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Characterization of insolubilized humic acid and its sorption behaviors

Chen, Hui; Berndtsson, Ronny LU ; Ma, Mingguang and Zhu, Kun (2009) In Environmental Geology 57(8). p.1847-1853
Abstract
Insolubilized humic acid (IHA) was prepared in the laboratory by heating approach. Through the comparison between the endothermic peaks, optimal heating temperature was determined to be 330A degrees C. The modified IHA then was characterized by TG-DTA, SEM, FTIR, element analysis, and nitrogen adsorption-desorption isotherms. The removal efficiency of p-nitrophenol from the aqueous solution by adsorption onto solid IHA surfaces was shown to be a function of pH, reaction temperature, and p-nitrophenol concentration. Adsorption equilibrium data satisfactorily fitted the Langmuir adsorption isotherm. Under a certain concentration range, the removal rate of p-nitrophenol at pH 3.5 could reach 24, 29, and 35 mg/g at a temperature of 25, 35, and... (More)
Insolubilized humic acid (IHA) was prepared in the laboratory by heating approach. Through the comparison between the endothermic peaks, optimal heating temperature was determined to be 330A degrees C. The modified IHA then was characterized by TG-DTA, SEM, FTIR, element analysis, and nitrogen adsorption-desorption isotherms. The removal efficiency of p-nitrophenol from the aqueous solution by adsorption onto solid IHA surfaces was shown to be a function of pH, reaction temperature, and p-nitrophenol concentration. Adsorption equilibrium data satisfactorily fitted the Langmuir adsorption isotherm. Under a certain concentration range, the removal rate of p-nitrophenol at pH 3.5 could reach 24, 29, and 35 mg/g at a temperature of 25, 35, and 45 +/- 0.1A degrees C. The results suggest that IHA could play a role as a potential efficient absorbent to remove organic contaminants, e.g., utilized to purify water contaminated by organic compounds. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
p-Nitrophenol, Isothermal curve, Adsorption, Modification, Soil contamination, Insolubilized humic acid
in
Environmental Geology
volume
57
issue
8
pages
1847 - 1853
publisher
Springer
external identifiers
  • wos:000266372600015
  • scopus:67349208437
ISSN
0943-0105
DOI
10.1007/s00254-008-1472-0
language
English
LU publication?
yes
id
7369499c-d609-4798-8dc2-9f34388868f7 (old id 1425256)
date added to LUP
2009-07-02 16:25:48
date last changed
2017-09-03 04:05:30
@article{7369499c-d609-4798-8dc2-9f34388868f7,
  abstract     = {Insolubilized humic acid (IHA) was prepared in the laboratory by heating approach. Through the comparison between the endothermic peaks, optimal heating temperature was determined to be 330A degrees C. The modified IHA then was characterized by TG-DTA, SEM, FTIR, element analysis, and nitrogen adsorption-desorption isotherms. The removal efficiency of p-nitrophenol from the aqueous solution by adsorption onto solid IHA surfaces was shown to be a function of pH, reaction temperature, and p-nitrophenol concentration. Adsorption equilibrium data satisfactorily fitted the Langmuir adsorption isotherm. Under a certain concentration range, the removal rate of p-nitrophenol at pH 3.5 could reach 24, 29, and 35 mg/g at a temperature of 25, 35, and 45 +/- 0.1A degrees C. The results suggest that IHA could play a role as a potential efficient absorbent to remove organic contaminants, e.g., utilized to purify water contaminated by organic compounds.},
  author       = {Chen, Hui and Berndtsson, Ronny and Ma, Mingguang and Zhu, Kun},
  issn         = {0943-0105},
  keyword      = {p-Nitrophenol,Isothermal curve,Adsorption,Modification,Soil contamination,Insolubilized humic acid},
  language     = {eng},
  number       = {8},
  pages        = {1847--1853},
  publisher    = {Springer},
  series       = {Environmental Geology},
  title        = {Characterization of insolubilized humic acid and its sorption behaviors},
  url          = {http://dx.doi.org/10.1007/s00254-008-1472-0},
  volume       = {57},
  year         = {2009},
}