Modified porous carbon from waste printed circuit boards for enhanced adsorption of carbon dioxide in abandoned mines

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F25%3A10497888" target="_blank" >RIV/00216208:11310/25:10497888 - isvavai.cz</a>

Result on the web

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=a9s0adhZB-" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=a9s0adhZB-</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jece.2025.115790" target="_blank" >10.1016/j.jece.2025.115790</a>

Result language

angličtina

Original language name

Modified porous carbon from waste printed circuit boards for enhanced adsorption of carbon dioxide in abandoned mines

Original language description

Waste printed circuit boards (PCBs) present significant environmental challenges due to their toxic and varied composition. Current recycling methods focus on metal recovery, leaving nonmetals underutilised. This study converts such nonmetals into nitrogen-doped porous carbons with high carbon dioxide adsorption capacity. Waste PCB and pure epoxy samples were processed through milling, sieving, mixing with KOH and urea, and activation in a tubular furnace. Scanning electron microscope images confirm the presence of glass fibres in PCBderived carbon, resulting in smaller pore development than in the epoxy-derived activated carbon. Nitrogen adsorption analyses reveal that PCBs activated at 700 °C exhibit lower surface area (180 m2/g) and micropore volume (0.07 cm3/g) compared to pure epoxy (1381 m2/g and 0.58 cm3/g, respectively). CO2 adsorption capacity (20 °C, 1 bar) is highest for epoxy-derived carbon (2.30 mmol/g), decreasing for PCB-derived carbons from 1.62 mmol/g to 0.06 mmol/g with increasing activation temperature (600-800 °C). PCB-derived porous carbon does show greater affinity for CO2 than the epoxy derived carbon through a higher isosteric heat of adsorption (approx. 24 kJ/mol vs approx. 16 kJ/mol) and higher amount of CO2 adsorbed per surface area surface area (3.3 µmol/m2 vs 1.7 µmol/m2). These carbons offer potential for enhanced CO2 storage in abandoned mines, providing a sustainable solution for PCB waste management and CO2 emission mitigation.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10403 - Physical chemistry

Project

<a href="/en/project/EF15_003%2F0000417" target="_blank" >EF15_003/0000417: Center for Advanced Materials: Design, Synthesis, and Applications</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2025

Confidentiality

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

Name of the periodical

Journal of Environmental Chemical Engineering

ISSN

2213-2929

e-ISSN

2213-3437

Volume of the periodical

13

Issue of the periodical within the volume

2

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

9

Pages from-to

115790

UT code for WoS article

001428275700001

EID of the result in the Scopus database

2-s2.0-85217705291