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MODIFIKASI BENTONIT MENJADI NA-BENTONIT SEBAGAI ADSORPTION AGENT PENGOLAHAN SURFAKTAN ANIONIK NATRIUM LAURIL SULFAT

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Penilaian

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Bentonite has been modified into Na-bentonite by exchanging cations at the distance between the montmorillonite layers with Na+ cations from saturated sodium chloride solution. The modified Na-bentonite was then used as an adsorption agent for the anionic surfactant sodium lauryl sulfate. Characterization of Na-Bentonite and bentonite was using FT-IR, SEM-EDX and XRD. The results of FT-IR characterization showed that in bentonite and Na-bentonite there was a shift in wave number from 3396 cm-1 to 3380 cm-1 caused by the vibration of the O-H bond which decreased the bond frequency. The results of SEM characterization of Na-bentonite showed higher homogeneity due to cation exchange. EDX analysis showed that the highest oxide was obtained by SiO2 54.03% and Al2O3 17.24%. The number of Na+ cations in bentonite before this modification was detected as much as 0.07 and in Na-bentonite the number of Na+ cations increased to 0.81. The results of XRD analysis showed that Na-bentonite had an increasing distance between planes after being applied as an adsorbent of sodium lauryl sulfate and the particle size of Na-bentonite gets smaller with increasing temperature adsorption. The optimum time variation was found at 40 minutes with an adsorption percent of 82.12% and adsorption capacity is 2.05 mg/g. In bentonite before modification, the adsorption percentage was 33.7% with a adsorption capacity is 0.842 mg/g. The data of sodium lauryl sulfate adsorption kinetics is more in line with the pseudo second order model. The weight variation of Na-bentonite adsorbent showed optimum results at a weight of 0.04 grams with a percent effectiveness of 82,49%. The highest adsorption capacity of the adsorbent Na-bentonite was 10.09 mg/g and bentonite before modification reached an adsorption capacity of 7.58 mg/g. The isotherm parameter that corresponds to the adsorption of sodium lauryl sulfate is the Freundlich isotherm parameter. The change in enthalpy (∆H) produces a negative value, the change in entropy and Gibbs free energy indicates the spontaneity of the adsorption process.

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Availability

Inventory Code	Barcode	Call Number	Location	Status
2207002366	T75027	T750272022	Central Library (Referens)	Available but not for loan - Not for Loan

Detail Information

Series Title

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Call Number

T750272022

Publisher

Inderalaya : Jurusan Kimia, Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Sriwijaya., 2022

Collation

xviii, 44 hlm.; ilus.; 29 cm

Language

Indonesia

ISBN/ISSN

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Classification

547.607

Content Type

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Media Type

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Carrier Type

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Edition

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Subject(s)

Jurusan Kimia
Senyawa Aromatik

Specific Detail Info

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Statement of Responsibility

SEPTA

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