Adsorption ofPb(II) Ions Using Ca-alginate

• Main Author: Fitri Br Saragih, Marlina
• Format: Final Project
• Language: Indonesia
• Subjects: Kimia
• Online Access: https://digilib.itb.ac.id/gdl/view/38592
• Institution: Institut Teknologi Bandung

Pb(ll) ion is one of the hem.) metal ions that is widely used in electronic indu stries. Waste\-\.ater that contain Pb( II) ion has potential!) contaminate the environment. especial!) the aquatic ecos)stem and if it is enters human bod). it can be threaten human health. In this stud). calcium alginate granules ""ere S)nthesized as adsorbent ofPb( ll ) ions. Adsorbent \-\.as characterized b) using Fourier Transform Infrared Spectroscop) (FTIR). X-Ray Diffraction (XRD) and Scanning Electron Microscop}-Energ) Disper i"e Spectroscopy (SEM-EDS) instrument. Adsorption of Pb( II) ions has been studied \\ ith several parameters. such as pH. adsorbent mass. contact time. and initial concentration of Pb(ll) ion. The result shove. d that the ma:-.imum adsorption capacit} of adsorpt i on occurred at pH 4. the adsorbent mass '"as 0.05 g. contact time ,.,.aI hour. the optimum initial concentration of adsorption v.as 400 mg.L•'. Stud} of isotherm adsorption. thennod)namic. and adsorption kinetics \\aS carried out during optimum adsorption condition. The experimental result showed the adsorption of Pb (II) ions by Ca-alginate adc;orbent foiiO\\ing the Langmuir adsorpt i on isotherm model and pseudo second order kinetics model. In additi on. thadsorption process is exothermic with va lue of 611 = -I 0.10 U.mol•' and t'lS - -0.0594 U.moi"1 .K"1 •