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All Journal CHEESA: Chemical Engineering Research Articles KOPEMAS Jurnal Pengabdian Mitra Indonesia
Alek Al Hadi
Universitas Sriwijaya
Chemical Engineering, Chemistry & Bioengineering Chemistry Social Sciences

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PENGENALAN SISTEM PENGEBORAN DAN PELEDAKAN PADA INDUSTRI PERTAMBANGAN DI SMK TEKNOLOGI NASIONAL PALEMBANG RR. Yunita Bayuningsih; Alek Al Hadi; Bochori Harry Waristian; Mega Puspita
Konferensi Nasional Pengabdian Masyarakat (KOPEMAS) #5 2024 Konferensi Nasional Pengabdian Masyarakat (KOPEMAS) 2022
Publisher : Konferensi Nasional Pengabdian Masyarakat (KOPEMAS) #5 2024

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Abstract

Pada program pengabdian ini akan diberikan sosialisasi dan pembimbingan dalam rangka memahami konsep teoritis, disertai video pembelajaran dan simulasi pengeboran dan peledakan di industri pertambangan, sehingga siswa-siswi di SMK Teknologi Nasional Palembang dapat memahami secara jelas dan rinci mengenai kegiatan pengeboran dan peledakan. Simulasi kegiatan pengeboran dan peledakan menjadi salah satu cara untuk memudahkan memahami kedua kegiatan tersebut. Sebagai bentuk pengabdian kepada masyarakat, hasil riset disampaikan kepada siswa-siswi SMK Teknologi Nasional Palembang untuk memberikan gambaran dan pemahaman tentang kegiatan pengeboran dan peledakan di pertambangan. Hasil penyebaran kuesioner menunjukkan adanya peningkatan pemahaman siswa/i dari sebelum dilakukan sosialisasi dan sesudah dilakukan sosialisasi.
Improving the Knowledge of Tanjung Bubuk Community at Palembang Regarding Plastic Biocomposites from Plastic Waste-Kapok Fiber Rahmatullah; Rizka Wulandari Putri; Prahady Susmanto; Harry Waristian; Alek Al Hadi; Muhammad Rendana; Selpiana
Jurnal Pengabdian Mitra Indonesia Vol 2 No 2: Mei 2026
Publisher : Mitra Akademia Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.67380/jpmina.v2i2.34

Abstract

Plastic biocomposites play a significant role in reducing environmental impacts as an alternative to conventional plastics due to their more readily biodegradable nature. Plastic biocomposites can be made using a mixture of conventional plastic waste and kapok fiber through certain stages. The purpose of this community service is to increase public knowledge about how to process plastic waste and kapok fiber as raw materials for plastic biocomposites. Data collection techniques were carried out by providing an explanation of the procedure for making plastic biocomposites, followed by filling out a questionnaire about the level of understanding of the material provided. Based on the results of the survey through filling out the questionnaire before and after the activity was carried out, many residents did not know what plastic biocomposites were and only learned and understood after the activity was carried out.
Characteristics and Thermal Stability of Biobriquettes Sub-Bituminous Coal and Coconut Shell (Cocos nucifera) Mixture Rizka Wulandari Putri; Rahmatullah; Selpiana; Nyayu Gandasari; Salsabillah Nur Fazrin; Alek Al Hadi; Muhammad Haviz
CHEESA: Chemical Engineering Research Articles Vol. 9 No. 1 (2026): In Progress
Publisher : Universitas PGRI Madiun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25273/cheesa.v9i1.24440.53-63

Abstract

Low-grade coal, such as sub-bituminous, is characterized by low calorific value. In this context, combining coal (C) with coconut shell (CS) biomass can upgrade the quality. Therefore, this study aims to analyze the effect of feed ratio and carbonization temperature on improving the biobriquette quality. The processes included preparation, carbonization at 300°C and 400°C, variation in feed ratios, mixing, molding, and drying. Evaluation was conducted for proximate composition, calorific value, combustion rate, and thermal stability characteristics using Thermogravimetric Analysis (TGA) and Differential Thermal Analysis (DTA). The results showed that the biobriquette with 100CS contained 100% CS carbonized at 400°C. Furthermore, it had the best quality, with 5.05% moisture content, 1.83% ash content, 36.11% volatile matter, 57.01% fixed carbon, and a calorific value of 6,075 cal/g. These values met the Indonesian Ministry of Energy Regulation No. 47 of 2006. TGA–DTA analysis showed a total mass loss of 98–99% up to approximately 800°C, featuring the best thermal stability. Based on observation, 100% coconut shell (100CS) provided the best quality. This did not imply that hybrid composition was ineffective. For combustion performance tests, the highest combustion rate was recorded in a mixture of 50C: 50CS, namely 0.3005 g / min. The addition of coal to biomass briquettes aimed to improve combustion performance, specifically through increasing the combustion rate. This suggested that the briquettes are easier to ignite (easy ignition), and heat is generated more quickly. In conclusion, the mixture of coal and coconut shell is suitable for applications that require fast heating, such as cooking activities.
Co-Authors Bochori Harry Waristian Harry Waristian M. Puspita Muhammad Haviz Muhammad Rendana Nyayu Gandasari Rahmatullah Rizka Wulandari Putri RR. Yunita Bayuningsih Salsabillah Nur Fazrin Selpiana, Selpiana Susmanto, Prahady