Estudo da Adsorção do níquel em solução aquosa utilizando o talo do cacho da pupunheira (Bactris Gasipae) como biossorvente de baixo custo

Abstract

This work proposed the nickel adsorption study in aqueous solution using the stem of the bunch of peach palm (Bactris Gasipae) as a biosorbent low cost for wastewater treatment. In the biosorption process were assessed the concentration of fixed biomass in both nickel reagents, the analysis of the amount of biomass in proportion versus contact time at rest and under stirring, the particle size effect of the particles and the influence of the biomass on the variation pH of the medium. For the analyzes was used as a reagent nickel nitrate hexahydrate salt and nickel chloride hexahydrate. For the adsorption test of each reagent were prepared five solutions of 100 ml in the respective concentrations 0.01mol / L-1, 0.02 mol / L-1, 0.03 mol / L-1, 0.04 mol / L-1 and 0.05 mol / L-1. We used the UV spectrophotometric technique - VIS for instrumental analysis, and the absorbance measurement made at a wavelength of 400 nm. By the results obtained, there was significant percentages of nickel removal in all studied analysis. The pH of great value was 5.0 and 6.88. Therefore, the use of peach palm stem bunch of adsorbent as nickel ions, present in aqueous solution is an effective alternative in order to obtain significant results in this study by the proposed methods.