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

SYSNO ASEP	0478823
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Production of activated carbons from waste carpets and its application in methylene blue adsorption: Kinetic and thermodynamic studies
Author(s)	Hassan, A F. (EG) Elhadidy, Hassan (UFM-A)_RID
Number of authors	2
Source Title	Journal of Environmental Chemical Engineering. - : Elsevier - ISSN 2213-2929 Roč. 5, č. 1 (2017), s. 955-963
Number of pages	9 s.
Language	eng - English
Country	GB - United Kingdom
Keywords	Waste carpets ; Activated carbons ; Adsorption ; Kinetic
Subject RIV	BM - Solid Matter Physics ; Magnetism
OECD category	Condensed matter physics (including formerly solid state physics, supercond.)
R&D Projects	LQ1601 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
Institutional support	UFM-A - RVO:68081723
UT WOS	000398950800098
EID SCOPUS	85009986883
DOI	10.1016/j.jece.2017.01.003
Annotation	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.
Workplace	Institute of Physics of Materials
Contact	Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485
Year of Publishing	2018

Number of the records: 1