Arsenic selective adsorption using a nanomagnetic ion imprinted polymer: Optimization, equilibrium, and regeneration studies

Sadani, Mohsen; Rasolevandi, Tayebeh; Azarpira, Hossein; Mahvi, Amir Hossein; Ghaderpoori, Mansour; Mohseni, Seyed Mohsen; Atamaleki, Ali

doi:10.1016/j.molliq.2020.114246

Cited by 34 publications

(12 citation statements)

References 59 publications

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“…The theoretical maximum Sb(III) binding or adsorption capacity of IIP was also estimated using Scatchard plot obtained according to Equation (1).

where q e (mg/g) is the adsorption or binding capacity at equilibrium, C e is the residual concentration of Sb(III) at equilibrium, K d (mg/L) is the equilibrium dissociation constant at binding sites and q max (mg/g) is the maximum binding [ 32 ]. The values of K d and q max were calculated from the slope and the intercept of the linear plot of q e / C e versus q e [ 32 ].…”

Section: Resultsmentioning

confidence: 99%

“…

Section: Resultsmentioning

confidence: 99%

“…The general procedure for the synthesis of IIPs involves the formation of a metal ion (template) complex with a suitable ligand followed by copolymerisation in the presence of cross-linker, initiator and a monomer where a polymer matrix with recognition sites is formed [ 27 ]. Various researchers have reported they explored the use of IIPs as adsorbents for the removal and speciation of toxic trace metals, such as Hg(II) [ 28 ], Pb(II) [ 29 ], Co(II) [ 30 ], Pb(II) [ 31 ], As(II) [ 32 ], Sb(III) [ 19 , 26 ] and Cd(II) [ 33 ], among others. In addition, there are also reports on the use of novel molecular imprinted electrochemical sensor for the detection of different pollutants [ 34 , 35 , 36 , 37 , 38 ].…”

Section: Introductionmentioning

confidence: 99%

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Magnetic Ion Imprinted Polymers (MIIPs) for Selective Extraction and Preconcentration of Sb(III) from Environmental Matrices

et al. 2021

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Antimony(III) is a rare element whose chemical and toxicological properties bear a resemblance to those of arsenic. As a result, the presence of Sb(III) in water might have adverse effects on human health and aquatic life. However, Sb(III) exists at very ultra-trace levels which may be difficult for direct quantification. Therefore, there is a need to develop efficient and reliable selective extraction and preconcentration of Sb(III) in water systems. Herein, a selective extraction and preconcentration of trace Sb(III) from environmental samples was achieved using ultrasound assisted magnetic solid-phase extraction (UA-MSPE) based on magnetic Sb(III) ion imprinted polymer-Fe3O4@SiO2@CNFs nanocomposite as an adsorbent. The amount of antimony in samples was determined using inductively coupled plasma optical emission spectrometry (ICP-OES). The UA-MSPE conditions were investigated using fractional factorial design and response surface methodology based on central composite design. The Sb(III)-IIP sorbent displayed excellent selectivity towards Sb(III) as compared to NIIP adsorbent. Under optimised conditions, the enrichment factor, limit of detection (LOD) and limit of quantification (LOQ) of UA-MSPE/ICP-OES for Sb(III) were 71.3, 0.13 µg L−1 and 0.44 µg L−1, respectively. The intra-day and inter-day precision expressed as relative standard deviations (%RSDs, n = 10 and n = 5) were 2.4 and 4.7, respectively. The proposed analytical method was applied in the determination of trace Sb(III) in environmental samples. Furthermore, the accuracy of the method was evaluated using spiked recovery experiments and the percentage recoveries ranged from 95–98.3%.

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“…The theoretical maximum Sb(III) binding or adsorption capacity of IIP was also estimated using Scatchard plot obtained according to Equation (1).

Section: Resultsmentioning

confidence: 99%

“…

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Magnetic Ion Imprinted Polymers (MIIPs) for Selective Extraction and Preconcentration of Sb(III) from Environmental Matrices

et al. 2021

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“…Not much, to date, is known on the regeneration of IIPs for adsorption of heavy metals, however a study by Sadani et al (2020)…”

Section: Ion Imprinted Polymers As Adsorbentsmentioning

confidence: 99%

Recent developments in materials used for the removal of metal ions from acid mine drainage

Mokgehle

Tavengwa

2021

Appl Water Sci

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Acid mine drainage is the reaction of surface water with sub-surface water located on sulfur bearing rocks, resulting in sulfuric acid. These highly acidic conditions result in leaching of non-biodegradeable heavy metals from rock which then accumulate in flora, posing a significant environmental hazard. Hence, reliable, cost effective remediation techniques are continuously sought after by researchers. A range of materials were examined as adsorbents in the extraction of heavy metal ions from acid mine drainage (AMD). However, these materials generally have moderate to poor adsorption capacities. To address this problem, researchers have recently turned to nano-sized materials to enhance the surface area of the adsorbent when in contact with the heavy metal solution. Lately, there have been developments in studying the surface chemistry of nano-engineered materials during adsorption, which involved alterations in the physical and chemical make-up of nanomaterials. The resultant surface engineered nanomaterials have been proven to show rapid adsorption rates and remarkable adsorption capacities for removal of a wide range of heavy metal contaminants in AMD compared to the unmodified nanomaterials. A brief overview of zeolites as adsorbents and the developent of nanosorbents to modernly applied magnetic sorbents and ion imprinted polymers will be discussed. This work provides researchers with thorough insight into the adsorption mechanism and performance of nanosorbents, and finds common ground between the past, present and future of these versatile materials.

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“…Typically, different methods are used to remove heavy metals from water such as the coagulation method, online dialysis, ion exchange chromatographic process, chemical precipitation, adsorption, electrolytic process, solvent extraction, and reverse osmosis [15][16][17][18][19][20][21]. Among these techniques, adsorption is efficient, low cost and environmentally friendly technique [22][23][24][25][26]. In adsorption, different natural and synthetic adsorbents are used [27][28][29].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of new functionalized Calix[4]arene modified silica resin for the adsorption of metal ions: Equilibrium, thermodynamic and kinetic modeling studies

Jalbani

Solangi

Memon

et al. 2021

Journal of Molecular Liquids

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In this study, a new efficient resin-based material has been synthesized through the surface modification of silica by functionalized calix [4]arene and applied for the adsorption of metal ions from aqueous media. The synthesis of functionalized calix[4]arene modified silica (FCMS) resin was characterized by FTIR, CHNS, BET surface area, SEM analyses. The FCMS resin has high thermal and chemical stabilities that were checked by the thermogravimetric analysis and various acidic/basic conditions. The efficiency of the FCMS resin was checked by performing a set of batch experiments under optimized parameters such as concentration of the metal solution, pH, resin dosage, time, temperature, and competitive adsorption in mixed solutions. The results showed that better adsorption has been achieved at pH 7, with 25 mg adsorbent dosage and 10 min contact time. The equilibrium kinetic study showed that the metal adsorption follows the pseudo 2nd order kinetic model with quite high coefficients of determination values (R 2 > 0.99). The experimental data have been validated by applying three adsorption isotherm models and the results revealed that the Freundlich isotherm model (R 2 > 0.99) was the best fit for the adsorption of Cu 2+ , Pb 2+ , and Cd 2+ ions. However, the sorption energy calculated from the D-R isotherm model for Cu 2+ , Pb 2+ , and Cd 2+ ions suggested that an ion-exchange mechanism is involved on the surface of the FCMS resin. The thermodynamic data demonstrated that the reaction is spontaneous and endothermic. The FCMS resin was also applied on real wastewater samples and the results demonstrated that the resin has a good ability to treat metal-contaminated wastewater.

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Arsenic selective adsorption using a nanomagnetic ion imprinted polymer: Optimization, equilibrium, and regeneration studies

Cited by 34 publications

References 59 publications

Magnetic Ion Imprinted Polymers (MIIPs) for Selective Extraction and Preconcentration of Sb(III) from Environmental Matrices

Magnetic Ion Imprinted Polymers (MIIPs) for Selective Extraction and Preconcentration of Sb(III) from Environmental Matrices

Recent developments in materials used for the removal of metal ions from acid mine drainage

Synthesis of new functionalized Calix[4]arene modified silica resin for the adsorption of metal ions: Equilibrium, thermodynamic and kinetic modeling studies

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