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All Journal Abdimas Talenta : Jurnal Pengabdian Kepada Masyarakat Makara Journal of Science
Saragi, Indah Revita
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Agriculture, Biological Sciences & Forestry Law, Crime, Criminology & Criminal Justice Social Sciences

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Grass-Like Structured Mesoporous Carbon as an Acid Red 119 Dye Adsorbent Krisnandi, Yuni Krisyuningsih; Priantini, Tania; Faisal, Muhammad; Yunarti, Rika Tri; Saragi, Indah Revita; Gunlazuardi, Jarnuzi
Makara Journal of Science Vol. 23, No. 4
Publisher : UI Scholars Hub

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Abstract

Grass-like structured mesoporous carbon was prepared by the soft-template method using triblock copolymer Pluronic F127, affording an organic–organic composite structure between phloroglucinol and formaldehyde. Thermogravimetric analysis revealed that the as-synthesized mesoporous carbon is stable to 900 °C, and X-Ray Diffraction (XRD) analysis confirmed the presence of carbon material structures at 2θ values of 22.020° and 42.420°. A hysteresis loop at relative partial pressures (P/Po) between 0.45 and 0.85 was observed in the N2 adsorption isotherm, indicating that the solid material exhibits mesoporous characteristics, with a homogeneous pore size distribution of 8.863 nm. Scanning Electron Microscope (SEM) images revealed that the bulk carbon surface exhibits a uniform grass-like structure. Furthermore, the as-synthesized mesoporous carbon was investigated for the adsorption of a diazo dye Acid Red 119, and it exhibited an adsorption capacity of 217.7389 mg/g; this capacity is 1.53 times greater than that of commercial activated carbon. Therefore, this mesoporous carbon is a potential adsorbent for the treatment of synthetic coloring waste.
ZnO/SiO2 Composite as Catalyst for the Transformation of Glycerol to Glycerol Carbonate Krisnandi, Yuni Krisyuningsih; Eckelt, Reinhard; Atia, Hanan; Adam, Martin; Saragi, Indah Revita; Martin, Andreas; Richter, Manfred
Makara Journal of Science Vol. 24, No. 1
Publisher : UI Scholars Hub

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Zinc oxide/porous silica (ZnO/SiO2) composite was used as a catalyst to transform glycerol to glycerol carbonate (GC), a chemical intermediate and monomer for the synthesis of new functionalized polymers. The ZnO/SiO2 catalyst was prepared using the direct precipitation method by mixing zinc sulfate solution with Aerosil 300 silica suspension and adding potassium oxalate solution. Catalytic transformation used glycerol and urea (molar ratio = 1:1) at 140 °C, 40 mbar, and various reaction times (1–6 h). The ZnO catalyst exhibited a high percentage of glycerol conversion of 82.38%; however, the yield of GC and selectivity toward GC were relatively low (i.e., 33.33% and 40.46%, respectively). The presence of silica support (ZnO/(x)SiO2 increased the selectivity toward GC and yield of GC to 74.40% to 77.83% and 57.86% to 64.30%, respectively. Furthermore, although its crystallinity decreased, the reused ZnO/(60)SiO2 catalyst still exhibited a high activity. The scanning transmission electron microscopy image indicated the migration of ZnO on the surface of the composite and the possibility of ZnO-glycolate formation, which were also confirmed by FTIR measurement. Nevertheless, these results showed that ZnO/SiO2 is a promising catalyst for the transformation of glycerol to GC.
Natural Aluminosilicate-based Y Zeolite for Catalytic Cracking of n-Hexadecane Khatrin, Irena; Saragi, Indah Revita; Ekananda, Rizki; Hanna, John Vincent; Griffith, Benyamin E; Krisnandi, Yuni Krisyuningsih
Makara Journal of Science Vol. 24, No. 2
Publisher : UI Scholars Hub

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Natural zeolite and kaolin are abundant in Indonesia especially in Java and Belitung islands. These materials generally contain high aluminosilicate minerals that can be used as silica and alumina sources for the formation of NaY zeolite. This research aimed to identify the modification of NaY zeolite structure using Bayat natural zeolite as alumina source and Belitung kaolin as silica source and its catalytic activity for n-hexadecane cracking. Pretreatment of materials were performed in several steps: activation, purification, fragmentation for Bayat–Klaten natural zeolite, and silica extraction for Belitung kaolin. The synthesis of NaY was performed hydrothermally using seed-assisted method with crystallization times of 24 and 48 h. The surface area analysis showed a typical surface area of microporous zeolite (i.e., a pore diameter of 1.897 nm) and surface area of 309.4 cm2/g. Meanwhile, powder X-ray diffraction characterization showed that the as-synthesized materials have the structure of NaY zeolite. The optimum crystallization time was 24 h with Si/Al ratio of 4.10. Furthermore, both synthetic and natural sourced NaY zeolites were converted into HY zeolites and employed as cracking catalyst of n-hexadecane in a fixed-bed reactor at 500 °C for 75 s. The natural sourced HY resulted in 59.80% conversion and 59.80% yield of gasoline product (C9–C12). These values were lower than the results given by synthetic HY (80%).
Increasing the Economic Value of Hydrogel as an Alternative Planting Media at Madrasah Aliyah Swasta Muhammadiyah Sidomulyo Hamid, Muhammadin; Simanjuntak, Crystina; Rianna, Martha; Amaturrahim, Suci Aisyah; Saragi, Indah Revita; Felly, Putri Aldika; Siahaan, Chyntia; Waruwu, Delima; Talanda, Aknes; Tambunan, Miranda
ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat Vol. 9 No. 1 (2024): ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/abdimastalenta.v9i1.16316

Abstract

Hydrogel technology can be used as a solution for indoor growing media. Hydrogel is a three-dimensional polymer network with cross-linked hydrophilic polymers, which are capable of swelling or storing water and physiological solutions up to thousands of times their dry weight, and are not easily soluble. To increase knowledge about ornamental plant cultivation using hydrogel media, a service was carried out by using partners at the Madrasah Aliyah Swasta Muhammadiyah Sidomulyo. This service aims to provide solutions to partners in the form of alternative hydrogel-based planting media made from alginate that are environmentally friendly which can be used as moisture and nutrient control agents. This goal is achieved through outreach activities, training, and the application of alternative planting media on ornamental plants. The target of the results to be achieved is to increase the economic value of hydrogels and to foster the entrepreneurial spirit of the students of Madrasah Aliyah Swasta Muhammadiyah Sidomulyo.
Developing Graphitic Carbon Nitride for Effective Treatment of Organic Pollutants in Industrial Water Nursal; Hamid, Muhammadin; Saragi, Indah Revita; Dinda Amilia; Ivi Briliansi Dalimunthe
ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat Vol. 9 No. 2 (2024): ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/abdimastalenta.v9i2.18224

Abstract

Organic pollutants, including pesticides and industrial waste, have become a significant environmental challenge due to their persistence and difficulty in decomposition, posing serious threats to both environmental health and water quality. This issue is particularly pressing in regions like Penang, where rapid industrial development and urbanization have exacerbated water pollution. In response, various research efforts have explored potential solutions, with graphite emerging as an effective adsorbent for removing toxic compounds from water. Building on this, our study focuses on the synthesis of graphitic carbon nitride (g-C3N4), a material recognized for its high-performance photocatalytic properties. g-C3N4's unique structure and ability to harness solar energy make it a promising candidate for catalyzing the breakdown of organic pollutants into less harmful molecules. Our project aims to develop a cost-effective and scalable method for producing g-C3N4 using readily available materials, with the goal of mitigating organic pollution in Penang. Through a straightforward synthesis process, we seek to make this technology accessible for widespread adoption in water treatment practices. The successful synthesis of g-C3N4 has already been demonstrated, with the process being effectively shared with students from the School of Chemical Science at USM. While further refinements are needed to maximize results, our findings suggest that g-C3N4 can play a crucial role in reducing organic pollution and improving water quality, contributing to the long-term sustainability of Penang's environment.
Innovative Solar Water Pump with Automatic Water Level Regulator for Efficiency Rice Field Irrigation Saragi, Indah Revita; Zuhra, Cut Fatimah; Simanjuntak, Crystina; Amaturrahim, Suci Aisyah; Hamid, Muhammadin; Abdul Ara; M Tegar Aliyu Bangun; Gavrylla Gilbert Siregar; Rio Geby Sitompul; Martahan Dapot Rezeki Sitompul; Alya Nazwariva; Inri Antanya Eukasih Br Karo
ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat Vol. 9 No. 2 (2024): ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/abdimastalenta.v9i2.18225

Abstract

Nowadays, most of human activities are related to the use of technology. The invention of various innovative ideas that simplify human life is essential. One of the uses advancement technologies can applied in agricultural field, especially for irrigation processes since it becomes the critical step in agricultural activity since it ensures that plants receive an adequate water. Due to the importance of irrigation, this community service activity aimed to provide information on how to build a solar pump for irrigation purposes and implement an innovative solar water pump with automatic water level control to improve the efficiency of irrigation of rice fields in Bekiung Village. The system is designed using solar panels as the main energy source, minimizing dependence on conventional electricity and fossil fuels. With the integration of water level sensor and automatic control system, the pump is able to adjust the water supply in real-time based on the actual needs of rice plants. Field tests show that the system is able to provide water consistently and efficiently, reducing water and energy wastage. The implementation of this technology not only improves irrigation efficiency, but also supports environmentally friendly sustainable agriculture. The results of this study are expected to serve as a model for other villages facing similar challenges in irrigation water management.
Co-Authors Abdul Ara Adam, Martin Alya Nazwariva Amaturrahim, Suci Aisyah Atia, Hanan Cut Fatimah Zuhra Dinda Amilia Eckelt, Reinhard Ekananda, Rizki Felly, Putri Aldika Gavrylla Gilbert Siregar Griffith, Benyamin E Hamid, Muhammadin Hanna, John Vincent Inri Antanya Eukasih Br Karo Ivi Briliansi Dalimunthe Jarnuzi Gunlazuardi Khatrin, Irena M Tegar Aliyu Bangun Martahan Dapot Rezeki Sitompul Martha Rianna Martin, Andreas Muhammad Faisal Nursal Priantini, Tania Richter, Manfred Rio Geby Sitompul Siahaan, Chyntia Simanjuntak, Crystina Talanda, Aknes Tambunan, Miranda Waruwu, Delima Yunarti, Rika Tri Yuni Krisyuningsih Krisnandi, Yuni Krisyuningsih