Simultaneous recovery of ammonium and phosphate from simulated treated wastewater effluents by activated calcium and magnesium zeolites

You, Xialei; Valderrama, César; Cortina, José Luis

doi:10.1002/jctb.5249

Cited by 30 publications

(18 citation statements)

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“…e synthesis of NaP1 from a hazardous Al-waste was performed by an eco-friendly bench-scale hydrothermal process [17], contributing to reduce the consumption of raw materials (i.e., water and NaOH) and environmental impact. Although both natural zeolites and zeolites from fly ash have been widely used to remove ammonium from waters [13,14,18,19], studies conduced for zeolites from highly Alenriched wastes have not been reported, to our knowledge, in the literature.…”

Section: Introductionmentioning

confidence: 85%

Al-Waste-Based Zeolite Adsorbent Used for the Removal of Ammonium from Aqueous Solutions

Sánchez-Hernández¹,

Padilla²,

López-Andrés

et al. 2018

International Journal of Chemical Engineering

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is work evaluates the use of a synthetic NaP1 zeolite obtained from a hazardous Al-containing waste for the removal of ammonium (NH 4 + ) from aqueous solutions by batch experiments. Experimental parameters, such as pH (6-8), contact time (1-360 min), adsorbent dose (1-15 g/L), and initial NH 4 + concentration (10-1500 mg/L), were evaluated. Adsorption kinetic models and equilibrium isotherms were determined by using nonlinear regression. e kinetic was studied by applying both the pseudo-firstorder and pseudo-second-order models.e equilibrium isotherms were analyzed according to two-parameter equations (Freundlich, Langmuir, and Temkin) and three-parameter equations (Redlich-Peterson, Sips, and Toth). e results showed that the NH 4 + uptake on NaP1 was fast (15 min) leading to a high experimental sorption capacity (37.9 mg/g). e NH 4 + removal on NaP1 was a favorable process that followed the pseudo-first-order kinetic model. e NH 4 + adsorption was better described by the Sips (54.2 mg/g) and Toth (58.5 mg/g) models. NaP1 zeolite from Al-waste showed good NH 4 + sorption properties, becoming a potential adsorbent to be used in the treatment of contaminated aqueous effluents. us, a synergic effect on the environmental protection can be achieved: the end of waste condition of a hazardous waste and the water decontamination.

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Section: Introductionmentioning

confidence: 85%

Al-Waste-Based Zeolite Adsorbent Used for the Removal of Ammonium from Aqueous Solutions

Sánchez-Hernández¹,

Padilla²,

López-Andrés

et al. 2018

International Journal of Chemical Engineering

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show abstract

“…<1.0mg/L, Hg :<1.0×10 -3 mg/L, Mn: <0.05mg/L, and Zn:<5.0mg/L are regarded as non-toxic for the aesthetic objectives of drinking water. Na + and Mg 2+ as mentioned in the previous study [30]. For MNZ, it can be explained by the ion selectivity of NH4 + towards natural zeolites.…”

Section: Trace Elemental Analysis By Leaching Testsupporting

confidence: 58%

“…You et al [30] observed the IR spectrum NH4 + (1434 cm -1 ) and PO4 3-(997 cm -1 ) on spent Ze-Mg, which are also similar to IR spectrum of struvite. However, the presence of struvite was not confirmed neither by XRD nor SEM image.…”

Section: Determination Of the Amounts Of P On Spent Zeolite Samplesmentioning

confidence: 61%

“…MgCl2 modified zeolite can be used for phosphate removal via struvite crystallization, as the The assessment of phosphorus removal via struvite precipitation has been conducted by using different Mg 2+ sources with design of experiments [29]. Recently, Mg-modified zeolites were studied along with Ca-modified zeolites for simultaneous recovery of NH4 + and PO4 3from simulated wastewater [30].…”

Section: Formation Of Struvite For Phosphate Removalmentioning

confidence: 99%

“…According to You et al [30], the main possible phosphate sorption process by MZ can be divided into the fastest and the slowest steps:…”

Section: Possible Mechanisms Of Phosphate Removal By Mzmentioning

confidence: 99%

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Development of modified natural zeolites and study of phosphate removal from aqueous solutions

Kondo¹

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Lake eutrophication has been an issue in many countries including Canada. Controlling and reducing the level of phosphorus, which is available as a form of phosphate in water, have been studied to manage the lake eutrophication. Natural zeolite-based adsorbents are one of the best candidates for water treatment due to its wide availability, cost-effectiveness, and superior characteristics as an ion exchanger. In this study, the concept of struvite crystallization was employed to develop magnesium-ammonium-modified zeolites (MNZ). Their removal capacity of phosphate was tested with comparison of magnesium-modified zeolites (MZ) based on the design of experiments (DOE) and response surface methodology (RSM). According to RSM, MNZ was found to be more effective in removing phosphates from aqueous solutions up to 92% of removal while MZ was effective up to 46% of removal. Contact time and zeolite dosage were found to be the significant parameters on phosphate removal.

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Characterization of natural Yemeni zeolites as powder sorbents for ammonium valorization from domestic waste water streams using high rate activated sludge processes

Jmayai

Hermassi

Alouani

et al. 2018

J of Chemical Tech & Biotech

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BACKGROUND In this study three natural Yemeni zeolites (NZ1, NZ2 and NZ3) having major minerals such as clinoptilolite and mordenite, were evaluated as low cost sorbents for the removal and recovery of ammonium ions. RESULTS The zeolite samples, with pHPZC = 9.1 ± 0.2, 7.9 ± 0.2 and 7.4 ± 0.2 for NZ1, NZ2 and NZ3, respectively, showed high ammonium sorption capacities. At pH 8, for treated waste waters: (i) with low NH4+ levels (from 25 to 100 mgNH4/L); and (ii) for concentrated NH4+ side streams generated from the anaerobic digestion of sewage sludge (from 400 up to 1500 mg L‐1), maximum loading capacities of 27 to 51 mgNH4 g‐1 were measured for the studied zeolites. Measured sorption isotherms, in the concentration range 0.05 to 5 g L‐1, were well described by the Langmuir isotherm. The ammonium sorption kinetics was controlled by particle diffusion and was well described by both the homogeneous diffusion (HPDM) and shell progressive (SPM) models. CONCLUSION Comparison of the equilibrium data with results for natural and synthetic zeolites demonstrate the higher performance of the studied zeolites providing low residual ammonium values <1 mgNH4 g‐1 and <10 mgNH4 g‐1 when treating both diluted and concentrated‐NH4+ streams, respectively. © 2017 Society of Chemical Industry

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Simultaneous recovery of ammonium and phosphate from simulated treated wastewater effluents by activated calcium and magnesium zeolites

Cited by 30 publications

References 50 publications

Al-Waste-Based Zeolite Adsorbent Used for the Removal of Ammonium from Aqueous Solutions

Al-Waste-Based Zeolite Adsorbent Used for the Removal of Ammonium from Aqueous Solutions

Development of modified natural zeolites and study of phosphate removal from aqueous solutions

Characterization of natural Yemeni zeolites as powder sorbents for ammonium valorization from domestic waste water streams using high rate activated sludge processes

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