Non-apatite Ca-Mg phosphate sorbent for removal of toxic metal ions from aqueous solutions

Иванец, А. И.; Srivastava, Varsha; Китикова, Н. В.; Шашкова, И. Л.; Sillanpää, Mika

doi:10.1016/j.jece.2017.03.041

Cited by 38 publications

(10 citation statements)

References 32 publications

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“…[5,6] Quite the opposite, the maximum sorption capacity for Pb was the lowest with respect to Zn, Cu, Cd, Ni, and Co when non-apatite phosphate sorbent was used. [34] It should be emphasized that the higher sorption capacity of functionalized BHAP samples did not diminish their selectivity towards the Pb ions (Fig. 4B).…”

Section: Sorption Properties Of Bhap Ca/bhap and 34-dhba/bhapmentioning

confidence: 78%

Sorption of divalent heavy metal ions onto functionalized biogenic hydroxyapatite with caffeic acid and 3,4-dihydroxybenzoic acid

Smičiklas

Lazić

Živković

et al. 2019

Journal of Environmental Science and Health, Part A

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The sorption ability of biogenic hydroxyapatite (BHAP) towards heavy metal ions (Pb, Cu, Ni, Cd, and Zn) is compared with functionalized BHAP powders with caffeic acid (CA) and 3,4dihydroxybenzoic acid (3,4-DHBA). The functionalization of the BHAP with either CA or 3,4-DHBA is indicated by the appearance of the colored powders due to the formation of the interfacial charge transfer (ICT) complexes. The detailed characterization of as-prepared and functionalized BHAP samples was performed using transmission electron microscopy, reflection spectroscopy, thermogravimetric analysis and determination of zeta potential. All three sorbents clearly displayed preferential sorption of Pb ions when the total concentration of multicomponent equimolar solutions of heavy metal ions is high. It should be emphasized that the sorption capacity of functionalized BHAP with either CA or 3,4-BHAP was found to be higher, up to 60%, compared to as-prepared BHAP without the decrease of selectivity towards Pb ions.

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Section: Sorption Properties Of Bhap Ca/bhap and 34-dhba/bhapmentioning

confidence: 78%

Sorption of divalent heavy metal ions onto functionalized biogenic hydroxyapatite with caffeic acid and 3,4-dihydroxybenzoic acid

Smičiklas

Lazić

Živković

et al. 2019

Journal of Environmental Science and Health, Part A

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“…Its performance for Pb 2+ , Cu 2+ , and Cd 2+ is also very good with adsorption capacity comparable to that of the some of the best sorbents reported so far. Ivanets et al reported that calcium magnesium phosphate prepared by phosphating dolomite showed high sorption capacities for a number of ions, including Pb 2+ , Cu 2+ , and Cd 2+ . , …”

Section: Resultsmentioning

confidence: 99%

“…Replacement of Na + brings the heavy-metal ions into the vicinity of the PO 4 3– groups on the insoluble anionic nanosheets which act as precipitants or complexing agents. Phosphates are commonly used as anchoring groups in the extraction of metals. ,, The selectivity sequence Pb 2+ > Tl + > Cu 2+ > Cd 2+ reflects the affinity or binding strength between the cation and the macroanionic layers. A high affinity between the cation and the PO 4 3– translates into a low concentration in solution.…”

Section: Resultsmentioning

confidence: 99%

One-Pot Synthesis of Layered Disodium Zirconium Phosphate: Crystal Structure and Application in the Remediation of Heavy-Metal-Contaminated Wastewater

et al. 2019

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Inorganic ion exchangers offer advantages whenever operation at high temperatures or in oxidizing environments is required. A novel two-dimensional disodium zirconium phosphate, Zr(NaPO4)2·H2O, was reported and investigated as an ion exchanger for heavy metals. The material was synthesized by a novel minimalistic solventless approach, and its solid-state structure was determined from powder X-ray diffraction data. Zr(NaPO4)2·H2O crystallizes in the space group P21/c with cell parameters a = 8.7584(1) Å, b = 5.3543(1) Å, c = 18.1684(3) Å, β = 109.053 (1)°, and Z = 4. Its layered structure is similar to that of α-zirconium phosphate, Zr(HPO4)2·H2O. However, unlike α-zirconium phosphate which is limited in practical applications by its narrow interlayer spacing (d = 7.6 Å), the disodium zirconium phosphate has a larger spacing of 8.6 Å between planes. The material with inherent structural advantages displays excellent sorption for heavy metals such as Pb2+, Cu2+, Cd2+, and Tl+, maintaining its high selectivity with distribution coefficients, K d, of 104–105 mL/g even in the presence of a large excess of Na+, K+, Mg2+, and Ca2+, which are commonly present in underground water. In particular, the maximum sorption capacity for the highly toxic Tl+ is a record high, 5.07 mmol/g (1036 mg/g). The fast reaction kinetics indicate that the exchangeable positions in Zr(NaPO4)2·H2O are readily accessible, in contrast to Zr(HPO4)2·H2O. The ease of preparation, benign nature, and advantageous ion-exchange properties make Zr(NaPO4)2·H2O a highly promising sorbent for the treatment of water polluted with heavy metals.

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“…The adsorption technique is the most widely used physical technique, efficient to remove inorganic and organic pollutants from wastewater. Many natural and synthetic adsorbents have already been developed [ 5 , 6 , 7 ]. Among them, activated carbon, rice husk, carbon nanotubes, mesoporous silica, curcubiturils etc.…”

Section: Introductionmentioning

confidence: 99%

Green Synthesis, Characterization and Application of Natural Product Coated Magnetite Nanoparticles for Wastewater Treatment

et al. 2020

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Adsorption of organic pollutants, toxic metal ions, and removal of harmful bacteria can give us clean and pure drinkable water from wastewater resources. Respective magnetite nanoparticles (MNPs) were synthesized using a cheaper and greener way in an open-air environment with the use of crude latex of Jatropha curcas (JC) and leaf extract of Cinnamomum tamala (CT). Characterization of MNPs had been performed by dynamic light scattering (DLS), Ultraviolet-visible (UV-vis) spectroscopy, Fourier-transform infrared (FTIR) spectroscopy, powdered X-ray diffraction (XRD), and field emission scanning electron microscope (FE-SEM). The size ranges of the synthesized MNPs were observed in between 20–42 nm for JC-Fe3O4 and within 26–35 nm for CT-Fe3O4 by FE-SEM images. The effect of synthesized magnetic nanoparticles in wastewater treatment (bacterial portion), dye adsorption, toxic metal removal as well as antibacterial, antioxidant, and cytotoxic activities were studied. This purification will lead to an increase in the resources of pure drinking water in the future.

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Non-apatite Ca-Mg phosphate sorbent for removal of toxic metal ions from aqueous solutions

Cited by 38 publications

References 32 publications

Sorption of divalent heavy metal ions onto functionalized biogenic hydroxyapatite with caffeic acid and 3,4-dihydroxybenzoic acid

Sorption of divalent heavy metal ions onto functionalized biogenic hydroxyapatite with caffeic acid and 3,4-dihydroxybenzoic acid

One-Pot Synthesis of Layered Disodium Zirconium Phosphate: Crystal Structure and Application in the Remediation of Heavy-Metal-Contaminated Wastewater

Green Synthesis, Characterization and Application of Natural Product Coated Magnetite Nanoparticles for Wastewater Treatment

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