Kinetic and equilibrium studies of phosphorous adsorption: Effect of physical and chemical properties of adsorption agent

Oliveira, Marília R.; Araujo, Angelo; Azevedo, G. de M.; Pereira, M.F.R.; Neves, I.C.; Machado, A. V.

doi:10.1016/j.ecoleng.2015.05.020

Cited by 22 publications

(7 citation statements)

References 13 publications

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“…The effect of the temperature on sorption capacity was more remarkable for CSW (57.3%) than CSW-T adsorbent (22.1%). The effect of the temperature for phosphate adsorption was also observed in the literature [31][32][33].…”

Section: Effect Of the Temperature On P Removalsupporting

confidence: 58%

Adsorption and recovery of phosphate from aqueous solution by the construction and demolition wastes sludge and its potential use as phosphate-based fertiliser

Reis

Cazacliu²,

Correa

et al. 2020

Journal of Environmental Chemical Engineering

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This study aimed to investigate phosphate removal from aqueous effluents by an inorganic sludge from the inert part of construction and demolition wastes (CSW) as adsorbent. It is also discussed the application of the loaded P adsorbent as potential fertiliser. The CSW was also thermally treated at 800°C for 2 h (CSW-T), and its influence in the P removal was also investigated. The characterisation techniques highlighted low porosity on CSW and CSW-T adsorbents and that they are mainly formed by oxides which could enhance the P uptake and recovery. In pH experiments, P adsorption increased as initial pH increased, at pH higher than 7.8 the P removal sharply increased due to the formation of calcium phosphate precipitate. The mechanism of the P adsorption onto CSW indicated that the process was mainly controlled by chemical bonding or chemisorption. The results showed that CSW-T was more effective for P removal in comparison to CSW based on the Liu isotherm, the maximum sorption capacity attained was 24.04 (CSW) and 57.64 mg g −1 (CSW-T). Based on the Avrami's kinetic models, the time for attaining 95% of saturation was 212.6 (CSW), and 136.6 min (CSW-T). CSW and CSW-T showed the highest phosphate-removal performance among many adsorbents found in the literature; therefore, this kind of waste can be used widely as an inexpensive phosphate-recovery adsorbent. Besides, the P loaded adsorbents could be used as potential fertilisers which could be an interesting and efficient way of reuse for this waste.

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Section: Effect Of the Temperature On P Removalsupporting

confidence: 58%

Adsorption and recovery of phosphate from aqueous solution by the construction and demolition wastes sludge and its potential use as phosphate-based fertiliser

Reis

Cazacliu²,

Correa

et al. 2020

Journal of Environmental Chemical Engineering

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“…It appears that Fe is also effective in the stabilization of cadmium (Saffari et al, 2015). Oliveira et al (2015) observed high P removal ability in Fe-modified zeolite followed by Al-modified zeolite. Shanableh et al (2016) studied P adsorption using Al/Fe modified bentonite.…”

Section: Taguchi Analysismentioning

confidence: 77%

“…(2011) which is in agreement with results of a present study which demonstrated the significant role of NaOH in increasing P adsorption (Figure 1(d)). According to the results of Oliveira et al. (2015), zeolite was an efficient and promising adsorbent for P removal.…”

Section: Resultsmentioning

confidence: 99%

“…Increase in Cd and Hg adsorptions as a result of an increase in pH value has been reported by Zolfaghari et al (2011) which is in agreement with results of a present study which demonstrated the significant role of NaOH in increasing P adsorption (Figure 1(d)). According to the results of Oliveira et al (2015), zeolite was an efficient and promising adsorbent for P removal. They observed that maximum P removal occurred in higher pH.…”

Section: Taguchi Analysismentioning

confidence: 99%

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Investigation of Taguchi optimization, equilibrium isotherms, and kinetic modeling for phosphorus adsorption onto natural zeolite of clinoptilolite type

Razmi

Ghasemi-Fasaei

2018

Adsorption Science & Technology

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Adsorption process plays an important role in the removal of phosphorus from aqueous solutions. A laboratory experiment was conducted to investigate the adsorption characteristics of phosphorus onto natural zeolite and to find out the relative importance of some controllable treatments in phosphorus adsorption process using the Taguchi optimization methodology. Results showed that the adsorption of phosphorus in the presence of Fe 3þ and Al 3þ was higher than that in the absence of these two cations probably due to the adsorption of phosphorus-bearing anions on opposite charges of these cations. Also, increase in contact time tended phosphorus adsorption to be increased. The addition of base and acid treatments caused an increase and a decrease, respectively, on phosphorus adsorption. The order of effectiveness of treatments on the values of phosphorus adsorption was as follows: acid/base treatment >sorbent to sorbate ratio > modification with aluminium (Al)/iron (Fe) >contact time >phosphorus concentration. Phosphorus adsorption data well fitted to the Freundlich isotherm model. The pseudo-second order was the best model describing phosphorus adsorption kinetics. According to the results reported herein, it is assumed that the main mechanism controlling phosphorus adsorption onto natural zeolite is chemisorption.

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“…Wastewaters originating from cheese manufacturing industries, such as cheese whey (CW), second cheese whey (SCW), and washing waters, are of high-strength as they contain significant [14] Simulated swine wastewater Chemical modification with NaCl Ammonium 40%-95% [15] Dairy farm wastewater treated in constructed wetlands Natural Phosphorus Ammonium 86%-99% 88%-99% [16] Dairy industry wastewater Organo-zeolites COD Nitrate nitrogen Phosphate 50% 70% 20% [17] Dairy processing waters Natural COD 76% [18] Aqueous solution/carcass leachates Naturaland Mg 2+ modified Ammonium 8.173 mg/g 7.759 mg/g [19] Municipal wastewater Natural Ammonium 5.03 mg/g 75.6% [20] Aqueous solution Modified with fly ash Ammonium 41.73%-45.25% [21] Review of acid mine drainage urban runofflandfill leachate Natural/synthetic Heavy metals Zn (30%-95%)/Cu (33%-100%) Cd (54%-99%)/Cu (31%-90%)/Zn (81.892%)/Ammonium 78% Ammonium (over 50%)/Pb (71%)/Cd (74%) [22] Aqueous solution Natural Ammonium 22.90 mg/g [23] Aqueous solution Modified by microwave and sodium acetate Ammonium 92.90% [24] [25] Municipal wastewater Natural Modified (Z-Fe) Phosphate (single) Ammonium (single) Phosphate (single) Ammonium (single) 0.6 mg/g 33 mg/g 3.4 mg/g 27 mg/g [26] Aqueous solution Natural Modified with potassium permanganate Ammonium 5.85 mg/g 3.68 mg/g [27] Aqueous solution Modified with lanthanum oxide Phosphorus Ammonium 8.96 21.2 mg/g [28] Aqueous solution Natural Ammonium 67.4%-81.1% [29] Simulated reclaimed wastewater Modified with NaCl Ammonia, nitrogen Phosphorus 98.46% 99.8% [30] Aqueous solution Natural Ammonium 75%-95.3% [31] Aqueous solution Natural (eight different types) Ammonium 15.7%-32.4% [32] Municipal wastewater Natural Phosphorus Ammonium 46%-100% 70% [33] Aqueous solution Natural Modified Phosphate 0.28-1.82 mg/g 1.31-1.97 mg/g [34] Aqueous solution Natural Phosphate Up to 26.48 mg/g [35] Aqueous solution Modified with nanosized particles of magnetite Arsenate Up to 5.2 mg/g [36] Post-treated municipal wastewater Natural Ammonium 23 ± 0.8 mg/g [37] Aqueous solution Modified with cetylpyridinium chloride (CPC) Hexavalent chromium 5.8 mg/g [38] Simulated municipal wastewater (vertical flow constructed wetlands) Natural Ammonium >90%…”

Section: Introductionmentioning

confidence: 99%

Zeolite as a Potential Medium for Ammonium Recovery and Second Cheese Whey Treatment

Kotoulas

Agathou

Triantaphyllidou

et al. 2019

Water

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The efficiency of natural zeolite to remove ammonium from artificial wastewater (ammonium aqueous solutions) and to treat second cheese whey was examined, aiming to recover nitrogen nutrients that can be used for further applications, such as slow-release fertilizers. Sorption experiments were performed using artificial wastewater and zeolite of different granulometries (i.e., 0.71-1.0, 1.8-2.0, 2.0-2.8, 2.8-4.0, and 4.0-5.0 mm). The granulometry of the zeolite had no significant effect on its ability to absorb ammonium. Nevertheless, smaller particles (0.71-1.0 mm) exhibited quicker NH 4 + -N adsorption rates of up to 93.0% in the first 10 min. Maximum ammonium removal efficiency by the zeolite was achieved at ammonium concentrations ranging from 10 to 80 mg/L. Kinetic experiments revealed that chemisorption is the mechanism behind the adsorption process of ammonium on zeolite, while the Freundlich isotherm model fitted the experimental data well. Column sorption experiments under batch operating mode were performed using artificial wastewater and second cheese whey. Column experiments with artificial wastewater showed high NH 4 + -N removal rates (over 96% in the first 120 min) for all granulometries and initial NH 4 + -N concentrations tested (200 and 5000 mg/L). Column experiments with second cheese whey revealed that natural zeolite can remove significant organic loads (up to 40%, 14.53 mg COD/g of zeolite) and NH 4 + -N (about 99%). For PO 4 3− -P, the zeolite appeared to saturate after day 1 of the experiments at a removal capacity of 0.15 mg P/g of zeolite. Desorption experiments with water resulted in low NH 4 + -N and PO 4 3− -P desorption rates indicating that the zeolite could be used as a substrate for slow nitrogen release in soils.

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Kinetic and equilibrium studies of phosphorous adsorption: Effect of physical and chemical properties of adsorption agent

Cited by 22 publications

References 13 publications

Adsorption and recovery of phosphate from aqueous solution by the construction and demolition wastes sludge and its potential use as phosphate-based fertiliser

Adsorption and recovery of phosphate from aqueous solution by the construction and demolition wastes sludge and its potential use as phosphate-based fertiliser

Investigation of Taguchi optimization, equilibrium isotherms, and kinetic modeling for phosphorus adsorption onto natural zeolite of clinoptilolite type

Zeolite as a Potential Medium for Ammonium Recovery and Second Cheese Whey Treatment

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