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All Journal Jurnal Sains dan Teknologi Nuklir Indonesia (Indonesian Journal of Nuclear Science and Technology) Simetris Jurnal Dampak Jurnal Sains & Teknologi Lingkungan Jurnal Purifikasi International Journal of Community Service Learning Jurnal Teknik Lingkungan Budapest International Research and Critics Institute-Journal (BIRCI-Journal): Humanities and Social Sciences Devotion: Journal of Research and Community Service Journal of Social Research Journal Of World Science INDONESIAN JOURNAL OF URBAN AND ENVIRONMENTAL TECHNOLOGY Eduvest - Journal of Universal Studies Bulletin of Chemical Reaction Engineering & Catalysis JURNAL REKAYASA KIMIA & LINGKUNGAN Journal of Engineering and Technological Sciences
Katharina Oginawati
Fakultas Teknik Sipil dan Lingkungan, ITB Ganesha 10, Bandung, Indonesia
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Analisis Potensi Ledakan dan Kebakaran Primary Reformer sebagai Unit Proses Produksi Amonia di PT. X Lestari, Resti Ayu; Oginawati, Katharina
Jurnal Rekayasa Kimia & Lingkungan Vol 11, No 2 (2016): Jurnal Rekayasa Kimia & Lingkungan
Publisher : Chemical Engineering Department, Syiah Kuala University, Banda Aceh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23955/rkl.v11i2.5049

Abstract

Peningkatan industri pupuk di dunia berimplikasi pada peningkatan jumlah industri amonia. Amonia memegang peranan penting pada proses produksi pupuk dalam hal penyediaan nitrogen. Proses pembuatan amonia melibatkan bahan baku berupa gas alam yang bersifat flammable dengan temperatur dan tekanan yang tinggi dalam setiap tahapan prosesnya. Primary reformer merupakan salah satu peralatan proses dalam produksi amonia dengan temperatur dan tekanan paling tinggi serta paling berisiko mengalami kegagalan yang dapat mengakibatkan terjadinya kebakaran/ledakan. Primary reformer berperan sebagai salah satu tahapan pemurnian gas alam dengan hasil berupa karbon monoksida. Identifikasi bahaya pada unit primary reformer dilakukan dengan menggunakan metode Fault Tree Analysis (FTA). Hasil analisis FTA menghasilkan bahwa sumber bahaya dari ledakan primary reformer dapat ditinjau dari faktor teknis dan faktor non teknis. Faktor non teknis menyumbang 74% dari penyebab terjadinya ledakan/kebakaran pada primary reformer. Hasil analisis risiko ledakan/kebakaran pada primary reformer dilakukan dengan menggunakan Dows Fire and Explosion Index dengan hasil radius area dampak adalah 51 meter. Nilai kerugian finansial mencapai US$ 23.640.285 dengan kerugian hari kerja minimal adalah 138 hari. Perangkat lunak Arial Location of Hazardous Atmospheres menghasilkan radius ledakan dengan dampak terkecil yaitu dapat memecahkan kaca jendela/pintu (0,5 psi) adalah 73 m dari primary reformer. Radius ledakan dengan kekuatan ledakan 1 psi (meruntuhkan rumah/perkantoran) adalah 48 m dari primary reformer.
Soda-Anthraquinone-Catalyzed Delignification of Coconut Husk Waste Ahmad, Eka Fitriani; Lestari, Puji; Oginawati, Katharina; Yulizar, Yoki; Sianturi, Julinton; Munir, Muhammad Miftahul; Adawiah, Adawiah
Bulletin of Chemical Reaction Engineering & Catalysis 2026: BCREC Volume 21 Issue 1 Year 2026 (April 2026)
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.20537

Abstract

This study investigates the role of anthraquinone (AQ) in decomposing coconut husk waste, specifically collected from Banten, to produce pure α-cellulose pulp. The process used sodium hydroxide (NaOH) at 10%, 15%, and 20% concentrations, with 0.1 g of AQ added as a catalyst, and a waste-to-liquid ratio of 1:8 throughout. The goal is to accelerate lignin degradation while protecting cellulose in the material, thereby yielding higher-quality pulp. The Banten coconut husk analysis showed an α-cellulose content of 30.38%. Higher NaOH concentrations reduced pulp yield but increased lignin removal, indicated by lower kappa numbers. AQ addition enhanced lignin removal and preserved cellulose compared to the absence of AQ. The optimal outcome was achieved with 15% NaOH and 0.1 g AQ, balancing lignin removal and cellulose preservation. These findings indicate that anthraquinone can support sustainable pulp production from agricultural waste. Copyright © 2026 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).
The Presence of Organochlorine and Organophosphate Pesticide Residue in Groundwater at the Upper Citarum Watershed Deviyani, Deviyani; Oginawati, Katharina; Salami, Indah Rahmatiah Siti
Journal of Engineering and Technological Sciences Vol. 58 No. 2 (2026): Vol. 58 No. 2 (2026): April
Publisher : Directorate for Research and Community Services, Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/j.eng.technol.sci.2026.58.2.2

Abstract

Chemical residue, particularly pesticide from agricultural activities at the Citarum Upper Watershed, is considered an evolving contaminant due to the presence in groundwater samples. Therefore, this qualitative study aims to identify four pesticide residues from organophosphate (OPP) and organochlorine (OCP). Groundwater grab sampling method was applied to collect 31 samples from each location. Extraction was then carried out using the QuEChER preparation technique, followed by gas chromatography-mass spectrometry (GC-MS) analysis. The results showed that Dichlorodiphenyltrichloroethane (DDT) had the highest concentration at 0.1062 mg/L. Chlorpyrifos had the highest detection above the limit of detection (LOD) in 13 groundwater samples, with concentrations ranging from 0.0116 to 0.2469 mg/L. Lindane and diazinon were also detected, with maximum concentrations of 0.03209 mg/L and 0.0698 mg/L, respectively. Risk assessment was further carried out to determine the chronic and acute Hazard Quotient (HQ) for all residue. Dichlorodiphenyltrichloroethane and lindane scored > 1 at maximum concentration in adults, while diazinon was at an acceptable level for all scenarios. However, when children-specific parameters were applied, chlorpyrifos demonstrated HQ>1, suggesting additional health risk for children in the area. Immediate studies of pesticide exposure on public health, specifically in children from the site, are essential due to the critical stages in life.
Co-Authors Abdurachman, Ardestya Verta Abrori, Reiza Fandrio adawiah adawiah, adawiah Ahmad, Eka Fitriani Amin, Fauziah ANNISA MAULIDYA Ariva, Lini Arsyi Nur Fithri Auliailahi, Annisa Rizki Badrun Ahmad Buftheim, Sonia Dara Fitriana Deviyani, Deviyani Diah Dwiana L Doharta, Prastita Dwi Aris Agung Nugrahaningsih Dwito Indrawan Endah Damastuti Fahimah, Nurul Farid Alfalaki Hamid Fitriana, Dara Gunrady, Rudy Handayani, Elya Hilda Hemas, Caroline Kartika Imtiyaz Olaf Jatmy Imtiyaz Olaf Jatmy Indrawan, Dwito Ismawati, Yuyun Lestari, Resti Ayu Lini Ariva Listya Chandra Kirana Maulidiniawati, Nurika Miftahul Munir, Miftahul Minoru Yoneda Muhayatun Santoso Muhayatun Santoso Muhayatun Santoso Natalia Adventini Nur Aisyah Yuniar Romantis Nur Fithri, Arsyi Nurika Maulidiniawati Nurmala Karima, Afifah Prananditya, Rahardrian Priana Sudjono PUJI LESTARI Qiara Fildzah Yanetta Rahardrian Prananditya Rahman, Intan Nur’azizah Refnilda Fadhilah Regia, Rinda Andhita Reiza Fandrio Abrori Resti Ayu Lestari Salami, Indah Rahmatiah Siti Santoso, Muhayatun Sari, Kartika Rahma Sharnella Janet Yapfrine Sharnella Janet Yapfrine Sianturi, Julinton Sonia Buftheim Sriharyuniwati, Iwuk Suharyanto Suphia Rahmawati Syukria Kurniawati Widya Dwi Ariyani Woro Yatu Niken S Yoki Yulizar Yulia Ningsih Yuyun Ismawati