author_facet Ceyhun Akarsu
Halil Kumbur
Ahmet Erkan Kideys
author_sort Ceyhun Akarsu
title Removal of microplastics from wastewater through electrocoagulation-electroflotation and membrane filtration processes
title_short Removal of microplastics from wastewater through electrocoagulation-electroflotation and membrane filtration processes
title_full Removal of microplastics from wastewater through electrocoagulation-electroflotation and membrane filtration processes
title_fullStr Removal of microplastics from wastewater through electrocoagulation-electroflotation and membrane filtration processes
title_full_unstemmed Removal of microplastics from wastewater through electrocoagulation-electroflotation and membrane filtration processes
title_sort removal of microplastics from wastewater through electrocoagulation-electroflotation and membrane filtration processes
publisher IWA Publishing
publishDate 2021
url https://doaj.org/article/b1749b5d4706448a95a5d375ac78f3f8
work_keys_str_mv AT ceyhunakarsu removalofmicroplasticsfromwastewaterthroughelectrocoagulationelectroflotationandmembranefiltrationprocesses
AT halilkumbur removalofmicroplasticsfromwastewaterthroughelectrocoagulationelectroflotationandmembranefiltrationprocesses
AT ahmeterkankideys removalofmicroplasticsfromwastewaterthroughelectrocoagulationelectroflotationandmembranefiltrationprocesses
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