Carbons prepared by microwave co-pyrolysis of waste scrap tyres and corn cob: Effect of cation size and charge on xylene adsorption

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F24%3A10255670" target="_blank" >RIV/61989100:27360/24:10255670 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61989100:27640/24:10255670 RIV/61989100:27710/24:10255670

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S2213343724025053?dgcid=author" target="_blank" >https://www.sciencedirect.com/science/article/pii/S2213343724025053?dgcid=author</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jece.2024.114374" target="_blank" >10.1016/j.jece.2024.114374</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Carbons prepared by microwave co-pyrolysis of waste scrap tyres and corn cob: Effect of cation size and charge on xylene adsorption

Popis výsledku v původním jazyce

Carbons prepared by pyrolysis of waste corn cobs or scrap tyres using different microwave power (200, 400, 600 W) are compared with carbons prepared by co-pyrolysis of corn:tyre mixtures in various mass ratios without/with activator (KOH, ZnCl2, K2CO3, NaOH in solid or liquid phase). Activation and co-pyrolysis of corn:tyre mixture was proved to be advantageous, prepared activated carbons showed enhanced xylene adsorption compared to non-activated. Activated carbons prepared from corn:tyre mixture at mass ratio of 4:1 and using ZnCl2 in liquid and ZnCl2 and K2CO3 in solid phase showed the highest adsorption capacities (171, 139 and 104 mgxylene.g-1, respectively) despite the opposite trend in their microporosity. Molecular modeling proved a preferential interaction of xylene with activated carbons porous structure through Zn2+, K+ and Na+ ions. The smallest cation with the highest positive charge, Zn2+, interacts the most strongly with xylene. The strength of cation-xylene interaction decreases as follows: Zn2+ &gt; Na+ &gt; K+. As the strongest were proved xylene interactions with Pore (5.2 Å)_Zn2+ &gt; Pore (8.5 Å)_Zn2+ &gt; Surface_Zn2+ &gt; Pore (5.2 Å)_Na+  Pore (5.2 Å)_K+, which explains the highest adsorption capacities of ZnCl2-activated carbons despite of their lower microporosity compared to carbon activated by using K2CO3(s).

Název v anglickém jazyce

Carbons prepared by microwave co-pyrolysis of waste scrap tyres and corn cob: Effect of cation size and charge on xylene adsorption

Popis výsledku anglicky

Carbons prepared by pyrolysis of waste corn cobs or scrap tyres using different microwave power (200, 400, 600 W) are compared with carbons prepared by co-pyrolysis of corn:tyre mixtures in various mass ratios without/with activator (KOH, ZnCl2, K2CO3, NaOH in solid or liquid phase). Activation and co-pyrolysis of corn:tyre mixture was proved to be advantageous, prepared activated carbons showed enhanced xylene adsorption compared to non-activated. Activated carbons prepared from corn:tyre mixture at mass ratio of 4:1 and using ZnCl2 in liquid and ZnCl2 and K2CO3 in solid phase showed the highest adsorption capacities (171, 139 and 104 mgxylene.g-1, respectively) despite the opposite trend in their microporosity. Molecular modeling proved a preferential interaction of xylene with activated carbons porous structure through Zn2+, K+ and Na+ ions. The smallest cation with the highest positive charge, Zn2+, interacts the most strongly with xylene. The strength of cation-xylene interaction decreases as follows: Zn2+ &gt; Na+ &gt; K+. As the strongest were proved xylene interactions with Pore (5.2 Å)_Zn2+ &gt; Pore (8.5 Å)_Zn2+ &gt; Surface_Zn2+ &gt; Pore (5.2 Å)_Na+  Pore (5.2 Å)_K+, which explains the highest adsorption capacities of ZnCl2-activated carbons despite of their lower microporosity compared to carbon activated by using K2CO3(s).

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20500 - Materials engineering

Projekt

—

Návaznosti

—

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název periodika

Journal of Environmental Chemical Engineering

ISSN

2213-2929

e-ISSN

2213-3437

Svazek periodika

12

Číslo periodika v rámci svazku

6

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

14

Strana od-do

114374

Kód UT WoS článku

001339829000001

EID výsledku v databázi Scopus

2-s2.0-85206293416