SINTESIS MATERIAL HIBRIDA EKSOPOLISAKARIDA SILIKA DARI Spirulina sp SEBAGAI ADSORBEN ION Pb(II) DAN Cd(II) DALAM LARUTAN

WIDYASTUTI, 1327011037 (2015) SINTESIS MATERIAL HIBRIDA EKSOPOLISAKARIDA SILIKA DARI Spirulina sp SEBAGAI ADSORBEN ION Pb(II) DAN Cd(II) DALAM LARUTAN. UNSPECIFIED.

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Abstrak

In this research, it has been carried out adsorption process of Pb(II) and Cd(II) ions toward adsorbent of exopolysaccharide (EPS) modified with matrix silica producing exopolysaccaride silica-hybrid (ESH). The material obtained from synthesis result was characterized by spectrophotometer infrared (IR) to identify functional groups and scanning electron microscope-energy dispersive xray (SEM-EDX) to investigate surface morphology. Determination of metal ion concentration was performed by inductively coupled plasma-atomic emission spectrometry (ICP-AES). Adsorption of Pb(II) and Cd(II) ions with HES is optimum at pH 7 and consentration at 25 ppm with the capasities adsorption of 99.23 and 82.04 %, contact time of 15 min and it tends to follow second orde pseudo kinetic model and Langmuir adsorption isotherm model. Keywords: Exopolysaccharide, adsorption, silica-hybrid exopolysaccharide, Pb(II) and Cd(II) ions Pada penelitian ini, telah dilakukan adsorpsi ion Pb(II) dan Cd(II) terhadap adsorben eksopolisakarida (EPS) yang dimodifikasi dengan matriks silika menghasilkan hibrida eksopolisakarida-silika (HES). Material hasil sintesis dikarakterisasi melalui identifikasi gugus fungsional dengan spektrofotometer inframerah (IR), dan analisis morfologi permukaan dengan scanning electron microscope-energy dispersive x-ray (SEM-EDX). Analisis kadar ion logam ditentukan dengan menggunakan inductively coupled plasma-atomic emission spectrometry (ICP-AES). Adsorpsi ion Pb(II) and Cd(II) oleh HES optimum pada pH 7 dan konsentrasi 25 ppm dengan kapasitas adsorpsi masing-masing rata-rata sebesar 99,23 dan 82,04 %, waktu interaksi 15 menit serta cenderung mengikuti model kinetika pseudo orde dua dan model isoterm adsorpsi Langmuir. Kata Kunci: Eksopolisakarida, adsorpsi, hibrida-silika eksopolisakarida, ion logam Pb(II), dan Cd(II)

Tipe Karya Ilmiah: Skripsi
Subyek: Q Science (General) > QD Chemistry
Program Studi: Fakultas MIPA > Prodi Kimia
Depositing User: 6811548 . Digilib
Date Deposited: 14 Jul 2015 03:58
Last Modified: 03 Nov 2015 08:04
URI: http://digilib.unila.ac.id/id/eprint/11179

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