Adsorption and removal of arsenic(V) from drinking water by aluminum-loaded Shirasu-zeolite

Xu, Yanhua; Nakajima, Tsunenori; Ohki, Akira

doi:10.1016/s0304-3894(02)00020-1

Cited by 238 publications

(135 citation statements)

References 15 publications

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“…These values are registered in the Table. 2 with the values of the loading capacity decreasing for each anion. 12 Selectivity decreases in the order phosphate >> sulphate ~ nitrate ~ chloride. Therefore, the results show that the loading capacity is similar in presence of the all interfering anions except phosphate which present an interfering effect more pronounced.…”

Section: Selectivity With Interfering Anionsmentioning

confidence: 99%

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Arsenate removal with 3-mercaptopropanoic acid-coated superparamagnetic iron oxide nanoparticles

Morillo

Uheida

Pérez

et al. 2015

Journal of Colloid and Interface Science

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In the present work, superparamagnetic iron oxide nanoparticles (SPION) surface-coated with 3-mercaptopropanoic acid (3-MPA) were prepared and their feasibility for the removal of arsenate from dilute aqueous solutions was demonstrated. The synthesized 3-MPA-coated SPION was characterized using transmission electron microscopy (TEM), thermogravimetric analysis (TGA) and Fourier transform infra-red spectrometry (FTIR). Separation efficiency of the coated nanoparticles and the equilibrium isotherm of arsenate adsorption were investigated. The obtained results reveal the arsenate adsorption to be highly pH-dependent, and the maximum adsorption was attained in less than 60 minutes. The resulting increase of 3-MPA-coated SPION adsorption capacity to twice the adsorption capacity of SPION alone under the same conditions is attributed to the increase of active adsorption sites. An adsorption reaction is proposed. On the other hand, efficient recovery of arsenate from the loaded nanoparticles was achieved using nitric acid (HNO 3 ) solution, which also provides a concentration over the original arsenate solution. HIGHLIGHTS• Feasibility of using SPION modified with 3MPA for the removal of As(V).• The adsorbent system results in an effective sorption for selective As(V) removal.• The adsorption capacity for As(V) is higher comparing with other adsorbent systems.• Adsorption mechanism has been proposed as the most suitable considering the results.

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Section: Selectivity With Interfering Anionsmentioning

confidence: 99%

“…A great variety of water treatment methodologies s such as precipitation [4], oxidation [5], liquid-liquid extraction [6,7], ion exchange [8], membrane processes [9], surface complexation [10] and selective adsorption [11,12] have been studied for significant reduction or remove arsenic from contaminated effluents.…”

Section: Introductionmentioning

confidence: 99%

Arsenate removal with 3-mercaptopropanoic acid-coated superparamagnetic iron oxide nanoparticles

Morillo

Uheida

Pérez

et al. 2015

Journal of Colloid and Interface Science

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“…Hence, they have a strong affinity for transition metal cations, but only little affinity for anions and non-polar organic molecules [19]. The removal of arsenic from solution by zeolites has been investigated mainly on natural and iron exchanged tuffs [20,21].…”

mentioning

confidence: 99%

Synthesised magnetic nanoparticles coated zeolite (MNCZ) for the removal of arsenic (As) from aqueous solution

Salem

Yin

2012

Journal of Experimental Nanoscience

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A novel adsorbent, magnetic nanoparticle (-Fe 2 O 3 )-coated zeolite (MNCZ), was prepared for the removal of arsenic (As) ions from aqueous solution. The influence of different sorption parameters, that is, contact time, acidic reaction (pH) and initial arsenic concentration were studied using batch equilibrium techniques. The results obtained showed that the MNCZ was effective for the removal of As from aqueous solution, and the percentage removal of As could reach over 95.6% at a pH value of 2.5 within 15 min. Moreover, the removal of As depended on the initial concentration of As. For the regeneration of MNCZ material, 0.1 M NaOH was suitable for the desorption of As (70% after 15 min), and the regenerated material showed an adsorption capacity of 93.95% within five cycles. We concluded that MNCZ presents a reusable adsorbent for a fast, convenient and highly efficient removal of As from aqueous solution.

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“…Among the seven coagulants and adsorbents, aerobic granular sludge had the highest specific surface area (828.76 m 2 /g), while the surface areas of Ca(OH)2, PACl, AS, PAC, GAC, and zeolite were 267.34 m 2 /g, 211.32 m 2 /g, 654.44 m 2 /g, 562.82 m 2 /g, 484.83 m 2 /g, and 362.54 m 2 /g, respectively. This suggests that the use of aerobic granular sludge may achieve the highest TDS removal efficiency from ROC as the number of active sites available for TDS adsorption is highly dependent on the effective surface area of the coagulants/adsorbents [45]. Figure 3a shows the results of removing TDS from ROC by biosorption with aerobic granular sludge at pH 7.…”

Section: Characterization Of Aerobic Granular Sludgementioning

confidence: 99%

Removal of Total Dissolved Solids from Reverse Osmosis Concentrates from a Municipal Wastewater Reclamation Plant by Aerobic Granular Sludge

Kim

Park

Yoon

et al. 2018

Water

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Reverse osmosis (RO) has been widely utilized in water reclamation plants and produces a concentrated brine (or reject) stream as a by-product. RO concentrates (ROC) contain vast quantities of salts and dissolved organic matter, such as biomass and humic-like substances, which hinder biological wastewater treatment (such as biological nitrogen removal). In this study, we cultivated granular sludge in an aerobic sequencing batch reactor to treat municipal wastewater with an organic loading rate of 2.1-4.3 kgCOD/m 3 day at room temperature (25 • C), and remove total dissolved solids (TDS) from ROC by biosorption, with aerobic granular sludge as a novel biosorbent. The results of the kinetic experiments demonstrated that TDS removal by aerobic granular sludge was more rapid than that by other coagulants and adsorbents (i.e., calcium hydroxide, polyaluminum chloride, activated sludge, powdered activated carbon, granular activated carbon, and zeolite) under optimal treatment conditions. The biosorption of TDS on the aerobic granular sludge was well-modeled by the Lagergren first-order model, with a maximum biosorption capacity of 1698 mg/g. Thus, aerobic granular sludge could be effective as a regenerable biosorbent for removing the TDS in ROC from municipal wastewater.

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Adsorption and removal of arsenic(V) from drinking water by aluminum-loaded Shirasu-zeolite

Cited by 238 publications

References 15 publications

Arsenate removal with 3-mercaptopropanoic acid-coated superparamagnetic iron oxide nanoparticles

Arsenate removal with 3-mercaptopropanoic acid-coated superparamagnetic iron oxide nanoparticles

Synthesised magnetic nanoparticles coated zeolite (MNCZ) for the removal of arsenic (As) from aqueous solution

Removal of Total Dissolved Solids from Reverse Osmosis Concentrates from a Municipal Wastewater Reclamation Plant by Aerobic Granular Sludge

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