Removal of both N-nitrosodimethylamine and trihalomethanes precursors in a single treatment using ion exchange resins

Beita-Sandí, Wilson; Karanfil, Tanju

doi:10.1016/j.watres.2017.07.028

Cited by 28 publications

(5 citation statements)

References 71 publications

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“…The resins were pre-washed before the experiments to remove any impurities (See in Appendix), as described in our previous studies (Gan et al, 2013;Beita-Sandí and Karanfil, 2017). The preliminary experiments were then undertaken using varying Brconcentrations (100-1000 μg/L), contact times (5-20 min), bed volumes (BV = 200-1400), and pH (5.5-10).…”

Section: Bromide Removal Experimentsmentioning

confidence: 99%

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

et al. 2020

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Tanju Karanfil for his guidance, help and support. Also, thanks to acknowledge Dr. Cindy Lee and Dr. David Ladner for serving on my research and dissertation committee. I would like to thank Mahmut Selim Ersan, Mohammed Ateia and Mohsen Ghafari for their great help during the data discussion and all of the brainstorming that we had together. Many special thanks to Cagri Utku Erdem, Wilson Beita Sandi and Numan Habip for their support and friendship. I would like to thank my family; Canan&Mustafa Mete Soyluoglu, Seda Bahar Soyluoglu, Damla Soyluoglu and Dilek Akbiyik for their love, unconditional and continuous support and trust. Also, special thanks to my uncle, Sinan Uyanik, for his help, support and being my role model in my life.

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Section: Bromide Removal Experimentsmentioning

confidence: 99%

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

et al. 2020

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“…In catalysis, strong acidic and basic resins are most suitable for applications, while all resins types can be applied for varying purification and separation processes. [29][30][31][32][33] The main functional group in the strong and weak acid resins are the sulphonic acid and the carboxylic acid group, which functions by acid dissociation (H + species). [34] Strong acidic resins are mainly employed as catalyst in esterification and in alkylation reactions.…”

Section: Catalysis and Ion Exchange Resinsmentioning

confidence: 99%

“…Therefore, ion exchange resins as catalyst and/or catalyst support is still a new and developing research area. In catalysis, strong acidic and basic resins are most suitable for applications, while all resins types can be applied for varying purification and separation processes . The main functional group in the strong and weak acid resins are the sulphonic acid and the carboxylic acid group, which functions by acid dissociation (H + species) .…”

Section: Catalysis and Ion Exchange Resinsmentioning

confidence: 99%

The Functionality of Ion Exchange Resins for Esterification, Transesterification and Hydrogenation Reactions

Osazuwa

Abidin

2020

ChemistrySelect

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Ion exchange resins (IER) possess a catalytically flexible structure which enables them to be easily applied for renewable energy production and environmentally friendly reactions. More specifically, they can be used as catalyst or catalyst support in other industrialized processes such as; esterification, transesterification and hydrogenation reactions. Several works on esterification, transesterification and hydrogenation reactions are in literature. This study reviews some of these works which includes the utilization of IER in esterification, trans-esterification and hydrogenation reactions. Recent reports show that IER are conventionally used as catalyst in esterification and transesterification reactions. For hydrogenation reactions, IER have been utilized as support for metallic catalyst, raising questions on their inability to be applied as catalyst. Hence, this study has itemized these various reactions, detailing their applications which are highly industrialized reaction processes.

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“…In addition to boiler feedwater treatment, IX is used as pretreatment for reverse osmosis to reduce inorganic fouling when treating coal seam gas wastewater [6]. Outside of oil & gas, IX is used in various water treatment applications including dissolved organic carbon removal [7], water softening [8,9], trace metal and nitrate removal [10][11][12] and wastewater treatment to meet effluent discharge [13,14].…”

Section: Steam Is Used In a Variety Of Ways Includingmentioning

confidence: 99%

Evaluation of new ion exchange resins for hardness removal from boiler feedwater

et al. 2018

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Ion exchange is widely used for the removal of selected ions from water streams. Within oil & gas, one application is boiler feedwater treatment to remove hardness, i.e. calcium and magnesium. Weak acid cation (WAC) resins are typically used and advances in material science, polymer chemistry and manufacturing methods have resulted in new resins being introduced to the market. These new resins can lower operating costs through higher capacity, reduced chemical consumption during regeneration or improved physical properties.In this research, the performance of a WAC resin used for boiler feedwater treatment in oil & gas operations (resin A) was compared with two new commercial resins (resins B & C).The results indicated that resin B had the highest operational capacity in comparison to A & C. During regeneration, resin B was the most efficient with 0.43 meq of calcium and magnesium removed from the feed per meq of HCl consumed during regeneration, slightly higher than resins A & C at 0.38 and 0.30 meq/meq respectively. All three resins demonstrated preferential affinity for calcium over magnesium. As breakthrough approached, previously adsorbed magnesium ions were released back to the water resulting in a spike in effluent magnesium that was ≈3× higher than in the feed stream. In full-scale systems, breakthrough can be determined by measuring only the effluent magnesium concentration which can be more sensitive parameter than total hardness and/or calcium.

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Removal of both N-nitrosodimethylamine and trihalomethanes precursors in a single treatment using ion exchange resins

Cited by 28 publications

References 71 publications

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

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

The Functionality of Ion Exchange Resins for Esterification, Transesterification and Hydrogenation Reactions

Evaluation of new ion exchange resins for hardness removal from boiler feedwater

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