Search academic texts

Information × Registration Number 0225U004497, (0125U003175) , R & D reports Title Development of technology for phytoremediation of soils contaminated by military operations, using an innovative sorbent from lignite of Ukraine popup.stage_title Розробка інноваційного сорбенту важких металів (Pb, Cd, Cu, Ni, Zn) на основі гумінових кислот, отриманих з бурого вугілля українського родовища Head Miroshnychenko Denys V., Доктор технічних наук Registration Date 10-12-2025 Organization National Technical University "Kharkiv Polytechnic Institute" popup.description1 The novelty of project lies in combining an eco-friendly, natural sorbent, derived from Ukrainian brown coals (lignite) with modern phytoremediation techniques. popup.description2 The report presents the results of Stage I of the research project aimed at developing a phytoremediation technology for soils contaminated with heavy metals as a consequence of military actions, using an innovative sorbent based on humic acids extracted from Ukrainian brown coal. The study substantiates the relevance of shifting from energy-related to non-energy applications of domestic brown coal, particularly due to its high content of valuable humic substances. Brown coal from the Mokra Kalyhirka deposit was sampled and analyzed, its key physicochemical characteristics were determined, and the efficiency of hydrodynamic cavitation as a method for intensifying the extraction of humic acids was evaluated. It was demonstrated that hydrocavitation enables a yield of humic acids exceeding 70%, significantly outperforming traditional alkaline extraction methods (38–39%). Mathematical dependencies describing the influence of cavitation parameters on the extraction process were obtained, and changes in the structure and composition of coal-derived products after cavitational activation were identified. The chemical properties of the extracted humates were studied, confirming their suitability as a basis for sorbents capable of binding toxic heavy metals (Pb, Cd, Cu, Ni, Zn) in contaminated soils. The obtained results form a scientific foundation for the development of effective technologies for the purification and restoration of degraded territories, which is critically important for Ukraine in the context of post-war environmental rehabilitation. Product Description popup.authors Liudmyla A. Lysenko Pavlo P. Karnozhytskyi Pavlo V. Karnozhytskyi popup.nrat_date 2025-12-10 Close