Adsorption characteristics of carbonized bark for phenol and pentachlorophenol

Edgehill, RU and Lu, GQ (1998) Adsorption characteristics of carbonized bark for phenol and pentachlorophenol. Journal of Chemical Technology And Biotechnology, 71 1: 27-34.


Author Edgehill, RU
Lu, GQ
Title Adsorption characteristics of carbonized bark for phenol and pentachlorophenol
Journal name Journal of Chemical Technology And Biotechnology   Check publisher's open access policy
ISSN 0268-2575
Publication date 1998
Sub-type Article (original research)
DOI 10.1002/(SICI)1097-4660(199801)71:1<27::AID-JCTB796>3.3.CO;2-K
Volume 71
Issue 1
Start page 27
End page 34
Total pages 8
Language eng
Abstract The potential of using carbonized slash pine bark as a substitute for activated carbon was examined in this study. The bark was carbonized by slow heating in nitrogen for 6.5 h to 672 degrees C. The BET-N-2 surface area, average micropore and mesopore diameter, and micropore volume were 332 m(2) g(-1) 21.7 Angstrom, and 0.125 cm(3) g(-1), respectively. The adsorption capacities for phenol and pentachlorophenol (PCP) at pH 2 and pH 8 were evaluated. The Langmuir equation provided a slightly better fit than the Freundlich equation to two sets of phenol data. The calculated Freundlich constants, K = 0.41 - 0.58 mmol/g/(mmol dm(-3))(1/n) and 1/n = 0.30 - 0.41, were lower and higher, respectively, than literature values for activated carbons. The adsorption capacity of the carbonized bark was much lower for PCP than for phenol. The protonated and anionic PCP isotherms were Type II or III, respectively, in the Brunauer classification. The BET equation provided the best fit to protonated PCP isotherm data. The anionic PCP data were fitted to both the BET model and an equation used in the literature to represent phosphate adsorption on activated carbons. Nonlinear regression of the data for both phenol and PCP adsorption with the Freundlich, Langmuir and BET equations generally gave more accurate parameters, compared with the use of linearized equations to obtain the parameters. (C) 1998 SCI.
Keyword Biotechnology & Applied Microbiology
Chemistry, Multidisciplinary
Engineering, Chemical
Carbonized Bark
Adsorption
Bet Isotherm
Phenol
Pcp
Granular Activated Carbon
Irreversible Adsorption
Substituted Phenols
Removal
Water
Regeneration
Sorption
Clay
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: Australian Institute for Bioengineering and Nanotechnology Publications
 
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