Removal of Mercury from Aqueous Solutions by Adsorption to Rice Husks

摘要: The adsorption of mercury ions from aqueous solutions on rice husk has been investigated as a function appropriate electrolyte, contact time, concentrations adsorbent and adsorbate, temperature. radiotracer technique was used to determine the distribution mercury. Maximum observed at 0.01 mol·dm−3 acid (HNO3, HCl, H2SO4, HClO4) using 1.0 g for 1.30 × 10−3 concentration in 5 minutes equilibration time. Studies show that decreases with an increase all acids. data follow Freundlich isotherm over range 1.3 104 2.6 concentration. characteristic constants, i.e., 1/n = 0.89 ± 0.05 andA 208 2.1 m·mol·g−1, have computed sorption system. uptake increases rise Thermodynamic parameters, ΔG° ΔS° ΔH°, also calculated process fo...