Miliauskas, GytisDenafas, Gintaras2026-03-122026-03-122025Miliauskas, G. Process imrpovement on recovery of raw materials from multilayer composites / Gytis Miliauskas, Gintaras Denafas // Матеріали XХV Міжнародної науково-практичної конференції «Екологія. Людина. Суспільство» пам’яті д-ра Дмитра СТЕФАНИШИНА (12 червня 2025 р., м. Київ, Україна). – Київ : КПІ ім. Ігоря Сікорського, 2025. – С. 253-259. – Бібліогр.: 10 назв.2710-3315 (Online)https://ela.kpi.ua/handle/123456789/79458At end of life, waste PCBs (WPCBs) represent both a valuable resource—containing copper, nickel, precious metals, and polymeric materials—and an environmental hazard if landfilled or incinerated. This work develops and optimizes a modular, closed-loop recycling line that (1) delaminates epoxy resin from fiberglass and embedded metal via dimethyl sulfoxide (DMSO) extraction, comparing conventional thermal swelling with microwave-assisted processing to maximize resin yield, preserve fiber integrity, and assess solvent recyclability; (2) mills the residual PCB fragments under a design-of-experiments framework to tune particle size distribution (2–10 mm) and energy use, including evaluation of process-control additives; (3) fractionates milled material through sequential magnetic, eddy-current, electrostatic, and density separation, optimizing separation thresholds and recovering ferrous, non-ferrous, and non-metallic streams; (4) conducts hydrometallurgical extraction on the mixed metal fraction, including alkali pre-treatment, acid leaching (with oxidant enhancement), solvent-extraction, and electrowinning to produce high-purity metal products; and (5) scales the optimized processes from laboratory (2 L) to pilot (200 L) stirred reactors under geometric similitude. Finally, mass and energy balances, closed-loop solvent and water recycling. Key technical uncertainties—including solvent–resin selectivity, milling energy–liberation trade-offs, leaching kinetics in complex residues, scale-up hydrodynamics, and solvent recovery losses—are systematically investigated. The resulting platform offers a viable path toward circular, sustainable PCB recycling with minimized waste and maximized resource recovery.encircular economyorganic extractionPCB recyclinghydrometallurgical extractionprototype designциркулярна економікаорганічна екстракціяпереробка друкованих платгідрометалургійна екстракціяпроєктування прототипуArticleС. 253-259https://doi.org/10.20535/ehs2710-3315.2025.3303870000-0002-6834-1026