Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research)
Online ISSN : 2185-6648
ISSN-L : 2185-6648
Technical Note (In Japanese)
AVAILABILITY OF ORGANIC POLYMER GEL AS AN ELECTRON DONOR IN DENITRIFICATION
Tsuneo TANAKATakanori YANAGISAWA
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2014 Volume 70 Issue 3 Pages 53-58

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Abstract
 Hydroxypropylcellulose (HPC) powder was selected as polymer gel material, and the HPC hydrogel was prepared applying the radiation crosslinking technique. The hydrogel was packed into a carbon felt hollow cylinder (carrier), and then the carrier was submerged in the reactor. After a 2-week bacterial acclimatization period, the continuous denitrification experiments were carried out over three months. In the experiment using the carrier without the hydrogel, total nitrogen (TN) concentration in the reactor was not decreased. On the other hand, a significant difference between influent and effluent TN concentrations was recognized in the experiment using the carrier with the hydrogel. The use of the hydrogel stimulated the denitrification in the reactor. These results showed that the hydrogel could be used as an electron donor and/or carbon source in the denitrification.
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© 2014 Japan Society of Civil Engineers
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