he results also show that some portion of the metal ions sorbed by immobilized Ganoderma lucidum biomass was readily released to solution with a decrease in pH. At equilibrium, the maximum total Ni(II) uptake of immobilized
Ganoderma lucidum biomass was 504.92 mg/g and was reached at pHi 5 and initial Ni(II) concentration of 800mg/L. Due to presence of larger number of competing ions in wastewater sorption equilibrium was reached in short time. Sulphuric acid (0.1 M) was found to be the better desorbing agent in comparison to other reagents