Investigation of 2,4-dichlorophenoxyacetic acid adsorption onto MIEX resin: Optimization using response surface methodology

Zhang, Xinxi; Lu, Xian; Sheng, Li; Ming, Zhong; Shi, Xiaodong; Luo, Gang; Ding, Lei

doi:10.1016/j.jtice.2014.02.012

Cited by 39 publications

(16 citation statements)

References 30 publications

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“…Based on Equation (4), the predicted removal efficiency of GA was calculated and summarized in Table 2. The predicted responses vary from 0.65% to 93.56%, indicating that GA removal is related to the parameters selected in this study [37].…”

Section: Fitting Of Regression Model Equationmentioning

confidence: 87%

Process Parameters Optimization of Gallic Acid Removal from Water by MIEX Resin Based on Response Surface Methodology

et al. 2020

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In this work, the response surface methodology was used to optimize the process parameters of gallic acid adsorption on magnetic ion exchange (MIEX) resin. Based on Box-Behnken Design, a quadratic polynomial model equation including solution pH, gallic acid concentration, MIEX resin dosage and adsorption time was established. The reliability of the established regression equation was tested by variance analysis. Based on the regression equation, the technical parameters for gallic acid adsorption on MIEX resin were optimized and the effects of interaction between variables on the removal of gallic acid were analyzed. The results showed that the established regression equation was reliable and could effectively predict the removal of gallic acid. The optimal technical parameters were determined to be a pH of 9.17, a gallic acid concentration of 8.07 mg/L, a resin dosage of 0.98 mL/L and an adsorption time of 46.43 min. The removal efficiency of gallic acid was 97.93% under the optimal parameters. The interaction between pH and adsorption time had the most significant effect on the removal of gallic acid. The results of this study demonstrated that MIEX resin can remove gallic acid efficiently and relatively quickly under the condition of optimal technical parameters.

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Section: Fitting Of Regression Model Equationmentioning

confidence: 87%

Process Parameters Optimization of Gallic Acid Removal from Water by MIEX Resin Based on Response Surface Methodology

et al. 2020

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“…The efficiency of NOM removal in the ion-exchange process was investigated using MIEX ® (Orica Watercare), polyacrylic, macroporous, strong base anion exchange resin. Resin characteristics can be found in literature [15][16][17]. In these tests the water taken after sedimentation from the "Mokry Dwór" WTP was fed with proper amount of resin.…”

Section: Methodsmentioning

confidence: 99%

Characteristics of natural organic matter removed from water along with its treatment

Urbanowska¹,

Kabsch-Korbutowicz²

2016

Environment Protection Engineering

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The object of this study was to examine the nature of natural organic matter (NOM) removed on each stage of water treatment train used in the "Mokry Dwór" Wrocław Water Treatment Plant (WTP) and to compare obtained results with water treatment efficiencies achieved with the use of membrane ultrafiltration, ion-exchange and UF/ion-exchange integrated processes. In the experiments fractional analysis with the use of polymeric resins (DAX-8, XAD-4 and IRA-958) was used. Obtained results have shown that most (56%) of the raw water NOM was found in fraction characterized by presence of humic and fulvic acids (VHA and SHA fractions). VHA fraction made the most of DOC removed in examined water treatment train and coagulation was mainly responsible for this effect. Integrated process consisting of MIEX ® DOC ion exchange and PES 10 kDa ultrafiltration turned out to be very effective at high molecular weight hydrophobic compounds removal from water being much less efficient with hydrophilic compounds.

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“…The functional groups present in synthetic organic chemicals that make these chemicals amenable to anion exchange are the same functional groups present in DOM that allow for anion exchange [65,74]. For anionic chemicals, such as bentazone and 2,4-dichlorophenoxyacetic acid [74][75][76], MIEX resin shows high removal up to 99 %, whereas for non-ionic chemicals, such as atrazine and isoproturon, MIEX resin shows negligible removal [33]. MIEX resin removed approximately 40 % of estrone at pH 8 (neutral molecule) and removal increased to approximately 70 % at pH 12 where estrone is negatively charged [77].…”

Section: Synthetic Organic Chemicalsmentioning

confidence: 99%

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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Investigation of 2,4-dichlorophenoxyacetic acid adsorption onto MIEX resin: Optimization using response surface methodology

Cited by 39 publications

References 30 publications

Process Parameters Optimization of Gallic Acid Removal from Water by MIEX Resin Based on Response Surface Methodology

Process Parameters Optimization of Gallic Acid Removal from Water by MIEX Resin Based on Response Surface Methodology

Characteristics of natural organic matter removed from water along with its treatment

Removal of Dissolved Organic Matter by Magnetic Ion Exchange Resin

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