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

dc.contributor.author Kanan, Amer
dc.contributor.author Soyluoglu, Meryem
dc.contributor.author Karanfil, Tanju
dc.date.accessioned 2021-06-09T07:13:38Z
dc.date.available 2021-06-09T07:13:38Z
dc.date.issued 2020-08-20
dc.description Mixed 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.abstract Both 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 detected en_US
dc.identifier.citation Kanan 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.2020.128094 en_US
dc.identifier.other doi.org/10.1016/J.CHEMOSPHERE.2020.128094
dc.identifier.uri https://dspace.alquds.edu/handle/20.500.12213/6400
dc.language.iso en_US en_US
dc.publisher Chemosphere en_US
dc.subject Disinfection by-products en_US
dc.subject Ion exchange en_US
dc.subject Bromide en_US
dc.subject Dissolved organic carbon en_US
dc.subject Total organic halides en_US
dc.title Removal of the precursors of regulated DBPs and TOX from surface waters and wastewater effluents using mixed anion exchange resins en_US
dc.type Article en_US
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