The problem of a nylon carpet waste was addressed in the thesis. Main stages of nylon carpet lifecycle were defined. Conditions for closed-loop circular structure of nylon lifecycle were listed. The component structure of nylon carpet was studied. Four main nylon waste recycling categories were studied. Possible applications of recycled waste materials were addressed in the thesis. The study of nylon waste collection and identifi-cation processes was performed. An environmental study based on ISO 14015 standard called “Environmental Product Declaration” of three selected nylon carpets with differ-ent structure was carried out. The carpet with the best environmental performance was named.

Main stages of nylon lifecycle include nylon polymerization, product production, prod-uct use, waste disposal, waste collection, recycling. Nylon recycling includes depolymer-ization, extraction, melt-blending and incineration. Recycled nylon waste is used in car-pet re-production, construction, textile and automotive industries as well as for produc-tion of melded polymers and thermoplastics. Based on the conducted study carpet with nylon 6 face fiber and polyester backing had the best environmental performance. It is proposed to be sold by the carpet retailer.