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All Journal Jurnal Teknologi Dedikasi: Jurnal Pengabdian Kepada Masyarakat Molekul: Jurnal Ilmiah Kimia Jurnal Riset, Inovasi, Teknologi & Terapan
Ismet, Rhahmasari
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Religion Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Economics, Econometrics & Finance Electrical & Electronics Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Library & Information Science Materials Science & Nanotechnology Mechanical Engineering Social Sciences Other

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Utilization of Used Cooking Oil from Street Vendor: Recycle and Anti-Oxidant Enrichment with Moringa oleifera leaves Ismet, Rhahmasari; Sianipar, Rut Novalia Rahmawati; Adelia, Nesha; Filaila, Euis; Jovianto, Andrian; Firdaus, Ridwan; Hanifah, Hanifah; Dwiastuti, Rahma; Aninda, Yunita; Alfiona, Della; Akmalina, Rifkah; Iswantini, Dyah; prasetyo, Joni
Molekul Vol 19 No 3 (2024)
Publisher : Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.jm.2024.19.3.11023

Abstract

Used cooking oil (UCO) is abundant in Indonesia because of lifestyle of people. Especially UCO from street vendors had very low quality based on its Free Fatty Acid (FFA) content that reached 5.074%. When UCO was deposed into drainage, it would pollute the environment. Low grade UCO from street vendors contained Unsaturated-Fatty-Acid, Saturated-Fatty-Acid, and other hydrocarbons. Recycling UCO to replace edible oil considered more desirable rather than biodiesel since higher added value. FFA was the most undesired compound affecting cooking oil quality. FFA reducing with diluted 0.1 M NaOH 10% v/v could reduce FFA from 5.07% to 0.53%. Bleaching earth (BE) content mostly Si, Nb, Al, Ca and Na was safe to treat UCO for edible cooking oil. BE played cleaning UCO but absorbed the oil 17%. ANOVA analysis for BE and Moringa oleifera leaves (MOL) treatment fits with Reduced Quadratic model. Based on the ANOVA, the model showed that the decrease of FFA was determined significantly by BE amount and temperature with P-values less than 0.05. Optimization for BE treatment was done using Response Surface Method to find out the lowest FFA. And based on the simulation, it was obtained 0.2854% while the experimental results showed 0.2908%. Furthermore, BE combined with Moringa oleifera leaves (MOL) that known anti-oxidant source was used to treat UCO. UCO originally content stronger anti-oxidant activity rather fresh palm oil with IC50 62.12 and 83.03 mg/kg, respectively. Stronger anti-oxidant in UCO allegedly derived from fried foods. Treatment 10% BE and 5% MOL considered optimal for good appearance edible oil, little yellow greenish. Moreover, GC/MS analysis showed improvement active compounds in treated UCO with 5, 7.5 and 10 g MOL in 150 ml UCO with 24.36%, 30.32% and 37.76% active compounds, respectively. Moreover, anti-oxidant measured with IC50 the treated UCO were 43.18, 42.33 and 41.78 mg/kg, respectively. Increasing the number of MOL did not significantly increase the anti-oxidant activity. Anti-oxidant detected in treated UCO identified such as ethyl acridine, indolizine derivatives, cyclotrisiloxane-hexamethyl, benzimidazoles, and Fumaric acid. Based on the results, UCO recycling is applicable for a community, save expenses and strengthen food security and food sovereign. Further thought for its implementation is to design an integrated system from collecting UCO in a reservoir tank equipped with filter, recycling process and finally product tank at mini plant scale. Keywords: Anti-oxidant enrichment, bleaching earth, edible treated UCO, Moringa oleifera leaves (MOL) , UCO recycle
STUDI LITERATUR: OPTIMALISASI EKSTRAKSI SENYAWA ANTIOKSIDAN DARI AMPAS KOPI MENGGUNAKAN METODE KONVENSIONAL DAN MODERN Sholihah, Lia Wildatus; Ahyar, Fahmi Al; Susila, Usi; Iman, Saeful; Ismet, Rhahmasari
Bestari: Jurnal Pengabdian Kepada Masyarakat Vol 5, No 2 (2025)
Publisher : Sekolah Tinggi Keguruan dan Ilmu Pendidikan (STKIP) Melawi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46368/dpkm.v5i2.4190

Abstract

Ampas kopi (spent coffee grounds/SCG) sebagai limbah agroindustri yang selama ini kurang dimanfaatkan, diketahui mengandung senyawa bioaktif yang berperan sebagai antioksidan alami. Studi ini bertujuan untuk mengkaji efektivitas berbagai metode ekstraksi, baik secara konvensional maupun modern dalam mengoptimalkan isolasi senyawa antioksidan dari ampas kopi. Metode konvensional seperti maserasi dan Soxhlet menunjukan efektivitas yang berbeda: maserasi menjabat kestabilan senyawa termolabil namun memiliki rendeman rendah sebidang 12,1%, sedangkan soxhlet menghasilkan rendemen tinggi sebidang 17,64% tetapi beresiko merusak senyawa sensitif akibat suhu tinggi. Sementara itu metode modern seperti ekstraksi berbantuan ultrasonic (EAU) menghasilkan ekstrak sebanyak 16%,microwave-assisted extraction (MAE) yang di kombinasikan dengan pulshed electric fields (PEF) ekstrak nya sebidang 15%, serta fermentaisi padat (solid-state fermentation/SSF) dengan ekstrak sekitar 30-50%, secara energis mampu meningkatkan kapasitas oksidan. Namun, kompleksitas operasi, kebutuhan energi, dan keterikatan skalabilitas menjadi tantangan tersendiri. Dengan demikian, integrase teknologi berbasis fisik, termal, dan bioteknologis menjadi strategi potensi dalam mentransformasi ampas kopi sebagai bahan aktif alami untuk aplikasi pangan, farmasi, maupun kosmetika berkelanjangan.dan keterikatan skalabilitas menjadi tantangan tersendiri. Dengan demikian, integrase teknologi berbasis fisik, termal, dan bioteknologis menjadi strategi potensi dalam mentransformasi ampas kopi sebagai bahan aktif alami untuk aplikasi pangan, farmasi, maupun kosmetika berkelanjangan.dan keterikatan skalabilitas menjadi tantangan tersendiri. Dengan demikian, integrase teknologi berbasis fisik, termal, dan bioteknologis menjadi strategi potensi dalam mentransformasi ampas kopi sebagai bahan aktif alami untuk aplikasi pangan, farmasi, maupun kosmetika berkelanjangan.
Optimasi Suhu Pembuatan Arang Aktif Dari Ampas Kopi Terhadap Penurunan Kadar COD Dan BOD Pada Air Limbah Tahu Adlin, Irman Ansari; Ismet, Rhahmasari; Amalia, Syara; Putri, Amanda; Jufrinaldi, Jufrinaldi
Jurnal Riset, Inovasi, Teknologi & Terapan Vol 3, No 2 (2025): Juni
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/ristera.v3i2.7444

Abstract

The tofu industry in Indonesia faces significant challenges in managing liquid waste, which typically contains high levels of Biochemical Oxygen Demand (BOD) and Chemical Oxygen Demand (COD), exceeding the government-set maximum limits. This study aims to explore the optimization of activated carbon-making temperature from coffee grounds and evaluate its ability to reduce COD and BOD levels in tofu industry wastewater. The methods used in this study include the preparation and characterization of activated carbon produced from coffee grounds with temperature variations from 150°C to 550°C. The results showed that the optimal temperature for preparing active carbon was 450°C, resulting in an active carbon yield of 32.56%. At this temperature, the measured water content was 2.96%, ash content was 2.96%, and iodine absorption was 787.24 mg/g, all of which met the standards of SNI No. 06-3730-1995. Evaluation of the impact of using the resulting activated carbon on tofu industry wastewater revealed a decrease in COD levels from 373.25 mg/L to 122.86 mg/L, corresponding to a 67% decrease, as well as a decrease in BOD levels from 191.65 mg/L to 20.02 mg/L, equivalent to an 89% decrease. These findings suggest that activated carbon derived from coffee grounds can be an effective and sustainable alternative for wastewater treatment, providing a more environmentally friendly waste management solution.
Pengolahan Limbah Cair Industri Beauty dan Personal Care Menggunakan Metode Koagulasi dan Flokulasi Hakim, Rusnia Junita; Adelina, Dina; Ismet, Rhahmasari; Muttaqim, Maulana
Jurnal Teknologi Vol 25, No 2 (2025): Agustus 2025
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/teknologi.v25i2.7018

Abstract

The beauty and personal care industry generates wastewater that poses a potential threat to the environment if not properly treated. As a small-scale industry, there is a need for an efficient wastewater treatment technology that requires minimal cost and land area. This study aims to analyze the characteristics of wastewater from the industry and evaluate the effectiveness of coagulation and flocculation processes in reducing pollutant levels. The jar test method was employed using varying doses of coagulant (PAC) and flocculant (anionic polymer) at concentrations of 60, 80, and 100 ppm for PAC, and 1–3 ppm for the polymer. Initial test results indicated that the parameters for TDS, TSS, pH, EC, and turbidity did not meet the effluent quality standards set by the Indonesian Ministry of Environment Regulation No. 5 of 2014. The optimum dosage was found to be 80 ppm PAC combined with 3 ppm anionic polymer, which reduced TSS from 1482 mg/L to 83 mg/L and turbidity from 3120 NTU to 20 NTU. The best reduction in EC was achieved with 100 ppm PAC and 3 ppm polymer, lowering EC from 3210 µS/cm to 399 µS/cm. All parameters, except for TDS, complied with the established effluent quality standards.
Co-Authors Adelia, Nesha Adelina, Dina Adlin, Irman Ansari Ahyar, Fahmi Al Akmalina, Rifkah Alfiona, Della Amalia, Syara Aninda, Yunita Dwiastuti, Rahma Dyah Iswantini Euis Filaila Firdaus, Ridwan Hakim, Rusnia Junita hanifah hanifah Iman, Saeful Joni Prasetyo, Joni Jovianto, Andrian Jufrinaldi, Jufrinaldi Muttaqim, Maulana putri, amanda Sholihah, Lia Wildatus Sianipar, Rut Novalia Rahmawati Susila, Usi