The effect of pre-treatment methods on membrane flux, COD, and total phenol removal efficiencies for membrane treatment of pistachio wastewater

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dc.authoridOZAY, Yasin/0000-0001-5419-6115
dc.contributor.authorOzay, Yasin
dc.contributor.authorDizge, Nadir
dc.date.accessioned2025-03-17T12:27:04Z
dc.date.available2025-03-17T12:27:04Z
dc.date.issued2022
dc.departmentTarsus Üniversitesi
dc.description.abstractIn this study, the effect of pre-treatment methods was investigated for membrane treatment of pistachio processing wastewater (PPW). Chemical coagulation, electrocoagulation, and electrooxidation processes were tested as the pretreatment methods to understand the effect of pretreatment on membrane performance. Alum (Al-2(SO4)(3).18H(2)O), iron (III) chloride (FeCl3.6H(2)O) and iron(II) sulfate (Fe(SO4).7H(2)O) were used as coagulant and anionic polyelectrolyte was used as flocculant. Al-Al and Fe-Fe electrode pairs were used in the electrocoagulation experiments while platinum (Pt), boron doped diamond (BDD), and graphite were used in the electrooxidation experiments. UP150, NF270, and NF90 were used as the membranes. Chemical oxygen demand (COD) and total phenol removal efficiencies from wastewater were determined by considering membrane flux. For chemical coagulation experiments, the highest COD removal efficiency was determined as 44.9% for Al-2(SO4)(3).18H(2)O at 1000 mg/L when the wastewater pH value was 8.0. However, the highest total phenol removal efficiencies were obtined as 62.5% at 4000 mg/L for FeCl3.6H(2)O at pH 8. For electrocoagulation experiments, the highest COD and total phenol removal efficiencies were determined as 63.9% at pH 4.0 and 74.2% at pH 7.0, respectively, for 100 A/m(2) current density when aluminum electrode pairs were used. For electrooxidation experiments, the highest COD and total phenol removal efficiencies were determined as 61.2% at pH 4.0 and 83.1% at pH 10, respectively, for 200 A/m(2) current density when BDD-Pt electrode pairs were used. Raw PPW and pre-treated PPW with chemical coagulation, electrocoagulation, and electrooxidation processes were progressively further treated with ultrafiltration (UP150) and nanofiltration (NF270, NF90) membranes to improve COD and total phenol removal efficiencies. The results showed that the permeate of NF90 membrane supplied the highest COD (96.0%) and total phenol removal (97.5%) efficiencies for the raw wastewater. However, COD and total phenol removal efficiencies were determined as 98.6% and 100% for electrocoagulation + NF90, 97.9% and 100% for electrooxidation + NF90, 96.6% and 100% for chemical coagulation + NF90, respectively. The steady-state fluxes for NF90 membranes were 2.9, 7.0, and 8.6 L/m(2)h after chemical coagulation, electrooxidation, and electrocoagulation, respectively. The results depicted that electrocoagulation and electrooxidation were the most suitable pre-treatment methods for water recovery using NF90 membrane.
dc.description.sponsorshipMersin University of ScientificResearch Council [2019-3-AP4-3622]
dc.description.sponsorshipThis project was supported by Mersin University of ScientificResearch Council (Project Number: 2019-3-AP4-3622) .
dc.identifier.doi10.1016/j.jenvman.2022.114762
dc.identifier.issn0301-4797
dc.identifier.issn1095-8630
dc.identifier.pmid35220102
dc.identifier.scopus2-s2.0-85125126710
dc.identifier.scopusqualityQ1
dc.identifier.urihttps://doi.org/10.1016/j.jenvman.2022.114762
dc.identifier.urihttps://hdl.handle.net/20.500.13099/2056
dc.identifier.volume310
dc.identifier.wosWOS:000780884900004
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.indekslendigikaynakPubMed
dc.language.isoen
dc.publisherAcademic Press Ltd- Elsevier Science Ltd
dc.relation.ispartofJournal of Environmental Management
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_WOS_20250316
dc.subjectPre-treatment methods
dc.subjectMembrane treatment
dc.subjectCOD removal
dc.subjectTotal phenol removal
dc.subjectPistachio wastewater
dc.titleThe effect of pre-treatment methods on membrane flux, COD, and total phenol removal efficiencies for membrane treatment of pistachio wastewater
dc.typeArticle

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