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All Journal Jurnal Ilmu Lingkungan Journal of Engineering and Technological Sciences REKAYASA IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Sriwijaya International Seminar on Energy-Environmental Science and Technology Science and Technology Indonesia AKSIOLOGIYA : Jurnal Pengabdian Kepada Masyarakat Al-Kimia IJEMS (Indonesian Journal of Environmental Management and Sustainability) Journal of Humanities and Social Studies Jurnal Teknik Kimia Science Midwifery Journal of Applied Materials and Technology Jurnal Pengabdian Kolaborasi dan Inovasi IPTEKS Bulletin of Chemical Reaction Engineering & Catalysis
Fitri Hadiah
Jurusan Teknik Kimia, Fakultas Teknik, Universitas Sriwijaya
Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Dentistry Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mechanical Engineering Nursing Physics Public Health Social Sciences Veterinary

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Catalytic Transfer-Hydrogenation of Fatty Oil Fitri Hadiah
Sriwijaya International Seminar on Energy-Environmental Science and Technology Vol 1, No 1 (2014)
Publisher : Sriwijaya International Seminar on Energy-Environmental Science and Technology

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

Abstract

Polyunsaturated fatty acids are the main cause of the poor thermal and oxidative stabilities of fatty oils as well as biodiesels. The conversion of polyunsaturated to monounsaturated fatty acid moieties are normally carried out via hydrogenation. The most conventional hydrogenation process uses gaseous hydrogen at relatively high temperature and pressure in the presence of metal catalysts. Catalytic-transfer hydrogenation is an alternative method for oil hydrogenation which does not require the presence of hydrogen and can be carried out at atmospheric pressure. This paper describes the catalytic transfer-hydrogenation of kapok seed oil (Ceiba pentandra) and candlenut oil (Aleurites moluccana) by potassium formate (KOOCH) solutions using the following catalysts: Ag–Cu2O, Ag–Cu2O/Pumice, Ag–Cu2O–Pd/Pumice, and Pd/C 5%. None of the catalysts were found effective and kapok seed oil hydrogenated using 5%-Pd/C catalyst turned into gel, most probably due to the polymerization reactions of sterculic and malvalic acid
Produksi Asap Cair dari Limbah Kopi di Desa Karang Tanding Kecamatan Jarai Kabupaten Lahat Bazlina Dawami Afrah; M Ihsan Riady; Tuti Indah Sari; Fitri Hadiah; Novia Sumardi; Siti Istiani Pratiwi; Ahmad Julianto; Agung Dwi Aryansyah
Aksiologiya: Jurnal Pengabdian Kepada Masyarakat Vol 7 No 3 (2023): Agustus
Publisher : Universitas Muhammadiyah Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30651/aks.v7i3.9101

Abstract

Komoditas kopi merupakan salah satu komoditas andalan yang memberikan kontribusi besar bagi pendapatan nasional. Tanaman kopi selain menghasilkan produk utama berupa biji kopi juga menghasilkan limbah berupa batang dan kulit buah kopi yang memiliki potensi bahan untuk pembuatan asap cair untuk pengganti pestisida sintetik dan penggumpal lateks. Pelaksanaan kegiatan edukasi dan pelatihan pemanfaatan limbah tanaman kopi menjadi asap cair sebagai bahan pestisida sebagai bentuk pengabdian kepada masyarakat Desa Karang Tanding menjadi alternatif untuk meningkatkan pemahaman masyarakat tentang produk ekonomis yang berasal dari limbah tanaman kopi. Kegiatan ini disambut oleh 1.146 orang yang mayoritas mata pencahariannya di sektor perkebunan. Pemanfaatan limbah kopi melibatkan masyarakat dan mahasiswa termasuk penyiapan materi dan pengolahan lanjutan dengan protokol COVID-19 yang direkomendasikan. Kegiatan selanjutnya merupakan sosialisasi penggunaan alat yang diikuti ± 20 masyarakat dengan harapan masyarakat dapat mengedukasi masyarakat lain dan mengaplikasikan langsung pada perkebunan desa Karang Tanding seluas ± 400 Ha. Produk asap cair yang dihasilkan dengan pemurnian asap cair dapat menghasilkan peptisida alami yang aman bagi sektor perkebunan.
Computational Fluid Dynamics Modeling of Fermentation Reactions in Bioethanol Fermentor: A Review Wijaya, Ali Satria; Novia, Novia; Hadiah, Fitri
Journal of Applied Materials and Technology Vol. 4 No. 2 (2023): March 2023
Publisher : Faculty of Engineering Universitas Riau and Applied Materials and Technology Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/Jamt.4.2.79-89

Abstract

Bioethanol is a renewable energy source that can replace fossil fuels. The advantages in terms of economy and its impact on the environment make bioethanol was chosen as a biofuel. Bioethanol can be produced from various types of biomasses with the help of microorganisms, namely yeast, for the fermentation process. In manufacturing, factors including temperature, concentration, pH, fermentation time, and stirring speed influence the fermentation process. Computational Fluid dynamics (CFD) package can be applied to observe the procedures in a fermenter. CFD simulates fluid movement, energy transport, chemical reactions, and other phenomena with the aim of clarifying their impact on the overall effectiveness of bioethanol production. In this journal, a review of the fermentation process with CFD modeling was made to look at the parameters and phenomena during the bioethanol production process. The analysis commences with an examination of the processes involved in bioethanol production and underscores the crucial role of fermentation in transforming renewable resources into bioethanol. Subsequently, it delves into the foundational principles of CFD and how they are incorporated into the modeling of bioethanol fermenters. Furthermore, the review highlights key advancements and innovations in CFD modeling techniques, such as multiphase models, turbulence modeling, and coupled simulations, aiming to capture the intricate interplay of physical and biological phenomena within fermentors. Insights into the impact of operating conditions, reactor design, and microbial behavior on bioethanol yield and quality are discussed, providing a comprehensive understanding of the complex system dynamics.
Kinetics of Homogeneous Reaction of Potassium Methoxide Based on K2CO3 Catalyst in Transesterification of RBDPO to Biodiesel Salam, Yosirham Abdu; Komariah, Leily Nurul; Hadiah, Fitri; Arita, Susila
Science and Technology Indonesia Vol. 9 No. 1 (2024): January
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/sti.2024.9.1.28-35

Abstract

Biodiesel production is generally catalyzed by potassium methylate or sodium methylate catalysts based on KOH and NaOH and these catalysts are still imported. The search for a cheap and effective catalyst continues to be carried out by researchers. One of the catalyst support materials currently in use involves impregnating K2CO3 with various substances, resulting in a heterogeneous catalyst. In this study, it was tried to use K2CO3 dissolved in methanol to produce a homogeneous potassium methylate catalyst. Potassium methylate-based homogeneous catalyst K2CO3-methanol is proven to have a very high function in the transesterification reaction of Refined Bleached Deodorized Palm Oil (RBDPO) into biodiesel, this is evidenced by the use of a catalyst percentage of 2% w and 30% w methanol to the weight of RBDPO resulting in an acid content in biodiesel of only 0.12% and a total glycerol of 0.124% in reaction time 3 hours, with the purity of the methyl ester in biodiesel reaching 98.80%. Meanwhile, for the calculation of homogeneous reaction kinetics, a reaction rate equation is produced where the order of the RBDPO transesterification reaction is order 2 (two) and the reaction rate constant is 0.0044.
Conversion of Isopropanol to Diisopropyl Ether over Cobalt Phosphate Modified Natural Zeolite Catalyst Hasanudin, Hasanudin; Asri, Wan Ryan; Rahmawati, Rahmawati; Riyanti, Fahma; Maryana, Roni; Al Muttaqii, Muhammad; Rinaldi, Nino; Hadiah, Fitri; Novia, Novia
Bulletin of Chemical Reaction Engineering & Catalysis 2024: BCREC Volume 19 Issue 2 Year 2024 (August 2024)
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.20144

Abstract

This study aims to produce diisopropyl ether (DIPE) via isopropanol dehydration using cobalt-phosphate-supported natural zeolite catalysts. The catalytic activities of the zeolite/CoO and zeolite/Co(H2PO4)2 were compared. The as-prepared catalysts were assessed using X-ray diffraction (XRD), scanning electron microscopy (SEM) with energy-dispersive X-ray spectroscopy (EDX), Fourier transform infrared (FTIR) spectroscopy, and N2 adsorption-desorption. Surface acidity was determined using the gravimetric method with pyridine as the probe. The results of this study showed that natural zeolite was favorably impregnated by CoO and Co(H2PO4)2 species. The impregnation process affected the textural and acidic features of the catalysts. The zeolite/Co(H2PO4)2 catalyst with a loading of 8 mEq.g-1 exhibited the highest surface acidity of 1.827 mmol.g-1. This catalyst also promoted the highest catalytic activity towards isopropanol dehydration, with an isopropanol conversion of 66.19%, DIPE selectivity, and yield of 46.72% and 34.99%, respectively. The cobalt phosphate species promoted higher catalytic activity for isopropanol dehydration than the CoO species. This study demonstrated the potential of cobalt phosphate-supported natural zeolite catalysts for DIPE production with adequate performance. Copyright © 2024 by Authors, Published by BCREC Publishing Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).
Transesterification Process of Biodiesel with Potassium Glycerolate Catalyst Erisna, Desi; Arita, Susila; Hadiah, Fitri
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 9, No 1 (2024): February 2024
Publisher : IJFAC (Indonesian Journal of Fundamental and Applied Chemistry)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24845/ijfac.v9.i1.1

Abstract

The synthesis of potassium glycerolate catalyst from DES (Deep Eutectic Solvent – K2CO3-glycerol) catalyst was carried out by heating process with various temperatures. The resulting catalyst product was analyzed and the characteristics of the best potassium glycerolate catalyst had conductivity 4482 microsiemens/cm, density 1.4858 g/cm3, Viscosity 121.574 cP, Freezing Point -8 celcius and pH 14. The best temperature in the manufacture of potassium glycerolate catalyst was at 150 celcius Alkaline pH is the main requirement to be a catalyst in the transesterification reaction. The trial results for the conversion of RBDPO to biodiesel with the optimum weight percent ratio of potassium glycerolate catalyst to RBDPO were 3.5%w, methanol 30%w, reaction temperature 65 celcius, reaction time 4 hours resulted in total glycerol content in biodiesel 0.2285%, acid value 0.15%, density 0.8705 gr/cm3, viscosity 5.22 Cst, conversion 96.77% and 97.81% methyl ester content and all of these parameters all meet the biodiesel standards set by SNI-7182: 2015. Keywords: Catalyst Characteristics, Potassium Glycerolate, Transesterification, Biodiesel
Refining Used Cooking Oil Using Tapioca Starch (Manihot esculenta) and Lime (Citrus aurantifolia) Hadiah, Fitri; Alisya, Rona; Fitriyani, Della
Rekayasa Vol 17, No 3: Desember, 2024
Publisher : Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/rekayasa.v17i3.27560

Abstract

Used cooking oil is cooking oil that has been used multiple times, leading to decreased in quality. This decline in quality occurs due to the degradation of the cooking oil's components. The community, especially traders, prefers to use used cooking oil or reuse cooking oil multiple times because it is more profitable than using fresh cooking oil. Using this used cooking oil can cause cholesterol issues in the body. This research aims to refine used cooking oil using carbon-rich tapioca starch and antioxidant-rich lime which is expected to restore the quality of used cooking oil. This research uses the experimental method by varying the mass of the adsorbent, specifically the ratio of tapioca starch mass at 5%, 10%, and 15%, and the lime mass ratio at 5%, 10%, 15%, and 20%. The used cooking oil refining process was conducted by mixing used cooking oil and adsorbents for one hour at a speed of 200 rpm and then allowed to stand for 2 days. This research aims to study the effect of the amount of tapioca starch and lime as adsorbents on the viscosity, density, and acid number of refined used cooking oil. The optimal use of adsorbent is 20% tapioca starch and 10% lime, resulting in a density of 0.9760 g/cm³, viscosity of 18.9452, and an acid number of 2.8719 mg KOH/gram oil.
Assessment of Changes in Water Quality of Enim River, Muara Enim, South Sumatera, Indonesia to Determine Environmental Designations Sinaga, Andi Parluhutan; Ibrahim, Eddy; Hadiah, Fitri
Indonesian Journal of Environmental Management and Sustainability Vol. 8 No. 2 (2024): June
Publisher : Magister Program of Material Science, Graduate School of Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/ijems.2024.8.2.63-70

Abstract

Enim river flows within several sub-districts in Muara Enim Regency, including Semendo Darat Laut, Semendo Darat Tengah, Semendo Darat Ulu, Tanjung Agung, Lawang Kidul, and Muara Enim. This study examines changes in the water quality of the Enim River due to domestic wastewater discharges and the presence of the coal mining industry and household industries. Water samples were taken from 4 sampling stations along the Enim River in 2018 and 2023. Data consisted of results of physical, chemical, and microbiological parameters. The status of river water quality was assessed from the pollution index. The results of Enim River surface water quality measurements showed that the parameters of total suspended solids, Dissolved Oxygen, iron (Fe), copper (Cu), oil, and grease concentrations had breached the criteria set for Class II water quality, referring to Government Regulation of the Republic of Indonesia Number 82 of 2001. The results showed that there has been a change in the water quality status of Enim River from 2018 to 2023. The river water pollution index was (1.43-2.47) in 2018 and (1.49-3.85) in 2023 (lightly polluted). Comprehensive water treatment and preventive measures are necessary to manage and mitigate additional pollution in the Enim River.
A Review: Production Process Of Biodiesel Made From Wosten Oil Raw Tanjung, Anggi Anggreini; Rahman, Susila Arita; Hadiah, Fitri
JHSS (JOURNAL OF HUMANITIES AND SOCIAL STUDIES) Vol 8, No 2 (2024): JHSS (Journal of Humanities and Social Studies)
Publisher : UNIVERSITAS PAKUAN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33751/jhss.v4i3.11017

Abstract

The development of biodiesel in Indonesia is increasing judging from consumption and export data to meet energy and fuel needs. The high cost of the biodiesel production process can be overcome by using waste cooking oil as a raw material. The use of waste cooking oil as biodiesel is an environmentally friendly action because it reduces environmental pollution. The method used in writing this article is a literature study by collecting data and information from various journals with the aim of explaining the processing of waste cooking oil into biodiesel. The catalysts used are acid and base catalysts (homogeneous, heterogeneous) and enzyme catalysts. Waste cooking oil can be converted into biodiesel by going through the transesterification stage. Under optimal conditions, used cooking oil as a raw material for biodiesel produces the highest methyl ester content of 98.94% using a heterogeneous base catalyst, namely ATKKS. The final conversion of biodiesel is affected by several parameters such as reaction temperature, reaction time, molar ratio of alcohol to oil, amount of fatty acids, moisture content and catalyst used.
INTEGRASI PEMBUATAN ECO-ENZYME SEBAGAI PESTISIDA DAN PUPUK ORGANIK TERHADAP PERTUMBUHAN TANAMAN DI DESA MUARA PENIMBUNG KABUPATEN OGAN ILIR Hadiah, Fitri; Cundari, Lia; Afrah, Bazlina Dawami; Sari, Tuti Indah; Fitri, Rizza Fadillah; Gayatri, Rianyza; Anggraini, Dwi
Jurnal Pengabdian Kolaborasi dan Inovasi IPTEKS Vol. 3 No. 3 (2025): Juni
Publisher : CV. Alina

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59407/jpki2.v3i3.2348

Abstract

Desa Muara Penimbung terletak di Kecamatan Indralaya Utara, Kabupaten Ogan Ilir, Sumatera Selatan. Mayoritas penduduk di Desa ini merupakan petani. Masyarakat seringkali menghadapi masalah pengelolaan limbah organik dan penggunaan bahan kimia berbahaya untuk pertanian. Solusi ramah lingkungan mengatasi permasalahan ini adalah memanfaatkan sampah organik sebagai bahan baku eco-enzyme. Eco-enzyme merupakan larutan yang berasal dari zat organik kompleks dari proses fermentasi campuran antara limbah organik seperti kulit buah, sayuran, gula merah, dan air. Eco-enzyme dapat dimanfaatkan menjadi pestisida dan pupuk organik. Penggunaan eco-enzyme sebagai pestisida dan pupuk organik mengurangi risiko paparan terhadap bahan kimia berbahaya bagi petani dan lingkungan. Desa Muara Penimbung memiliki potensi besar menghasilkan limbah organik dari perkebunan dan rumah tangga, tetapi kesadaran dan pengetahuan masyarakat dalam pengelolaan sampah organik masih rendah. Tujuan diadakannya kegiatan ini yaitu untuk mengintegrasi pengelolaan eco-enzyme dalam pemanfaatannya mengolah sampah sayur dan buah-buahan menjadi pestisida dan pupuk organik bagi perkebunan di Desa Muara Penimbung. Metode yang digunakan yaitu metode eksperimen. Variabel penelitian yang dilakukan adalah jumlah limbah sayuran dan kulit buah, ragi, dan larutan gula merah dan aquadest, dengan rasio limbah kulit buah dan sayur 7:3. Pengujian secara langsung menunjukkan bahwa penggunaan pupuk meningkatkan pertumbuhan tanaman cabai hingga 7 cm pada hari ke-3. Penggunaan pestisida memerlukan evaluasi lebih lanjut karena serangga mati dalam waktu lama setelah penyemprotan. Program ini membantu mengintegrasikan permasalahan sampah perkebunan seperti sayur dan kulit buah di Desa Muara Penimbung. Respons dari masyarakat positif dan tertarik untuk melanjutkan program serupa di masa depan.
Co-Authors Agung Dwi Aryansyah Ahmad Julianto Al Azhar Al Muttaqii, Muhammad Alisya, Rona Aryansyah, Agung Dwi Asri, Wan Ryan Bazlina Dawami Afrah Cundari, Lia Dwi Anggraini Eddy Ibrahim Erisna, Desi Fahma Riyanti Fitri, Rizza Fadillah Fitriyani, Della Gayatri, Rianyza Hasanudin Hasanudin Heryanto Heryanto Julianto, Ahmad Leily Nurul Komariah Maryana, Roni Muhammad Rico Ghozali Muhammad Rifqi Muhammad Said Nakashima, Mhika Nino Rinaldi Novi Anggraini Novia Novia Novia Sumardi Novia Sumardi Pratiwi, Siti Istiani R. M. Yusuf Agustria Rahman, Susila Arita Rahmawati, Rahmawati Riady, M Ihsan Riady, M.I. Rika Damayanti Salam, Yosirham Abdu Salsabilla A Yani Sinaga, Andi Parluhutan Siti Istiani Pratiwi Susila Arita Tanjung, Anggi Anggreini Tine Aprianti Tirtasakti Nugroho Tri Meliasari Tuti Emilia Agustina Tuti Indah Sari Tuti Indah Sari, Tuti Indah Tuty E. Agustina Tuty Emilia Agustina Wijaya, Ali Satria Yadi Utama Yani, Septi Nanda