Selection of anionic exchange resins for removal of natural organic matter (NOM) fractions

Cornelissen, Emile; Moreau, N.; Siegers, W.G.; Abrahamse, AJ; Rietveld, L.C.; Grefte, A.; Dignum, Marco; Amy, Gary L.; Wessels, L.P.

doi:10.1016/j.watres.2007.07.033

Cited by 123 publications

(76 citation statements)

References 15 publications

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“…Tested resins differ by basicity: A100 is weak base while BD400FD is strong base one. Obtained results are contrary to the literature by which weak base anion exchange resins should perform noticeably worse than strong base when it comes to NOM removal [15]. It was probably caused by BD400FD ion exchange capacity being lower than declared in product sheet.…”

Section: Resultscontrasting

confidence: 75%

The efficiency of macroporous polystyrene ion-exchange resins in natural organic matter removal from surface water

Urbanowska

Kabsch-Korbutowicz

2017

E3S Web Conf.

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Abstract. Natural water sources used for water treatment contains various organic and inorganic compounds. Surface waters are commonly contaminated with natural organic matter (NOM). NOM removal from water is important e.g. due to lowering the risk of disinfection by-product formation during chlorination. Ion exchange with the use of synthetic ion-exchange resins is an alternative process to typical NOM removal approach (e.g. coagulation, adsorption or oxidation) as most NOM compounds have anionic character. Moreover, neutral fraction could be removed from water due to its adsorption on resin surface. In this study, applicability of two macroporous, polystyrene ion exchange resins (BD400FD and A100) in NOM removal from water was assessed including comparison of treatment efficiency in various process set-ups and conditions. Moreover, resin regeneration effectivity was determined. Obtained results shown that examined resins could be applied in NOM removal and it should be noticed that column set-up yielded better results (contrary to batch set-up). Among the examined resins A100 one possessed better properties. It was determined that increase of solution pH resulted in a slight decrease in treatment efficiency while higher temperature improved it. It was also observed that regeneration efficiency was comparable in both tested methods but batch set-up required less reagents.

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Section: Resultscontrasting

confidence: 75%

The efficiency of macroporous polystyrene ion-exchange resins in natural organic matter removal from surface water

Urbanowska

Kabsch-Korbutowicz

2017

E3S Web Conf.

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“…The calculated fraction that remained on the chromatography column is considered to be hydrophobic fraction of the organic carbon expressed as hydrophobic organic carbon (HOC). Due to the unknown error that exists in the calculation method of HOC [33], the HOC fraction is not used in this study. In the measured samples, the HOC fractions count for approximately 10% of the total dissolved NOM.…”

Section: Organic Matter Characterization By Lc-ocdmentioning

confidence: 99%

Hydraulically irreversible fouling on ceramic MF/UF membranes: Comparison of fouling indices, foulant composition and irreversible pore narrowing

Shang

Vuong

et al. 2015

Separation and Purification Technology

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This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. irreversible fouling, is still a critical aspect affecting the operational cost and energy consumption in water treatment plants. In this study, four ceramic membranes with pore sizes or molecular weight cut-off (MWCO) of 0.20 μm, 0.14 μm, 300 kDa and 50 kDa were compared during natural surface water filtration with respect to hydraulically irreversible fouling index (HIFI), foulant composition and narrowing of pore size due to the irreversible fouling. Our results showed that the hydraulically irreversible fouling index (HIFI) was proportional to the membrane pore size (r 2 =0.89) when the same feed water was filtrated. The UF membranes showed lower HIFI values than the MF membranes. Pore narrowing (internal fouling) was found to be a main fouling pattern of the hydraulically irreversible fouling. The internal fouling was caused by monolayer adsorption of foulants with different sizes that is dependent on the size of the membrane pore.

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“…NOM in surface water can be removed by IEX, because the main part of NOM, humic, fulvic and organic acids, is negatively charged (Bolto et al, 2002;Cornelissen et al, 2008). IEX is a promising method for NOM removal, because empty bed contact times can be small and run times of IEX columns can be up to several weeks (van der Helm et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Natural organic matter removal by ion exchange at different positions in the drinking water treatment lane

Grefte

Dignum²,

Cornelissen

et al. 2013

Drink. Water Eng. Sci.

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Abstract. To guarantee a good water quality at the customers tap, natural organic matter (NOM) should be (partly) removed during drinking water treatment. The objective of this research was to improve the biological stability of the produced water by incorporating anion exchange (IEX) for NOM removal. Different placement positions of IEX in the treatment lane (IEX positioned before coagulation, before ozonation or after slow sand filtration) and two IEX configurations (MIEX ® and fluidized IEX (FIX)) were compared on water quality as well as costs. For this purpose the pre-treatment plant at Loenderveen and production plant Weesperkarspel of Waternet were used as a case study. Both, MIEX ® and FIX were able to remove NOM (mainly the HS fraction) to a high extent. NOM removal can be done efficiently before ozonation and after slow sand filtration. The biological stability, in terms of assimilable organic carbon, biofilm formation rate and dissolved organic carbon, was improved by incorporating IEX for NOM removal. The operational costs were assumed to be directly dependent of the NOM removal rate and determined the difference between the IEX positions. The total costs for IEX for the three positions were approximately equal (0.0631 € m −3 ), however the savings on following treatment processes caused a cost reduction for the IEX positions before coagulation and before ozonation compared to IEX positioned after slow sand filtration. IEX positioned before ozonation was most cost effective and improved the biological stability of the treated water.

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Selection of anionic exchange resins for removal of natural organic matter (NOM) fractions

Cited by 123 publications

References 15 publications

The efficiency of macroporous polystyrene ion-exchange resins in natural organic matter removal from surface water

The efficiency of macroporous polystyrene ion-exchange resins in natural organic matter removal from surface water

Hydraulically irreversible fouling on ceramic MF/UF membranes: Comparison of fouling indices, foulant composition and irreversible pore narrowing

Natural organic matter removal by ion exchange at different positions in the drinking water treatment lane

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