CD Skripsi

Potensi Lempung Alam Desa Maredan, Provinsi Riau Untuk Adsorpsi Methylene Blue: Optimasi Kecepatan Pengadukan Dan Suhu Adsorpsi

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SUMMARY
I vii
Raw clay is one of the low-cost and earliest adsorbent employed in removing organic and inorganic contaminants in water. It is because of its large spesific surface area, the high thermal stability, and the high cation exchange capacity. The purpose of this research were to determine the methylene blue adsorption parameters for stiring speed and temperature using Maredan raw clay and evaluate its reusability. The method used in this research ware methylene blue adsorption in stirring speed and temperature optimization. The stiring speed and temperature used in this research were 100, 150, 200, 250 rpm and 25, 35, 45, 55oC respectively. The regeneration capacity of Maredan raw clay using 0,3 M HNO3 aqueous solution for three cycles. The measurement of the solution concentration was carried out spectrospectically using UV-Vis spectrophotometry at 664 nm wavelength. The optimum removal efficiency of methylene blue at 150 rpm and 35oC which showed adsorption efficiency 98.16%. The characterization of Maredan raw clay wascarried out before, after adsorption, and after regeneration using Fourrier TransformInfra-Red (FTIR). Based on the analysis result of Maredan raw clay using FTIR, itwas found that in Maredan rawclay before adsorption, there were some groups suchas Si-O-Si, Si-O-Al, Al-O and –OH while in Maredan clay after adsorption and after regeneration, there were some groups such as Si-O-Si, Si-O-Al, Al-O, -OH, C=N, C=C and C-N. The regeneration capacity of Maredan raw clay in methylene blue adsorption during three cycles were 96.71; 90.90; and 55,04% respectively. Based on the results of thermodynamic analysis by the values of ΔG, ΔH and ΔS and it was found that methylene blue adsorption using Maredan raw clay was spontaneous (ΔG negative), occurred physically (ΔG + 8-10 kJ/mol), endothermic(ΔH was positive), and there was a decrease in particle irregularity at high temperatures (ΔS was positive).

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Ketersediaan

Informasi Detail

Judul Seri

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No. Panggil

1803113630

Penerbit

Pekanbartu : Universitas Riau - FMIPA - Kimia., 2023

Deskripsi Fisik

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Bahasa

ISBN/ISSN

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Klasifikasi

1803113630

Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

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Subjek

KIMIA

Info Detail Spesifik

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Pernyataan Tanggungjawab

puja

Versi lain/terkait

Lampiran Berkas

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