Removal of bromide from natural waters: Bromide-selective vs. conventional ion exchange resins

Soyluoglu, Meryem; Erşan, Mahmut S.; Ateia, Mohamed; Karanfil, Tanju

doi:10.1016/j.chemosphere.2019.124583

Cited by 62 publications

(18 citation statements)

References 46 publications

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“…Ion exchangers are used for purifying water, including in the treatment of water for conventional and nuclear power plants [1,2]. Many treatment and disposal strategies for reducing the environmental hazard arising from the generation of waste resins (some of which are radioactive waste) have been considered [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Weakly Hydrated Anion Exchangers Doped with Cu2O and Cu0 Particles—Thermogravimetric Studies

2021

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Hybrid ion exchangers (HIXs) containing fine Cu2O and Cu0 particles were subjected to thermal analysis in order to determine their hygroscopic water content (with regard to their anomalously low porosity) and to determine the effect of the oxidation state of the copper atom in the deposit on the thermal properties of composite materials. Commercially available anion exchangers, Amberlite IRA 900Cl (macroreticular, M) and Amberlite IRA 402OH (gel-like, G), were used as supporting materials. M/Cu2O, G/Cu2O, M/Cu and G/Cu, containing 4.3–8.4 wt% Cu, were subjected to thermal analysis under respectively air and N2. TG/DTG curves revealed that dry M/Cu and G/Cu contained as little as 7.2% and 4.3% hygroscopic water, while M/Cu2O and G/Cu2O contained respectively 10.6% and 9.4% (Cu0 was a stronger water repellent than Cu2O). The oxidation state of the copper atom in the deposit was found to affect the amount of the forming char, and also Cu0 was found to contribute to the formation of more char than in the pyrolysis of the pure resin (the anion exchanger with no copper deposit). Under air the two kinds of particles transformed into CuO, while under N2 metallic copper and char (from the resin phase) made up the solid residue. This means that in the pyrolysis of the HIXs the inorganic phase participated in char formation and it also transformed itself (undergoing reduction when possible). The above findings provide a basis for in-depth research aimed at the innovative use of copper-containing HIXs and at obtaining usable composite materials with a designed (organic-inorganic) composition.

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Section: Introductionmentioning

confidence: 99%

Weakly Hydrated Anion Exchangers Doped with Cu2O and Cu0 Particles—Thermogravimetric Studies

2021

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“…The chemical composition of source water is also an important factor regarding the formation of DBPs. For instance, in areas where the soil and source water are rich in bromine or iodide, the prevalence of brominated or iodinated DBPs tends to be higher than in areas lower in bromine or iodine [34,35]. Generally, increasing temperatures elevate the formation rates of DBPs.…”

Section: Sources Of Exposure To Dbpsmentioning

confidence: 99%

Endocrine Disruptors in Water and Their Effects on the Reproductive System

Gonsioroski

Mourikes

Flaws

2020

IJMS

173

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Anthropogenic contaminants in water can impose risks to reproductive health. Most of these compounds are known to be endocrine disrupting chemicals (EDCs). EDCs can impact the endocrine system and subsequently impair the development and fertility of non-human animals and humans. The source of chemical contamination in water is diverse, originating from byproducts formed during water disinfection processes, release from industry and livestock activity, or therapeutic drugs released into sewage. This review discusses the occurrence of EDCs in water such as disinfection byproducts, fluorinated compounds, bisphenol A, phthalates, pesticides, and estrogens, and it outlines their adverse reproductive effects in non-human animals and humans.

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“…In addition, the drinking water guideline values from the World Health Organisation (WHO) tend to be lower for brominated DBPs when compared to fully chlorinated equivalents [22]. Studies of brominated DBPs pertaining to IEX technologies have included targeted removal of bromide [6,23] as a means of suppressing brominated DBP formation directly. Those in which impacts of raw water bromide concentration on treated water DBP speciation have been largely limited to bench-scale studies [11,13,24].…”

Section: Introductionmentioning

confidence: 99%

Sorptive removal of disinfection by-product precursors from UK lowland surface waters: Impact of molecular weight and bromide

Carra

Lozano

Johannesen

et al. 2021

Science of The Total Environment

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The current study compared the impact of three different unit processes, coagulation, granular activated carbon (GAC), and a novel suspended ion exchange (SIX) technology, on disinfection by-product formation potential (DBPFP) from two UK lowland water sources with medium to high bromide content. Specific attention was given to the influence of the organic molecular weight (MW) fraction on DBPFP as well as the impact of bromide concentration.While few studies have investigated the impact of MW fractions from Liquid Chromatography with Organic Carbon Detection (LC-OCD) analysis on dissolved organic carbon (DOC) removal by different processes, none have studied the influence of DOC MW fractions from this analysis on DBP formation. The impact of higher bromide concentration was to decrease the total trihalomethane (THM) and haloacetic acid (HAA) mass concentration, in contrast to previously reported studies. Results indicated that for a moderate bromide concentration source (135 µg/L), the THM formation potential was reduced by 22% or 64% after coagulation or SIX treatment, respectively. For a high bromide content source (210 µg/L), the THM formation potential removal was 47% or 69% following GAC and SIX treatment, respectively. The trend was the same for HAAs, albeit with greater differences between the two processes/feedwaters with reference to overall removal. A statistical analysis indicated

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Removal of bromide from natural waters: Bromide-selective vs. conventional ion exchange resins

Cited by 62 publications

References 46 publications

Weakly Hydrated Anion Exchangers Doped with Cu2O and Cu0 Particles—Thermogravimetric Studies

Weakly Hydrated Anion Exchangers Doped with Cu2O and Cu0 Particles—Thermogravimetric Studies

Endocrine Disruptors in Water and Their Effects on the Reproductive System

Sorptive removal of disinfection by-product precursors from UK lowland surface waters: Impact of molecular weight and bromide

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