With the use of elutants it is necessary to evaluate both effi-
ciency of desorption and preservation of biosorption capacity
of the biomass (Chu et al., 1997). The adsorbed metals onWith the use of elutants it is necessary to evaluate both effi-
ciency of desorption and preservation of biosorption capacity
of the biomass (Chu et al., 1997). The adsorbed metals onto recover metal ions in the form of concentrated solution
and to regenerate the biosorbent that can be used in another
biosorption cycle.Desorption of Cd(II) ions byU. lactuca biomass was studied
by using 1 M of HCl, H2SO4 and HNO3 as well as distilled
water. The results of desorption are shown in Fig. 9, which