Performance of selected anion exchange resins for the treatment of a high DOC content surface water

Humbert, Hugues; Gallard, Hervé; Suty, H.; Croué, Jean-Philippe

doi:10.1016/j.watres.2005.02.008

Cited by 172 publications

(116 citation statements)

References 13 publications

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“…With an initial concentration of 0.1 to 0.8 mg/L, a resin dose of 8 mL/L and contact time of 30 min, the sorption percentage of parathion-methyl was less than 10% (results not shown). Poor non-ionic pesticides removal efficiency has also been observed by Humbert et al (2005), who studied the performance of MIEX resin for atrazine and isoproturon treatment. These results confirm that bentazone was removed by ion exchange.…”

Section: Isotherm Studymentioning

confidence: 80%

Removal of bentazone from micro-polluted water using MIEX resin: Kinetics, equilibrium, and mechanism

Liu

Yan

Drikas

et al. 2011

Journal of Environmental Sciences

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The contamination of surface and ground water by bentazone has attracted increasing global concern in recent years. We conducted a detailed investigation using MIEX resin to eliminate bentazone from waters. Batch experiments were carried out to evaluate the effect of process parameters, such as retention time, resin amount, and initial pesticide concentration, on removal efficiency of bentazone. Results showed the sorption process was fast and bentazone could be efficiently removed in 30 minutes. The kinetic process of bentazone sorption on MIEX resin was well described by pseudo second-order model and intraparticle diffusion was the rate controlling step. The MIEX resin possessed the highest sorption capacity of 0.2656 mmol/mL for bentazone according to Langmuir fitting. Bentazone is a hydrophobic ionizable organic compound, and both ionic charge and hydrophobic aromatic structure governed the sorption characteristics on MIEX resin. The different removal efficiencies of ionic and non-ionic pesticides, combined with the charge balance equations of bentazone, SO 4 2− , NO 3 − and Cl − , indicated that removal of bentazone using MIEX resin occurred primarily via ion exchange.

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Section: Isotherm Studymentioning

confidence: 80%

Removal of bentazone from micro-polluted water using MIEX resin: Kinetics, equilibrium, and mechanism

Liu

Yan

Drikas

et al. 2011

Journal of Environmental Sciences

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“…Reduction in UVA254 followed a similar trend as DOC removal for MIEX resin and alum coagulation [29]. Many subsequent researchers have shown similar results of high-DOC and UVA254 removal by MIEX resin [18,23,[30][31][32][33][34][35][36][37]. For example, Boyer and Singer showed greater removals of DOC and UVA254 by MIEX resin than alum coagulation across four different raw waters with the extent of removal increasing as the specific UVA254 (SUVA254) of the raw water increased from 2.0 to 3.8 L/mg·m [31].…”

Section: Jar Testsmentioning

confidence: 52%

“…The adverse impact of alkalinity on bromide removal suggests competition between bicarbonate and bromide for exchange sites on the resin as bicarbonate is present at several orders of magnitude higher concentration than bromide. Others have also reported higher bromide removal by MIEX resin in low alkalinity water than higher alkalinity water [31,33,67••], with the order of increasing competition with bromide being chloride<bicarbonate/carbonate<sulfate [68]. In contrast to the results for bromide, increasing alkalinity did not affect iodide removal by MIEX resin [67••].…”

Section: Removal Of Inorganic and Synthetic Organic Chemicals Inorganmentioning

confidence: 94%

“…For example, Boyer and Singer showed similar removal of hydrophobic acid, transphilic acid, and hydrophilic acid fractions of DOC by MIEX resin [31], and Humbert et al showed that MIEX resin removed both low and high apparent molecular weight fractions of DOM [33]. Others have shown that MIEX resin preferentially removes transphilic and hydrophilic fractions of DOM relative to PAC adsorption [42], and MIEX resin removes a wider range of apparent molecular weight fractions of DOM than PAC or alum coagulation [43•].…”

Section: Jar Testsmentioning

confidence: 99%

“…However, the effectiveness of MIEX resin to remove both bromide and DOC has shown mixed results. Depending on the water source and MIEX resin dose, bromide removal by MIEX resin can vary from >90 to <10 % [6,25,[31][32][33]41]. However, an explanation for the variable removal of bromide by MIEX resin is often lacking from a discussion of the results.…”

Section: Removal Of Inorganic and Synthetic Organic Chemicals Inorganmentioning

confidence: 99%

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Removal of Dissolved Organic Matter by Magnetic Ion Exchange Resin

Boyer

2015

Curr Pollution Rep

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This article provides a state-of-the-art review on the uses of magnetic ion exchange (MIEX) resin in drinking water and wastewater treatment, with emphasis on removal of dissolved organic matter (DOM) from drinking water and wastewater, regeneration efficiency, removal of inorganic and synthetic organic chemicals, comparison with other anion exchange resins, and integration with other physical-chemical processes. Through laboratory jar tests, pilot plant tests, and full-scale installations for a variety of drinking water sources, MIEX resin can achieve 30-80 % removal of dissolved organic carbon (DOC), which is often higher than alum or ferric coagulation. In addition, MIEX resin has been shown to remove hydrophilic, transphilic, and hydrophobic fractions of DOM and a wide range of molecular weight fractions of DOM. As a result, MIEX pretreatment results in substantial reductions in the formation of trihalomethanes and haloacetic acids upon chlorination. MIEX resin can achieve bromide removal in the range of 10-50 %, with higher bromide removal in waters with low DOC, low alkalinity, and low sulfate. However, there are commercially available anion exchange resins that are more selective for bromide than MIEX resin. MIEX resin has been investigated in combination with coagulation, activated carbon adsorption, membrane separation, lime softening, and ozonation. MIEX pretreatment has been shown to reduce downstream chemical requirements and improve the operation of downstream processes. This is most evident for coagulation and ozonation where the coagulant dose can be reduced by 50-75 % and the ozone concentration can be increased by 40-65 %. In general, MIEX pretreatment shows minor reductions in membrane fouling. Future research should continue to investigate the integration of MIEX treatment with other processes.

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Preparation and use of magnetic poly(glycidyl methacrylate) resin in drinking water treatment

Chen

Liu

2013

J of Applied Polymer Sci

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Magnetic poly(glycidyl methacrylate) (m-PGMA) was synthesized and characterized, and its efficiency in removing natural organic matter (NOM) and carbamazepine (CBZ) from synthetic water was studied. The effects of factors such as time and m-PGMA dosage on NOM removal were investigated. Furthermore, magnetic ion exchange resin (MIEX V R ) was used for comparison with m-PGMA in CBZ removal. m-PGMA was found to have a strong magnetic character whose specific saturation magnetization and mass fraction of magnetite were 10.79 emu g À1 and 6.166 wt %, respectively, thus providing additional utility for m-PGMA in slurry form in completely mixed continuous-flow reactors. Lab-scale studies showed that the removal rate rose rapidly with time and reached a pseudo-equilibrium after 30 min. In addition, the highest doses of m-PGMA achieved the highest removal efficiency. After 30 min of contact with 5, 10, and 15 mL L À1 of m-PGMA, the removal rates, based on UV absorbance measurements at 254 nm (UV 254 ), were 56%, 67%, and 79%, respectively, whereas the removal rates of dissolved organic carbon (DOC) were 53%, 60%, and 72%, respectively. Additionally, the scale ultraviolet absorbance values (SUVA) decreased during a 30 min contact time, thereby suggesting that the NOM removed by m-PGMA had greater aromatic character. In multiple-loading tests, UV 254 removal gradually decreased and achieved 18.39% at 1600 bed volume; it was kept constant at this level. Compared to MIEX V R , m-PGMA had a higher CBZ removal rate (27.8% and 34.7% for 20 mL L À1 and 25 mL L À1 of m-PGMA, corresponding to the removal of 200 lg L À1 CBZ).The resulting higher removal rate of CBZ contributed to stronger adsorption, a higher specific surface area, and larger pore volume.

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Performance of selected anion exchange resins for the treatment of a high DOC content surface water

Cited by 172 publications

References 13 publications

Removal of bentazone from micro-polluted water using MIEX resin: Kinetics, equilibrium, and mechanism

Removal of bentazone from micro-polluted water using MIEX resin: Kinetics, equilibrium, and mechanism

Removal of Dissolved Organic Matter by Magnetic Ion Exchange Resin

Preparation and use of magnetic poly(glycidyl methacrylate) resin in drinking water treatment

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