Separation and recovery of lead from a low concentration solution of lead(II) and zinc(II) using the hydrolysis production of poly styrene-co-maleic anhydride

Liang, Xing; Su, Yibing; Yang, Ying

doi:10.1016/j.jhazmat.2011.12.009

Cited by 15 publications

(4 citation statements)

References 29 publications

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“…The absorption of the Pb 2+ ion onto A2-5 was very fast in the first 0.5 h, which indicated that the Pb 2+ ion permeated into the outer surface of A2-5 through film diffusion. In the process, the carboxylic groups acted as a bidentate chelate coordinate to Pb 2+ in the complex (Scheme 2), 58 so the adsorbed Pb 2+ ions acted as the ionic cross-linker. 51 As a result, the difussion of Pb 2+ ions into the inner area of the nanocomposite hydrogel adsorbent was hindered.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Attapulgite/Poly(acrylic acid) Nanocomposite (ATP/PAA) Hydrogels with Multifunctionalized Attapulgite (org-ATP) Nanorods as Unique Cross-linker: Preparation Optimization and Selective Adsorption of Pb(II) Ion

Liu

Jiang

Zhu

et al. 2013

ACS Sustainable Chem. Eng.

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A facile strategy is developed to synthesize the novel attapulgite/poly(acrylic acid) nanocomposite (ATP/PAA) hydrogels via the “one-pot” inverse suspension polymerization with the multifunctionalized attapulgite (org-ATP) as the unique cross-linker. The org-ATP is in situ produced directly in the form of water-in-oil emulsion and then used as prepared for the inverse suspension polymerization without being separated; so the proposed strategy is much simpler compared with the traditional methods. Almost all acrylic acid (AA) monomers have been successfully grafted onto ATP to form the 3-dimensional cross-linking network of the nanocomposite hydrogels, in which the org-ATP nanorods, as cross-linker and structural strengthening agent, drastically improves the mechanical stability of the resulting ATP/PAA hydrogels. The nanocomposite hydrogels exhibit selective adsorption toward the Pb(II) ion with a maximum adsorption capacity of 42 mg/g, and the adsorbed Pb(II) ion could be eluted completely. The optimized nanocomposite hydrogel adsorbent also exhibits an excellent reusability. The adsorption capacity and desorption rate remain unchanged for at least 10 cycles of adsorption–desorption. These strong points make it a potential adsorbent for heavy metal-contaminated water.

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Section: ■ Results and Discussionmentioning

confidence: 99%

Attapulgite/Poly(acrylic acid) Nanocomposite (ATP/PAA) Hydrogels with Multifunctionalized Attapulgite (org-ATP) Nanorods as Unique Cross-linker: Preparation Optimization and Selective Adsorption of Pb(II) Ion

Liu

Jiang

Zhu

et al. 2013

ACS Sustainable Chem. Eng.

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“…This result can also be concluded by comparing the curves of Figure . The Q m values of poly(MMA- co -MA)/APTMS-Fe 3 O 4 MNC obtained by the Langmuir equation are compared with other adsorbents found from literature (Table ). ,− According to Table , the adsorption capacity of MNC adsorbent is much higher than those of almost all of the reported adsorbents in this table. This indicates that MNC, poly(MMA- co -MA)/APTMS-Fe 3 O 4 , can be a good candidate for the applications related to heavy metal ion removal.…”

Section: Results and Discussionmentioning

confidence: 93%

Removal of Metal Ions from Water Using Poly(MMA-co-MA)/Modified-Fe₃O₄ Magnetic Nanocomposite: Isotherm and Kinetic Study

Masoumi

Ghaemy

Bakht

2014

Ind. Eng. Chem. Res.

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Magnetic Fe 3 O 4 nanoparticles were synthesized, surface modified with an amino-terminated silane coupling agent, 3-aminopropyltrimethoxysilane (APTMS), and characterized by Fourier transform infrared spectroscopy (FT-IR), field scanning electron microscopy (FESEM), and X-ray diffraction (XRD). A copolymer of methyl methacrylate (MMA) and maleic anhydride (MA), poly(MMA-co-MA), was synthesized by radical polymerization and transformed into magnetic nanocomposite (MNC) by chemical immobilization of APTMS-Fe 3 O 4 with the anhydride groups of poly(MMA-co-MA) chains. The MNC was characterized by FT-IR, XRD, FESEM, TEM, and atomic force microscopy (AFM) and used for the removal of metal ions from water. Various factors influencing adsorption capacity such as contact time, absorbent dosage, pH, and initial concentration of ions were investigated. The adsorption kinetics showed a pseudo-second-order rate law, indicating chemical sorption as the ratelimiting step mechanism. Sorption of metal ions to MNC agreed well with the Langmuir adsorption model with the maximum adsorption capacity of 90. 09, 90.91, 109.89, and 111.11 mg g −1 for Co 2+ , Cr 3+ , Zn 2+ , and Cd 2+ , respectively.

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“…28 However, after 9 h, the intraparticle diffusion seems to be rate-controlling step. During the adsorption process to Pb 2+ , the adsorbed Pb 2+ ions on the surface of the ATP/FA/PAA beads act as metallic ion cross-linkers and increase the number of cross-linking points, 29 which in turn increases the elastic shrinkage of polymer chains and therefore decreases the grid in the 3-D structure of the ATP/FA/PAA beads. As a result, the further permeation of Pb 2+ ions is hindered.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Design of Magnetic Attapulgite/Fly Ash/Poly(acrylic acid) Ternary Nanocomposite Hydrogels and Performance Evaluation as Selective Adsorbent for Pb²⁺ Ion

Jiang

Liu

2014

ACS Sustainable Chem. Eng.

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A facile inverse suspension polymerization approach was developed for the preparation of the magnetic attapulgite/fly ash/poly(acrylic acid) (ATP/FA/PAA) ternary nanocomposite hydrogels, after the inorganic materials were in situ modified. In the optimized preparation condition obtained via the L9(34) orthogonal experiments, about 95% of the monomer had been grafted onto the inorganic materials to form the three-dimensional cross-linking network of the ternary nanocomposite hydrogels. The ternary nanocomposite hydrogels exhibited good adsorption selectivity toward the Pb2+ ion, and the adsorbed ion could be completely desorbed with HCl aqueous solution. Furthermore, the ternary nanocomposite hydrogels possessed high mechanical stability and magnetic property. These features as well as their low cost make them a potential adsorbent for treating Pb2+-contaminated water.

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Separation and recovery of lead from a low concentration solution of lead(II) and zinc(II) using the hydrolysis production of poly styrene-co-maleic anhydride

Cited by 15 publications

References 29 publications

Attapulgite/Poly(acrylic acid) Nanocomposite (ATP/PAA) Hydrogels with Multifunctionalized Attapulgite (org-ATP) Nanorods as Unique Cross-linker: Preparation Optimization and Selective Adsorption of Pb(II) Ion

Attapulgite/Poly(acrylic acid) Nanocomposite (ATP/PAA) Hydrogels with Multifunctionalized Attapulgite (org-ATP) Nanorods as Unique Cross-linker: Preparation Optimization and Selective Adsorption of Pb(II) Ion

Removal of Metal Ions from Water Using Poly(MMA-co-MA)/Modified-Fe₃O₄ Magnetic Nanocomposite: Isotherm and Kinetic Study

Design of Magnetic Attapulgite/Fly Ash/Poly(acrylic acid) Ternary Nanocomposite Hydrogels and Performance Evaluation as Selective Adsorbent for Pb²⁺ Ion

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Separation and recovery of lead from a low concentration solution of lead(II) and zinc(II) using the hydrolysis production of poly styrene-co-maleic anhydride

Cited by 15 publications

References 29 publications

Attapulgite/Poly(acrylic acid) Nanocomposite (ATP/PAA) Hydrogels with Multifunctionalized Attapulgite (org-ATP) Nanorods as Unique Cross-linker: Preparation Optimization and Selective Adsorption of Pb(II) Ion

Attapulgite/Poly(acrylic acid) Nanocomposite (ATP/PAA) Hydrogels with Multifunctionalized Attapulgite (org-ATP) Nanorods as Unique Cross-linker: Preparation Optimization and Selective Adsorption of Pb(II) Ion

Removal of Metal Ions from Water Using Poly(MMA-co-MA)/Modified-Fe3O4 Magnetic Nanocomposite: Isotherm and Kinetic Study

Design of Magnetic Attapulgite/Fly Ash/Poly(acrylic acid) Ternary Nanocomposite Hydrogels and Performance Evaluation as Selective Adsorbent for Pb2+ Ion

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Product

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Removal of Metal Ions from Water Using Poly(MMA-co-MA)/Modified-Fe₃O₄ Magnetic Nanocomposite: Isotherm and Kinetic Study

Design of Magnetic Attapulgite/Fly Ash/Poly(acrylic acid) Ternary Nanocomposite Hydrogels and Performance Evaluation as Selective Adsorbent for Pb²⁺ Ion