Emprego da casca de soja como adsorvente na remoção de corantes reativos têxteis

Detalhes bibliográficos
Ano de defesa: 2013
Autor(a) principal: Honorio, Jacqueline Ferandin lattes
Orientador(a): Veit, Marcia Teresinha lattes
Banca de defesa: Campos, Elvio Antonio de lattes
Tipo de documento: Dissertação
Tipo de acesso: Acesso aberto
Idioma: por
Instituição de defesa: Universidade Estadual do Oeste do Parana
Toledo
Programa de Pós-Graduação: Programa de Mestrado em Engenharia Química
Departamento: Centro de Engenharias e Ciências Exatas
País: BR
Palavras-chave em Português:
Palavras-chave em Inglês:
Dye
Área do conhecimento CNPq:
Link de acesso: http://tede.unioeste.br:8080/tede/handle/tede/1832
Resumo: The textile industry is known for high use of chemicals such as dyes, and generating large volumes of wastewater that contaminates water, a fact that has encouraged the research and improvement of treatment techniques. This study aimed to employ in natura soybean hulls in the removal of reactive dyes Crimson Sidercron HEXL (RCS-HEXL) and Blue BF-5G (RABF-5G). The point of zero charge (PZC) of soybean hulls was 6.76. The kinetics of the dye RCS-HEXL performed under the experimental conditions C0= 350 mg L-1, Dp= 0.215 mm, dosage= 8 g L-1, pH 2, temperature 30 °C was reached experimental qeq 38.039 mg g-1 in a time of 10 hours. In the kinetics of dye RABF-5G one experimental qeq of 57.473 mg g-1 was obtained under the conditions C0= 400 mg L-1, Dp= 0.725 mm, dosage= 6 g L-1, pH 2, temperature 30 °C 24 hours. The model of the pseudo-second order kinetics represented best of both dyes, showing R2= 0.989. The Langmuir isotherm model for 30 oC showed the maximum adsorption capacity of 44.356 mg g-1 and 72.427 mg g-1 for dyes RCS-HEXL and RABF-5G, respectively. Soybean hulls being a low-cost agro-industrial by-product proves to be a potential adsorbent for the removal of textile dyes investigated.