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Journal of Applied Sciences
  Year: 2007 | Volume: 7 | Issue: 21 | Page No.: 3317-3321
DOI: 10.3923/jas.2007.3317.3321
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A Preliminary Study for Removing Phenanthrene and Benzo(a) Pyrene from Soil by Nanoparticles

Benjalak Karnchanasest and Onarpar Santisukkasaem

Nanoparticles (NPs) synthesized were amphiphilic polymer with hydrophilic outer surface and hydrophobic interior with 50-110 nm diameter which enabled them to sorb some lipophilic organic compounds successfully. Stirring condition was crucial and influenced the NPs size. The soil texture and its high Organic Carbons (OCs) exhibited strong affinity to the compounds and subsequently difficult to desorb by NPs particularly high lipophilic benzo(a)pyrene (BaP). It was evident by the soil-NPs partition coefficients (KSN) for PHE (0.55±0.03) and BaP (0.36±0.02) that NPs have stronger affinity than the soil allowing them to attract the compounds from soil. Flushing out of NPs from soil column with electrolyte solution gave 94% recovery which demonstrated some of particles might be trapped in the micropore, adsorb on the soil and inaccuracy weighing method. Phenanthrene (PHE) and BaP removal from spiked soil column were more effective in discontinuous elution for high and low spikes and the latter spike gave approximately 90% PHE, 50% BaP, the best elimination for all cases. It was the limited NPs for removing concentrate PAHs since increase of NPs the removal rate was higher. Factors governing removal process comprised mainly contact time, NPs size, NPs and contaminant concentrations.
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How to cite this article:

Benjalak Karnchanasest and Onarpar Santisukkasaem, 2007. A Preliminary Study for Removing Phenanthrene and Benzo(a) Pyrene from Soil by Nanoparticles. Journal of Applied Sciences, 7: 3317-3321.

DOI: 10.3923/jas.2007.3317.3321






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