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All Journal Eksergi: Chemical Engineering Journal Prosiding Semnastek Sains Natural: Journal of Biology and Chemistry Chemistry Indonesian Journal of Chemical Research JKPK (Jurnal Kimia dan Pendidikan Kimia) Jurnal Crystal : Publikasi Penelitian Kimia dan Terapannya Jurnal Peduli Masyarakat Journal of Applied Agricultural Science and Technology Applied Research in Science and Technology Indonesian Journal of Chemical Engineering
Hanum, Farrah Fadhillah
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Education Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Medicine & Pharmacology Other

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Optimalisasi Mutu Batubara Indonesia: Kajian Metode dan Potensi dalam Peningkatan Nilai Kalor Batubara Febriani, Annisa Vada; Hanum, Farrah Fadhillah; Kuncara, Jaka; Setyawan, Martomo
Eksergi Vol 21, No 2 (2024)
Publisher : Prodi Teknik Kimia, Fakultas Teknologi Industri, UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/e.v21i2.11761

Abstract

Nilai kalori batubara sangat penting bagi batubara itu sendiri. Selain berpengaruh pada proses pembakaran, nilai kalori juga menunjukkan kandungan energi yang terkandung dalam batubara. Nilai kalori batubara dipengaruhi oleh beberapa parameter diantaranya ialah kelembapan, kadar abu, zat terbang, karbon tetap dan total sulfur. Namun 40% cadangan batubara di Indonesia masih kualitas rendah. Hal ini menunjukan perlu adanya teknologi peningkatan nilai kalori yang sesuai, dengan tujuan batubara kualitas rendah ini dapat digunakan secara maksimal serta mengurangi emissi CO2 yang dikeluarkan selama proses pembakaran di PLTU. Teknologi pengeringan batubara menjadi salah satu teknologi peningkatan nilai kalori batubara, dengan konsep pengurangan kadar air yang dipengaruhi oleh suhu dan tekanan. Teknologi ini terbagi menjadi empat kategori yaitu mekanis, evaporasi, non-evaporasi dan pirolisis. Sesuai dengan program hilirisasi kementrian ESDM tentang pemanfaatan batubara, teknologi yang dikembangkan dalam proses upgrading  batubara adalah teknologi UBC (Upgrading Brown Coal) dan teknologi CDB (coal dry briquette). Selain itu campuran batubara kualitas rendah dengan biomassa juga dimanfaatkan menjadi bahan bakar pembangkit listrik atau sering disebut co-firring. Baik diaplikasikan langsung maupun dibentuk menjadi briket. Program ini dijalankan untuk mendorong Program NZE pemerintah yang berkomitmen untuk mencapai nol emisi CO2 di tahun 2050. 
Mechanical Characteristics of Epoxy Composite With Rice Husk Charcoal Filling Material Maryudi, Maryudi; Hanum, Farrah Fadhillah; Loundi Vidinda , Oktaza; Dwi Anto , Arif
Indonesian Journal of Chemical Engineering Vol. 1 No. 1 (2023)
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26555/ijce.v1i1.457

Abstract

Advancements in science and innovation in the modern world have led to a growing demand for materials in the production of goods. The utilization of materials in the manufacturing process has been reduced. This is due to the heaviness, costliness, susceptibility to corrosion, and complex assembly systems of metal materials compared to natural fibers. One of the materials currently under development is composites. Composites are a mixture of at least two materials that vary in shape, chemical structure, and are non-disintegrating. The aim of this study is to explore the fabrication and influence of rice husk volume fraction in epoxy composites, as well as to test their tensile strength and composite characteristics. The methodology involves preparing the raw materials (rice husk charcoal, epoxy resin, epoxy hardener, and silicon spray), rice husk charcoal preparation, epoxy production from resin and epoxy hardener, and composite manufacturing with volume fractions of 10%, 20%, and 30% following ASTM D-638 standards. The testing of composite characteristics through tensile tests yields varying tensile strengths. The highest tensile strength is found in composites with a volume fraction of 10%, while the lowest tensile strength is found in composites with a volume fraction of 30%.
Study of Ethylene 1-Hexene Addition on Elongation, Tensile Strength and Cling Values of Stretch Wrap Plastics Helmi Mustafa, Yoga Nawaki; Hanum, Farrah Fadhillah; Rahayu, Aster; Febriani, Annisa Vada
Indonesian Journal of Chemical Engineering Vol. 2 No. 1 (2024)
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26555/ijce.v2i1.693

Abstract

Stretch wrap plastic is a very important packaging material on a variety of scales. It provides flexibility, strength, and transparency that make it indispensable for packaging goods efficiently. This research aims to investigate the effect of stretch wrap plastic thickness on its mechanical properties and analyze the impact of ethylene 1-hexene addition on these properties. The research was conducted using stretch wrap plastic samples made from linear low-density polyethylene (LLDPE) with varying thickness and percentage of ethylene 1-hexene addition. The test method involved elongation, tensile strength, and cling testing using a Universal Testing Machine (UTM). The results showed that the thickness of stretch wrap plastic affects its mechanical properties. The thicker the plastic, the higher the elongation and tensile strength values, while the stickiness tends to decrease.  The optimal thickness of stretch wrap plastic is 20 µm. The addition of ethylene 1-hexene also has a positive effect on the elongation and tensile strength properties, with the optimal percentage of addition at 55% with respect to components such as density and melt index
The Comparison Effects of NaOH and KOH as Solvents for Silica Extraction from Two Different Coal Fly Ashes Hanum, Farrah Fadhillah; Rahayu, Aster; Hapsauqi, Iqbal
Indonesian Journal of Chemical Research Vol 10 No 1 (2022): Edition for May 2022
Publisher : Jurusan Kimia, Fakultas Sains dan Teknologi, Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/ijcr.2022.10-far

Abstract

One of the environmental problems is the waste from the coal combustion process from coal power plants or other industries that use coal as an energy source. The combustion process produces coal fly ash, which will accumulate in the environment. Subsequently, much research about the utilization of coal fly ash has been developed. Silica extraction from coal fly ash is one of the methods that can be used to utilize coal fly ash. This study carried out silica extraction using the Direct Alkaline Leaching (DAL) method. The coal ash was contacted with alkaline solvents (KOH and NaOH) with the variations of concentrations and the leaching time. The leaching solution filtrate will be precipitated with the addition of HCl. The characteristics of this silica from CFA and CFA B were analyzed by using Scanning Electron Microscopy (SEM). Based on the results, it could be known that each of the coal fly ashes has different results for both alkaline solvents. CFA A has relatively less silica extraction results in both types of solvents. Meanwhile, CFA B gave higher silica extraction results with coal fly ash and solvent contact time for one hour.
Quality analysis of coffee waste compost with the addition of cassava tapai local microorganism (LMO) bioactivator Sukmawati, Fitria Nugraheni; Irna, Afifah; Pramudya, Yudhi; Sukarji, Sukarji; Pamungkas, Saktiyono Sigit Tri; Rahmat, Ali; Rozaki, Zuhud; Hanum, Farrah Fadhillah
Applied Research in Science and Technology Vol. 3 No. 2 (2023): Applied Research in Science and Technology
Publisher : Research and Social Study Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33292/areste.v3i2.46

Abstract

Coffee waste contains a large amount of nutrients, making it a potential raw material for compost fertilizer. The nutrients contained in coffee waste include N, P, K, Mg, and Ca. Utilization of coffee waste as compost requires bioactivators to accelerate the decomposition process. This study aims to determine the difference in compost quality from coffee waste by using bioactivators in the form of local microorganisms (LMO) of cassava tapai. This study was conducted from April to May 2023 at the greenhouse of LPP Polytechnic Yogyakarta, consisting of two stages: making the LMO and making the compost. Cassava tapai LMO was prepared as a treatment for composting coffee waste. Each treatment was repeated three times. After that, the fermentation results in the form of compost were tested, then the results were compared with the standards of the Decree of the Minister of Agriculture No. 261/KPTS/SR.310/M/4/2019 on the minimum technical requirements for organic fertilizers, biological fertilizers, and soil conditioners. The results reveal that the provision of cassava tapai LMO bioactivator affected the quality of coffee waste compost produced. The quality of composts produced from control, cassava tapai LMO of 90 ml, and EM-4 treatment does not meet the standards of the Decree of the Minister of Agriculture in the parameter of chemical properties, namely the C/N ratio. The quality of compost produced from cassava tapai LMO of 120 ml meets the standards of the Decree of the Minister of Agriculture and SNI 2004 in all parameters of physical properties, chemical properties, and nutrient content.
Intervensi Pendidikan Kesehatan tentang Keunggulan Nilai Gizi Kakao Fermentasi Rokhmayanti, Rokhmayanti; Utami, Budi Barata Kusuma; Hanum, Farrah Fadhillah; Martini, Titim; Arifah, Zulia; Azizah, Cahya Umi
Jurnal Peduli Masyarakat Vol 6 No 1 (2024): Jurnal Peduli Masyarakat: Maret 2024
Publisher : Global Health Science Group

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37287/jpm.v6i1.2869

Abstract

Fermentasi kakao menjadi salah satu makanan fungsional yang memiliki banyak kandungan gizi yang baik untuk kesehatan. Biji kakao hasil fermentasi memiliki kadar protein yang lebih tinggi daripada biji kakao tanpa fermentasi. Namun, masih banyak masyarakat yang masih belum mengetahui tentang kandungan gizi dari kakao fermentasi salah satunya adalah Kelompok Wanita Tani (KWT) di Dusun Banjardowo, Desa Gedangrejo, Kapanewon Karangmojo Kabupaten Gunungkidul. Tujuan dari pengabdian ini adalah meningkatkan pengetahuan KWT mengenai nilai gizi dan manfaat fermentasi kakao. Pengabdian ini diikuti oleh KWT yang berjumlah 15 orang dengan metode penyuluhan secara tatap muka menggunakan media power point, dan pada awal dan akhir kegiatan diberikan pengukuran pengetahuan menggunakan kuesioner pre dan post test. Hasil dari pengabdian yang dilakukan pada KWT ini adalah terdapat peningkatan pengetahuan secara signifikan sebelum dan sesudah dilakukannya penyuluhan (p<0,05). Selain itu, terjadi perubahan kategori pengetahuan peserta dari mayoritas berada pada kategori kurang (73,33%) menjadi mayoritas berada pada kategori baik (86,67%) setelah dilakukan penyuluhan.
Development of Aloe Vera-Based Desulfurization Method to Improve The Quality of Sumatra's Coal Hapsauqi, Iqbal; Desfitri , Erda Rahmilaila; Hanum, Farrah Fadhillah; Setyawan, Martomo
Sains Natural: Journal of Biology and Chemistry Vol. 14 No. 2 (2024): Sains Natural
Publisher : Universitas Nusa Bangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31938/jsn.v14i2.699

Abstract

Coal is Indonesia's primary energy source, contributing approximately 65.5% to the total electricity production in 2021. The high sulfur gas emissions during the coal combustion have negatively impacted air quality and the surrounding ecosystem. Consequently, researchers have conducted numerous studies on reducing sulfur content in coal. This study specifically explores the impact of adding Aloe vera extract in desulfurization. Aloe vera contains saponin, a surfactant-like compound that can alter the surface properties of minerals in coal, making sulfur particles easier to eliminate. In the experiment, aloe vera extract was applied to coal with variations of 100, 200, and 300 mL. The mixture was stirred using a magnetic stirrer at 100 rpm for one hour. Subsequently, the coal was separated and analyzed for sulfur content, calorific value, and ash content. The research results indicated that adding Aloe vera extract significantly reduces sulfur content in coal, simultaneously improving the overall quality of the coal with a sulfur reduction ranging from 7% to 22%. Moreover, the process reduced the ash content in the coal. By harnessing the potential of Aloe vera as a natural desulfurizing agent, this study presents an innovative and environmentally friendly solution to mitigate hazardous gas emissions during coal combustion.
Optimization and Characterization Cellulose Content of Cocoa Pod Husk from Cocoa Fermentation Center in Gunung Kidul Regency, Indonesia Through The Extraction Process Amrillah, Nafira Alfi Zaini; Hanum, Farrah Fadhillah; Rahayu, Aster; BalqisViratu Hapsari, Alliya; Nuraini
Sains Natural: Journal of Biology and Chemistry Vol. 14 No. 2 (2024): Sains Natural
Publisher : Universitas Nusa Bangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31938/jsn.v14i2.703

Abstract

Lignocellulose comprises three biopolymers, cellulose, hemicellulose, and lignin that form a complex composite structure. Cellulose, as a biopolymer possesses notable properties including biocompatibility, biodegradability and economic viability. Gunung Kidul, one of the areas in Indonesia, precisely in Yogyakarta, where the population is known to live as cocoa farmers, so the potential for cocoa husks production is quite large. One way to obtain cellulose is by extracting the cacao husks from Gunung Kidul Cocoa Fermentation Center. Cellulose extraction were carried out through two main stages: alkaline delignification and bleaching. Based on the FTIR characterization results, the cocoa skins from Gunung Kidul Fermentation Center have the potential to separate cellulose from lignin and hemicellulose, which is shown in the presence of the function groups O-H, CH2, and C=O. So, the study aimed to get the optimum condition of the cellulose through several variations of the alkaline (NaOH and KOH), and the type of bleaching reagent (NaOCl and H2O2). The concentration of H2O2 (10%, 20%, 30% and 40%). The potential for cellulose can be developed and modified into nanocellulose in the future perspective.
Beach Sand-derived Mesoporous Silica by Hydrothermal Process for Hydrocracking Waste Coconut Oil to Biofuel Salamah, Siti; Hanum, Farrah Fadhillah; Trisunaryati, Wega; Kartini, Indriana; Purwono, Suryo
JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 8, No 3 (2023): JKPK (Jurnal Kimia dan Pendidikan Kimia)
Publisher : Program Studi Pendidikan Kimia FKIP Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/jkpk.v8i3.76598

Abstract

Hydrocracking, a key process for converting waste coconut oil into biofuel, requires efficient catalysts. This study investigates the synthesis of mesoporous silica catalysts using a hydrothermal process. Dodecyl amine, sourced from beach sand, serves as a template. The hydrothermal synthesis involved durations (12, 15, 18, 21, and 24 hours) and dodecyl amine concentrations (0.25 M, 0.5 M, 0.1 M), conducted at 40 °C for 30 minutes. The synthesized catalysts were then characterized for their surface area, pore volume, and diameter. Among the synthesized samples, those treated for 15 hours displayed optimal total acidity at 0.88 mmol/g. The catalysts synthesized with a dodecyl amine concentration of 0.025 M exhibited superior characteristics, including a specific surface area of 233 m²/g, a pore volume of 0.47 cc/g, and an average pore diameter of 2.10 nm. These findings underscore the efficacy of mesoporous silica catalysts in hydrocracking, particularly in converting large hydrocarbon molecules into smaller, more valuable biofuel molecules. Comparative analysis with similar research highlights the significance of these findings in the field of sustainable energy. The optimal catalyst conditions yielded a liquid fraction of over 70% for 0.25 M dodecyl amine. This efficiency in converting waste coconut oil into biofuel signifies the potential of mesoporous silica catalysts in advancing environmentally friendly energy sources. This research contributes to the growing knowledge of renewable energy, offering promising avenues for developing sustainable and eco-friendly energy solutions.
Review: Analisis Potensi dan Tantangan Biomassa Sebagai Bahan Bakar pada PLTU dan PLTBm Febriani, Annisa Vada; Hanum, Farrah Fadhillah; Rahayu, Aster
Prosiding Semnastek PROSIDING SEMNASTEK 2024
Publisher : Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Berdasarkan Peraturan Presiden nomor 112 tahun 2022 tentang percepatan pengembangan energi baru terbarukan (EBT) untuk penyediaan tenaga Listrik, biomassa menjadi salah satu sumber EBT yang memiliki potensi yang besar untuk dimanfaatkan. Salah satunya yaitu sebagai bahan bakar Pembangkit Listrik Tenaga Biomassa (PLTBm) dan implementasi co-firring di PLTU. Hal ini selaras dengan komitmen Indonesia untuk mencapai 23 % EBT pada tahun 2025. Pada tahun 2023 penurunan emisi sebanyak 1,05 juta ton CO2 terjadi akibat implementasi co-firring di 43 PLTU dengan mengkonsumsi 1 jt ton/tahun biomassa. Sedangkan pembangunan PLTBm terus meningkat setiap tahunnya yang tersebar di bebagai daerah. Berdasakan data dari Dewan Energi Nasional Republik Indonesia Selama kurun waktu lima tahun (2018 – 2022), pembangunan PLTBm tumbuh rata-rata 14% per tahun. Namun masih banyak tantangan yang dihadapai dalam pemanfaatan biomassa sebagai EBT, baik dari aspek pendanaan, investasi, lingkungan maupun ketersediaan bahan baku.Kata kunci: Biomassa, PLTBm, co-firring, EBT
Co-Authors Adestu, Zakiyya Salwa Ali Rahmat Amini, Mar’atu Roisa Amrillah, Nafira Alfi Zaini Arifah, Zulia Azizah, Cahya Umi BalqisViratu Hapsari, Alliya Budi Barata Kusuma Utami Desfitri , Erda Rahmilaila Dwi Anto , Arif Eka Suharto, Totok Fatmala, Eva Febriani, Annisa Vada Firda Mahira Alfiata Chusna Fitria Nugraheni Sukmawati, Fitria Nugraheni Hapsauqi, Iqbal Helmi Mustafa, Yoga Nawaki Iin Narwanti Imran Indriana Kartini Irna, Afifah Khairi, Amalya Nurul Kuncara, Jaka Lestari, Rimadina Sukmasuci Loundi Vidinda , Oktaza Martini, Titim Martomo Setyawan Maryudi Maryudi Muhammad, Azrian Makmum Nuraini Pramudya, Yudhi Putra, Gea Permana Antara Rahayu, Aster Rahayu, Dheka Esti Rahmadani, Nur Izati Rifai Sanuhung, Ahmad Rokhmayanti, Rokhmayanti Rozaki, Zuhud Rusdianto Rusdianto, Rusdianto Sabila, Liya Yusrina Saktiyono Sigit Tri Pamungkas, Saktiyono Sigit Tri Setya Wardhana, Budi Siti Jamilatun Siti Salamah Sukarji, Sukarji Suryo Purwono Tusrianto, Tusrianto Utami, Budi Barata Kusuma Vada Febriani, Annisa Wardhana, Budi Setya Wega Trisunaryati, Wega Zahrul Mufrodi, Zahrul