Removal of arsenic from water by combination of electro-oxidation and polymer enhanced ultrafiltration. Soil Sci. Macromolecules 10, 949954. doi: 10.1016/j.jcis.2015.02.062, Brmmer, G. W., Barrow, N. J., and Fischer, L. (2013). Mater. J. Eur. doi: 10.1039/C4TA04518A, Snchez, J., Butter, B., Basez, L., Rivas, B. L., and Ottakam Thotiyl, M. (2017).
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doi: 10.1016/j.cej.2012.03.065, Valle, H., Snchez, J., and Rivas, B. L. (2015). The separation process is evaluated as a percentage of removal [R(%)] versus a filtration factor (Z). Mater. Res. In general, P(ClVBTA) and P(ClAETA) showed higher retention capacities to As(V) species at pH values 8 and 6 compared to 4. Water-soluble polymers containing quaternary ammonium groups have been studied in combination with ultrafiltration membranes as arsenic sorbents. Preparation of poly(vinylalcohol)/poly(acrylamide-co-vinyl imidazole)/-Fe2O3 semi-IPN nanocomposite and their application for removal of heavy metal ions from water. The LPR technique with poly(2-acrylamido-2-methylpropanesulfonate sodium) (PAMPS) as sorbent was used for the removal of heavy metal ions from water. Using higher tin content (5, 10, and 20 wt-%), the retention of As(III) was improved at (600:1) and (400:1) poly(AA)-Sn:As(III) mole ratio. The photocatalytic oxidation of As(III) was performed using TiO2 under UV-A light. Hazard. J. Appl. Soc. A new hybrid (polymer/inorganic) fibrous sorbent for arsenic removal from drinking water. Front. Desalination 270, 5763. doi: 10.1007/s00289-012-0785-z, Rivas, B. L., Pereira, E. D., and Moreno-Villoslada, I. A 546, 9198. Simultaneous removal of Cu, Mn and Zn from drinking water with the use of clinoptilolite and its Fe-modified form. Characteristics of equilibrium, kinetics studies for adsorption of Hg(II), Cu(II), and Ni(II) ions by thiourea-modified magnetic chitosan microspheres. For this reason water-soluble complexes of tin (II) salt was prepared in a matrix of poly(acrylic acid), PAA. J. Biol. Environ. Sci. A. In addition, the folding of the linear polymers with AMPS groups in its structure avoids the electrostatic repulsion between the sulfonate groups contributing to the accessibility of the metal ions (Fisher et al., 1977). Arsenic removal using a polymeric/inorganic hybrid sorbent. Eng. Prog. Immobilization of chitosan nanolayers on the surface of nano-titanium oxide as a novel nanocomposite for efficient removal of La(III) from water. On the other hand, a non-crosslinked polymer or soluble polymers may also be used for the water decontamination. The LPR technique was also used in the removal of Cr(VI) ions from aqueous solution using water-soluble poly(diallyldimethylammonium chloride), PDDA, and subsequent electrochemical reduction of Cr(VI) to Cr(III) (Snchez et al., 2017). London: CRC Press. Total Environ. Polymerzirconium oxide nanoparticles have been successfully applied in the sorption of As(V), As(III), Cr(VI), and fluoride (Kosmulski, 2002; Mandal et al., 2013; Pan et al., 2013, 2014; Padungthon et al., 2014; Hua et al., 2017). Bio-nanocomposites for food packaging applications. doi: 10.1021/es4013382. P(EI) exhibited the highest metal retention capacities at higher pH values, where the functional groups could coordinate and remove more easily the metal ions. doi: 10.1016/j.jhazmat.2015.04.068, Thakur, S. S., and Chauhan, G. S. (2014). Ind. Desalination 252, 3339. Eng. Polymer composite adsorbents using particles of molecularly imprinted polymers or aluminium oxide nanoparticles for treatment of arsenic contaminated waters. A. In addition, different polymer:As(V) molar ratios (31:1, 20:1, 10:1, 6:1, and 3:1) have been studied. Adsorption behavior of EDTA-graphene oxide for Pb (II) removal. Copper recovery via polyelectrolyte enhanced ultrafiltration followed by dithionite based chemical reduction: effects of solution pH and polyelectrolyte type. (2006), Rivas and Aguirre (2007). (2015). J. 53, 48384849. Study on superabsorbent composite.
J. The behavior of different metal-polymer complex (3, 5, 10, and 20 wt% of tin content) is presented in Figure 4. Effect of the polymer: As(V) molar ratio on the retention of As(V) for the two polymers at a pH of 8 and filtration factor of Z = 10. Effect of the coupling agent on the properties of poly(acrylic acid)Al2O3 interpenetrating hybrids and sorption of metal ions. doi: 10.1016/j.impact.2016.09.004, Zhao, X., Lv, L., Pan, B., Zhang, W., Zhang, S., and Zhang, Q. 211, 317331. On the other hand, the retention capacity of copolymer was lower compared to PAMPS. The PVP contain an electron donor amide functional group that acts as a ligand in the complexation of metal ions (Valle et al., 2015). 47, 93479354. Metal Oxides: Chemistry and Applications. In addition, for the recuperation of arsenic from contaminated media, new methods on identification and speciation of different form of arsenic have been developed with the aim to improve the levels of sensibility, speed and efficiency on measurements (Thotiyl et al., 2012). One alternative for improving these results is the use of copolymer based on AMPS with a nonionic monomer with a higher tendency to coordinate one of several metal ions in solution (Valle et al., 2015). Sci. The results showed that by using P(GMA-NMG) as supporting electrolyte during the complete EO of As(III) to As(V) followed by LPR separation, almost 80% of As(V) was removed at pH 10 (Arar et al., 2014). Poly (N-vinylpyrrolidone-co-2-acrylamido-2-methylpropanesulfonate sodium): synthesis, characterization, and its potential application for the removal of metal ions from aqueous solution. Organicinorganic interpenetrated hybrids based on cationic polymer and hydrous zirconium oxide for arsenate and arsenite removal. Polym. IUPAC (1997). 33, 11191198. Adsorption of heavy metal ions with carbon nanotubes. Sci.
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1. Desalin. doi: 10.1016/j.mseb.2013.03.011, Alexandratos, S. D. (2009). 361, 509520. Using poly(AA)-Sn (10 wt-% theoretical tin content), 90% of As(III) retention is obtained at Sn-As(III) 20:1 and a poly(AA)-Sn:As(III) 400:1 mole ratio (Rivas and Aguirre, 2007). Using the sorptiondesorption process, the results indicated that this PDDA can release Cr(VI) and be regenerated. (2014). 31, 360372. doi: 10.1002/ep.11876, Asman, G. (2009). Studies about the use of water-soluble copolymers that contain anionic and cationic sites were performed for the retention of As(V) from water. 31, 8692. Singha Deb, A. K., Dwivedi, V., Dasgupta, K., Musharaf Ali, S., and Shenoy, K. T. (2017). 42, 37863790. Sci. doi: 10.1016/j.chemosphere.2004.03.006, DeMarco, M. J., Sengupta, A. K., and Greenleaf, J. E. (2003). Compendium of Chemical Terminology. doi: 10.1016/j.scitotenv.2017.07.045, Cui, H., Su, Y., Li, Q., Gao, S., and Shang, J. K. (2013). Polym. ACS Appl. doi: 10.1002/app.24093, Rivas, B. L., Hube, S., Snchez, J., and Pereira, E. (2012). Effects of crystal modification on the binding of trace metals and arsenate by goethite. Enhanced removal of fluoride by polystyrene anion exchanger supported hydrous zirconium oxide nanoparticles. doi: 10.1016/S0043-1354(02)00238-5, Dong, Q., Liu, J., Song, L., and Shao, G. (2011). Molinari, R., and Argurio, P. (2017). doi: 10.1016/j.cej.2016.12.122, Rajput, S., Singh, L. P., Pittman, C. U. Jr., and Mohan, D. (2017). Sep. Sci. B Biointerfaces 103, 523529. (2003). Synthesis, characterization and application of titanium oxide nanocomposites for removal of radioactive cesium, cobalt and europium ions. 193-194, 2130. The tin-metal salt is incorporated to the PAA in order to remove As(III) from an aqueous solution (Rivas and Aguirre, 2007). J. Plasma-induced grafting of cyclodextrin onto multiwall carbon nanotube/iron oxides for adsorbent application.
J. Comparatively PVP and PAMPS exhibited a different behavior toward the metal ions. (2010). Prog. doi: 10.1021/je301168m, Zhang, Y., Wu, B., Xu, H., Liu, H., Wang, M., He, Y., et al. Sci. No use, distribution or reproduction is permitted which does not comply with these terms. Synthesis of water-soluble cationic polymers with star-like structure based on cyclodextrin core via ATRP. doi: 10.1016/j.cej.2016.10.126, Spitalsky, Z., Tasis, D., Papagelis, K., and Galiotis, C. (2010). Exceptional arsenic (III,V) removal performance of highly porous, nanostructured ZrO2 spheres for fixed bed reactors and the full-scale system modeling. Polym. Effect of porosity of goethite on the sorption of six heavy metal ions. Boca Raton, FL: CRC Press. 45, 91449149. doi: 10.1021/cm9601143, Xu, Y., Axe, L., Yee, N., and Dyer, J. Another similar hybrid was prepared using aluminum oxyhydroxide as the inorganic moiety (Prez et al., 2016). Eng. Eng. A great advantage of the LPR is the retention of inorganic species in a homogenous medium, avoiding in great part the mass transfer phenomena or diffusion phenomena that are present in a heterogeneous system. Ahmadi, A., Heidarzadeh, S., Mokhtari, A. R., Darezereshki, E., and Harouni, H. A. Norwich: Iwa Publishing. (2009).
27, 15571568. (2014). Polym. Chem. For LPR studies, a polymer with a high molecular weight (above 100 kDa) interacts with the anions, and the ultrafiltration membrane retains the new polymer-anion. doi: 10.1016/j.cej.2015.01.068, Urbano, B., and Rivas, B. L. (2012). 198, 113120. The preparation of well-defined water soluble-swellable (Co)polymers by atom transfer radical polymerization, in Associative Polymers in Aqueous Media, ed J. Edward Glass (Washington, WA: American Chemical Society), 5271. 39, 65086515. doi: 10.1016/j.jhazmat.2011.10.016, Iesan, C. M., Capat, C., Ruta, F., and Udrea, I. Lately the development of new water-soluble polymers and its use in combination with ultrafiltration by membranes is considered between the most promissory techniques for enrichment and separation of ions from aqueous solution. Recent advance in research on halloysite nanotubes-polymer nanocomposite. Chem. doi: 10.1016/j.cej.2014.02.093, Pan, B., Xu, J., Wu, B., Li, Z., and Liu, X. Interfaces 8, 30123020. 46, 41114120. (2011). Biotech. Environ. 71, 191200. Sci. 80, 436441. 6:320. doi: 10.3389/fchem.2018.00320. doi: 10.1039/c3py21128b, Yuksel, S., Rivas, B. L., Snchez, J., Mansilla, H. D., Yaez, J., Kochifas, P., et al. Sci. However, the reactivity of the anionic polymer chains covered by cationic polymer chains may be considered higher than the free chain. Adsorption of Cu(II), Co(II), and Ni(II) ions by modified magnetic chitosan chelating resin. Chem. A water-soluble polymer containing quaternary ammonium groups was used as an extracting reagent in the LPR process. J. Colloid Interface Sci. Amsterdam: Elsevier BV. Technol. 172, 958963. Chem. The scientific community is interested to find new methods to produce water of quality, using technologies of low cost, easy use, and higher efficiency compared to conventional treatment such as coagulation and flocculation, chemical precipitation, electrochemical treatment, adsorption, and ion-exchange (Asman, 2009; Chen et al., 2009; Doula, 2009; Nanseu-Njiki et al., 2009; Duan et al., 2010; Jiang et al., 2010). J. Colloid Interface Sci. 48, 26522658. 313, 899911. Chem.
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