UTILIZA O DA MACRóFITA EGERIA DENSA NA BIOSOR O DO CORANTE REATIVO 5G

In this work, Egeria densa biomass has been used as an alternative adsorbent for removal of reactive blue 5G dye from an aqueous solution. Batch kinetic and equilibrium adsorption experiments were carried out using a rotary shaker, under controlled sorption temperature, and constant dye solution pH. Biosorption kinetic results have shown a quickly dye removal in the first minutes, achieving the equilibrium time at 120 min with a 95% dye removal. Kinetic adsorption data were better fitted by the pseudo-second order kinetic model. The equilibrium adsorption data were better represented by the Langmuir isotherm model, showing a maximum adsorption capacity of 29.12 mg g-1 and an adsorption affinity of 0.13 Lg-1. Based on these results, the E. densa is expected to be used as a good biosorbent in treatment systems of dying effluents.