Items where Author is "Astuti, Widi"

Nurjaman, Fajar and Adhalia, Dysa and Sari, Yuliana and Astuti, Widi and Sumardi, Slamet and Haryono, Tri and Nulhakim, Lukman and Petrus, Himawan Tri Bayu Murti and Saptoro, Agus and Prasetya, Agus (2025) Valorization of Solid Residue from the Lateritic Nickel Ore Leaching Process for Ferronickel Production. Waste and Biomass Valorization, 16 (3). pp. 1511-1520. ISSN 1877-2641

Hendronursito, Yusup and Astuti, Widi and Sabarman, Harsojo and Santoso, Iman (2025) A porous activated carbon derived from banana peel by hydrothermal activation two-step methods. International Journal of Renewable Energy Development, 14 (2). pp. 322-331. ISSN 2252-4940

Sujoto, Vincent Sutresno Hadi and Prasetya, Agus and Petrus, Himawan Tri Bayu Murti and Astuti, Widi and Jenie, Siti Nurul Aisyiyah and Anggara, Ferian and Utama, Andhika Putera and Kencana, Aditya Yuda and Singkuang, Delvirah Elisa Sabatini and Sumartha, Ayu Gracia Ade and Sutijan, Sutijan (2024) Advancing Lithium Extraction: A Comprehensive Review of Titanium-Based Lithium-Ion Sieve Utilization in Geothermal Brine. Journal of Sustainable Metallurgy, 10 (4). pp. 1959-1982. ISSN 2199-3823

Putera, Andreas Diga Pratama and Warmada, I Wayan and Amijaya, Donatus Hendra and Astuti, Widi and Sukadana, I Gde and Petrus, Himawan Tri Bayu Murti (2023) A Comparison Study of Nickel Laterite Reduction using Coal and Coconut Shell Charcoal: A FactSage Simulation. International Journal of Technology, 14 (2). p. 267. ISSN 2086-9614

Panggabean, Tabita Kristina Mora Ayu and Susanti, Ratna Frida and Astuti, Widi and Petrus, Himawan Tri Bayu Murti and Kristijarti, Anastasia Prima and Wanta, Kevin Cleary (2023) Utilization of the spent catalyst as a raw material for rechargeable battery production: The effect of leaching time, type, and concentration of organic acids. International Journal of Renewable Energy Development, 12 (3). pp. 459-466. ISSN 2252-4940

Nulhakim, Lukman and Prasetyo, Imam and Rozana, Monna and Astuti, Widi (2023) ZnO Production from EAF Solid Waste Using Hydrothermal Methods via Oxalate Precipitation. Aceh International Journal of Science and Technology, 12 (1). pp. 53-59. ISSN 2088-9860

Astuti, Widi and Nurjaman, Fajar and Rofiek Mufakhir, Fika and Sumardi, Slamet and Avista, Dira and Cleary Wanta, Kevin and Tri Bayu Murti Petrus, Himawan (2023) A novel method: Nickel and cobalt extraction from citric acid leaching solution of nickel laterite ores using oxalate precipitation. Minerals Engineering, 191. p. 107982. ISSN 08926875

Sanwani, Edy and Jeremy, Erian and Chaerun, Siti Khodijah and Mufakhir, Fika Rofiek and Astuti, Widi (2022) Use of Mixotrophic Bacteria as Flocculating Agents to Separate Iron from Red Mud (Alumina Refinery Residue). Journal of Sustainable Metallurgy, 8 (1). pp. 443-457. ISSN 2199-3823