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Synthesis of Amidoxime Adsorbent by Radiation-Induced Grafting of Acrylonitrile/Acrylic Acid on Polyethylene Film and Its Application in Pb Removal. Polymers (Basel) 2022; 14:polym14153136. [PMID: 35956653 PMCID: PMC9370772 DOI: 10.3390/polym14153136] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Revised: 07/11/2022] [Accepted: 07/13/2022] [Indexed: 02/04/2023] Open
Abstract
In the aquatic environment, heavy metals such as lead ions Pb (II) are of particular importance. These are due to Pb (II) being toxic at concentrations over 0.01 mg/L, when taken continuously over an extended length of time. Organs including the heart, gut, and kidneys are seriously harmed by Pb (II) intoxication. The neurological, reproductive, and bone systems are also affected. The removal of Pb (II) from aquatic environments is, therefore, crucial. Low density Polyethylene (LDPE) is grafted by radiation with Acrylonitrile and acrylic acid (PE-g-AN/AAc) for the adsorption of Pb (II). Factors that control the grafting process for optimum conditions, such as the effect of solvents, the air atmosphere, inhibitors, comonomer concentration, and composition and irradiation dose, are studied to obtain a high grafting yield without homopolymer formation and a higher water uptake. The results showed that the addition of 2.5% by wt% ferric chloride salt effectively inhibits homoploymerization of a mixture of 30% methanol and 70% H2O used as a solvent in nitrogen. The highest graft yield obtained was 320% at a 25 kGy radiation dose with an 80/20 monomer composition and 60% comonomer concentration. The resulting composite films were characterized by XRD to analyze the dispersion properties of the material, SEM for the surface morphology, FTIR analysis for the functional groups, TGA, DSC for the thermal stability and elongation, and tensile strength for the mechanical properties. The uptake of Pb (II) from lead nitrate aqueous solution by (PE-g-AN/AAc) was observed under different conditions of the degree of grafting, contact time, metal ion concentration, and pH. The results obtained suggest LDPE-g-p (AN/AAc) as a superabsorbent for the Pb (II) ion’s removal from an aqueous solution.
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Mahmoud GA, Ezz El-Din MR, Mohamed AA. Safe isolation and storage of simulated radioactive waste contains cesium and cobalt ions by magnetic natural-based nanocomposites. Polym Bull (Berl) 2022. [DOI: 10.1007/s00289-021-03637-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Huang Z, Cheng Z. Recent advances in adsorptive membranes for removal of harmful cations. J Appl Polym Sci 2019. [DOI: 10.1002/app.48579] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Zheng‐Qing Huang
- Hubei Provincial Key Laboratory of Green Materials for Light Industry, Collaborative Innovation Center of Green Light‐Weight Materials and ProcessingSchool of Materials and Chemical Engineering, Hubei University of Technology Wuhan 430068 China
| | - Zheng‐Fa Cheng
- Hubei Provincial Key Laboratory of Green Materials for Light Industry, Collaborative Innovation Center of Green Light‐Weight Materials and ProcessingSchool of Materials and Chemical Engineering, Hubei University of Technology Wuhan 430068 China
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Rahman N, Hossen MS, Miah AR, Marjub MM, Dafader NC, Shahnaz S, Alam MF. Removal of Cu(II), Pb(II) and Cr(VI) ions from aqueous solution using amidoximated non-woven polyethylene-g-acrylonitrile fabric. JOURNAL OF ENVIRONMENTAL HEALTH SCIENCE & ENGINEERING 2019; 17:183-194. [PMID: 31297208 PMCID: PMC6582179 DOI: 10.1007/s40201-019-00339-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Accepted: 01/07/2019] [Indexed: 06/10/2023]
Abstract
Pre-irradiation method was applied to graft acrylonitrile (AN) onto non-woven polyethylene film. Graft yield reached 130% at 70 kGy radiation dose, 60% monomer concentration and 4 h reaction time when H2SO4 was used as an additive. The modification of AN grafted films with hydroxyl amine hydrochloride was done for the preparation of amidoxime adsorbent. The constructed adsorbent was characterized using FTIR, DMA and SEM. The amidoxime adsorbent was used for adsorption of Cu(II), Pb(II) and Cr(VI). Adsorption capacity was investigated under different conditions: contact time, pH and initial metal ion concentration. The optimum condition for maximum adsorption was found to be contact time 72 h and initial metal concentration 500 ppm for all the metal ions studied and pH 5.2 for Cu(II), 5.4 for Pb(II), 1.5 for Cr(VI). Kinetic adsorption data was elucidated using pseudo-first-order and pseudo-second-order equations. The equilibrium experimental data of metal adsorption matched Langmuir isotherm model. From the Langmuir equation, the monolayer saturation adsorption capacity (highest adsorption capacity) of the adsorbent was found to be 74.62 mg/g for Cu(II), 107 mg/g for Pb(II) and 156.25 mg/g for Cr(VI). The thermodynamics of metal adsorption was also investigated. Furthermore, desorption and reuse of the adsorbent film was studied. The results suggest that the adsorbent can be effective for adsorption of Cu(II), Pb(II) and Cr(VI).
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Affiliation(s)
- Nazia Rahman
- Nuclear and Radiation Chemistry Division, Institute of Nuclear Science and Technology, Atomic Energy Research Establishment, Bangladesh Atomic Energy Commission, G. P. O. Box-3787, Dhaka, Bangladesh
| | | | - Abdur Rahim Miah
- Nuclear and Radiation Chemistry Division, Institute of Nuclear Science and Technology, Atomic Energy Research Establishment, Bangladesh Atomic Energy Commission, G. P. O. Box-3787, Dhaka, Bangladesh
| | | | - Nirmal Chandra Dafader
- Nuclear and Radiation Chemistry Division, Institute of Nuclear Science and Technology, Atomic Energy Research Establishment, Bangladesh Atomic Energy Commission, G. P. O. Box-3787, Dhaka, Bangladesh
| | - S. Shahnaz
- Nuclear and Radiation Chemistry Division, Institute of Nuclear Science and Technology, Atomic Energy Research Establishment, Bangladesh Atomic Energy Commission, G. P. O. Box-3787, Dhaka, Bangladesh
| | - M. F. Alam
- Nuclear and Radiation Chemistry Division, Institute of Nuclear Science and Technology, Atomic Energy Research Establishment, Bangladesh Atomic Energy Commission, G. P. O. Box-3787, Dhaka, Bangladesh
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Nasef SM, M TM, Mahmoud GA. Characterization and in vitro drug release properties of core–shell hydrogel prepared by gamma irradiation. INT J POLYM MATER PO 2017. [DOI: 10.1080/00914037.2017.1362642] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Shaimaa M. Nasef
- Department of Polymer chemistry, National Center for Radiation Research and Technology, Nasr City, Cairo, Egypt
| | - Tarek M. M
- Department of Polymer chemistry, National Center for Radiation Research and Technology, Nasr City, Cairo, Egypt
| | - Ghada A. Mahmoud
- Department of Polymer chemistry, National Center for Radiation Research and Technology, Nasr City, Cairo, Egypt
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Liu YM, Ju XJ, Xin Y, Zheng WC, Wang W, Wei J, Xie R, Liu Z, Chu LY. A novel smart microsphere with magnetic core and ion-recognizable shell for Pb2+ adsorption and separation. ACS APPLIED MATERIALS & INTERFACES 2014; 6:9530-9542. [PMID: 24897191 DOI: 10.1021/am501919j] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Smart core-shell microspheres for selective Pb(2+) adsorption and separation have been developed. Each microsphere is composed of a Pb(2+) recognizable poly(N-isopropylacrylamide-co-benzo-18-crown-6-acrylamide) (PNB) shell and a magnetic Fe3O4 core. The magnetic PNB core-shell microspheres show excellent Pb(2+) adsorption selectivity among the coexisting Cd(2+), Co(2+), Cr(3+), Cu(2+), Ni(2+), Zn(2+), K(+), and Ca(2+) ions by forming stable B18C6Am/Pb(2+) host-guest complexes and exhibit an interesting temperature-dependent Pb(2+) adsorption. The inner independent magnetic Fe3O4 cores enable the Pb(2+)-adsorbed microspheres with a magnetically guided aggregation to be separated from the treated solution using a remotely controlled manner. The isothermal Pb(2+) adsorption result fits well with the Freundlich isotherm. The magnetic PNB core-shell microspheres show very fast adsorption of Pb(2+), and the adsorption process of Pb(2+) onto magnetic PNB core-shell microspheres fits well with the pseudo-second-order model. Moreover, Pb(2+)-adsorbed microspheres can be regenerated by simply increasing the operation temperature and washing with deionized water. The proposed magnetic PNB core-shell microspheres provide a promising candidate for Pb(2+) adsorbents with selectively separable and efficiently reusable abilities.
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Affiliation(s)
- Ying-Mei Liu
- School of Chemical Engineering, ‡State Key Laboratory of Polymer Materials Engineering, and Collaborative Innovation Center for Biomaterials Science and Technology, Sichuan University , Chengdu, Sichuan 610065, People's Republic of China
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Singh A, Kumawat IK. Synthesis and characterization of a new guar gum 4-hydroxybenzoic acid resin and its use for the separation of heavy metal ions in industrial effluents. POLYM ENG SCI 2012. [DOI: 10.1002/pen.23294] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Anirudhan TS, Jalajamony S. Cellulose-based anion exchanger with tertiary amine functionality for the extraction of arsenic(V) from aqueous media. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2010; 91:2201-2207. [PMID: 20621411 DOI: 10.1016/j.jenvman.2010.05.019] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2009] [Revised: 05/03/2010] [Accepted: 05/28/2010] [Indexed: 05/29/2023]
Abstract
A novel cellulose-based anion exchanger (Cell-AE) with tertiary amine functionality was synthesized by graft polymerization reaction of cellulose and glycidyl methacrylate using N,N'-methylene-bis-acrylamide as a crosslinker and benzoyl peroxide as an initiator, followed by dimethylamine (amination) and acid (HCl) treatment. The chemical modification was confirmed by infrared spectroscopy and CHN analysis. The anion exchanger was used in batch processes to study AS(V) adsorption in solutions. The operating variables studied were pH, contact time, initial As(V) concentration, sorbent mass, and ionic strength. The process was affected by solution pH with an optimum adsorption occurring at pH 6.0. Adsorption equilibrium was achieved within 1 h. Increasing ionic strength of solution negatively affected the arsenic uptake. The adsorption process performed more than 99.0% of As(V) removal from an initial concentration of 25.0 mg/L. The process of adsorption followed pseudo-second-order kinetics. The adsorption equilibrium isotherm data were analyzed using the Langmuir, Freundlich, Redlich-Peterson and Langmuir-Freundlich equations. The Langmuir-Freundlich isotherm described the adsorption data over the concentration range 25-400 mg/L. The adsorption mechanism appears to be a ligand-exchange process. A simulated groundwater sample was treated with Cell-AE to demonstrate its efficiency in removing As(V). The adsorbed As(V) ions were desorbed effectively by a 0.1 M NaOH solution.
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Affiliation(s)
- T S Anirudhan
- Department of Chemistry, University of Kerala, Kariavattom, Trivandrum 695 581, India.
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Feng X, Li ZF, Xue SF, Tao Z, Zhu QJ, Zhang YQ, Liu JX. Complexation of Cyclohexanocucurbit[6]uril with Cadmium Ions: X-ray Crystallographic and Electrochemical Study. Inorg Chem 2010; 49:7638-40. [DOI: 10.1021/ic1013494] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Xing Feng
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University, Guiyang 550025, People's Republic of China
| | - Zhong-Fei Li
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University, Guiyang 550025, People's Republic of China
| | - Sai-Feng Xue
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University, Guiyang 550025, People's Republic of China
| | - Zhu Tao
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University, Guiyang 550025, People's Republic of China
| | - Qian-Jiang Zhu
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University, Guiyang 550025, People's Republic of China
| | - Yun-Qian Zhang
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University, Guiyang 550025, People's Republic of China
| | - Jing-Xin Liu
- College of Chemistry and Chemical Engineering, Anhui University of Technology, Maanshan 243002, People's Republic of China
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Wojnárovits L, Földváry C, Takács E. Radiation-induced grafting of cellulose for adsorption of hazardous water pollutants: A review. Radiat Phys Chem Oxf Engl 1993 2010. [DOI: 10.1016/j.radphyschem.2010.02.006] [Citation(s) in RCA: 121] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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12
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Liang X, Jia X, Yang Y, Hou L. Synthesis, characterization and spectroscopic studies of copolymer of styrene with 4-oxe-4(P-hydroxyl phenylamino) but-2-enoic acid and corresponding fluorescent macromolecular lanthanide(III) complexes. Eur Polym J 2010. [DOI: 10.1016/j.eurpolymj.2010.01.013] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Jeun JP, Hua ZJ, Kang PH, Nho YC. Electron-beam-radiation-induced grafting of acrylonitrile onto polypropylene fibers: Influence of the synthesis conditions. J Appl Polym Sci 2010. [DOI: 10.1002/app.31062] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Abuilaiwi FA, Atieh MA, Ahmad MB, Ibrahim NA, Rahman MZA, Yunus WMZW. Preparation and Characterization of Polyamidoxime Chelating Resin from Rubberwood Fibre-G-Polyacrylonitrile. ADSORPT SCI TECHNOL 2009. [DOI: 10.1260/0263-6174.27.7.661] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
Grafted rubberwood fibre was converted to polyamidoxime ion-exchange resin in order to remove heavy metal ions from aqueous solution. The cation-exchange resin existed predominantly in the syn-hydroxyamino form. The water uptake by the resin was ca. 31 g/g dry resin while its hydrogen ion capacity was 3.6 mmol/g. The adsorption capacity of the resin towards different metal ions from wastewater was determined at different pH values within the range 1–6. The prepared chelating ion-exchanger exhibited the highest adsorption capacity towards Cu2+ ions (3.83 mmol/g), followed by Cd2+, Fe3+, Pb2+, Ni2+ and Co3+ ions, respectively. The results showed that the adsorption capacity depended on the solution pH. Polyamidoxime ion-exchange resin was also used to separate Co3+ and Ni2+ ions from Cu2+ ions using a column technique. On passing Cu2+/Ni2+ and Cu2+/Co3+ ion mixtures through the resin at pH 3, Cu2+ ions were adsorbed by the resin but no sorption of Ni2+ or Co3+ ions was detected. Approximately 98% of the Cu2+ ions could be desorbed from the resin. FT-IR spectroscopy was used to confirm the conversion of polyacrylonitrile-g-rubberwood fibre to polyamidoxime.
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Affiliation(s)
- Faraj A. Abuilaiwi
- Center of Research Excellence in Nanotechnology, King Fahd University of Petroleum and Minerals, 31261 Dhahran, Saudi Arabia
- Hafr Al-Batin Community College, King Fahd University of Petroleum and Minerals, 31991 Hafr Al-Batin, Saudi Arabia
| | - Muataz Ali Atieh
- Department of Chemical Engineering, King Fahd University of Petroleum and Minerals, 31261 Dhahran, Saudi Arabia
| | - Mansor B. Ahmad
- Faculty of Science and Environmental Studies, Department of Chemistry, University Putra Malaysia, 43400 UPM Serdang, Malaysia
| | - Nor Azowa Ibrahim
- Faculty of Science and Environmental Studies, Department of Chemistry, University Putra Malaysia, 43400 UPM Serdang, Malaysia
| | - Mohamad Zaki Ab. Rahman
- Faculty of Science and Environmental Studies, Department of Chemistry, University Putra Malaysia, 43400 UPM Serdang, Malaysia
| | - Wan Md. Zin Wan Yunus
- Faculty of Science and Environmental Studies, Department of Chemistry, University Putra Malaysia, 43400 UPM Serdang, Malaysia
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Singh V, Sharma AK, Maurya S. Efficient Cadmium(II) Removal from Aqueous Solution Using Microwave Synthesized Guar Gum-Graft-Poly(ethylacrylate). Ind Eng Chem Res 2009. [DOI: 10.1021/ie801416z] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Vandana Singh
- Department of Chemistry, University of Allahabad, Allahabad-211002, India
| | - Ajit Kumar Sharma
- Department of Chemistry, University of Allahabad, Allahabad-211002, India
| | - Sadhana Maurya
- Department of Chemistry, University of Allahabad, Allahabad-211002, India
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Singh V, Kumari P, Pandey S, Narayan T. Removal of chromium (VI) using poly(methylacrylate) functionalized guar gum. BIORESOURCE TECHNOLOGY 2009; 100:1977-1982. [PMID: 19056258 DOI: 10.1016/j.biortech.2008.10.034] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2008] [Revised: 10/19/2008] [Accepted: 10/21/2008] [Indexed: 05/27/2023]
Abstract
Using persulfate/ascorbic acid redox pair, poly(methylacrylate) was grafted on to guar gum and the conditions for the grafting were optimized. The copolymer sample having maximum %G was evaluated for the removal of Cr(VI) and the sorption conditions were optimized. The sorption was found pH dependent, pH 1.0 being the optimum value. Sorption data at pH 1.0 were modeled using both the Langmuir and Freundlich isotherms where the data fitted better to Freundlich isotherm. The equilibrium sorption capacity of 29.67mg/g was determined from the Langmuir isotherm. The sorption followed a pseudo-second-order kinetics with a rate constant 2.5x10(-4)gmg(-1) min(-1). The grafted product was also evaluated for Cr(VI) removal from local electroplating industrial waste water. The regeneration experiments revealed that the guar-graft-poly(methylacrylate) could be successfully reused for five cycles. In the present study conductivity measurements were used instead of conventional photometric method for determining Cr(VI) concentration in the equilibrium solutions and the results obtained have been compared with photometric method. Optimum Cr(VI) binding under highly acidic conditions indicated significant contribution of non electrostatic forces in the adsorption process.
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Affiliation(s)
- Vandana Singh
- Department of Chemistry, University of Allahabad, Allahabad 211002, Uttar Pradesh, India.
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Zu J, Zhang J, Sun G, Zhou R, Liu Z. Preparation of cation-exchange membrane containing bi-functional groups by radiation induced grafting of acrylic acid and sodium styrene sulfonate onto HDPE: Influence of the synthesis conditions. J Radioanal Nucl Chem 2008. [DOI: 10.1007/s10967-007-7226-8] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Bernal-Martínez LA, Hernández-López S, Barrera-Díaz C, Ureña-Núñez F, Bilyeu B. Pb(II) Sorption under Batch and Continuous Mode Using Natural, Pretreated, and Amino-Modified Ectodermis of Opuntia. Ind Eng Chem Res 2008. [DOI: 10.1021/ie070861h] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- L. A. Bernal-Martínez
- Facultad de Química, Universidad Autónoma del Estado de México, Paseo Colón Intersección Paseo Tollocan S/N. C.P. 50120, Toluca, Estado de México, México, Instituto Nacional de Investigaciones Nucleares, A.P.18-1027, Col. Escandón, Delegación Miguel Hidalgo, C.P. 11801, D.F., México, and Department of Materials Science and Engineering, University of North Texas, P.O. Box 305310, Denton, Texas 76203-5310
| | - S. Hernández-López
- Facultad de Química, Universidad Autónoma del Estado de México, Paseo Colón Intersección Paseo Tollocan S/N. C.P. 50120, Toluca, Estado de México, México, Instituto Nacional de Investigaciones Nucleares, A.P.18-1027, Col. Escandón, Delegación Miguel Hidalgo, C.P. 11801, D.F., México, and Department of Materials Science and Engineering, University of North Texas, P.O. Box 305310, Denton, Texas 76203-5310
| | - C. Barrera-Díaz
- Facultad de Química, Universidad Autónoma del Estado de México, Paseo Colón Intersección Paseo Tollocan S/N. C.P. 50120, Toluca, Estado de México, México, Instituto Nacional de Investigaciones Nucleares, A.P.18-1027, Col. Escandón, Delegación Miguel Hidalgo, C.P. 11801, D.F., México, and Department of Materials Science and Engineering, University of North Texas, P.O. Box 305310, Denton, Texas 76203-5310
| | - F. Ureña-Núñez
- Facultad de Química, Universidad Autónoma del Estado de México, Paseo Colón Intersección Paseo Tollocan S/N. C.P. 50120, Toluca, Estado de México, México, Instituto Nacional de Investigaciones Nucleares, A.P.18-1027, Col. Escandón, Delegación Miguel Hidalgo, C.P. 11801, D.F., México, and Department of Materials Science and Engineering, University of North Texas, P.O. Box 305310, Denton, Texas 76203-5310
| | - B. Bilyeu
- Facultad de Química, Universidad Autónoma del Estado de México, Paseo Colón Intersección Paseo Tollocan S/N. C.P. 50120, Toluca, Estado de México, México, Instituto Nacional de Investigaciones Nucleares, A.P.18-1027, Col. Escandón, Delegación Miguel Hidalgo, C.P. 11801, D.F., México, and Department of Materials Science and Engineering, University of North Texas, P.O. Box 305310, Denton, Texas 76203-5310
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Fang J, Gu Z, Gang D, Liu C, Ilton ES, Deng B. Cr(VI) removal from aqueous solution by activated carbon coated with quaternized poly(4-vinylpyridine). ENVIRONMENTAL SCIENCE & TECHNOLOGY 2007; 41:4748-53. [PMID: 17695924 DOI: 10.1021/es061969b] [Citation(s) in RCA: 63] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
A composite sorbent (GAC-QPVP) was prepared by coating poly(4-vinylpyridine) onto a granular activated carbon, followed by cross-linking and quaternization processes. The sorbent was characterized by scanning electron microscopy, point of zero charge measurement, and BET analysis. Batch experiments with variable pH, ionic strength, and concentrations of Cr(VI), sorbent, and competing anions were conducted to evaluate the selective sorption of Cr(VI) from aqueous solutions. The results showed that Cr(VI) sorption rates could be described by a reversible second-order kinetics, and equilibrium uptake of Cr(VI) increased with decreasing pH, decreasing ionic strength, and increasing sorbent concentration. The estimated maximum equilibrium uptake of chromium was 53.7 mg/g at pH = 2.25, 30.7 mg/g at pH = 3.65, and 18.9 mg/g at pH = 6.03, much higher than the maximum capacity of PVP-coated silica gel, an adsorbent for Cr examined previously. When compared with the untreated granular activated carbon, sorption onto GAC-QPVP resulted in much less Cr(VI) reduction and subsequent release of Cr(III). The effect of phosphate, sulfate, and nitrate was minor on the selective sorption of Cr(VI). An ion exchange model that was linked with aqueous speciation chemistry described Cr(VI) sorption reasonably well as a function of pH, ionic strength, and Cr(VI) concentration. Model simulations suggested that sorbed Cr(VI) was partially reduced to Cr(III) on the sorbent when pH was less than 4. The presence of Cr(III) on the sorbent was confirmed by the X-ray photoelectron spectroscopic analysis. Overall, the study has demonstrated that GAC-QPVP can effectively remove Cr(VI) from aqueous solutions under a wide range of experimental conditions, without significant Cr(III) release associated with the virgin GAC treatment.
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Affiliation(s)
- Jun Fang
- Department of Civil and Environmental Engineering, University of Missouri-Columbia, Columbia Missouri 65211, USA
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Mahmoud GA. Preparation and properties of ion-exchange membranes prepared by the radiation-induced grafting of a styrene/acrylic acid comonomer onto low-density polyethylene. J Appl Polym Sci 2007. [DOI: 10.1002/app.25883] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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21
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Wang H, Chen W. Radiation-induced grafting of binary monomers containing HALS onto polypropylene. Radiat Phys Chem Oxf Engl 1993 2006. [DOI: 10.1016/j.radphyschem.2005.04.022] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Unnithan MR, Vinod VP, Anirudhan TS. Synthesis, Characterization, and Application as a Chromium(VI) Adsorbent of Amine-Modified Polyacrylamide-Grafted Coconut Coir Pith. Ind Eng Chem Res 2004. [DOI: 10.1021/ie0302084] [Citation(s) in RCA: 70] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Maya R. Unnithan
- Department of Chemistry, University of Kerala, Kariavattom, Trivandrum 695 581, India
| | - V. P. Vinod
- Department of Chemistry, University of Kerala, Kariavattom, Trivandrum 695 581, India
| | - T. S. Anirudhan
- Department of Chemistry, University of Kerala, Kariavattom, Trivandrum 695 581, India
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Hegazy ESA, Kamal H, Geleel MA, Maksoud AA. Removal of cesium-134 and cobalt-60 with radiation-grafted copolymers from their liquid wastes. J Appl Polym Sci 2004. [DOI: 10.1002/app.21299] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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