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All Journal Bulletin of Chemical Reaction Engineering & Catalysis Prosiding Semnastek IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Jurnal Distilasi WIDYA LAKSANA Jurnal Inovator Barometer Jurnal Abdimas Mandiri Best Journal (Biology Education, Sains and Technology) Jurnal Abdi Insani AJARCDE (Asian Journal of Applied Research for Community Development and Empowerment) Aptekmas : Jurnal Pengabdian Kepada Masyarakat PROSIDING SEMINAR NASIONAL PENELITIAN DAN PENGABDIAN KEPADA MASYARAKAT (SNPPM) UNIVERSITAS MUHAMMADIYAH METRO Bulletin of Chemical Reaction Engineering & Catalysis International Journal of Information Engineering and Science
Eka Sri Yusmartini
Program Studi Magister Teknik Kimia, Program Pascasarjana, Universitas Muhammadiyah Palembang, Palembang,
Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Dentistry Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Neuroscience Nursing Physics Public Health Social Sciences Transportation Veterinary Other

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Analysis of Heat Transfer on the Effect from Mineral Crust in Evaporator Semi-Kestner Quintuple Effect Rahadianto Wahyu Triaji; Eka Sri Yusmartini Yusmartini; Mardwita Mardwita
AJARCDE (Asian Journal of Applied Research for Community Development and Empowerment) Vol. 6 No. 3 (2022)
Publisher : Asia Pacific Network for Sustainable Agriculture, Food and Energy (SAFE-Network)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29165/ajarcde.v6i3.125

Abstract

Indonesia as a large population country has the potential to become one of the largest consumers of sugar in the world. Indonesia's national sugar needs amounted to 3.2 million tons per year while domestic production was around 2 million tons. In the sugar industry, the benefits of evaporator tools are to thicken clear juice whose dissolved solid number is 7 - 11 oBrix into a thickened syrup with a dissolved solid of 55 - 60 oBrix, this process occurs through the process of evaporation of water content contained in the material. In one sugar factory, the type of evaporator used is a Semi-Kestner Evaporator with the quintuple effect principle. One of the biggest challenges of evaporators is the decrease in heat value of the evaporator due to the onset of mineral crust that inhibits heat transfer. On September 7th, 2021 Q evaporator 1 is at 135874.8 Kw and on October 26th, 2021 Q evaporator 1 is at 121399.2 Kw. Based on the results of data observations on the evaporator carried out in September 2021 and October 2021, it can be concluded that the decreased heat transfer will cause the evaporator's performance in evaporating water from the sap material (clean juice) so that the material flow rate is getting bigger. Efforts that can be made to overcome this are to carry out mechanical cleaning or chemical cleaning per 28 days of the grinding process, to remove crusts on the tube calandria evaporator.
Egg Shells as an Adsorbent for the Adsorption of Lead (Pb) and Iron (Fe) Metals Eka Sri Yusmartini Yusmartini; Mardwita Mardwita; Atikah Atikah; Suli Cahaya Kaswari
AJARCDE (Asian Journal of Applied Research for Community Development and Empowerment) Vol. 8 No. 1 (2024)
Publisher : Asia Pacific Network for Sustainable Agriculture, Food and Energy (SAFE-Network)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29165/ajarcde.v8i1.349

Abstract

An eggshell is estimated to have around 10,000–20,000 pores; this condition created a chance for the eggshells to be used as an adsorbent. This research aims to activate egg shells used as an adsorbent. Egg shells were applied as an adsorbent in solutions of lead (Pb) and iron (Fe). Test parameters for adsorption capacity were carried out on the optimum mass and absorption contact time with lead (Pb) and iron (Fe) while using the eggshell waste as an adsorbent. The adsorbent quality of egg shells was tested using parameters such as ash content, water content, and adsorption capacity towards methyl blue. This research aims to utilize egg shells as an adsorbent to absorb lead (Pb) and iron (Fe) content using an adsorption process. There are 3 stages of a method for this research to establish: adsorbent preparation, adsorbent activation, and the adsorption process. The adsorption process was carried out with variations of the mass sample, which are 0.75 grams, 1 gram, 1.25 grams, 1.50 grams, and 2 grams and time variations when contact occurred in 20, 30, 40, 50, and 60 minutes. The outcome of this research showed that the highest adsorption capacity at the optimum mass of Pb metal was 1.5 grams at 98.914% and for Fe metal at 96.386%. The highest adsorption capacity results were influenced by Pb metal contact time in 40 minutes, which was 99.30%, and the best capacity for adsorption of Fe metal was at a contact time in 50 minutes, which was 99.82%.
Addition of Plastic Mixture (LDPE) for the Development of Alternative Mixtures in Concrete Blocks Abdullah, Abdullah; Erna Yuliwati; Eka Sri Yusmartini
International Journal of Information Engineering and Science Vol. 2 No. 3 (2025): August : International Journal of Information Engineering and Science
Publisher : Asosiasi Riset Teknik Elektro dan Infomatika Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62951/ijies.v2i3.301

Abstract

This study investigates the potential of Low-Density Polyethylene (LDPE) plastic waste as a partial substitute for sand in concrete block mixtures, focusing on its effects on compressive strength and water absorption. LDPE is a non-biodegradable plastic waste that poses significant environmental challenges. Its incorporation into construction materials offers a promising solution to reduce pollution while enhancing the performance of building components. The research employed LDPE substitution levels of 10%, 15%, 20%, 25%, and 30% by weight of sand, compared against conventional concrete blocks without LDPE. Experimental results revealed that the highest compressive strength was achieved with a 15% LDPE mixture, reaching 80.762 kg/cm² at 28 days of curing—an increase of approximately 40.8% compared to normal blocks, which recorded 57.359 kg/cm². LDPE additions up to 20% maintained favorable strength characteristics, while higher proportions (25% and 30%) led to a decline in mechanical performance. In terms of water absorption, the inclusion of LDPE demonstrated a decreasing trend, attributed to the hydrophobic nature of plastic, which enhances moisture resistance in the concrete blocks. These findings suggest that a 15% LDPE substitution represents an optimal formulation for producing eco-friendly concrete blocks with improved strength and reduced water absorption. The study highlights the dual benefits of waste management and material innovation, aligning with sustainable development goals. By repurposing plastic waste into construction applications, this approach not only mitigates environmental impact but also contributes to the advancement of green building technologies. Further research is recommended to explore long-term durability, thermal properties, and scalability of LDPE-based concrete products in real-world construction settings.
Pemanfaatan Sampah Organik Rumah Tangga Menjadi Cairan Serba Guna dengan Proses Fermentasi di Panti Asuhan Humairoh Palembang Yusmartini, Eka Sri; Kharismadewi, Dian; Atikah; Rahadianto, Wahyu Triaji
Jurnal Abdimas Mandiri Vol. 9 No. 2
Publisher : UNIVERSITAS INDO GLOBAL MANDIRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36982/jam.v9i2.5820

Abstract

Sampah masih menjadi masalah utama di lingkungan, karena jumlah timbunan sampah yang dihasilkan sehari hari dari aktivitas masyarakat. Timbunan sampah pada TPA semakin hari semakin meningkat, kegiatan pengabdian masyarakat ini bertujuan untuk membangun kesadaran tentang pentingnya mengolah sampah organik menjadi cairan serba guna yang dapat digunakan sehari hari dengan memanfaatkan sampah organik. Kegiatan dilakukan di Panti Asuhan Aisyiyah Humairoh, kota Palembang yang diikuti oleh 27 peserta. Eco enzym adalah produk pemanfaatan sampah organik rumah tangga (kulit buah, sisa sayuran) yang masih segar yang difermentasi dengan gula merah atau bisa juga menggunakan molase, dalam wadah kedap udara selama 3 bulan, sampai menjadi larutan aktif. Bahan bahan nya terdiri dari air, gula merah atau molase, dan sampah dari kulit buah serta sayuran. Metode Sosialisasi dan Pelatihan dilakukan dengan dimulai dari persiapan, pretest, pelaksanaan pelatihan dan posttest. Peserta kegiatan berperan aktif dalam kegiatan baik dalam sosialisasi maupun pelatihan.  Evaluasi dilakukan sebelum dan sesudah kegiatan untuk mengetahui tingkat wawasan peserta terkait sosialisasi dan pelatihan yang dipaparkan.  Hasil kegiatan menunjukkan bahwa pemahaman peserta meningkat sebesar 100 % dari semula tidak paham dan kurang paham.   Hasil dari eco enzyme dapat dipanen setelah 3 bulan proses fermentasi. Setelah kegiatan peserta dibagikan produk eco enzyme yang dapat dipakai untuk kebutuhan sehari hari seperti mengepel dan menyiram tanaman. Hal ini dimaksudkan agar peserta dapat merasakan manfaat dari eco enzyme yang diolah menggunakan sampah organik. Pengetahuan masyarakat akan nilai tambah sampah dengan mengolahnya menjadi eco enzyme bertambah, dan diharapkan selanjutnya bisa mandiri membuatnya, baik dilingkungan panti asuhan maupun diluar panti asuhan.
Co-Authors Abdullah Abdullah Ardianto, Feby Ario Oktora Aseptianova Aseptianova Aseptianova Aseptianova Aseptianova Atikah Atikah Atikah Eko Ariyanto Elfidiah, Elfidiah Elvidiah Elvidiah Erna Yuliwati Erna Yuliwati fatimah Fatimah Hery Gunawan Innike Abdillah Fahmi Junanda Marza Kharismadewi, Dian Mardwita, Mardwita Mardwita, Mardwita Meylinda Rahayu Mitayani Purwoko, Mitayani Muhammad Faizal Muhammad Mansyur, Muhammad Mujiharti, Mujiharti - Nidya Wisudawati Nindia Selviana Nindia Selviana Parwanti, Sri Rahadianto Wahyu Triaji Rahadianto, Wahyu Triaji Ridhowan, Thoufiq Rifdah, Rifdah Rifdah, Rifdah Rinjani, Retno - Rivaldo, M. Chobind Robiah, Robiah Septiaranisi, Eci Dwi Sri Martini Suli Cahaya Kaswari Sulton Nawawi Ummi Kalsum Zuber Angkasa