Síntese, modificação e caracterização de resinas poliméricas e sua avaliação na remoção de amônia da água

Detalhes bibliográficos
Ano de defesa: 2018
Autor(a) principal: Deus, Laylana Cornélio de.
Orientador(a): Não Informado pela instituição
Banca de defesa: Não Informado pela instituição
Tipo de documento: Dissertação
Tipo de acesso: Acesso aberto
Idioma: por
Instituição de defesa: Universidade Federal do Rio de Janeiro
Brasil
Instituto Alberto Luiz Coimbra de Pós-Graduação e Pesquisa de Engenharia
Programa de Pós-Graduação em Engenharia Metalúrgica e de Materiais
UFRJ
Programa de Pós-Graduação: Não Informado pela instituição
Departamento: Não Informado pela instituição
País: Não Informado pela instituição
Palavras-chave em Português:
Link de acesso: http://hdl.handle.net/11422/12868
Resumo: This work developed the modification and characterization of a new porous crosslinked polymer resin (poly (glycidyl methacrylate-co-divinylbenzene)) in order to evaluate its efficiency of removal of ammonia from water by adsorption comparing it with resins already known and used as : poly (styrene-co-divinylbenzene) (STY-DVB) and divivilbenzene (DVB). The objective of this dissertation is to sulfonate the GMADVB resin so that it is efficient in the adsorption of ammonia in the water in order to be a cheaper alternative (when compared to STY-DVB and DVB) for the polishing of aqueous solutions containing low concentrations of ammonia, for the technical specification Feema, NT 202, R-10, 1986. The three previously synthesized polymer resins were modified via the sulfonation reaction using variable reaction times. The resins that showed integrity after the sulphonation process and greater exchange capacity were: STY-DVB1 (exchange capacity Q = 3.35 mmol / g), DVBS2 (exchange capacity Q = 2.70 mmol / g) and GMA -DVBS2 (exchange capacity Q = 2.75 mmol / g). Such resins were characterized, which proved their chemical modification, and properties as porosity. Then, their capacity to adsorb ammonia in the batch regime in relation to the mass variation (0.05g, 0.1g, 0.3g, 0.7g and 1g) and the influence on the time variation (5min, 10min, 15min, 30min and 60min). It was concluded after the tests that the GMA-DVBS2 resin is efficient in the adsorption of ammonia from the water, for the proposed purposes, possessing characteristic isotherms of an adsorptive material with macropores.