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All Journal Reaktor TEKNIK Prosiding Seminar Nasional Sains Dan Teknologi Fakultas Teknik Communications in Science and Technology Advance Sustainable Science, Engineering and Technology (ASSET)
Setia Budi Sasongko
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Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology

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SIMULASI KINETIKA REAKSI TRANSESTERIFIKASI MINYAK GORENG BEKAS BERBANTUKAN RADIASI ULTRASONIK Aulia, Haris Nu’man; ., Widayat; Budi Sasongko, Setia
Prosiding SNST Fakultas Teknik Vol 1, No 1 (2012): PROSIDING SEMINAR NASIONAL SAINS DAN TEKNOLOGI 3 2012
Publisher : Prosiding SNST Fakultas Teknik

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Abstract

Abstrak Biodiesel adalah bahan bakar terbaharui, biodegradable, tak beracun dibuat dari minyak atau lemak melalui transesterifikasi dengan alkohol.  Pembuatan biodiesel umumnya memerlukan waktu yang lama, dimana dapat diatasi dengan proses berbantukan gelombang ultrasonik. Adapun untuk keperluan perancangan reaktor data kinetika dibutuhkan. Data-data kinetika yang ada masih terbatas pada proses konvensional.  Penelitian ini bertujuan mempelajari model kinetika reaksi transesterifikasi  minyak goreng bekas berbantukan radiasi ultrasonik. Penelitian drylab (simulasi dengan menggunakan perangkat lunak berbasis matriks) dilakukan dengan mengambil data sekunder dari penelitian Hingu, et al(2010). Pada penelitian tersebut  radiasi ultrasonik dilakukan dengan frekuensi rendah (20 kHz) dengan parameter variasi temperatur, dan daya ultrasonik. Model kinetika reaksi yang digunakan adalah penurunan dari reaksi reversible transesterifikasi orde 4. Hasil validasi menunjukkan bahwa model kinetika reaksi yang digunakan dapat menggambarkan kondisi yang sebenarnya dari proses transesterifikasi berbantukan radiasi ultrasonik dimana nilai coefficient determination R2 > 0,9. Adapun model kinetikanya adalah sebagai berikut :   Dalam persamaan tersebut  rA,P,R,T,CAo,X,XAe  dan M secara berurutan adalah kecepatan reaksi transesterifikasi, daya ultrasonik, konstanta gas ideal, suhu, konsentrasi awal bahan baku, konversi tiap waktu, konversi saat setimbang dan perbandingan molar metanol.   Kata kunci: simulasi kinetika, transesterifikasi ultrasonik
SIMULASI PENGELOLAAN SAMPAH KOTA DENGAN POWERSIM Budi Sasongko, Setia
TEKNIK Volume 29, Nomor 2, Tahun 2008
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (238.572 KB) | DOI: 10.14710/teknik.v29i2.1938

Abstract

This article is developed based on the previous articles in this journal about municipa solid waste (MSW)or rubbish in municipal which should be well managed to withdraw from negative effect. Based on thesecondary data can be prepared computation model using Powersim as the objective of this article.Application of Powersim is also discussed in this article to develop operation of the simulator. Thesimulation of the municipal solid waste management is the action to replicate the real situation or event toget the effect or appearance system. The results of computation model by Powersim can be simulatedseveral activities of the municipal solid waste such as the environmentalist or the decision maker to carryout clean municipal.
Annular split level shear tester sebagai alat pengukur karakteristik aliran bahan padat butiran Setia Budi Sasongko
Reaktor Volume 5 No. 1 Juni 2001
Publisher : Dept. of Chemical Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (3238.048 KB) | DOI: 10.14710/reaktor.5.1.16-20

Abstract

Jenike Shear Tester telah dikenal dengan baik sebagai suatu instrumen untuk mengetahui sifat pengaliran dari suatu bahan padat butiran. Hasil pengukuran bahan berdasarkan Jenike Shear Tester ini telah direkomendasikan sebagai suatu standar. Akan tetapi instrument ini memiliki eberapa keterbatasan antara lain: keterbatasan untuk geseran horizontal demikian juga dengan jumlah titik untuk membuat kurve patahan, diperlukan beberapa sample untuk membuat kurve patahan, dan juga adanya ketidak uniform antara bagian yang dekat dengan cincin dengan bagian tengah cincin. Untuk mengatasi hal ini, kemudian Peshcl mengembangkan shear tester jenis totational (RO 200), akan tetapi pada kenyataan masih terdapat beberapa kelemahan. Dengan mengurangi kelemahan yang terdapat pada  Peschl Shear Tester, maka pada penelitian ini, dikembangkan Shear Tester jenis Annular Split Level dengan hasil pengukuran yang mendekati hasil Jenike Shear Tester.Keyword : Shear Tester, Rotational  Shear Tester, Annular Split Level Shear Tester
Recent Advances in Catalytic Systems for the Sustainable Synthesis of Ethyl Levulinate from Biomass Mhd. Shaumi Al Anshar; Luqman Buchori; Didi Dwi Anggoro; Setia Budi Sasongko; Istadi
Advance Sustainable Science Engineering and Technology Vol. 7 No. 3 (2025): May - July
Publisher : Science and Technology Research Centre Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/asset.v7i3.1973

Abstract

The esterification of levulinic acid to ethyl levulinate presents challenges in catalyst efficiency, reusability, and environmentally friendly process design, restricting commercial scalability.  This study examines recent studies on diverse catalysts, including Deep Eutectic Solvents (DES), homogeneous and heterogeneous systems, and their effects on yield.  DES is positioned as a more sustainable option, with yields as high as 99.8%, quicker reaction times, and a lower environmental effect.  While heterogeneous catalysts require harsher conditions and have reusability difficulties, DES provides a greener and more efficient alternative to produce ethyl levulinate.  Life cycle assessments (LCA) of DES procedures reveal reductions in energy usage and greenhouse gas emissions of up to 69.72%.  Future research should focus on improving DES recovery and scalability for industrial applications.  This effort supports the United Nations' Sustainable Development Goals (SDGs), namely SDG 7 (Affordable and Clean Energy), SDG 12 (Responsible Consumption and Production), and SDG 13 (Climate Action).
Optimization of ultrasound assisted extraction of sappan (Caesalpinia sappan L) wood for preparation of high quality extract Djaeni, Moh; Budi Sasongko, Setia; Yuni Susanti, Devi; Mahatmanti, F Widhi; Cahyo Kumoro, Andri; Kurniasari, Laeli
Communications in Science and Technology Vol 10 No 1 (2025)
Publisher : Komunitas Ilmuwan dan Profesional Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21924/cst.10.1.2025.1710

Abstract

This study optimized the Ultrasound-Assisted Extraction (UAE) of sappan wood (Caesalpinia sappan L.) using Central Composite Design-Response Surface Methodology (CCD-RSM) and investigated its kinetics. Temperature, solvent-to-solid ratio, and extraction time were selected as independent variables with extract yield as the response. Analysis of Variance (ANOVA) showed that the solvent-to-solid ratio significantly affected yield. Optimal extraction conditions were 69.9°C, 29.9 mL/g, and 20.2 min, producing approximately yield of 0,293 mg GAE/g sample. High Performance Liquid Chromatography (HPLC) confirmed the presence of brazilin, while Fourier Transform InfraRed (FTIR) analysis indicated the retention of functional groups. UAE was shown to enhance extraction efficiency and preserve phenolic compounds. Additionally, the extraction process was modeled, resulting in a validated effective diffusivity (De) of 1.8 × 10?? cm²/s, The kinetic study was useful in industrial application especially to determine appropriate extraction time.
Co-Authors . Widayat Andri Cahyo Kumoro Aulia, Haris Nu’man Didi Dwi Anggoro F Widhi Mahatmanti Istadi Laeli Kurniasari Luqman Buchori Mhd. Shaumi Al Anshar Moh Djaeni Yuni Susanti, Devi