Study of the Hydrometallurgical Processing of Jarosite Residues
Liakyn L. Onalbayeva Z. Daumova G. Saurbayeva B. Aubakirova R. Bakirov A.
December 2025Engineered Science Publisher
ES Materials and Manufacturing
2025#30
This study investigates the effectiveness of ultrasonic-assisted sulfuric acid leaching as an intensification strategy for the hydrometallurgical processing of jarosite cakes. Comprehensive characterization confirmed that the residues consist primarily of zinc ferrite and sodium jarosite phases containing leachable arsenic, lead, and zinc. Conventional acid leaching at 60 °C results in limited metal dissolution due to diffusion constraints and the formation of passivating layers. In contrast, the application of ultrasound markedly enhances extraction efficiency through cavitation-induced particle fragmentation, accelerated mass transfer, and continuous renewal of reactive surfaces. Under optimized conditions (0.10–0.30 M Sulfuric Acid, 12–20 min, S/L = 1:5, 20 kHz and 100 W L-1), the removal efficiencies reached 95–98% for arsenic, up to 99% for zinc, and 94–95% for lead, while acid consumption decreased by 15–30%. Kinetic analysis demonstrated that ultrasonic leaching follows a diffusion-controlled shrinking-core model with a 2–3-fold higher rate constant and a reduced activation energy (~19.5 kJ mol-1) compared with the conventional process (~31 kJ mol-1). Ultrasonic treatment also reduced particle size from 8–10 µm to 4–5 µm, improving reactivity. The treated residues exhibit lower toxicity and are suitable for subsequent pyrometallurgical detoxification or use as cement additives.
Arsenic , Cavitation , Hydrometallurgy , Jarosite residues , Ultrasonic leaching
Text of the article Перейти на текст статьи
International school of engineering, D. Serikbayev East Kazakhstan Technical University, Ust-Kamenogorsk, 070000, Kazakhstan
School of Earth Sciences, D. Serikbayev East Kazakhstan Technical University, Ust-Kamenogorsk, 070000, Kazakhstan
Higher School of IT and Natural Sciences, S. Amanzholov East Kazakhstan University, Ust-Kamenogorsk, 070001, Kazakhstan
Toraighyrov University, Pavlodar, 140008, Kazakhstan
International school of engineering
School of Earth Sciences
Higher School of IT and Natural Sciences
Toraighyrov University
10 лет помогаем публиковать статьи Международный издатель
Книга Публикация научной статьи Волощук 2026 Book Publication of a scientific article 2026