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Adsorption Characteristics of Atrazine on Granulated Activated Carbon and Carbon Nanotubes
被引:36
作者:
Rambabu, Nedunuri
[1
,2
]
Guzman, Carlos A.
[1
]
Soltan, Jafar
[1
]
Himabindu, Vurimindi
[2
]
机构:
[1] Univ Saskatchewan, Dept Chem Engn, Saskatoon, SK S7N 5A9, Canada
[2] Jawaharlal Nehru Technol Univ Hyderabad, Inst Sci & Technol, Hyderabad, Andhra Pradesh, India
基金:
加拿大自然科学与工程研究理事会;
关键词:
Adsorption;
Atrazine;
Carbon nanotubes;
Granular activated carbon;
SURFACE-AREA;
ENRICHMENT EFFICIENCY;
ORGANIC-CHEMICALS;
WATER SAMPLES;
C18;
SILICA;
KINETICS;
REMOVAL;
THERMODYNAMICS;
PURIFICATION;
HYDROCARBONS;
D O I:
10.1002/ceat.201100376
中图分类号:
TQ [化学工业];
学科分类号:
0817 ;
摘要:
Adsorption of atrazine (ATZ) from aqueous solutions by granular activated carbon (GAC) and carbon nanotubes (CNT) was studied in a batch-mode adsorption system at different initial concentrations of ATZ (1.030.0?mg?L1) and at three temperatures of 288, 296 and 304?K. The adsorption isotherms of Langmuir, Freundlich, PolanyiManes, and BrunauerEmmettTeller (modified) were used to model the process. The adsorption kinetics followed a pseudo-second-order kinetic model. The thermodynamic parameters ?H0, ?S0, and ?G0 of the adsorption were estimated. The thermodynamic parameters indicate that the adsorption process is spontaneous and exothermic.
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页码:272 / 280
页数:9
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