| Autor: |
Meili L; Separation Systems and Process Optimization Laboratory, Center of Technology, Federal University of Alagoas, Maceió 57072-970, Brazil E-mail: lucas.meili@ctec.ufal.br., da Silva TS; Separation Systems and Process Optimization Laboratory, Center of Technology, Federal University of Alagoas, Maceió 57072-970, Brazil E-mail: lucas.meili@ctec.ufal.br., Henrique DC; Separation Systems and Process Optimization Laboratory, Center of Technology, Federal University of Alagoas, Maceió 57072-970, Brazil E-mail: lucas.meili@ctec.ufal.br., Soletti JI; Separation Systems and Process Optimization Laboratory, Center of Technology, Federal University of Alagoas, Maceió 57072-970, Brazil E-mail: lucas.meili@ctec.ufal.br., de Carvalho SH; Separation Systems and Process Optimization Laboratory, Center of Technology, Federal University of Alagoas, Maceió 57072-970, Brazil E-mail: lucas.meili@ctec.ufal.br., Fonseca EJ; Quantic and Non Linear Optic Laboratory, Department of Physics, Center of Exact and Natural Sciences, Federal University of Alagoas, Av. Lourival de Melo Mota, s/n, Tabuleiro de Martins, Maceió, AL 57072-970, Brazil., de Almeida AR; Chemical Engineering, Federal University of Pampa, Rua Maria Anunciação Gomes de Godoy, 1650, Bagé, RS 96413-170, Brazil., Dotto GL; Environmental Processes Laboratory (LAPAM), Chemical Engineering Department, Federal University of Santa Maria, Santa Maria 97105-900, Brazil. |
| Abstrakt: |
In this work, the potential of ouricuri (Syagrus coronata) fiber as a novel biosorbent to remove methylene blue (MB) from aqueous solutions was investigated. The fiber was prepared and characterized according to the fundamental features for adsorption. A 2 3 experimental design was used to evaluate the effects of adsorbent dosage (M), fiber diameter (D) and agitation (A) on the adsorption capacity. In the more adequate conditions, kinetic and equilibrium studies were performed. The experimental design results showed that M = 10 g L -1 ), D = 0.595 mm and A = 200 rpm were the more adequate conditions for MB adsorption. Based on the kinetic study, it was found that the adsorption process was fast, being the equilibrium was attained at about 5 min, with 90% of color removal. The isotherm was properly represented by the Sips model, and the maximum adsorption capacity was 31.7 mg g -1 . In brief, it was demonstrated that ouricuri fiber is an alternative biosorbent to remove MB from aqueous media, taking into account the process efficiency and economic viewpoint. |
