Activated carbon from avocado seeds for the removal of phenolic compounds from aqueous solutions

被引：65

作者：

Leite, Anderson J. B. ^{[1
]}

Sophia, Carmalin A. ^{[2
]}

Thue, Pascal S. ^{[1
]}

dos Reis, Glaydson S. ^{[1
]}

Dias, Silvio L. P. ^{[1
]}

Lima, Eder C. ^{[1
]}

Vaghetti, Julio C. P. ^{[1
]}

Pavan, Flavio A. ^{[3
]}

de Alencar, Wagner Soares ^{[1
,4
]}

机构：

[1] Fed Univ Rio Grande Sul UFRGS, Inst Chem, Ave Bento Goncalves 9500,POB 15003, BR-91501970 Porto Alegre, RS, Brazil

[2] Natl Environm Engn Res Inst NEERI, Chennai Zonal Lab, CSIR Campus, Chennai 600113, Tamil Nadu, India

[3] Fed Univ Pampa, UNIPAMPA, Bage, RS, Brazil

[4] Fed Univ South & Southeast Para UNIFESSPA, Inst Exact Sci, Maraba, PA, Brazil

来源：

DESALINATION AND WATER TREATMENT | 2017年 / 71卷

关键词：

Avocado seed; Microwave-assisted pyrolysis; Activated carbons; Phenolic compounds; Isotherm and kinetic models; Adsorption; ORDERED MESOPOROUS CARBONS; PERMANENT MODIFIERS; METHYLENE-BLUE; SEWAGE-SLUDGE; COCOA SHELL; W-RH; ADSORPTION; MICROWAVE; WASTE; DYE;

D O I：

10.5004/dwt.2017.20540

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Avocado seed activated carbon (ASAC) was synthesized by microwave-heating process using ZnCl2 as an activating agent. The adsorbent ASAC was characterized using analytical techniques namely N-2 isotherms, Fourier transform infrared spectroscopy, and scanning electron microscopy. The surface area of ASAC was 1,432 m(2) g(-1). The ASAC prepared was used for adsorption of resorcinol and 3-aminophenol from aqueous solutions. Kinetic models namely pseudo-first order, pseudo-second order, and Avrami fractional order and isotherms (Freundlich, Langmuir, and Liu) were applied to the experimental adsorption data. The results demonstrate maximum adsorption capacity for resorcinol (406.9 mg g(-1)) and 3-aminophenol (454.5 mg g(-1)) at 50 degrees C. The thermodynamic analysis of data and the effect of temperature studies revealed that the adsorption processes of resorcinol and 3-aminophenol onto ASAC were temperature dependent. The adsorption processes were exothermic and spontaneous. The avocado carbon displayed excellent adsorption properties for the simulated effluents containing phenolic compounds.

引用

页码：168 / 181

页数：14

共 55 条

[1]

[Anonymous], J MOL LIQ

[2]

[Anonymous], 2015, CARBON NANOMATERIALS

[3] Removal of tetracycline antibiotic from contaminated water media by multi-walled carbon nanotubes: operational variables, kinetics, and equilibrium studies [J].