Enhanced Recoverability and Recycling of Resistant Waste Crosslinked Polyethylene via FeTiO3 Catalyst-Assisted Slow Pyrolysis

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985891%3A_____%2F25%3A00640727" target="_blank" >RIV/67985891:_____/25:00640727 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.3390/recycling10060202" target="_blank" >https://doi.org/10.3390/recycling10060202</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/recycling10060202" target="_blank" >10.3390/recycling10060202</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Enhanced Recoverability and Recycling of Resistant Waste Crosslinked Polyethylene via FeTiO3 Catalyst-Assisted Slow Pyrolysis

Popis výsledku v původním jazyce

Crosslinked polyethylene (XLPE) is a widely used material which—unlike polyethylene—is very stable both chemically and mechanically. Therefore, waste from this material is difficult to process. A very promising way is slow pyrolysis catalyzed by FeTiO3 (ilmenite), which allows the conversion of this waste into hydrocarbons via degradation of the rigid chemical structure of crosslinked material. High liquid hydrocarbon yields were achieved by slow pyrolysis both without and with a catalyst at a final temperature of 470 °C (65 and 75–76 wt.%, respectively), but with the catalyst significantly changing the composition of the resulting hydrocarbons. To reveal the possibilities of using the FeTiO3 catalyst for processing waste XLPE, the effect of this catalyst on the degradation of the XLPE structure was investigated. The degradation is probably greatly facilitated by the action of the FeTiO3 catalyst at the defect sites of the XLPE structure, i.e., at the tertiary carbons in the main chain where branching into cross-links occurs. In this way, the FeTiO3 catalyst, even in very small amounts (1%), significantly promotes the degradation of the XLPE structure. This leads to the formation of liquid hydrocarbons, up to 92 wt.% of the products obtained. The novelty of this work lies in a technologically feasible method for processing resistant crosslinked waste material using an inexpensive catalyst, the proposed method provides hydrocarbons with high utility value. On the whole, slow pyrolysis of XLPE waste catalyzed by FeTiO3 at a final temperature of 470 °C and carried out under well-defined conditions appears to be a promising method for converting this waste into valuable hydrocarbons and energy gas.

Název v anglickém jazyce

Enhanced Recoverability and Recycling of Resistant Waste Crosslinked Polyethylene via FeTiO3 Catalyst-Assisted Slow Pyrolysis

Popis výsledku anglicky

Crosslinked polyethylene (XLPE) is a widely used material which—unlike polyethylene—is very stable both chemically and mechanically. Therefore, waste from this material is difficult to process. A very promising way is slow pyrolysis catalyzed by FeTiO3 (ilmenite), which allows the conversion of this waste into hydrocarbons via degradation of the rigid chemical structure of crosslinked material. High liquid hydrocarbon yields were achieved by slow pyrolysis both without and with a catalyst at a final temperature of 470 °C (65 and 75–76 wt.%, respectively), but with the catalyst significantly changing the composition of the resulting hydrocarbons. To reveal the possibilities of using the FeTiO3 catalyst for processing waste XLPE, the effect of this catalyst on the degradation of the XLPE structure was investigated. The degradation is probably greatly facilitated by the action of the FeTiO3 catalyst at the defect sites of the XLPE structure, i.e., at the tertiary carbons in the main chain where branching into cross-links occurs. In this way, the FeTiO3 catalyst, even in very small amounts (1%), significantly promotes the degradation of the XLPE structure. This leads to the formation of liquid hydrocarbons, up to 92 wt.% of the products obtained. The novelty of this work lies in a technologically feasible method for processing resistant crosslinked waste material using an inexpensive catalyst, the proposed method provides hydrocarbons with high utility value. On the whole, slow pyrolysis of XLPE waste catalyzed by FeTiO3 at a final temperature of 470 °C and carried out under well-defined conditions appears to be a promising method for converting this waste into valuable hydrocarbons and energy gas.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10511 - Environmental sciences (social aspects to be 5.7)

Projekt

<a href="/cs/project/TP01010055" target="_blank" >TP01010055: Geofyzika, geotechnika, geomateriály, geotermální energie pro praxi</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Recycling

ISSN

2313-4321

e-ISSN

2313-4321

Svazek periodika

10

Číslo periodika v rámci svazku

6

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

13

Strana od-do

202

Kód UT WoS článku

001648659000001

EID výsledku v databázi Scopus

2-s2.0-105026165818