Title of article :
Adsorption of phenols by papermill sludges
Author/Authors :
N. Calace، نويسنده , , E. Nardi، نويسنده , , B. M. Petronio، نويسنده , , M. Pietroletti، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2002
Pages :
5
From page :
315
To page :
319
Abstract :
In this paper we studied the sorption capacity of paper mill sludges for phenols. Phenol, 2-chlorophenol (2-CP), 3-chlorophenol (3-CP), 4-chlorophenol (4-CP), 2-nitrophenol (2-NP), 4-nitrophenol (4-NP), 2,4-dichlorophenol (2,4-DCP), 3,4-dichlorophenol (3,4-DCP) 3,5-dichlorophenol (3,5-DCP) and 2,4,5-trichlorophenol (2,4,5-TCP) were chosen for the sorption tests. Kinetic experiments showed that substituted-phenol sorption on papermill sludge was rapid (equilibrium was reached after 3 h); conversely, the time taken by the phenol to reach equilibrium conditions was 260 h. Experimental data showed that particle diffusion was involved in the sorption process but was not the only rate-limiting mechanism; several other mechanisms were involved. The adsorption isotherms showed the following order of retention capacity of papermill sludge: 2-NP=4-NP<<2-CP
Keywords :
Phenols , paper mill sludge , adsorption
Journal title :
ENVIRONMENTAL POLLUTION
Serial Year :
2002
Journal title :
ENVIRONMENTAL POLLUTION
Record number :
729869
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