Production of activated carbons from waste carpets and its application in methylene blue adsorption: Kinetic and thermodynamic studies

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F17%3A00478823" target="_blank" >RIV/68081723:_____/17:00478823 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.jece.2017.01.003" target="_blank" >http://dx.doi.org/10.1016/j.jece.2017.01.003</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jece.2017.01.003" target="_blank" >10.1016/j.jece.2017.01.003</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Production of activated carbons from waste carpets and its application in methylene blue adsorption: Kinetic and thermodynamic studies

Popis výsledku v původním jazyce

This work reports synthesis of three H3PO4-activated carbons from waste carpets ( pre-and/or post-consumer wastes) with different weight ratios of solid waste: H3PO4 ( 1: 1, 1: 2 and 1: 3) to obtain CP11, CP12 and CP13, respectively. Thermal, textural and chemical characterizations were used to compare between the properties of the prepared samples. TGA confirms thermal stability of the prepared adsorbents compared with carpet sample and ash content increases with increasing the percentage of H3PO4. SEM confirms the presence of nanopores created with chemical activation. Nitrogen adsorption showed that surface area in the range 330-953 m(2)/g with pore radius in the range 1.40-1.48 nm. FTIR, pHPZC and base adsorption capacities confirm the presence of acidic surface function groups. It was observed that the optimum conditions for methylene blue adsorption were confirmed at adsorbent dosage of 8 g/L, pH8, equilibrium time about 12 h and the adsorption follow pseudo-second order kinetic model. Maximum adsorption capacities calculated using Langmuir model were 403.2, 704.2 and 769.2 mg/g for CP11, CP12 and CP13, respectively at 35 degrees C. Thermodynamic parameters indicate the physical and spontaneous nature of adsorption. Maximum desorption efficiency of methylene blue was confirmed by ethanol solvent and increased with temperature. (C) 2017 Elsevier Ltd. All rights reserved.

Název v anglickém jazyce

Production of activated carbons from waste carpets and its application in methylene blue adsorption: Kinetic and thermodynamic studies

Popis výsledku anglicky

This work reports synthesis of three H3PO4-activated carbons from waste carpets ( pre-and/or post-consumer wastes) with different weight ratios of solid waste: H3PO4 ( 1: 1, 1: 2 and 1: 3) to obtain CP11, CP12 and CP13, respectively. Thermal, textural and chemical characterizations were used to compare between the properties of the prepared samples. TGA confirms thermal stability of the prepared adsorbents compared with carpet sample and ash content increases with increasing the percentage of H3PO4. SEM confirms the presence of nanopores created with chemical activation. Nitrogen adsorption showed that surface area in the range 330-953 m(2)/g with pore radius in the range 1.40-1.48 nm. FTIR, pHPZC and base adsorption capacities confirm the presence of acidic surface function groups. It was observed that the optimum conditions for methylene blue adsorption were confirmed at adsorbent dosage of 8 g/L, pH8, equilibrium time about 12 h and the adsorption follow pseudo-second order kinetic model. Maximum adsorption capacities calculated using Langmuir model were 403.2, 704.2 and 769.2 mg/g for CP11, CP12 and CP13, respectively at 35 degrees C. Thermodynamic parameters indicate the physical and spontaneous nature of adsorption. Maximum desorption efficiency of methylene blue was confirmed by ethanol solvent and increased with temperature. (C) 2017 Elsevier Ltd. All rights reserved.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Projekt

<a href="/cs/project/LQ1601" target="_blank" >LQ1601: CEITEC 2020</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2017

Kód důvěrnosti údajů

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

Název periodika

Journal of Environmental Chemical Engineering

ISSN

2213-3437

e-ISSN

—

Svazek periodika

5

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

9

Strana od-do

955-963

Kód UT WoS článku

000398950800098

EID výsledku v databázi Scopus

2-s2.0-85009986883