Mango seed husks as biosorbents for treatment of dye contaminated wastewaters.
França A. S., Oliveira L. S. de, Santos P. I. A., Salum S. de B., Saldanha S. A.
Author Affiliation: EEUFMG, Belo Horizonte, Brazil.
Central theme, technology for all: sharing the knowledge for development. Proceedings of the International Conference of Agricultural Engineering, XXXVII Brazilian Congress of Agricultural Engineering, International Livestock Environment Symposium - ILES : unpaginated
Abstract : The objective of this study was to evaluate the potential of mango seed husks as biosorbents for the removal of basic dyes from synthetic aqueous media. Batch adsorption tests were performed at 25°C, with methylene blue (MB) as sorbate and the effects of particle size, contact time, adsorbent dosage and pH were investigated. Adsorption results indicated that no thermal treatment was necessary in order to improve adsorption capacity and that this material can be successfully employed as a biosorbent. The experimental adsorption equilibrium data were fitted to Langmuir and Freundlich adsorption isotherm models, with Freundlich providing the best fit. The experimental data obtained in the present study indicated that this type of waste material is an excellent candidate for use as biosorbents for the removal of cationic dyes, presenting adsorption capacity similar to that of other untreated residues.