Removal of the precursors of regulated DBPs and TOX from surface waters and wastewater effluents using mixed anion exchange resins

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dc.contributor.authorKanan, Amer
dc.contributor.authorSoyluoglu, Meryem
dc.contributor.authorKaranfil, Tanju
dc.date.accessioned2021-06-09T07:13:38Z
dc.date.available2021-06-09T07:13:38Z
dc.date.issued2020-08-20
dc.descriptionMixed and single anion exchange resins were tested for the removal of organic and inorganic DBPs precursors from water. Formation of total organic halides (TOX) was more reduced from wastewater effluents treated by the mixed resin system. Doubling the resin dose resulted in less than 10e20% improvement in DBP precursors’ removal.en_US
dc.description.abstractBoth organic and inorganic precursors play important roles in the formation and speciation of disinfection by-products (DBPs). This study aimed to investigate the efficacy of three different anion exchange resins for removing both organic and inorganic DBP precursors simultaneously in a single treatment system. Resins in the single (Purolite®-Br, MIEX®-Br, and MIEX®-Gold) and mixed (Purolite®-Br with MIEX®-Gold and MIEX®-Br with MIEX®-Gold) application modes were tested and compared for the removal of dissolved organic carbon (DOC), bromide (Br ), and iodide (I ) from a raw source water and a treated wastewater effluent. Uniform formation condition (UFC) tests were conducted to measure the concentrations of trihalomethanes (THM4), haloacetic acids (HAA9), haloacetonitriles (HAN6), and total organic halides (TOX): total organic chlorine (TOCl), total organic bromine (TOBr), and total organic iodine (TOI) before and after the anion exchange resin treatments. The anion exchange treatment substantially lowered the DOC, UV254 absorbing matter, dissolved nitrogen (DN), Br , and I . Consequently, the formation of THM4, HAA9, HAN6, and TOX in the examined chlorinated water samples were reduced significantly. The maximum reduction in THM4 and TOX (66e69% and 61%, respectively) from wastewater effluent was achieved by the mixed resin system, which also reduced the THM4 and TOX by 77% and 77%, respectively, from raw source water. Overall, mixed resin systems (a DOC-selective and a Brselective resin) resulted in lower amounts of THM4 and HAA9 formation during subsequent chlorination with lower bromine incorporation as compared to single resin systems. Furthermore, they exhibited lower TOBr formation, while TOI formation was not detecteden_US
dc.identifier.citationKanan A, Soyluoglu M, Karanfil T (2021) Removal of the precursors of regulated DBPs and TOX from surface waters and wastewater effluents using mixed anion exchange resins. Chemosphere 263:1–8. https://doi.org/10.1016/j.chemosphere.2020.128094en_US
dc.identifier.otherdoi.org/10.1016/J.CHEMOSPHERE.2020.128094
dc.identifier.urihttps://dspace.alquds.edu/handle/20.500.12213/6400
dc.language.isoen_USen_US
dc.publisherChemosphereen_US
dc.subjectDisinfection by-productsen_US
dc.subjectIon exchangeen_US
dc.subjectBromideen_US
dc.subjectDissolved organic carbonen_US
dc.subjectTotal organic halidesen_US
dc.titleRemoval of the precursors of regulated DBPs and TOX from surface waters and wastewater effluents using mixed anion exchange resinsen_US
dc.typeArticleen_US
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