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Sorption and desorption studies of Pb(II) and Ni(II) from aqueous solutions by a new composite based on alginate and magadiite materials
dc.contributor.author | Attar, Keltoum |
dc.contributor.author | Demey Cedeño, Hary |
dc.contributor.author | Bouazza, Djamila |
dc.contributor.author | Sastre Requena, Ana María |
dc.contributor.other | Universitat Politècnica de Catalunya. Departament d'Enginyeria Química |
dc.date.accessioned | 2019-03-06T08:43:31Z |
dc.date.available | 2019-03-06T08:43:31Z |
dc.date.issued | 2019-02-15 |
dc.identifier.citation | Attar, K. [et al.]. Sorption and desorption studies of Pb(II) and Ni(II) from aqueous solutions by a new composite based on alginate and magadiite materials. "Polymers", 15 Febrer 2019, vol. 11, núm. 2, p. 11020340-1-11020340-18. |
dc.identifier.issn | 2073-4360 |
dc.identifier.uri | http://hdl.handle.net/2117/130075 |
dc.description.abstract | A new composite material based on alginate and magadiite/Di-(2-ethylhexyl) phosphoric acid (CAM-D2EHPA) was successfully prepared by previous impregnation of layered magadiite with D2EHPA extractant, and then immobilized into the alginate matrix. Air dried beads of CAM-D2EHPA were characterized by FTIR and SEM–EDX techniques. The sorbent was used for the separation of lead and nickel from nitrate solutions; the main parameters of sorption such as contact time, pH of the solution, and initial metal concentration were studied. The beads recovered 94% of Pb(II) and 65% of Ni(II) at pH 4 from dilute solutions containing 10 mg L-1 of metal (sorbent dosage, S.D. 1 g L-1). The equilibrium data gave a better fit using the Langmuir model, and kinetic profiles were fitted using a pseudo-second order rate equation. The maximum sorption capacities obtained (at pH 4) were 197 mg g-1 and 44 mg g-1 for lead and nickel, respectively. The regeneration of the sorbent was efficiently carried out with a dilute solution of HNO3 (0.5 M). The composite material was reused in 10 sorption–elution cycles with no significant differences on sorption uptake. A study with synthetic effluents containing an equimolar concentration of both metals indicated a better selectivity towards lead ions |
dc.language.iso | eng |
dc.publisher | Multidisciplinary Digital Publishing Institute (MDPI) |
dc.rights | Attribution-NonCommercial-NoDerivs 3.0 Spain |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/es/ |
dc.subject | Àrees temàtiques de la UPC::Enginyeria química |
dc.subject.lcsh | Liquids |
dc.subject.other | Alginate |
dc.subject.other | heavy metal |
dc.subject.other | H-magadiite |
dc.subject.other | organophosphorus extractants |
dc.subject.other | sorption |
dc.subject.other | desorption |
dc.title | Sorption and desorption studies of Pb(II) and Ni(II) from aqueous solutions by a new composite based on alginate and magadiite materials |
dc.type | Article |
dc.subject.lemac | Líquids -- Absorció i adsorció |
dc.contributor.group | Universitat Politècnica de Catalunya. R2EM - Resource Recovery and Environmental Management |
dc.identifier.doi | 10.3390/polym11020340 |
dc.description.peerreviewed | Peer Reviewed |
dc.relation.publisherversion | https://www.mdpi.com/2073-4360/11/2/340 |
dc.rights.access | Open Access |
local.identifier.drac | 23950596 |
dc.description.version | Postprint (published version) |
local.citation.author | Attar, K.; Demey, H.; Bouazza, D.; Sastre, A. |
local.citation.publicationName | Polymers |
local.citation.volume | 11 |
local.citation.number | 2 |
local.citation.startingPage | 11020340-1 |
local.citation.endingPage | 11020340-18 |
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