CD Skripsi

Sintesis Arang Aktif Kulit Durian (Durio Zibethinus Murr.) Melalui Kombinasi Aktivasi Kiln Drum - Microwave, Karakterisasi dan Adsorpsi Biru Metilen di dalam Fasa Cair

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Durian peel biomass has been widely studied as a source of activated charcoal because of its cellulose content. This research aims to study the character of activated charcoal obtained from the combination of kiln drum-microwave process under the influence of microwave irradiation time from durian peel biomass (KD) and its adsorption ability to methylene blue dye in liquid phase solution in batches. The synthesis of activated charcoal starts from the carbonization of KD using a kiln drum for 2 hours, thus obtaining durian peel charcoal (AKD). AKD samples were physically activated using 300 W microwave irradiation time variation of 8 minutes (A8KD), 10 minutes (A10KD) and 12 minutes (A12KD). Samples were characterized according to SNI including: water content and ash content. Chemical-physical characterization included: surface morphology and chemical element composition using SEM-EDX and surface basicity with alkalimetric titration. The sample was then applied for methylene blue adsorption, absorbance determination using UV-Vis spectrophotometer. The results showed that the water content decreased with increasing irradiation time while the ash content increased with increasing irradiation time. Analysis of the surface morphology of AKD shows that the pores are still covered by impurities, A10KD produces cleaner pores than AKD and in A10KD pore damage occurs. The pore size increased as the irradiation time increased. Elemental composition analysis showed that carbon (C) increased after activation, but decreased in A10KD. Surface basicity before and after activation did not change. Adsorption tests on methylene blue with variations in adsorbate concentration showed that the adsorption ability of all samples decreased with increasing methylene blue concentration, the highest capacity and efficiency were 32,41 mg g-1 and 62,61%. Optimum adsorption time conditions at 75 minutes contact time with adsorption capacity and efficiency of 32,05 mg g-1 and 63,95%. %. The adsorption isotherm model of samples AKD, A8KD and A10KD follows the Freundlich isotherm while sample A12KD follows the Langmuir isotherm, so it is assumed that the active sites on the adsorbent surface are heterogeneous. Determination of surface area based on Langmuir isotherm showed a decrease as microwave irradiation time increased. The adsorption kinetics used by all samples was pseudo second order, assuming a chemical adsorption process.

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Ketersediaan

Informasi Detail

Judul Seri

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No. Panggil

1903112107

Penerbit

Pekanbaru : Universitas Riau – FMIPA – Kimia., 2023

Deskripsi Fisik

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Bahasa

Indonesia

ISBN/ISSN

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Klasifikasi

1903112107

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

Mutia

Versi lain/terkait

Lampiran Berkas

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