Items where Author is "Astuti, Widi"

Article

Chaerun, Siti Khodijah and Winarko, Ronny and Chaerun, Raudhatul Islam and Mufakhir, Fika Rofiek and Lumbantobing, Sarinah Tiodora and Rus, Aisyah Minzikrina Masbar and Ichlas, Zela Tanlega and Minwal, Wahyudin Prawira and Masruri, Muhammad Hafid and Santoso, Imam and Astuti, Widi (2025) Advancing the circular economy: green recovery of rare earth elements (REEs) from coal combustion fly ash using biohydrometallurgical techniques with mixotrophic bacteria. Mineral Processing and Extractive Metallurgy: Transactions of the Institutions of Mining and Metallurgy, 134 (1). pp. 52-66. ISSN 2572-6641

Wicaksono, Mahruri Arif and Suharno, Bambang and Astuti, Widi and Mochtar, Myrna Ariati and Supriyatna, Yayat Iman and Ulfah, Ika Maria and Ferdian, Deni (2025) Advanced engineering of Nd-doped LiNMC hybrid supercapacitor materials with planetary ballmill method and DEM-based microstructural simulation. Next Materials, 9. p. 100987. ISSN 29498228

Daulay, Amru and Astuti, Widi and Sumardi, Slamet and Mufakhir, Fika Rofiek and Supriyatna, Yayat Iman and Haryono, Tri and Samada, Lukmanul Hakim (2025) Synthesis and characteristics of Na-A zeolite from coal fly ash and application for adsorption of cerium(III). Journal of Rare Earths, 43 (1). pp. 171-179. ISSN 10020721

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

Eskani, Istihanah Nurul and Astuti, Widi and Farida and Haerudin, Agus and Setiawan, Joni and Lestari, Dwi Wiji and Isnaini and Widayatno, Tri (2022) Antibacterial activities of synthesised Zno nanoparticles applied on reactive dyed batik fabrics. The Journal of The Textile Institute, 113 (3). pp. 430-439. ISSN 0040-5000

Adiatama, Aufa Rai and Susanti, Ratna Frida and Astuti, Widi and Petrus, Himawan Tri Bayu Murti and Wanta, Kevin Cleary (2022) Synthesis and Characteristic of Nanosilica from Geothermal Sludge: Effect of Surfactant. Metalurgi, 37 (2). p. 73. ISSN 0126-3188

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