A study of inline chemical coagulation/precipitation-ceramic microfiltration and nanofiltration for reverse osmosis concentrate minimization and reuse in the textile industry

Reverse osmosis concentrate (ROC) is one of the major drawbacks in membrane treatment technologies specifically due to the scale-forming ions. It is important to remove these ions from ROC to enhance total water recovery and reuse in the textile industry that is the largest water-consumer and pollut...

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Autores principales:	Mehtap Dursun Çelebi, Mehmet Dilaver, Mehmet Kobya
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	cost estimation membrane filtration near-zero liquid discharge reverse osmosis concentrate silica removal textile wastewater Environmental technology. Sanitary engineering TD1-1066
Acceso en línea:	https://doaj.org/article/4f1e3bfd5a2844a78fd6c94e3a720305
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spelling	oai:doaj.org-article:4f1e3bfd5a2844a78fd6c94e3a7203052021-11-23T18:41:02ZA study of inline chemical coagulation/precipitation-ceramic microfiltration and nanofiltration for reverse osmosis concentrate minimization and reuse in the textile industry0273-12231996-973210.2166/wst.2021.439https://doaj.org/article/4f1e3bfd5a2844a78fd6c94e3a7203052021-11-01T00:00:00Zhttp://wst.iwaponline.com/content/84/9/2457https://doaj.org/toc/0273-1223https://doaj.org/toc/1996-9732Reverse osmosis concentrate (ROC) is one of the major drawbacks in membrane treatment technologies specifically due to the scale-forming ions. It is important to remove these ions from ROC to enhance total water recovery and reuse in the textile industry that is the largest water-consumer and polluter industry. In this work, coagulation/high pH precipitation (CP) integrated with ceramic microfiltration (CMF) was studied as a pre-treatment method followed by nanofiltration (NF) to increase the efficiency of water recovery. To prevent organic fouling, ferric chloride (FeCl3) was applied at a concentration of 3 mM, and ceramic membranes were used for the removal of non-precipitating crystals and/or suspended solids (at high pH) before the NF processes. The CP-CMF method successfully removed calcium (Ca2+), magnesium (Mg2+), silica (SiO2), and TOC up to 97, 83, 92, and 87% respectively, which resulted in higher performance of the NF process. Moreover, this method provided higher flux at lower pressure that ultimately increased overall water recovery of the NF process to achieve near-zero liquid discharge (n-ZLD). A cost–benefit estimation showed that a high-quality effluent (COD<5 mg/L; conductivity 700<μS/cm; negligible residual color) can be generated and recycled in the textile industry at an economical cost (approximately 0.97 USD/m3). Therefore, ROC minimization and water recovery can help to achieve n-ZLD using the CP-CMF/NF method. HIGHLIGHTS Studied reverse osmosis concentrate (ROC), an emerging hotspot of pollution.; Explored the removal of scaling precursors and concentrations of organics.; Investigated minimization of ROC by increasing the efficiency of membrane processes.; Discussed cost–benefit estimation to find the economic feasibility of the adopted method.;Mehtap Dursun ÇelebiMehmet DilaverMehmet KobyaIWA Publishingarticlecost estimationmembrane filtrationnear-zero liquid dischargereverse osmosis concentratesilica removaltextile wastewaterEnvironmental technology. Sanitary engineeringTD1-1066ENWater Science and Technology, Vol 84, Iss 9, Pp 2457-2471 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	cost estimation membrane filtration near-zero liquid discharge reverse osmosis concentrate silica removal textile wastewater Environmental technology. Sanitary engineering TD1-1066
spellingShingle	cost estimation membrane filtration near-zero liquid discharge reverse osmosis concentrate silica removal textile wastewater Environmental technology. Sanitary engineering TD1-1066 Mehtap Dursun Çelebi Mehmet Dilaver Mehmet Kobya A study of inline chemical coagulation/precipitation-ceramic microfiltration and nanofiltration for reverse osmosis concentrate minimization and reuse in the textile industry
description	Reverse osmosis concentrate (ROC) is one of the major drawbacks in membrane treatment technologies specifically due to the scale-forming ions. It is important to remove these ions from ROC to enhance total water recovery and reuse in the textile industry that is the largest water-consumer and polluter industry. In this work, coagulation/high pH precipitation (CP) integrated with ceramic microfiltration (CMF) was studied as a pre-treatment method followed by nanofiltration (NF) to increase the efficiency of water recovery. To prevent organic fouling, ferric chloride (FeCl3) was applied at a concentration of 3 mM, and ceramic membranes were used for the removal of non-precipitating crystals and/or suspended solids (at high pH) before the NF processes. The CP-CMF method successfully removed calcium (Ca2+), magnesium (Mg2+), silica (SiO2), and TOC up to 97, 83, 92, and 87% respectively, which resulted in higher performance of the NF process. Moreover, this method provided higher flux at lower pressure that ultimately increased overall water recovery of the NF process to achieve near-zero liquid discharge (n-ZLD). A cost–benefit estimation showed that a high-quality effluent (COD<5 mg/L; conductivity 700<μS/cm; negligible residual color) can be generated and recycled in the textile industry at an economical cost (approximately 0.97 USD/m3). Therefore, ROC minimization and water recovery can help to achieve n-ZLD using the CP-CMF/NF method. HIGHLIGHTS Studied reverse osmosis concentrate (ROC), an emerging hotspot of pollution.; Explored the removal of scaling precursors and concentrations of organics.; Investigated minimization of ROC by increasing the efficiency of membrane processes.; Discussed cost–benefit estimation to find the economic feasibility of the adopted method.;
format	article
author	Mehtap Dursun Çelebi Mehmet Dilaver Mehmet Kobya
author_facet	Mehtap Dursun Çelebi Mehmet Dilaver Mehmet Kobya
author_sort	Mehtap Dursun Çelebi
title	A study of inline chemical coagulation/precipitation-ceramic microfiltration and nanofiltration for reverse osmosis concentrate minimization and reuse in the textile industry
title_short	A study of inline chemical coagulation/precipitation-ceramic microfiltration and nanofiltration for reverse osmosis concentrate minimization and reuse in the textile industry
title_full	A study of inline chemical coagulation/precipitation-ceramic microfiltration and nanofiltration for reverse osmosis concentrate minimization and reuse in the textile industry
title_fullStr	A study of inline chemical coagulation/precipitation-ceramic microfiltration and nanofiltration for reverse osmosis concentrate minimization and reuse in the textile industry
title_full_unstemmed	A study of inline chemical coagulation/precipitation-ceramic microfiltration and nanofiltration for reverse osmosis concentrate minimization and reuse in the textile industry
title_sort	study of inline chemical coagulation/precipitation-ceramic microfiltration and nanofiltration for reverse osmosis concentrate minimization and reuse in the textile industry
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/4f1e3bfd5a2844a78fd6c94e3a720305
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A study of inline chemical coagulation/precipitation-ceramic microfiltration and nanofiltration for reverse osmosis concentrate minimization and reuse in the textile industry

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