Efficient arsenic removal by cross-linked macroporous polymer impregnated with hydrous iron oxide: Material performance

Taleb, Khaled; Markovski, Jasmina; Milosavljević, Milan; Marinović‐Cincović, Milena; Rušmirović, Jelena; Ristić, Mirjana; Marinković, Aleksandar D.

doi:10.1016/j.cej.2015.04.147

Cited by 53 publications

(25 citation statements)

References 53 publications

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“…The time for effluent concentration to reach the input concentration was 120 to 250 h, in comparison to 70 to 210 h when bismuth impregnated aluminum oxide was used for As removal [17]. The number of PVs to reach full breakthrough was 32 and 80 in this study, while the PV was 15 and 35 for As transport through columns packed with cross-linked macroporous polymer impregnated with hydrous iron oxide [18]. The total output volume with an effluent As concentration less than 10 ppb was about 450-550 mL.…”

Section: Column Results On As Removalmentioning

confidence: 73%

Using Ionic Liquid Modified Zeolite as a Permeable Reactive Wall to Limit Arsenic Contamination of a Freshwater Lake—Pilot Tests

Liao

et al. 2018

Water

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Arsenic (As) contamination of surface water has long been a threat to human health. Extensive studies were made at the bench-scale for the removal of As from water. Commonly-used materials for the removal of As include Al and Fe hydroxides that will form complexes with As. Recently, modification of Earth materials to reverse their surface charge to positive to reduce the mobility of arsenite and arsenate also attracted great attention. In 2008, a severe As contamination was reported in the lake of Yangzonghai, Yunnan, China. Although the As concentration was maintained below 0.05 mg/L for the lake, after 28 months of restoration, the discharge of mine tailings from a nearby fertilizer plants was still one of the contributors to the As in the lake. In this study, zeolite was modified by ionic liquids and the modified materials were installed as a permeable reactive wall (PRW) to contain the As movement. Preliminary results showed more than an 80% reduction in As after surface water moved through the PWR over the six-month sampling period confirming the effectiveness of ionic liquid-modified Earth materials for environmental application.

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Section: Column Results On As Removalmentioning

confidence: 73%

Using Ionic Liquid Modified Zeolite as a Permeable Reactive Wall to Limit Arsenic Contamination of a Freshwater Lake—Pilot Tests

Liao

et al. 2018

Water

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“…Similar phenomena were observed by other researchers (Table S3). Zhang et al found that the diffusion of As (V) within the pores of the magnetite ACFs was more rapid than that of the raw ACF. Tawabini et al studied As (III) adsorption onto raw multiwalled carbon nanotubes (MCNTs) and iron oxide‐modified MCNTs (Fe‐MCNTs).…”

Section: Resultsmentioning

confidence: 99%

Novel composite sorbents based on carbon fibers decorated with ferric hydroxides—Arsenic removal

Şimşek

Novak

Berek

et al. 2018

Asia-Pacific J Chem Eng

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Carbon fibers (CF) were prepared by carbonization of cellulose and further deposited with ferric hydroxide (CF–Fe). The synthesized CF and CF–Fe composites were employed to remove arsenate from aqueous solution. CF–Fe samples with different amount of Fe (3, 7, 11, and 20 wt.%) were characterized using SEM‐EDX, XPS, FTIR, BET, pH titration, and zeta potential measurements. Batch isotherm studies were performed to determine the As (V) adsorption performance of both raw CF and CF–Fe. CF–Fe composites exhibited significantly higher As (V) adsorption capacity compared with raw CF, namely, 167.95 versus 412.8 μg/g and for raw CF and CF–Fe (3%), respectively. The presence of Cl− and SO42− only slightly affected the As (V) adsorption, whereas competitive adsorption displayed the highest influence of PO43−, followed by F− and CO32−. The results revealed that both coulombic interactions and surface complexation reactions play important role in the As (V) adsorption process.

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“…24,25 Due to different properties of NC (32.4 m 2 g -1 ) and the synthesized materials, higher values for the specific surface area were obtained for both NC-PEG and NC-PEG/FO. Additionally, the shift of the pH PZC value indicated specific arsenate adsorption rather than electrostatic interaction, [25][26][27] as well as formation of complexed/precipitated arsenic species at the surface of the goethite based adsorbent. The determination of the iron content in an acidic extract, obtained by using 10 % nitric acid and microwave digestion, showed that 11.7 % of the iron was precipitated in goethite form at the NC-PEG surface.…”

Section: Textural Properties and Ph Pzc Of The Synthesized Adsorbentsmentioning

confidence: 99%

“…It was shown in a previous work that the optimal pH for As(V) removal in a presence of goethite modified macroporous resin was 6-6.5, and this value was used in the present work. 26,27 The adsorption capacity was evaluated by using a non-linear regression method with commonly used isotherm models: Langmuir, Freundlich, Redlich--Peterson and Dubinin-Radushkevich (D-R). The highest correlation coefficients were obtained by using the D-R equation for NC-PEG and Freundlich model for NC-PEG/FO (the data are given in Fig.…”

Section: Adsorption Study: Pollutants Removal By Nc-peg and Nc-peg/fomentioning

confidence: 99%

Efficient pollutants removal by amino-modified nanocellulose impregnated with iron oxide

Taleb

Rusmirovic²,

Rančić

et al. 2016

J Serb Chem Soc

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A novel adsorbent, NC-PEG, obtained by modification of nanocellulose (NC) with PEG-6-arm amino polyethylene glycol (PEG-NH 2) via maleic anhydride (MA) linker, was used for removal of Cd 2+ and Ni 2+ from water. A subsequent precipitation of iron oxide (FO) from goethite on NC-PEG was employed to produce NC-PEG/FO adsorbent which was used for As(V) and As(III) removal. In a batch test, the influence of pH, contact time, initial ion concentration and temperature on the adsorption efficiency were studied. The maximum adsorption capacities found for Cd 2+ and Ni 2+ , obtained by the use of Langmuir model, were 37.9 and 32.4 mg g-1 at 25 °C, respectively. Also, high As(V) and As(III) removal capacities of 26.0 and 23.6 mg g-1 were obtained. The thermodynamic parameters indicated endothermic, feasible and spontaneous nature of the adsorption process. The kinetic study, i.e., fitting by Weber-Morris model predicted that intra-particle diffusion was the ratecontrolling step. The ability for multi-cycle reusability of both NC-PEG and NC-PEG/FO, represents a positive indicator when considering their possible applications.

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Efficient arsenic removal by cross-linked macroporous polymer impregnated with hydrous iron oxide: Material performance

Cited by 53 publications

References 53 publications

Using Ionic Liquid Modified Zeolite as a Permeable Reactive Wall to Limit Arsenic Contamination of a Freshwater Lake—Pilot Tests

Using Ionic Liquid Modified Zeolite as a Permeable Reactive Wall to Limit Arsenic Contamination of a Freshwater Lake—Pilot Tests

Novel composite sorbents based on carbon fibers decorated with ferric hydroxides—Arsenic removal

Efficient pollutants removal by amino-modified nanocellulose impregnated with iron oxide

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