https://ojs.uni-miskolc.hu/index.php/multi <p>Multidisciplinary Sciences is a journal of the University of Miskolc.</p> Miskolci Egyetemi Kiadó hu-HU Multidisciplinary Sciences 2062-9737 https://ojs.uni-miskolc.hu/index.php/multi/article/view/3968 <p>The Jászság Basin in Northeastern Hungary presents a complex interplay of geological, hydrogeological, and anthropogenic factors that significantly affect water resource sustainability. Surrounded by karstic and volcanic formations, the basin’s sedimentary aquifer systems are sensitive to both natural and human-induced stressors. This study provides a comprehensive overview of the region’s lithostratigraphy, hydrogeological structure, and historical water management practices, including the impacts of lignite mining and water abstraction. Long-term groundwater monitoring reveals declining trends, particularly in intermediate and deep aquifers, disconnected from surface water systems. Birinyi Edina’s drought model identifies the Jászság as one of Hungary’s most vulnerable areas for both drought and inland excess water, emphasizing the need for spatially targeted planning. Correlation analyses confirm limited vertical recharge and emphasize the fragmented nature of the monitoring network. The findings underscore the urgent need for high-resolution hydrological data, enhanced legal reporting, and integrated management approaches. The Jászság Basin thus serves as a representative case for addressing lowland groundwater challenges under increasing climate and extraction pressures.</p> Julianna Mekker Péter Szűcs Zoltán Püspöki Copyright (c) 2026 Julianna Mekker, Péter Szűcs, Zoltán Püspöki 2026-05-04 2026-05-04 3 16 3 14 10.35925/j.multi.2026.3.1 https://ojs.uni-miskolc.hu/index.php/multi/article/view/3969 <p>Ever growing amount of end-of-life photovoltaic solar elements is a huge economical and environmental problem, that is why the development of their recycling is a task of the outstanding importance. Crystalline silicon, thin layered solar elements, including CdTe ones are introduced, along with the possible mechanical, thermal and chemical techniques. Our research focused on development of flotation technology. The surface properties of CdTe and glass were investigated to reveal the circumstances of their possible separation regarding pH and collectors. The obtained results prove the possibility of the flotation recycling of the obsolete solar elements, which can largely contribute the creation of the circular economy.</p> Szilvia Szabó Ljudmilla Bokányi Copyright (c) 2026 Szabó Szilvia, Bokányi Ljudmilla 2026-05-04 2026-05-04 3 16 15 34 10.35925/j.multi.2026.3.2