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All Journal Journal Of Chemical Process Engineering Jurnal Sains Materi Indonesia
Firdharini, Cherly
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Aerospace Engineering Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology

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Preparasi Katalis Nanomaterial Dari Cangkang Kerang Darah (Anadara Granosa Linn) Untuk Pembuatan Biodiesel Dari Minyak Jelantah Dengan Menggunakan Microwave Ardiansah, Ardiansah; Utami, Hermin Hardyanti; Lutfi, Shokhul; Firdharini, Cherly
Journal of Chemical Process Engineering Vol. 7 No. 1 (2022): Journal of Chemical Process Engineering
Publisher : Fakultas Teknologi Industri - Universitas Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33536/jcpe.v7i1.799

Abstract

Manfaat limbah cangkang kerang darah diantaranya yaitu dapat digunakan sebagai katalis untuk produksi biodiesel. Penelitian ini bertujuan untuk mengetahui sifat katalis dari cangkang kerang darah. Metode yang digunakan adalah metode esterifikasi dan transesterifikasi dengan menggunakan microwave dengan bahan baku jelantah. Hasil penelitian ini menunjukkan bahwa: (1) Berdasarkan hasil analisa XRD menunjukkan puncak utama fase sudut 2θ pada 34.10o yang menunjukkan bahwa senyawa yang diperoleh adalah kalsium Hidroksida (Ca(OH)2), selain itu juga terdapat puncak difraksi sudut 2θ pada 64.20o yang menunjukkan bahwa juga terdapat senyawa kalsium oksida (CaO). Hasil SEM menunjukkan bahwa cangkang kerang darah hasil kalsinasi mempunyai bentuk yang tidak seragam dan juga teragregasi sebagian dengan berdasarkan persamaan Sherrer diperoleh ukuran rata-rata kristal yaitu 23.77 nm. Biodiesel yang dihasilkan dengan menggunakan katalis cangkang kerang darah memiliki densitas 0,89 g/ml, Viskositas 4.05 mm2/s, Angka Asam 0.21 Mg KOH/g dan Gliserol Total sebesar 0.27 % massa dengan waktu optimum untuk produksi biodiesel yaitu pada menit ke 15 dengan konsentrasi 3 %wt/wt dengan perbandingan rasio mol minyak dan metanol yaitu 1: 12.
Effect of Precursor Solvent on the Carbon Micro-Structures Derived from Spray Pyrolysis of Pine Resin (Gondorukem): Preliminary Study Jayadi; Widayatno, Wahyu Bambang; Wismogroho, Agus Sukarto; Firdharini, Cherly; Maddu, Akhiruddin; Alatas, Husin; Sari, Yessie Widya
Jurnal Sains Materi Indonesia Vol. 25 No. 2 (2024): Jurnal Sains dan Materi Indonesia
Publisher : BRIN Publishing (Penerbit BRIN)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/jsmi.2024.893

Abstract

Carbon materials have been widely used in various fields. This study aimed to produce carbon using spray pyrolysis with pine resin (gondorukem) as the precursor and different solvents, namely gondorukem-acetone (GAC), gondorukem-ethyl acetate (GEA), and gondorukem-dichloromethane (GDC). The precursor was prepared in a 1:8 (m/v) ratio, and the spray pyrolysis method was employed by heating the atomized precursor solution in the heating zone of a tube furnace. The atomization precursor was infused with nitrogen gas at a rate of 1 l/min with furnace temperature set at 1000°C with heating times of 5, 10, and 20 mins. The carbonaceous materials produced from the pyrolysis were collected on the wire mesh 1000 that was put on a stainless pipe. Carbon that has been coated on the wire mesh 1000 was analyzed using the optical microscope (OM). The physical properties and morphology of the synthesized carbonaceous material were analyzed using field emission scanning electron microscopy (FE-SEM), Fourier-transform infrared spectroscopy (FTIR), Raman, and Brunaur-Emmett-Teller (BET). Based on FE-SEM analysis, the particle size of the GAC sample has an average of 283.58 nm and the highest carbon content, which reached an average of 97.312 At%. GAC samples had the lowest disorder properties in the Raman spectroscopy test, with the value of ID/IG reaching 0.795764. The functional groups observed were C–H stretching at 2920.49 cm-1, N–H bending at 1629.07 cm-1, and C–O stretching at 1159.70 cm-1. Based on carbon content, disorder properties, and functional group stabilization, carbon from the GAC precursor provides the ideal characteristics to be used as a filter material in medical masks. Meanwhile, based on BET testing, the carbon materials from GEA have the ideal material morphological properties to be used as a filter in medical masks. Spray pyrolysis is an efficient method for producing carbon materials, and the use of gondorukem as the precursor shows great potential for various applications.
Co-Authors Agus Sukarto Wismogroho, Agus Sukarto Akhiruddin Maddu Ardiansah, Ardiansah Husin Alatas Jayadi Lutfi, Shokhul Utami, Hermin Hardyanti Wahyu Bambang Widayatno, Wahyu Bambang Yessie Widya Sari