Synthesis, characterization and performance in arsenic removal of iron-doped activated carbons prepared by impregnation with Fe(III) and Fe(II)

Muniz, G. I. B. de; Fierro, Vanessa; Furdin, G.; Sánchez, Guillermo González; Ballinas-Casarrubias, Lourdes

doi:10.1016/j.jhazmat.2008.10.074

Cited by 117 publications

(44 citation statements)

References 43 publications

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“…The authors reported that more than 99.0 % of uptake was obtained within the pH range of 6-8. In this research, higher adsorption capacities compared to the research by Vitela-Rodriguez and Rangel-Mendez (2013) and Muñiz et al (2009) were obtained, probably due to the treatment technique of adsorbent which is the microwave hydrothermal (MH) technique, but another important detail is that the used initial arsenic concentrations were higher than compared to the initial concentration of 20 mg L −1 in the study by Yürüm et al (2014). Attia et al (2014) prepared magnetic nanoparticle (γ-Fe 2 O 3 )-coated zeolite (MNCZ) for arsenic ion removal from an aqueous solution.…”

Section: Iron(iii)-cerium(iv) Mixed Oxide (Nicmo)mentioning

confidence: 43%

“…Modified and activated carbons and zeolites Muñiz et al (2009) reported that iron-doped activated carbons (ACs) are much more efficient for As uptake, and therefore, a number of samples were synthesized by impregnation of raw and oxidized ACs with HCl aqueous solutions of either FeCl 3 or FeCl 2 at various concentrations and various pH values. Fe was homogenously distributed in the form of nanoparticles.…”

Section: Iron(iii)-cerium(iv) Mixed Oxide (Nicmo)mentioning

confidence: 99%

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Arsenic removal by nanoparticles: a review

Habuda-Stanić

Nujić

2015

Environ Sci Pollut Res

158

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Contamination of natural waters with arsenic, which is both toxic and carcinogenic, is widespread. Among various technologies that have been employed for arsenic removal from water, such as coagulation, filtration, membrane separation, ion exchange, etc., adsorption offers many advantages including simple and stable operation, easy handling of waste, absence of added reagents, compact facilities, and generally lower operation cost, but the need for technological innovation for water purification is gaining attention worldwide. Nanotechnology is considered to play a crucial role in providing clean and affordable water to meet human demands. This review presents an overview of nanoparticles and nanobased adsorbents and its efficiencies in arsenic removal from water. The paper highlights the application of nanomaterials and their properties, mechanisms, and advantages over conventional adsorbents for arsenic removal from contaminated water.

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Section: Iron(iii)-cerium(iv) Mixed Oxide (Nicmo)mentioning

confidence: 43%

Section: Iron(iii)-cerium(iv) Mixed Oxide (Nicmo)mentioning

confidence: 99%

Arsenic removal by nanoparticles: a review

Habuda-Stanić

Nujić

2015

Environ Sci Pollut Res

158

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“…; that value compared to those of other similar adsorbents reported in literature is considered to be high (Table 2 [ [13][14][15]26,28,44,51,53,70]). A possible explanation is the surface chemistry and porosity of those materials which enhanced the arsenic removal.…”

Section: Arsenic (As) Ions Adsorptionmentioning

confidence: 77%

Activated carbons for the removal of heavy metal ions: A systematic review of recent literature focused on lead and arsenic ions

et al. 2015

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This work is a systematic review of the literature over the past decade of the application of activated carbon (microporous or mesoporous) as adsorbents for the removal of heavy metals, focusing especially on lead (Pb) and arsenic (As) ions from the aqueous phase. Classical examples from our lab are also given. Activated carbon is known to provide a high surface area for adsorption. Generally, surface modification is typically required, such as oxidation, treatment with ammonia or even impregnation with ferric ion, etc. and the adsorbent material may originate from various sources. The pristine materials, after modification and those after batch-wise adsorption, were characterized by available techniques (BET analysis, Fourier transform infrared spectroscopy, scanning electron microscopy, thermal analyses, X-ray photoelectron spectroscopy). Adsorption isotherms, thermodynamics and kinetics of the process are also discussed. Selected studies from the literature are examined in comparison with other adsorbents. The role of chemistry in the metals adsorption/removal was investigated.

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“…The surface area, micro pore volume and pore size of virgin bamboo charcoal and BC-Fe were determined by BET method using a Micrometrics ASAP 2000 system (Georgia, USA). The pH of the point of zero charge (pH pzc ) was determined using the method described by Muñiz et al (2009). The total iron loaded onto the bamboo charcoal was extracted using 50% (V/V) HCl according to the procedure proposed by Gu et al (2005) and analyzed by the ferrozine spectrophotometric method (Stookey 1970).…”

Section: Discussionmentioning

confidence: 99%

Arsenic Removal from Water by Iron-Modified Bamboo Charcoal

Liu

Xiong

et al. 2011

Water Air Soil Pollut

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The effectiveness of a novel and low-cost adsorbent, iron-modified bamboo charcoal (BC-Fe), for arsenic removal from aqueous systems was evaluated in this study. The BC-Fe was synthesized by loading iron onto bamboo charcoal via soaking in a ferric salt solution. The BC-Fe possessed a porous structure with a surface area of 277.895 m 2 /g. The adsorption characteristics of arsenic onto BC-Fe were further investigated at various pHs, contact times, arsenic concentrations, and adsorbent doses in batch tests. The corresponding optimum equilibrium pH ranges for As(III) and As(V) removal were 4-5 and 3-4, respectively. The equilibrium times for As(III) and As(V) adsorption were 30 and 35.5 h, respectively. The arsenic removal was strongly dependent on the initial adsorbate concentration and adsorbent dosage. The maximum arsenic removal capacities of BC-Fe under the experimental conditions were 7.237 and 19.771 mg/g for As(III) and As(V), respectively.The pseudo-second-order kinetic model and Freundlich isotherm explained the kinetic and equilibrium of both the As(III) and As(V) adsorbent processes, respectively. Based on these results, the BC-Fe developed in this study is a promising material for the treatment of arsenic-contaminated water.

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Synthesis, characterization and performance in arsenic removal of iron-doped activated carbons prepared by impregnation with Fe(III) and Fe(II)

Cited by 117 publications

References 43 publications

Arsenic removal by nanoparticles: a review

Arsenic removal by nanoparticles: a review

Activated carbons for the removal of heavy metal ions: A systematic review of recent literature focused on lead and arsenic ions

Arsenic Removal from Water by Iron-Modified Bamboo Charcoal

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