Adsorptive Removal of 2,4-Dichlorophenoxyacetic Acid (2,4-D) from Aqueous Solutions Using MIEX Resin

Ding, Lei; Lu, Xian; Deng, Huiping; Zhang, Xinxi

doi:10.1021/ie300469h

Cited by 93 publications

(59 citation statements)

References 57 publications

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“…detected in surface and ground water all over the world [3]. It can not only pose a threat to aquatic life and ecosystem [4], but also was proved to be toxic to humans and animals [5]. Accordingly, the removal of 2,4-D from environment became an urgent issue.…”

Section: Introductionmentioning

confidence: 99%

Adsorption of 2,4-D on magnetic graphene and mechanism study

Liu

Yang

et al. 2016

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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Section: Introductionmentioning

confidence: 99%

Adsorption of 2,4-D on magnetic graphene and mechanism study

Liu

Yang

et al. 2016

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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“…Therefore, the Freundlich isotherm model is reliable for describing the adsorption equilibrium performances of TA on MIEX resin. The Langmuir model assumes that the adsorption occurs at the homogeneous surface, adsorbate is adsorbed on the surface of adsorbent in a monolayer behavior, and no interaction exists among the adsorbed species [46]. For a complex adsorption system, however, it is far more difficult to satisfy these harsh demands.…”

Section: Adsorption Equilibriummentioning

confidence: 99%

Removal Characteristics of Tanic Acid Adsorbed on MIEX Resin

Ding¹,

Zhu²,

Du³

et al. 2017

Pol. J. Environ. Stud.

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Tannic acid (TA) is a component of natural organic matter (NOM) and is ubiquitously present in most surface and groundwater due to the decomposition of plant biomass [1][2]. Previous research has demonstrated that TA is toxic for aquatic organisms such as algae, phytoplankton, fish, and invertebrates, which can cause serious environment problems [3]. Particularly, TA can react with chlorine and form carcinogenic disinfection by-products (DBPs) during the conventional chlorination disinfection process of drinking water [4][5]. Therefore, it is necessary to seek effective methods for reducing and removing TA from raw water. [12,16] have been utilized to remove TA from water and wastewater. Among different adsorbents, the anion ion-exchange resin is considered one of the most effective methods due to its high removal efficiency [17]. As a novel anion ionexchange resin, magnetic ion exchange (MIEX) resin can be a potential candidate for TA removal with its promising technology for NOM removal from drinking water [18].Pol. J. Environ. Stud. Vol. 26, No. 3 (2017) This study evaluated the removal characteristics of tanic acid (TA) adsorbed on MIEX resin by batch experiments. MIEX resin can effectively remove TA from raw water at pH 6-9. Chloride and sulfate have adverse effect on the removal of TA. Conversely, bicarbonate can further the removal of TA. The Elovich model is the most suitable for depicting the kinetic process, and liquid film diffusion dominates the adsorption rate. The Freundlich model is reliable for describing the adsorption equilibrium. Adsorption is an endothermic, entropy-driving, and thermodynamically spontaneous process. The energy changes confirm the physical adsorption and dominate adsorption behavior. The sodium chloride solution (0.5%) can effectively regenerate the MIEX resin saturated TA, and the regenerated resin can be used circularly. Therefore, MIEX resin is a promising adsorbent for the removal of TA from raw water.

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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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Adsorptive Removal of 2,4-Dichlorophenoxyacetic Acid (2,4-D) from Aqueous Solutions Using MIEX Resin

Cited by 93 publications

References 57 publications

Adsorption of 2,4-D on magnetic graphene and mechanism study

Adsorption of 2,4-D on magnetic graphene and mechanism study

Removal Characteristics of Tanic Acid Adsorbed on MIEX Resin

Removal of Dissolved Organic Matter by Magnetic Ion Exchange Resin

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