Pembuatan Granul Zeolit Terfosfatasi- Kitosan dan Kajian Adsorpsi Kromium(VI) Menggunakan Adsorben Berbasis Zeolit dan Bentonit

Alfiana Widiyanti, Firdaus (2020) Pembuatan Granul Zeolit Terfosfatasi- Kitosan dan Kajian Adsorpsi Kromium(VI) Menggunakan Adsorben Berbasis Zeolit dan Bentonit. Sarjana thesis, Universitas Brawijaya.

Abstract

Penelitian ini bertujuan untuk mengetahui pembuatan granul zeolit terfosfatasi-kitosan dengan metode manual dan mengkaji pengaruh pH, waktu kontak, serta konsentrasi awal adsorbat terhadap adsorpsi kromium(VI) menggunakan adsorben berbasis zeolit dan bentonit. Pada penelitian ini juga dilakukan kajian desorpsi kromium(VI). Pembuatan adsorben dilakukan dalam beberapa tahapan utama antara lain aktivasi zeolit alam, fosfatasi zeolit untuk menghasilkan adsorben Si/P dengan rasio 1/6, dan pembuatan granul zeolit terfosfatasikitosan. Adsorben dikarakterisasi menggunakan spektrofotometer FTIR. Kajian adsorpsi kromium(VI) pada adsorben berbasis zeolit dan bentonit dilakukan dengan metode telaah jurnal. Adsorben yang dikaji kemampuan adsorpsinya terhadap kromium(VI) adalah clinoptilolite zeolite (CZ), organobentonite (OB), zeolite prepared from raw fly ash (ZFA), magnetic natural zeolite–pollypirole (MZ-PPy), dan imprinted-4-VP-co-MMA natural zeolite (IIP-ANZ). Spektra IR mengkonfirmasi keberhasilan fosfatasi zeolit. Munculnya pita serapan baru pada 652,66 cm-1 (vibrasi Si-O-P) serta pergeseran pita serapan pada 1219,69 cm-1 menjadi 1194,62 cm-1 mengindikasikan adanya substitusi SiO4 oleh ion fosfat pada kerangka zeolit. Adsorpsi kromium(VI) dipengaruhi oleh pH, waktu kontak, dan konsentrasi adsorbat. pH optimum adsorpsi terjadi pada pH 2 untuk ZC dan ZFA dan pada pH 3 untuk OB. Waktu kontak optimum untuk CZ, OB, dan GASP masing-masing terjadi pada 30, 60, dan 120 menit. Berdasarkan data kajian pengaruh konsentrasi awal, harga qm untuk GASP dan MZPPy masing-masing sebesar 25,5102 mg/g dan 303,0303 mg/g.

English Abstract

This study aims to study the production of phosphated zeolite-chitosan granules by manual method, to investigate the effect of pH, contact time, and initial concentration of adsorbate on the adsorption of chromium(VI) using zeolite and bentonite-based adsorbents. In this study, chromium(VI) desorption studies were also conducted. The making of the adsorbent was carried out in several main stages including activation of natural zeolite, phosphatation of zeolite to produce Si/P adsorbents with a ratio of 1/6, and the production of phosphated zeolite-chitosan granules adsorbent. The adsorbent was characterized using FT-IR spectrophotometers. The chromium(VI) adsorption study of zeolite and bentonite-based adsorbents was carried out by journal review. The adsorbents which have been examined for their adsorption capacity for chromium(VI) are clinoptilolite zeolite (CZ), organobentonite (OB), zeolite prepared from raw fly ash (ZFA), magnetic natural zeolite–Pollypirole (MZ-PPy), and granules alumino silico phosphate (GASP), imprinted-4-VP-co-MMA natural zeolite (IIP-ANZ). IR spectra confirm the phosphatation of zeolite. A new absorption band at 652.66 cm-1 (vibration of Si-O-P) and a shifted peak from 1219.69 cm-1 to 1194.62 cm-1 are presumably due to the substitution of SiO4 by phosphate ion in the zeolite framework. Chromium(VI) adsorption was influenced by pH, contact time, and adsorbate concentration. The optimum pH of adsorption occurs at pH 2 for ZC and ZFA and at pH 3 for OB. The optimum contact times for CZ, OB, and GASP occur at 30, 60, and 120 minutes, respectively. Based on the study on the effect of initial concentration, the values of qm for GASP and MZ-PPy were 25.5102 mg/g and 303.0303 mg/g, respectively

Other obstract

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Item Type:	Thesis (Sarjana)
Identification Number:	0520090016
Uncontrolled Keywords:	adsorpsi, kromium(VI), granul, zeolit, dan bentonit.
Subjects:	500 Natural sciences and mathematics > 549 Mineralogy > 549.6 Sillicates > 549.68 Tectosilicates
Divisions:	Fakultas Matematika dan Ilmu Pengetahuan Alam > Kimia
Depositing User:	ismanto
Date Deposited:	30 Jan 2021 07:32
Last Modified:	07 Oct 2024 03:29
URI:	http://repository.ub.ac.id/id/eprint/182048

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