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All Journal Jurnal Kimia Riset Jurnal Teknik Kimia dan Lingkungan
Arief Adhiksana
Department of Chemical Engineering, Politeknik Negeri Samarinda
Chemical Engineering, Chemistry & Bioengineering Chemistry Energy Engineering Materials Science & Nanotechnology

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Effect of Catalysts H2SO4 8% and Baggase Ratio on Yield of Furfural with Hydrolysis Method Using Microwaves Arief Adhiksana; Ayu Chandra Kartika Fitri; Vini Kumara Lalita Siniwi; Medya Ayunda Fitri
Jurnal Teknik Kimia dan Lingkungan Vol. 6 No. 1 (2022): April 2022
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (540.281 KB) | DOI: 10.33795/jtkl.v6i1.289

Abstract

Ampas tebu mengandung pentosan sebesar 12,7%. Kandungan pentosan yang cukup tinggi dalam ampas tebu dapat digunakan sebagai bahan baku pembuatan furfural melalui proses hidrolisis. Penelitian ini bertujuan untuk menentukan pengaruh rasio ampas tebu dan katalis H2SO4 terhadap yield furfural yang didapat dari proses hidrolisis menggunakan microwave. Ampas tebu ditambahkan dengan H2SO4 8% sebagai katalisator dengan variasi rasio ampas tebu dan katalisator H2SO4 yaitu 1:20, 1:30, 1:40, 1:50, dan 1:60 pada temperatur microwave 100oC dan waktu reaksi 75 menit. Sampel dianalisa secara kualitatif dengan uji warna menggunakan anilin- asetat sebagai pereaksi. Setelah anilin-asetat ditambahkan ke sampel, warna sampel berubah dari kuning cerah menjadi merah sebagai tanda sampel mengandung furfural. Furfural yang dihasilkan dianalisa untuk mengetahui yield dari furfural dengan menggunakan Gas Chromatography (GC). Hasil penelitian menunjukkan yield furfural terbaik pada rasio ampas tebu dan katalisator H2SO4 1:30 yakni sebesar 0,28%. The sugar cane bagasse contains 12.7% pentosan. The relatively high pentosan content in the sugar cane bagasse can be used as the raw material of furfural production by utilizing the hydrolysis process. This research aims to determine the effects of ratio variations of bagasse and H2SO4 catalyst on the yield of furfural obtained from the hydrolysis process using a microwave. The sugar cane bagasse was added with H2SO4 8% as catalyst with a variations ratio of sugar cane bagasse and H2SO4 catalyst that is 1:20, 1:30, 1:40, 1:50, and 1:60 in a microwave with the reaction temperature of 100oC and reaction time of 75 minutes. The sample was analyzed qualitatively with a color test by using aniline-acetic as the reactant. After the aniline-acetic was added to the sample, the color of the sample changed from bright yellow to red as a sign that the sample contains furfural. The obtained furfural was analyzed to find out the yield of furfural by using Gas Chromatography (GC). The research product showed that the best yield of furfural on the ratio of bagasse and H2SO4 catalyst of 1:30 is 0.28%.
EFFECT OF MICROWAVE IRRADIATION TIME TO DEACETYLATION PROCESS OF CHITIN FROM SHRIMP SHELLS Arief Adhiksana; Wahyudi Wahyudi; Zainal Arifin; Muh Irwan
Jurnal Kimia Riset Vol. 8 No. 1 (2023): June
Publisher : Universitas Airlangga, Campus C Mulyorejo, Surabaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jkr.v8i1.40222

Abstract

Microwaves have been used in various organic synthesis applications. The use of microwaves provides many advantages, including relatively short start-up and heating times, energy efficiency and process costs, easy and precise process control, selective heating, better final product quality, and improved dry material quality. Microwaves were used in this study to convert chitin into chitosan and to determine the effect of deacetylation time on the degree of deacetylation of chitosan, which was in accordance with the Indonesian National Standard (SNI 7949:2013). The chitin deacetylation process was carried out by varying the heating time to 5, 7, 11, and 15 minutes with a power of 350 W. Two grams of chitin were mixed with 40 mL of 70% NaOH solution in a beaker. The mixture was put in a microwave at a constant temperature of 70 °C. Chitosan was washed until neutral and then dried in an oven. The degree of deacetylation (DD) was analyzed using Fourier Transform Infrared (FTIR) spectroscopy. The results showed that A deacetylation degree of 79.96% was achieved at a reaction time of 15 min. The water content of chitosan was determined to be 9.15%.
Co-Authors Ayu Chandra Kartika Fitri Medya Ayunda Fitri Muh Irwan Vini Kumara Lalita Siniwi Wahyudi Wahyudi Zainal Arifin