Biosorption Study Of Copper And Zinc By Particles Produced From Silk Sericin - Alginate Blend: Evaluation Of Blend Proportion And Thermal Cross-linking Process In Particles Production

dc.creatorda Silva
dc.creatorThiago Lopes; da Silva Junior
dc.creatorAbsolon Carvalho; Adeodato Vieira
dc.creatorMelissa Gurgel; Gimenes
dc.creatorMarcelino Luis; Carlos da Silva
dc.creatorMeuris Gurgel
dc.date2016
dc.datenov
dc.date2017-11-13T13:12:25Z
dc.date2017-11-13T13:12:25Z
dc.date.accessioned2018-03-29T05:50:38Z
dc.date.available2018-03-29T05:50:38Z
dc.identifierJournal Of Cleaner Production. Elsevier Sci Ltd, v. 137, p. 1470 - 1478, 2016.
dc.identifier0959-6526
dc.identifier1879-1786
dc.identifierWOS:000391079300132
dc.identifier10.1016/j.jclepro.2015.05.067
dc.identifierhttp://www-sciencedirect-com.ez88.periodicos.capes.gov.br/science/article/pii/S0959652615006228?via%3Dihub
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/326872
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1363897
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionSericin is a protein present in the cocoon of silkworm silk (Bombyx mori), usually discarded in the effluent from the spinning process, and alginate is a linear natural polysaccharide, extracted mainly from brown algae. Both biomaterials have been attracting attention due to their properties. Sericin isolated present weak structural properties, but its strongly polar side groups enable easy cross-linking, polymerization and blending. The use of blends provides an improvement in the physical characteristics of the materials produced with the protein, and the use of alginate has an advantage because it has affinity for a variety of cations. The aim of this paper is to evaluate the particles produced from the blend between sericin and alginate and its properties. The gelation technique, dripping blends in aqueous and alcoholic solutions of CaCl2, was applied to produce particles with 1%, 2% and 3% w/V of alginate in sericin solution (2.5% w/V). Posteriorly, the thermal cross-linking process at 40, 100, 125 and 150 degrees C was performed in sericinalginate particles and the biosorption processes of these particles for zinc and copper metals were investigated. The evaluation of the data was carried out through the measurement of water solubility, Scanning Electron Microscopy (SEM) images, Fourier Transform Infrared Spectrometry (STIR) spectra and adsorption capacity. Water solubility of particles decreased when they were produced in alcoholic solution, which is probably related to the formation of beta-sheet structure confirmed by FTIT analyses. Also, it was observed that adsorption capacity increased when the particles were produced in alcohol solution. The thermal cross-linking process increased the adsorption capacity until 100 degrees C, with values around 75% and 65% of reduction of Cu2+ and Zn2+, respectively. From temperature 100 degrees C all particles got higher degree of browning with an increase of solubility and decrease of adsorption capacity by particles because of the degradation of protein/polysaccharide. (C) 2015 Elsevier Ltd. All rights reserved.
dc.description137
dc.description1470
dc.description1478
dc.descriptionCNPq
dc.descriptionFAPESP
dc.descriptionFundacao Araucaria
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.languageEnglish
dc.publisherElsevier Sci Ltd
dc.publisherOxford
dc.relationJournal of Cleaner Production
dc.rightsfechado
dc.sourceWOS
dc.subjectSericin Particles
dc.subjectAlginate Particles
dc.subjectBiosorption
dc.subjectMetal Affinity
dc.subjectCross-linking
dc.subjectThermal Cross-linking
dc.titleBiosorption Study Of Copper And Zinc By Particles Produced From Silk Sericin - Alginate Blend: Evaluation Of Blend Proportion And Thermal Cross-linking Process In Particles Production
dc.typeArtículos de revistas


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