Arsenic adsorption by iron–aluminium hydroxide coated onto macroporous supports: Insights from X-ray absorption spectroscopy and comparison with granular ferric hydroxides

Kumar, Prashanth Suresh; Quiroga-Flores, Roxana; Sjöstedt, Carin; Önnby, Linda

doi:10.1016/j.jhazmat.2015.09.065

Cited by 47 publications

(3 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As one of the highly poisonous and hazardous heavy metal elements in water, arsenic mainly occurred in the forms of As(III) and As(V) in the natural water environment [1][2][3][4][5]. As(V) is dominant in oxidizing conditions and mainly exists in the form of H 2 AsO 4 and HAsO 4 2-…”

Section: Introductionmentioning

confidence: 99%

Enhanced Arsenic Removal from Aqueous Solution by Fe/Mn-C Layered Double Hydroxide Composite

Wang

Gao

Zhu

et al. 2021

Adsorption Science & Technology

View full text Add to dashboard Cite

A novel material named Fe/Mn-C layered double hydroxide composite (Fe/Mn-C-LDH) was synthesized to remove arsenic from an aqueous solution. The removal performance of the composite toward arsenic ions was studied through the batch experiments. The experiment results showed that Fe/Mn-C-LDH exhibited a high adsorption capacity of 46.47 mg/g for As(III) and 37.84 mg/g for As(V) at 318 K, respectively. In addition, the investigation of the release of Fe3+ and Mn2+ in the process of arsenic adsorption revealed that the Fe/Mn-C-LDH exhibited better stability than Fe/Mn-layer double hydroxide (Fe/Mn-LDH) with fewer Mn2+ and Fe3+ releasing under the same condition. The BET results showed that the specific surface area of Fe/Mn-C-LDH decreased after adsorption of As (III) and As (V). Furthermore, the Density Functional Theory (DFT) calculation results proved that the adsorbent combining arsenic by T-site to produce a better adsorption effect for arsenic. Possessing better stability and adsorption capacity, Fe/Mn-C-LDH could potentially serve as a perfect adsorbent for arsenic removal from an aqueous environment. It would provide a promising approach for removing heavy metal from the aquatic environment in the future.

show abstract

Section: Introductionmentioning

confidence: 99%

Enhanced Arsenic Removal from Aqueous Solution by Fe/Mn-C Layered Double Hydroxide Composite

Wang

Gao

Zhu

et al. 2021

Adsorption Science & Technology

View full text Add to dashboard Cite

show abstract

“…Therefore, different procedures, such as ion exchange, adsorption, precipitation, and membrane techniques have been studied for AS removal from aqueous solutions, among which, adsorption technique is more popular and practical, cost-effective, easy to use, which has a good efficiency (1)(2)(3). Different adsorbents have been studied for As removal, such as hydroxides and oxides of iron(III) (1,(3)(4)(5), hydroxides and oxides of aluminum (1,6), activated carbon (7), chitosan (8,9), activated alumina (10), zinc oxide (1,11), biosorbent (9,12), layered double hydroxides (LDH s ) (13)(14)(15)(16)(17)(18)(19), and magnetic Fe 3 O 4 -graphene (20). LDHs are known as inorganic compounds which have a structure similar to clays.…”

Section: Introductionmentioning

confidence: 99%

A new magnetic bio-sorbent for arsenate removal from the contaminated water: Characterization, isotherms, and kinetics

Adlnasab

Djafarzadeh

Maghsodi

2020

Environ Health Eng Manag

View full text Add to dashboard Cite

Background: Arsenic (AS) is a heavy metal pollutant in water that has been known as one of the most important environmental contaminants due to its serious effects on both human health and the environment. This study was conducted to investigate the efficiency of calcined Co/Fe/Al LDH@Fe 3 O 4 @ PA as a new magnetic bio-sorbent for AS removal from the polluted water. Methods: At first, magnetic ternary calcined layered double hydroxide (Co/Fe/Al LDH) was synthesized through co-precipitation procedure. The synthesized CLDH was modified with phenylalanine amino acid, named CLDH@Fe 3 O 4 @PA. Infrared spectroscopy, X-ray diffraction, transmission, and field emission scanning electron microscopy (FESEM) were used to confirm the synthesis of the sorbent. The removal time, pH, and the sorbent dose were studied and optimized as the effective parameters on the As (V) removal. Results: The XRD, FTIR, TEM, SEM, EDS, and VSM techniques confirmed the properties of the synthesized magnetic bio-sorbent. Based on the optimization study, pH=6, the sorbent concentration of 30 mg, and the removal time of 5 minutes were considered as the optimum conditions with about 91% AS removal. The Langmuir isotherm with higher R 2 value was matched well with the obtained results, and values obtained for q m and R L were 167 mg g -1 and 0.976 to 0.993, respectively. The kinetics studies were fitted well with the linear pseudo-first-order model with higher R 2 at sorption process. Conclusion: The real samples results confirmed the excellent As (V) sorption capacity of the synthesized magnetic bio-sorbent in comparison with other sorbents. Therefore, CLDH@Fe 3 O 4 @PA sorbent is introduced as a new suitable sorbent for removal of As (V) from the polluted water.

show abstract

“…Biopolymers have been specifically targeted for their biodegradability; for example, Singh et al used alginate beads cross-linked with iron chloride and Gupta et al used chitosan beads embedded with iron nanoparticle . Kumar et al used porous polyacrylamide as a polymeric host for iron–aluminum hydroxide particles showing success in removing both As(III) and As(V) ions . Functionalized polystyrene beads have been commonly used as a support for iron-based nanoparticles.…”

Section: Introductionmentioning

confidence: 99%

Porous Hydrogels Embedded with Hydrated Ferric Oxide Nanoparticles for Arsenate Removal

Zowada

Foudazi

2019

ACS Appl. Polym. Mater.

View full text Add to dashboard Cite

The aim of this work is to assess the capabilities of porous hydrogels functionalized with hydrated ferric oxide nanoparticles to remove arsenate from aqueous media. Iron oxide nanoparticles can effectively remove arsenic through ionic interactions, binding the arsenic species to the nanoparticle. The use of polymeric hosts to these nanoparticles enhances the recovery of adsorbent after removal. The hydrogels were synthesized by high internal phase emulsion (HIPE) templating with 2-acrylamido-2-methyl-1-propanesulfonic acid (AMPS) as the base monomer. The porous hydrogel has a pore diameter range of 9–30 μm and a maximum water holding capacity of over 4000 wt %. The removal efficiency of the material is up to 60% for high concentrations of 4.5 ppm in a batch removal process.

show abstract

Arsenic adsorption by iron–aluminium hydroxide coated onto macroporous supports: Insights from X-ray absorption spectroscopy and comparison with granular ferric hydroxides

Cited by 47 publications

References 47 publications

Enhanced Arsenic Removal from Aqueous Solution by Fe/Mn-C Layered Double Hydroxide Composite

Enhanced Arsenic Removal from Aqueous Solution by Fe/Mn-C Layered Double Hydroxide Composite

A new magnetic bio-sorbent for arsenate removal from the contaminated water: Characterization, isotherms, and kinetics

Porous Hydrogels Embedded with Hydrated Ferric Oxide Nanoparticles for Arsenate Removal

Contact Info

Product

Resources

About