Bio-adsorption of copper (II) from synthetic wastewater using Vaucheria sp. Dead biomass

Abstract

The ability of the yellow-green alga Vaucheria sp. to remove Copper (II) from synthetic wastewater through the adsorption process was investigated in this communication. The pH of the solution, the adsorbent dose, the initial concentration of Cu (II) ions, the contact period, and the temperature are all factors that influenced Cu (II) sorption. The adsorption capacity at 5 pH, 80 minutes of contact time, and 318 K was calculated using the Langmuir adsorption model. By comparing the coefficient correlation (R2) values, both the Langmuir and Freundlich equations were found to fit the equilibrium data. The parameters (ΔGo, ΔHo, and ΔSo) were examined during thermodynamic tests at three distinct temperatures: 298, 308, and 318 K, suggesting that the process was sustained, spontaneous, and endothermic. Pseudo-second-order kinetic models accurately described adsorption kinetics when compared to pseudo-first-order kinetic models. Finally, the current research revealed that the bio-adsorption technique utilizing Vaucheria sp. alga could be an inexpensive and effective way to adsorb and remove Cu (II) metal ions from synthetic waste waters.