MODIFIKASI TANIN DARI BIOMASSA DAUN AKASIA (Acacia mangium Wild) DENGAN CARA POLIMERISASI SEBAGAI SORBEN UNTUK LOGAM Pb (II)

• Main Author: Nurkaromah, Ana
• Format: Theses
• Language: Indonesia
• Subjects: Teknik saniter dan perkotaan; teknik perlindungan lingkungan
• Online Access: https://digilib.itb.ac.id/gdl/view/32062
• Institution: Institut Teknologi Bandung

In this research, the modification of tannin from the Acacia leaves biomass was utilized as an adsorbent material for the removal of Pb (II) from artificially contaminated solution. Biosorbent used in this study consists of three types: biosorbent from biomass without treatment (BTP), biosorbent treatment polymerization from the biomass (BDP), and biosorbent treatment polymerization from the tannin extract from biomass (BEP). The Fourier Transform Infrared Spectroscopy (FTIR), X-ray Diffractometer (XRD) and Scanning Electron Microscopy (SEM), moisture content, ash content, volatile level, and carbon content was conducted to determine the physical and chemical characteristics of biosorbent. Batch experiments was used to predict the adsorption capacity of lead ion. Different parameters affecting the adsorption process were tested including initial adsorbent particle pore size, adsorbent doses, contact time and adsorbate dose. The adsorption process and kinetics analysis for removal Pb (II) was tested with Langmuir and Freundlich model. Optimum conditions on the use of BTP was dose of 2 g / 50 mL, with a pore size of 100 mesh and at optimum contact time of 45 minutes, with the initial concentration of Pb (II) 50 ppm with removal efficiency of Pb (II) was reach 85,03%. Optimum conditions on the use of BDP was dose of 2,5 g / 50 mL, at optimum contact time of 75 minutes, with the initial concentration of Pb (II) 50 ppm with removal efficiency of Pb (II) was reach 79,71%. Optimum conditions on the use of BEP was dose of 2 g / 50 mL, at optimum contact time of 75 minutes, with the initial concentration of Pb (II) 75 ppm with removal efficiency of Pb (II) was reach 70,81%. BTP's performance is the best than BDP and BEP, otherwise the modification has success to change biosorbent into matriks form. Study of isotherms adsorption obtained for the third biosorben follow Freundlich isotherm mechanism and for kinetic study followed a second order equation.