Avaliação da sorção de Cu (II) e Hg (II) pela Sargassum sp modificado com epicloridrina

• Autor(a) principal: Felix, Valter de Souza
• Data de Publicação: 2011
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Biblioteca Digital de Teses e Dissertações da UERJ
• Texto Completo: http://www.bdtd.uerj.br/handle/1/15671
• topic: Biosorption; Copper; Mercury; Sargassum sp.; Modification; Epichlorohydrin; Biossorção; Cobre; Mercúrio; Sargassum sp.; Modificação; Epicloridrina; CNPQ::CIENCIAS EXATAS E DA TERRA::QUIMICA::QUIMICA ORGANICA::POLIMEROS E COLOIDES

A growing concern of increasing the man with the contamination of aquatic environments since the livelihoods of those dependent on the welfare of all. While growing concern has increased the amount of research in search of alternative treatment technologies and remediation of aqueous waste streams contaminated by various substances including heavy metals. In recent decades, has increased the number of reports assessing the sorption capacity and the feasibility of using low-cost biosorbent uptake of metal ions and these materials are the biomass of brown algae. Among the various genres on the planet Brazilian territory is rich in macro algae of the genus Sargassum. Although the composition of these biomasses vary the main constituent of these images is alginic acid and alkaline salts in the form of a linear copolymer, homopolymeric blocks of (1-4)-linked β-D mannuronic acid (M), and its C-5 epimer α-L-guluronic, (G) residues, respectively, covalently linked together in different sequences or blocks. The monomers can appear in homopolymeric block of consecutive G-residues (G-blocks), consecutive M-residues (M-blocks), alternating M and G (MG blocks) or randomly organized blocks. The purpose of this dissertation is the modification of existing biomass copolymer with epichlorohydrin, evaluate and compare the uptake of Cu (II) and Hg (II) by biomass of seaweed Sargassum sp. with the unmodified biomass and results published in literature