Arsenic Sorption Using Mixtures of Ion Exchange Resins Containing N-Methyl-D-Glucamine and Quaternary Ammonium Groups

Özkula, Gülşah; Urbano, Bruno F.; Rivas, Bernabé L.; Kabay, Nalan; Bryjak, Marek

doi:10.4067/s0717-97072016000100001

Cited by 9 publications

(12 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…At pH lower than 2.24, only nondissociated molecules of H 3 AsO 4 are present in solution. 9 , 15 , 39 − 41 Increasing the pH from 2 to 5, the adsorption of As(V) oxoanions increased and then monotonously decreased; this would indicate that at pH near to 5, there is an optimum concentration of H + for the adsorption of As(V) as H 2 AsO 4 – . 7 , 8 , 40 , 42 It was reported that the concentration of H 2 AsO 4 – as dominant species increases up to pH 6.96 (p K a 2 for H 3 AsO 4 ).…”

Section: Resultsmentioning

confidence: 99%

Optimization of Arsenic Removal from Aqueous Solutions Using Amidoxime Resin Hosted by Mesoporous Silica

Humelnicu

Ignat

Dinu³

et al. 2022

ACS Omega

View full text Add to dashboard Cite

The paper reports on the performances of cross-linked amidoxime hosted into mesoporous silica (AMOX) in the removal of As(III) and As(V). The optimum pH for sorption of As(III) and As(V) was pH 8 and pH 5, respectively. The PFO kinetic model and the Sips isotherm fitted the best the experimental data. The thermodynamic parameters were evaluated using the equilibrium constant values given by the Sips isotherm at different temperatures and found that the adsorption process of As(III) and As(V) was spontaneous and endothermic on all AMOX sorbents. The spent AMOX sorbents could be easily regenerated with 0.2 mol/L HCl solution and reused up to five sorption/desorption cycles with an average decrease of the adsorption capacity of 18%. The adverse effect of the co-existing inorganic anions on the adsorption of As(III) and As(V) onto the sorbent with the highest sorption capacity (AMOX3) was arranged in the following order: H 2 PO 4 – > HCO 3 – > NO 3 – > SO 4 2– .

show abstract

Section: Resultsmentioning

confidence: 99%

Optimization of Arsenic Removal from Aqueous Solutions Using Amidoxime Resin Hosted by Mesoporous Silica

Humelnicu

Ignat

Dinu³

et al. 2022

ACS Omega

View full text Add to dashboard Cite

show abstract

“…The percent removal of CrO 4 2versus sorbent dose is shown in Figure 2. The curve indicates that removal of CrO 4 2increases with increase in the sorbent dose due to the greater availability of the sorption sites [28]. The optimal amount of sorbent for CrO…”

Section: Effect Of Sorbent Dose On Cro4 2removalmentioning

confidence: 98%

Preparation of Anion-Exchange Cellulose for the Removal of Chromate

Arar

2019

J. Chil. Chem. Soc.

View full text Add to dashboard Cite

The quaternary ammonium group containing cellulose was prepared by the one-pot method and applied for the removal of chromate (CrO 4 2-) ions from aqueous solution. The prepared sorbent was characterized by using elemental analyzer and Fourier transform infrared (FTIR) spectroscopy. Its ion exchange behavior toward CrO 4 2ions was investigated as a function of sorbent dose and initial solution pH. The kinetic and sorption equilibrium experiments were also carried out in a batch system. Equilibrium data were best fitted with the Langmuir model and the maximum ion exchange capacity of the sorbent was found as 3.8 mg of CrO 4 2-/g sorbent. Moreover, the removal of CrO 4 2is achieved within 5 minutes. Furthermore, the calculated thermodynamic parameters disclosed that the ion exchange reaction is feasible, spontaneous and exothermic. In addition, the CrO 4 2ions can be desorbed from the sorbent by 1.0 M HCl solution with 95% regeneration efficiency.

show abstract

“…According to the UCM model, the rate is controlled by the reaction layer for the P(AAGA-co-APSA) and P(APSA-co-AAc) resins, and chemical reaction for the P(AAGAco-ESS) and P(AAm-co-ESS) resins. According to the ISV model, the rate determining step is film diffusion (diffusion through a film/boundary layer at the external surface of the particle / back diffusion through the film/boundary layer at the particle surface) for the P(AAGA-co-APSA), P(AAGA-co-ESS) and P(APSA-co-AAc) resins, whereas it is particle diffusion (pore diffusion of the ions to the active sites / pore diffusion of the ions outward through the particle from the active sites)for the P(AAm-co-ESS) resin [31].…”

Section: Batch Elutionmentioning

confidence: 99%

Cr(III) REMOVAL FROM AQUEOUS SOLUTION BYION EXCHANGE RESINS CONTAINING CARBOXYLIC ACID AND SULPHONIC ACID GROUPS

Rivas

Morales

Kabay

et al. 2018

J. Chil. Chem. Soc.

Self Cite

View full text Add to dashboard Cite

Ion exchange resins based on the water-insoluble polymers poly(acrylamide-co-styrene sodium sulfonate) (P(AAm-co-ESS)), poly(2-acrylamide-2-methyl-1-propanesulfonic acid-co-acrylicacid) (P(APSA-co-AAc)),poly(2-acrylamidoglycolic acid-co-2-acrylamide-2-methyl-1-propane sulfonic acid) (P(AAGA-co-APSA)), and poly(2-acrylamidoglycolic acid-co-4-styrene sodium sulfonate) (P(AAGA-co-ESS)) were synthesized by radical polymerization. These polymers were employed to remove Cr(III) from an aqueous solution. The optimum sorption parameters of amount of resin and sorption time were obtained through batchmode sorption tests. Following batch elution tests to identify the best eluting agent. Finally,the column-mode sorption/elution behaviors of ion exchange resins were studied. The ion exchange resins exhibited excellent removal of Cr(III). The P(AAGA-co-APSA) resin exhibited 89.4% removal, while P(AAGA-co-ESS) displayed 88.3%, P(AAm-co-ESS) 86.8%, and P(APSA-co-AAc) 89.3%. The column-mode was studied by theP(AAGA-co-APSA) resingave a breakthrough capacity of 1.5 mg Cr(III)/mL resin in the first cycle. The elution efficiency was almost 100%. The breakthrough capacity was 1.2 mg Cr(III)/mL resin in the second cycle. The elution efficiency was 90.2% in the second cycle.

show abstract

Arsenic Sorption Using Mixtures of Ion Exchange Resins Containing N-Methyl-D-Glucamine and Quaternary Ammonium Groups

Cited by 9 publications

References 32 publications

Optimization of Arsenic Removal from Aqueous Solutions Using Amidoxime Resin Hosted by Mesoporous Silica

Optimization of Arsenic Removal from Aqueous Solutions Using Amidoxime Resin Hosted by Mesoporous Silica

Preparation of Anion-Exchange Cellulose for the Removal of Chromate

Cr(III) REMOVAL FROM AQUEOUS SOLUTION BYION EXCHANGE RESINS CONTAINING CARBOXYLIC ACID AND SULPHONIC ACID GROUPS

Contact Info

Product

Resources

About