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Effect of lead on the sorption of 2,4,6-trichlorophenol on soil and peat
- Source :
- Environmental pollution (Barking, Essex : 1987). 147(3)
- Publication Year :
- 2006
-
Abstract
- The effect of lead on the sorption of 2,4,6-trichlorophenol (2,4,6-TCP) on soil and peat was investigated using a batch equilibration method. Lead markedly diminished the sorption of 2,4,6-TCP, and 2,4,6-TCP had little effect on lead sorption. Peat was a more effective adsorbent for 2,4,6-TCP than soil. The desorption hysteresis of 2,4,6-TCP verified the presence of high-energy sorption sites. Mechanisms of lead suppression effect on the 2,4,6-TCP sorption included the following: Firstly, lead accelerated the aggregation of colloids, the aggregates covered the surface in part and shrunk the pore sizes of the adsorbents, hence decreased the sorption of 2,4,6-TCP. Secondly, X-ray absorption and Fourier transform infrared spectroscopy study suggested that lead competed with 2,4,6-TCP for carboxylic, phenolic and Si-OH groups of organic matter and clay minerals. Such competition was partly responsible for the overall suppression effect of lead on the sorption of 2,4,6-TCP.
- Subjects :
- Health, Toxicology and Mutagenesis
Toxicology
chemistry.chemical_compound
Soil
Adsorption
Desorption
Spectroscopy, Fourier Transform Infrared
Soil Pollutants
Organic matter
Colloids
Fourier transform infrared spectroscopy
chemistry.chemical_classification
Spectrometry, X-Ray Emission
Sorption
General Medicine
Hydrogen-Ion Concentration
Pollution
chemistry
Lead
Environmental chemistry
2,4,6-Trichlorophenol
Absorption (chemistry)
Clay minerals
Chlorophenols
Mutagens
Subjects
Details
- ISSN :
- 02697491
- Volume :
- 147
- Issue :
- 3
- Database :
- OpenAIRE
- Journal :
- Environmental pollution (Barking, Essex : 1987)
- Accession number :
- edsair.doi.dedup.....466c41c6308d89ae46e0a71fff679f34