… The lowest biosorption was observed (61.4%) for Pb2+ ions at pH 2.0 while the highest one
… the adsorption process was found to be at 60 minutes. The amount of Pb2+ ions adsorbed …

… The pH of a suspension is one of the most important parameters that affect the adsorption
process [5,6]. The effect of initial pH on Pb2+ ions biosorption capacity of ER is shown in Fig. 1. …

… ion-exchange processes as well as to the adsorption process. During the possible ion exchange
process in the beginning, metal ions … As both metal ions exist as Cd2+ and Pb2+ at low …

… = 0.697) model, which indicates that the Pb (II) ions adsorption process occur due to
chemisorption. The assumption behind the pseudo-second-order model is that the rate-limiting step …

… The competitive adsorption of Zn2+, Cd2+ and Pb2+ metal ions from aqueous and … adsorption
occurred at 495.9 mg/g for Zn2+ ion, 456.7 mg/g for Pb2+ ion and 493.7mg/g for Cd2+ ion …

… These observations suggest that the adsorption process of lead(II) ions is controlled by the
chemical interactions (ion-exchange and / or complexation) between metal ion (Pb2+) and …

… Maximum adsorption was obtained at pH 5 for Pb2+ ion and pH 7 for Ni2+ … However, the
percentage adsorption of metal ions was higher for Pb2+ ion as compared to the Ni2+ ion and …

… for Pb2+ selective adsorption, Ca2+, as a common co-ion with interference on … adsorption
of Pb2+, was chosen as the model interfering ions. Adsorption of Pb2+ and Ca2+ in single ion …

… 99.3 mg/g for Pb2+, while graphene/PBA exhibited the higher adsorption capacity of up to …
124.2 mg/g for Pb2+ at pH of 5. The adsorption isotherms study revealed that the adsorption of …

… The mechanism involved during the adsorption process was explored based on ion … would
retain its protons causing the reduction in the probability of binding between Pb2+ and –COO …