Journal
SCIENCE IN CHINA SERIES B-CHEMISTRY
Volume 52, Issue 2, Pages 236-240Publisher
SCIENCE PRESS
DOI: 10.1007/s11426-008-0111-7
Keywords
groundwater; nitrate; denitrification; solid carbon source; poly (epsilon-caprolactone)
Categories
Funding
- National Natural Science Foundation of China [59978020, 50508018]
- Specialized Research Fund for the Doctoral Program of Higher Education [20050003023]
- China Postdoctoral Science Foundation [20070420357]
Ask authors/readers for more resources
Removal of nitrate from groundwater was investigated using biodegradable meal box (BMB) and poly(E >-caprolactone) (PCL) as carbon source and biofilm carrier. The experimental results show that nitrate in groundwater can be effectively removed using BMB and PCL as carbon source. Denitrification rates supported by BMB and PCL were 52.80 and 42.77 mg (NO3-N)/(m(2)center dot h), respectively, at 30A degrees C and pH 7.5. The pH value of effluent ranged from 7 to 8, and NO2-N concentration was less than 0.1 mg/L. Compared with BMB, PCL could decrease nitrite accumulation; however, more significant influence of temperature on denitrification was observed for PCL as carbon source. Temperature constants for BMB and PCL were 0.045 and 0.068, respectively, at 10-30A degrees C. Based on denitrification efficiency and cost, BMB is more suitable as a carbon source for denitrification of groundwater than PCL.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available