Studi Kinetika dan Termodinamika Adsorpsi Ion Klorida Pada Karbon Aktif dan Resin Penukar Ion

Awardha, Batari (2024) Studi Kinetika dan Termodinamika Adsorpsi Ion Klorida Pada Karbon Aktif dan Resin Penukar Ion. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Penelitian ini bertujuan untuk mengetahui kinetika dan termodinamika proses adsorpsi ion klorida pada dua material adsorben yakni karbon aktif dan resin penukar ion. Penelitian dilakukan dengan melakukan variasi massa adsorben, konsentrasi awal ion klorida, dan suhu. Data eksperimental ini kemudian dianalisis menggunakan model kinetika dan persamaan termodinamika untuk mengidentifikasi mekanisme adsorpsi yang terlibat. Hasil penelitian menunjukkan bahwa kapasitas adsorpsi ion klorida pada 5 gram adsorben karbon aktif, resin penukar ion, dan komposit 1:1 yaitu 3,87%, 13,5%, dan 8,13%. Kinetika adsorpsi ion klorida pada karbon aktif, resin penukar ion, dan kompositnya mengikuti model orde dua-semu dengan konstanta laju orde dua-semu 2,31; 1,77; dan 18,03 g.mg-1.min-1. Analisis termodinamika menunjukkan bahwa proses adsorpsi dengan karbon aktif, resin penukar ion dan komposit bersifat eksotermis dengan nilai entalpi (ΔH) bernilai negatif masing-masing sebesar -13,17; -42,44; dan -41,41 kJ/mol ,lalu terjadi peningkatan ketidakaturan permukaan dengan nilai perubahan entropi (ΔS) bernilai positif dan terjadi secara spontan dengan nilai perubahan energi bebas Gibss (ΔG) bernilai negatif. Adsorpsi dengan menggunakan karbon aktif mengikuti mekanisme isoterm adsorpsi Freundlich bersifat fisisorpsi sedangkan resin penukar ion mengikuti mekanisme isoterm adsorpsi Langmuir bersifat kemisorpsi.
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This study aims to determine the kinetics and thermodynamics of chloride ion adsorption process on two adsorbent materials, namely activated carbon and ion exchange resin. The research was conducted by varying the adsorbent mass, initial chloride ion concentration, and temperature. The experimental data was then analyzed using kinetic models and thermodynamic equations to identify the adsorption mechanism involved. The results showed that the adsorption capacity of chloride ions on 5 grams of activated carbon adsorbent, ion exchange resin, and 1:1 composite were 3.87%, 13.5%, and 8.13%. The adsorption kinetics of chloride ions on activated carbon, ion exchange resin, and their composites follow the pseudo-second-order model with pseudo-second-order rate constants of 2.31; 1.77; and 18.03 g.mg-1.min-1. Thermodynamic analysis showed that the adsorption process with activated carbon, ion exchange resin and composite was exothermic with negative enthalpy (ΔH) values of -13.17; -42.44; and -41.41 kJ/mol, respectively, then increased surface irregularity with positive entropy change (ΔS) values and occurred spontaneously with negative Gibss free energy change (ΔG) values. Adsorption using activated carbon follows the Freundlich adsorption isotherm mechanism of physisorption nature while ion exchange resin follows the Langmuir adsorption isotherm mechanism of chemisorption nature.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Adsorpsi Ion Klorida, Isoterm, Kinetika, Termodinamika, Karbon Aktif, Resin Penukar Ion Activated Carbon, Chloride Adsorption, Ion Exchange Resins, Ishoterm, Kinetic, Thermodynamic.
Subjects:	Q Science > QD Chemistry > QD502 Chemical kinetics
Divisions:	Faculty of Science and Data Analytics (SCIENTICS) > Chemistry > 47201-(S1) Undergraduate Thesis
Depositing User:	Batari Awardha
Date Deposited:	15 Feb 2024 04:48
Last Modified:	15 Feb 2024 04:48
URI:	http://repository.its.ac.id/id/eprint/107159

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