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Using Minced Horseradish Roots for the Treatment of Polluted Waters

Laboratory of Soil Biochemistry, Center for Bioremediation and Detoxification, 129 Land and Water Building, Pennsylvania State Univ., University Park, PA 16802.

^* Corresponding author (jmbollag{at}psu.edu).

ABSTRACT

Recently the use of minced horseradish (Armoracia rusticana P. Gaertner, Meyer & Scherb.) roots has been proposed for the decontamination of waters polluted with chlorinated phenols. In this study the horseradish treatment is further evaluated using water containing phenols and anilines. 2,4-Dichlorophenol sorption by the plant tissues in the absence of H₂O₂ ranged between 40% at pH 2 and 10% at pH 10. The adsorbed compound could easily be extracted with water and methanol. In the presence of H₂O₂, most 2,4-dichlorophenol was polymerized and could be removed from the aqueous solution through precipitation or binding to horseradish. The activity of 1 g of minced horseradish roots was equivalent to 22 purpurogallin units of the purified horseradish peroxidase. Maximal precipitation of 2,4-dichlorophenol was observed at pH values ranging from 5 to 7 and at initial substrate concentrations between 7 and 8 mM. Horseradish application resulted in 99% removal of 27 compounds among 50 compounds tested. These results indicate that the use of horseradish is a feasible treatment for waters contaminated with phenols and anilines.

This article has been cited by other articles:

				M. Tonegawa, J. Dec, and J.-M. Bollag Use of Additives to Enhance the Removal of Phenols from Water Treated with Horseradish and Hydrogen Peroxide J. Environ. Qual., July 1, 2003; 32(4): 1222 - 1227. [Abstract] [Full Text] [PDF]