Chemical recycling of post-consumer textile waste via continuous hydrothermal liquefaction and hydrotreatment for simultaneous monomer and hydrocarbons production

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22320%2F25%3A43931464" target="_blank" >RIV/60461373:22320/25:43931464 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S1385894725019291?pes=vor&utm_source=scopus&getft_integrator=scopus" target="_blank" >https://www.sciencedirect.com/science/article/pii/S1385894725019291?pes=vor&utm_source=scopus&getft_integrator=scopus</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.cej.2025.161108" target="_blank" >10.1016/j.cej.2025.161108</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Chemical recycling of post-consumer textile waste via continuous hydrothermal liquefaction and hydrotreatment for simultaneous monomer and hydrocarbons production

Popis výsledku v původním jazyce

Textile waste streams pose a significant sustainability challenge for industry, particularly due to their complex, mixed composition and the presence of various chemical additives, such as colorants, dyes and other finishing chemical additives. This study utilizes hydrothermal liquefaction (HTL) with aqueous phase (AP) recirculation to chemically recycle real mixed textile waste, resulting in an increase from an initial 5 wt% to 27 wt% oil in batch reactors due to water saturation and the partitioning of less polar compounds from the aqueous phase into the oil phase. Continuous processing with AP recirculation further enhances the HTL oil yields to 39 wt% and enables the recovery of 48 wt% of terephthalic acid (TPA) from the original polyesters. The chemical recycling of TPA via HTL has a similar range of energy intensity as its direct synthesis from crude sources. The resulting oil was hydrotreated, producing a fully deoxygenated hydrocarbon mixture rich in a nitrogen free naphtha fraction. However, full denitrogenation was not achieved in the kerosene, gas oil and bottom residue fractions. This study demonstrates the technical feasibility and energy efficiency of chemical recycling of mixed textile waste using HTL.

Název v anglickém jazyce

Chemical recycling of post-consumer textile waste via continuous hydrothermal liquefaction and hydrotreatment for simultaneous monomer and hydrocarbons production

Popis výsledku anglicky

Textile waste streams pose a significant sustainability challenge for industry, particularly due to their complex, mixed composition and the presence of various chemical additives, such as colorants, dyes and other finishing chemical additives. This study utilizes hydrothermal liquefaction (HTL) with aqueous phase (AP) recirculation to chemically recycle real mixed textile waste, resulting in an increase from an initial 5 wt% to 27 wt% oil in batch reactors due to water saturation and the partitioning of less polar compounds from the aqueous phase into the oil phase. Continuous processing with AP recirculation further enhances the HTL oil yields to 39 wt% and enables the recovery of 48 wt% of terephthalic acid (TPA) from the original polyesters. The chemical recycling of TPA via HTL has a similar range of energy intensity as its direct synthesis from crude sources. The resulting oil was hydrotreated, producing a fully deoxygenated hydrocarbon mixture rich in a nitrogen free naphtha fraction. However, full denitrogenation was not achieved in the kerosene, gas oil and bottom residue fractions. This study demonstrates the technical feasibility and energy efficiency of chemical recycling of mixed textile waste using HTL.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20402 - Chemical process engineering

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

Chemical Engineering Journal

ISSN

1385-8947

e-ISSN

1873-3212

Svazek periodika

508

Číslo periodika v rámci svazku

March

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

11

Strana od-do

161108

Kód UT WoS článku

001440704900001

EID výsledku v databázi Scopus

2-s2.0-85219511172