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Alwi Gery Agustan Siregar

Observed names: A E Siregar, A G A Siregar, A G Siregar, A. G. Siregar, A.G. Siregar, A.G.A. Siregar, Alwi Gery Siregar, Alwi Siregar, Siregar, Alwi Gery Agustan
ORCID: 0000-0003-2814-7365
Observed ORCID: 0000-0003-2814-7365
OpenAlex ID: A5010762003
Synthesis and Characterization of Sodium Silicate Produced from Corncobs as a Heterogeneous Catalyst in Biodiesel Production
2020 · Alwi Gery Agustan Siregar, Renita Manurung, et al. · Indonesian Journal of Chemistry · 20
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Preparation and characterization of lithium, sodium, and potassium silicate from palm leaf as a potential solid base catalyst in developed biodiesel production
2023 · Renita Manurung, Rosdanelli Hasibuan, et al. · Case Studies in Chemical and Environmental Engineering · 19
Deep Eutectic Solvents Based Choline Chloride for Enzymatic Biodiesel Production from Degumming Palm Oil
2020 · R. Manurung, Taslim, et al. · Asian Journal of Chemistry · 12
Ekstraksi senyawa tanin dalam ampas kopi sebagai sumber daya tanin terbarukan
2024 · Rif'ati Suhaila, Zakiatul Husna, et al. · Journal of Agrosociology and Sustainability · 9
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Triacetin production using SiO2-H3PO4 catalysts derived from bamboo leaf biomass waste for esterification reactions of glycerol and acetic acid
2020 · Renita Manurung, Muhammad Dedi Anggreawan, et al. · IOP Conference Series Materials Science and Engineering · 8
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Application of choline chloride-based deep eutectic solvent (DES) as catalyst for glycerolysis of palm fatty acid distillate (PFAD) and glycerol
2025 · Dwina Rahmayani Hasibuan, Renita Manurung, et al. · Case Studies in Chemical and Environmental Engineering · 5
Utilizing a Deep Eutectic Solvent in carotene extraction technology with Palm Methyl Ester oil to advance green technology
2025 · Renita Manurung, Evi Naria, et al. · Case Studies in Chemical and Environmental Engineering · 4
Calorific Value of Oil Palm Frond Through Bio-Charcoal Briquette as Renewable Energy
2019 · Seri Maulina, M. Sarah, et al. · IOP Conference Series Materials Science and Engineering · 4
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Synthesis and Characterization of Polystyrene Sulfonic Acid from Expanded Polystyrene Foam as a Catalyst in the Synthesis of Triacetin
2021 · Renita Manurung, Rosdanelli Hasibuan, et al. · Indonesian Journal of Chemistry · 3
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Production of 5-Hydroxymethylfurfural Derived Cassava Peels Using Deep Eutectic Solvent Based Choline Chloride
2021 · Renita Manurung, Oktavianna Winda, et al. · International journal of engineering research in Africa · 3
Menthol-carboxylic Acid Deep Eutectic Solvent for Extraction of Carotenoids From Palm Ester
2021 · R. Manurung, A.G.A. Siregar, et al. · RASAYAN Journal of Chemistry · 3
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Effect of K-Silica heterogeneous catalyst in transesterification reaction of crude palm oil
2020 · Renita Manurung, Ruri Rizki Syahputri Zuhri, et al. · IOP Conference Series Materials Science and Engineering · 2
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Transesterification of refined bleached deodorized palm oil (rbdpo) using novozym® 435 to produce biodiesel
2020 · R Manurung, R Hasibuan, et al. · IOP Conference Series Materials Science and Engineering · 2
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Reusability of the Deep Eutectic Solvent - Novozym 435® Enzymes System in Transesterification from Degumming Palm Oil
2020 · Renita Manurung, Alwi Gery Agustan Siregar · Advanced engineering forum · 2
The potential of catalyst based on palm leaves in biodiesel production as part of palm oil life cycle assesment
2024 · Renita Manurung, Rondang Tambun, et al. · EUREKA Physics and Engineering · 1
Effect of choline hydroxide catalyst in the production of methyl ester from crude palm oil
2020 · R. Manurung, D. K. Syabri, et al. · IOP Conference Series Materials Science and Engineering · 1
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Production Of 5-Hydroxylimethylfurfural From Starch of Durian Seed (Durio zibhetinus) Through Dehydration Reaction Using Solvent-Based Choline Chloride: Glycerol
2020 · R Manurung, I Zulkarnain, et al. · IOP Conference Series Materials Science and Engineering · 1
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Green extraction of palm provitamin A carotenoids: Sustainable solvents and intensified processes
2026 · Renita Manurung, Sri Zahrani Dwi Mauliyah Parinduri, et al. · Chemical Engineering and Processing - Process Intensification
Waste-derived and functionalized silica catalysts for low-carbon biodiesel production: A systematic review of performance, reusability, and circular-economy potential
2026 · Renita Manurung, Sri Zahrani Dwi Mauliyah Parinduri, et al. · Results in Engineering
Water conservation study with the installation of new sand filters in the cooling water return: Innovation analysis and improvement of cooling water performance
2026 · Anggara Dwita Burmana, Renita Manurung, et al. · Water-Energy Nexus
Optimized lithium-impregnated silica catalyst from corn cob waste for enhanced biodiesel production: Structural tuning and circular economy application
2026 · Alwi Gery Agustan Siregar, Renita Manurung, et al. · Journal of Ecological Engineering
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Extraction of carotene from crude palm oil (CPO) using DES thymol - lauric acid as a potential green solvents
2026 · Alwi Gery Agustan Siregar, Renita Manurung, et al. · AIP conference proceedings
Pengaruh Waktu Reaksi Katalis Silika Berbasis Tongkol Jagung Terhadap Densitas Dan Viskositas Biodiesel Sawit
2025 · Syifa Az Zahra Manurung, Alwi Gery Agustan Siregar, et al. · Journal of Innovative and Creativity (Joecy)
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Sosialisasi dan Pelatihan Quizizz sebagai Media Asesmen Pembelajaran Digital untuk Mahasiswa jurusan Matematika UISU
2025 · Siregar, Alwi Gery Agustan, Wahyuni, Ratna, et al. · Jurnal Riset dan Pengabdian Interdisipliner
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Extraction of essential oil from red ginger (Zingiber officinale var rubrum) by solvent-free microwave extraction method
2025 · Renita Manurung, Zahra Adelia Siregar, et al. · EUREKA Physics and Engineering
Works count: 34
Citation count: 99
H-index: 5
I10-index: 3
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