Lanthanum-modified magnetic oyster shell and its use for enhancing phosphate removal from water

You, Kai; Yang, Wenke; Song, Ping; Fan, Liuping; Xu, Sheng; Li, Bingying; Feng, Lei

doi:10.1016/j.colsurfa.2021.127897

Cited by 16 publications

(4 citation statements)

References 36 publications

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“…The qe value that was generated from the PFO model was considerably different from the qe value that was determined from the experimental data, but the qe value that was produced from the PSO model was consistent with that from the experimental data [26]. The R 2 values varied from 0.9974 to 0.9986, and the PSO plot is made up entirely of straight lines (t/qt versus t) [27]. The R 2 values obtained from the PFO model varied from 0.4802 to 0.6913 and were lower than those obtained from the PSO.…”

Section: Adsorption Kinetics For Cmcs With Various Particle Sizesmentioning

confidence: 61%

Effect of Various Sizes of Calcined Marsh Clam Shell on Phosphate Removal from Aqueous Solution

Noorul Hudai Abdullah,

Muhammad Azreen Mohd Azmi,

Muhammad Afham Mohd Zaidi

et al. 2024

ARFMTS

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Phosphorus is one of essential elements for sustaining life largely through phosphate, a compound containing the phosphate ion, PO43−. However, excessive phosphorus concentrations will cause eutrophication and this condition is considered as an environmental issue. The phosphorus sources are commonly from human activities; for instance, detergents, fertilisers, and industries. Although various adsorption techniques have been applied to remove phosphorus in water, the effect of different particle sizes of calcined marsh clam shells on phosphate removal has not been fully investigated, along with its adsorption kinetics and isotherms. This study investigates phosphate removal from synthetic solution onto calcined marsh clam shells (CMCs) with 5 different particle sizes: 0.075–0.15, 0.15–0.30, 0.30–0.60, 0.60–1.18, and 1.18–2.36 mm. The batch experiment used 2 g of adsorbent and synthetic potassium dihydrogen phosphate (KH2PO4) solution. The adsorbent size of 0.075 to 0.15 mm showed the highest removal (100%) efficiency due to high adsorption rate. The experimental data were further analysed using kinetics and isotherm models; the data fitted well with pseudo-second-order kinetic model (R2 = 0.9986) and Freundlich isotherm model (R2 = 0.8404). The potential of marsh clam shells as an adsorbent for phosphate removal in water is significant for future applications in wastewater treatment technology.

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Section: Adsorption Kinetics For Cmcs With Various Particle Sizesmentioning

confidence: 61%

Effect of Various Sizes of Calcined Marsh Clam Shell on Phosphate Removal from Aqueous Solution

Noorul Hudai Abdullah,

Muhammad Azreen Mohd Azmi,

Muhammad Afham Mohd Zaidi

et al. 2024

ARFMTS

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“…13,15,38,57 Although they can achieve high removal efficiency, they are complicated, difficult to operate and costly, and most phosphate effluent concentrations still fail to meet strict standards. 58 In contrast, the PAN A F–Cl is not only easy to operate, but also has low cost and can be recycled at least five times. In addition, it can reduce the phosphate effluent concentration to 0.0184 mg P L −1 , well below the 0.05 mg P L −1 emission standard recommended by Washington, D.C.…”

Section: Resultsmentioning

confidence: 99%

Efficient capture of phosphate from wastewater by a recyclable ionic liquid functionalized polyacrylonitrile fiber: a typical “release and catch” mechanism

Zheng

et al. 2022

Environ. Sci.: Water Res. Technol.

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“…The pH value of the solution affects not only the surface charge of the adsorbent but also the form of phosphorus in the solution 26 . Phosphate mainly exists in the forms of H 2 PO 4 − and HPO 4 2− in water when the pH is 2–10 27 . The charge on the surface of the adsorbent gradually changed from positive to negative as the pH of the solution increased, leading to an increase in the electrostatic repulsion between the adsorbent and the H 2 PO 4 − and HPO 4 2− ions, which reduced the removal rate of phosphorus.…”

Section: Resultsmentioning

confidence: 99%

Adsorption performance of red mud magnetic composite material modified by Spirit‐based distillers' grains for low‐concentration phosphorus in water

Xie

Meng

et al. 2022

J of Chemical Tech & Biotech

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Background: Research on phosphate removal has focused on high-phosphorus wastewater, which has difficulty meeting the discharge standard through one-step processing. Herein, the rich carbon source of spirit-based distillers' grains was used to reduce and roast red mud (RM) to prepare magnetic adsorption material (MRM), aiming to improve the adsorption performance of RM on low-concentration phosphorus in water and to facilitate the separation and recovery of the adsorbent.Results: The characterization results of MRM indicated that the high-temperature decomposition of macromolecular minerals in RM exposed more active sites of metal ions. Compared with unmodified samples, the specific surface area and saturation magnetization of MRM increased by 3.64 and 9.21 times, respectively;this provided more active sites for phosphorus adsorption by MRM and gave the material magnetic separation ability. The results of adsorption experiments showed that MRM had a wide applicable pH range and good selectivity for phosphorus adsorption, and the phosphorus removal rate was 4.97 times that of RM. The adsorption process of phosphorus by MRM was more in line with the Langmuir isotherm adsorption model and the quasi-second-order kinetic equation, as it was a process of spontaneous endothermic entropy increase. The phosphorus removal mechanism included chemical precipitation, coordination exchange, physical adsorption, and electrostatic attraction.Conclusion: MRM has good adsorption performance for low concentrations of phosphorus in water and provides an effective method for the resource utilization of red mud and spirit-based distillers' grains.

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Lanthanum-modified magnetic oyster shell and its use for enhancing phosphate removal from water

Cited by 16 publications

References 36 publications

Effect of Various Sizes of Calcined Marsh Clam Shell on Phosphate Removal from Aqueous Solution

Effect of Various Sizes of Calcined Marsh Clam Shell on Phosphate Removal from Aqueous Solution

Efficient capture of phosphate from wastewater by a recyclable ionic liquid functionalized polyacrylonitrile fiber: a typical “release and catch” mechanism

Adsorption performance of red mud magnetic composite material modified by Spirit‐based distillers' grains for low‐concentration phosphorus in water

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