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All Journal JURNAL KIMIA SAINS DAN APLIKASI JURNAL INTEGRASI PROSES Jurnal Pengabdian UntukMu NegeRI Walisongo Journal of Chemistry Jurnal Pengabdian Masyarakat Asia REACTOR : Journal of Research On Chemistry And Engineering SAINTI: Majalah Ilmiah Teknologi Industri Venus: Jurnal Publikasi Rumpun Ilmu Teknik Jurnal Pengabdian Mahakarya Masyarakat Indonesia
Addin Akbar
Politeknik ATI Padang
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Designing Coffee Bean Storage Shelves and Rearranging the Layout of the Storage Warehouse in the Coffee Processing Unit of the Solok Sirukam Sepakat Producer Cooperative, Solok Regency Addin Akbar; Rizaldi Sardani; Suci Oktri Viarani; Wahyu Fitrianda; Dedy Rahmad; Demi Ramadian
Jurnal Pengabdian UntukMu NegeRI Vol. 8 No. 3 (2024): Pengabdian Untuk Mu negeRI
Publisher : LPPM UMRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37859/jpumri.v8i3.7755

Abstract

One of the coffee producers in West Sumatra is the Solok Sirukam Sepakat Producers Cooperative, which has a business line called Agroforestry Unit focusing on coffee cultivation and processing. The brand name of the produced coffee is Solok Sirukam. The main issue currently faced by the cooperative is the storage of coffee beans after drying. So far, the beans have been stored in a disorganized manner on display racks. Additionally, the layout of the storage warehouse does not meet the applicable standards. Therefore, this activity aims to design a proper and adequate coffee bean storage rack to ensure the green beans meet storage standards. This will enable the coffee producers' cooperative to implement good coffee storage practices and produce beans according to proper processing standards. The result of using the newly designed storage rack shows a more organized arrangement. The rack includes tiered shelves with circular metal dividers, which allow for air circulation between the stacks of coffee beans, helping to maintain their moisture. The storage rack is designed to be tiered and columned, allowing for the storage of more coffee beans and grouping products with the same production code, facilitating easier retrieval for the next processing stage.
Synthesis of Calcium Glyceroxide Catalyst from Pensi Shells for CPO-Based Biodiesel Production Addin Akbar; Dedy Rahmad; Eko Supriadi; Dwi Kemala Putri
Jurnal Kimia Sains dan Aplikasi Vol 28, No 1 (2025): Volume 28 Issue 1 Year 2025
Publisher : Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jksa.28.1.1-7

Abstract

The synthesis of a calcium glyceroxide catalyst derived from pensi shells for biodiesel production using crude palm oil (CPO) has been successfully conducted. The catalyst was prepared via the wet impregnation method by reacting CaO with glycerol in methanol as a solvent for 5 hours at 65°C, with catalyst-to-glycerol ratios of 1:1, 1:1.5, and 1:2. The glycerol used was obtained from crude glycerol, a by-product of biodiesel transesterification. CaO was derived from the calcination of pensi shells at 1000°C. The synthesized catalyst was tested for activity in biodiesel production from CPO. The test parameters included catalyst concentrations of 1.5%, 2%, and 2.5%, reaction times of 2 hours and 4 hours, and oil-to-methanol molar ratios of 1:5. The biodiesel yield for a 2-hour reaction time at catalyst concentrations of 1.5%, 2%, and 2.5% was 56.32%, 54.80%, and 50.19%, respectively. For a 4-hour reaction time at the same concentrations, the biodiesel yields were 40.28%, 60.73%, and 65.98%, respectively. Catalyst characterization was performed using XRD, XRF, SEM, and FTIR to support the activity test data. SEM analysis visually confirmed the bonding between CaO and glycerol. XRD results revealed the highest peaks at 2θ angles of 37.621° for CaO and 34.101° for Ca(OH)2, indicating a bond formation between CaO and glycerol. XRF analysis determined a CaO concentration of 96.21%. FTIR analysis identified the presence of glycerol through dominant -OH and C-O groups. The quality of the resulting biodiesel was tested against SNI (Indonesian National Standard) parameters. The analysis showed the highest methyl ester content (95.6%) at a reaction time of 4 hours. The highest oxidation stability (10.77 hours) was observed at a reaction time of 2 hours. Additional results included an acid number of 0.1%, total glycerol content of 0.279%-b, free glycerol content of 0.018%-b, and viscosity at 40°C of 3.559 mm2/s. The quality test results demonstrated that several parameters met SNI biodiesel standards.
Rancang Bangun Biodigester Untuk Menghasilkan Biogas Berbahan Baku Limbah Sayur Kol dengan Campuran Rumen Sapi dan EM4 Dhanu Fransgio Pratama Surya; Ferecia Fedora; Addin Akbar; Khairul Akli
Venus: Jurnal Publikasi Rumpun Ilmu Teknik  Vol. 3 No. 3 (2025): Venus: Jurnal Publikasi Rumpun Ilmu Teknik
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/venus.v3i3.836

Abstract

The large number of cattle breeders in Indonesia has positive and negative values. Cattle farmers generally produce livestock waste such as cow rumen. Cow rumen can be used as a starter for alternative biogas energy production, and cabbage vegetable waste has the potential to be used as raw material for making biogas, because it contains nutrients such as crude protein (PK) 22.47%, crude fat (LK) 3.05%, crude fiber (SK) 12.09%, dry matter 10.22% and extract material without nitrogen 34.96%. Apart from that, in this research cow rumen and EM4 were also used as starters for the anaerobic fermentation process. The cow's rumen contains methane bacteria, namely Methanosarcina sp, and the cow's rumen also contains quite high levels of organic compounds with a COD value of 17,183 mg/l. Effective Microorganisms (EM4) are bacteria whose function is to accelerate the degradation process of organic materials. The aim of this research is to design a biodigester, and carry out biodigester design trials. The research methods carried out are COD analysis, CH4 analysis and pH analysis. The results showed that the percentage of CH4 increased in a mixture of 100% cow rumen, because the total COD value in the substrate was directly proportional to the addition of the cow rumen composition. This can be seen from the total COD in 100% beef rumen starter of 1175 ppm.
PENURUNAN KANDUNGAN ASAM LEMAK BEBAS (ALB) PADA CRUDE PALM OIL (CPO) MELALUI METODE GLISEROLISIS UNTUK BAHAN BAKU BIODIESEL Akbar, Addin; Supriadi, Eko; Jayanti, Regna Tri; Fauzan, Adrian
JURNAL INTEGRASI PROSES Vol 14, No 1 (2025)
Publisher : JURNAL INTEGRASI PROSES

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/jip.v14i1.28057

Abstract

Crude palm oil (CPO) adalah minyak nabati yang dapat digunakan sebagai bahan baku pembuatan biodiesel. Namun, pembuatan biodiesel dari CPO terkendala kandungan asam lemak bebas (ALB) yang cukup tinggi. Rata-rata kandungan ALB pada CPO adalah 3-5%. Selain itu proses pemurnian CPO yang cukup panjang menambah biaya produksi biodiesel. Gliserolisis adalah metode pemurnian CPO yang sekaligus menurunkan kandungan ALB dengan menggunakan gliserol sebagai prekursor utama. Pada penelitian ini telah dilakukan reaksi gliserolisis CPO dengan tujuan menurunkan ALB hingga < 2%, sehingga dapat dijadikan sebagai bahan baku pembuatan biodiesel. Gliserol yang digunakan berasal dari gliserol mentah produk reaksi transesterifikasi dan juga gliserol komersial sebagai pembanding. Hasil penelitian menunjukkan pada rasio molar CPO:gliserol mentah 1:0,5, 1:0,75, 1:1, dan 1:1,5 pada waktu reaksi 60 menit dan 1% katalis terjadi penurunan ALB sebesar 78,7%, 81,5%, 84,0%, dan 94,0%. Sedangkan untuk gliserol komersial dengan variasi yang sama, terjadi penurunan ALB sebesar 87,4%, 89,3%, 90,6%, dan 96,7%. Telah dilakukan juga gliserolisis pada rasio molar 1:1 untuk waktu reaksi 30 menit dan katalis 0,5% dan 0,75% terjadi penurunan ALB 39,5% dan 55,3%. Kemudian untuk rasio molar dan konsentrasi katalis yang sama pada waktu reaksi 45 menit didapatkan penurunan ALB 47,2% dan 60,2%. Hasil penelitian menunjukkan bahwa gliserolisis menggunakan gliserol mentah dapat menurunkan ALB CPO sesuai dengan standar bahan baku biodiesel.
Co-Authors Adi, Tegar Trikora Amrin, M. Zhafran Zharif Dedy Rahmad Dedy Rahmad Dedy Rahmad Demi Ramadian Demi Ramadian Dhanu Fransgio Pratama Surya Dwi Kemala Putri Dwi Kemala Putri Eko Supriadi Elsa Monika Fauzan, Adrian Ferecia Fedora Hidayat, Salsabila Alifia Jayanti, Regna Tri Khairati, Miftahul Khairul Akli Khairul Akli Khairul Akli Maria Isfus Senjawati Melysa Putri NH, Harmiwati Phuong, Nguyen Thi Thanh Rahmad, Dedy Rita Youfa Rizaldi Sardani Rizaldi Sardani Rizki Fadhillah Lubis Suci Oktri Viarani Suhardito, Ibnu Supriadi, Eko Syarie Hidayah Wahyu Fitrianda Wahyu Fitrianda Mufti Yolanda Aprila