Adsorption Kinetics Study of Cu(II) and Pb(II) Using Biosorbent from Nephelium Fruit Peel Extract Polymers

Recovery of Cu(II) and Pb(II) which are mostly contained in industrial liquid waste, both large and home industries, have been carried out, one of them is by the adsorption process. This research was carried out kinetics study of adsorption of Cu(II) and Pb(II) in liquid waste to determine the effectiveness of biosorbents from Nephelium fruit peel extracts against liquid wastes containing Cu(II) and Pb(II). Determination of Cu(II) and Pb(II) adsorption kinetics by using biosorbent from rambutan fruit peel extract was done through several kinetic models namely the Langmuir-Hinshelwood, Santosa, Lagergreen and Ho kinetics models. The Cu(II) and Pb(II) adsorption kinetics all follow the Ho kinetics model, which is the  kinetics mechanism of pseudo-second order.