NO3--N removal with sulfur-lime porous ceramic carrier (SLPC) in the packed-bed bioreactors by autosulfurotrophic denitrification

Title
NO3--N removal with sulfur-lime porous ceramic carrier (SLPC) in the packed-bed bioreactors by autosulfurotrophic denitrification
Author
박재구
Keywords
Denitrification; Biofilm; Nitrate; Sulfur-lime ceramic carrier; Groundwater
Issue Date
2012-07
Publisher
ELSEVIER SCIENCE BV
Citation
JOURNAL- TAIWAN INSTITUTE OF CHEMICAL ENGINEERS, 2012, 43(4), P.591-596
Abstract
The performance of sulfur-lime porous ceramic carrier (SLPC) in the packed-bed bioreactors (PBBRs) was evaluated. SLPC showed the applicability of energy substrate as well as physical support to the microbial biofilm for the contaminated groundwater treatment. The PBBRs fed with influent concentration range of 20-60 mg NO3--N/L also showed the maximum denitrification efficiency of 99.5% at the loading rate range of 0.22-1.2 kg NO3--N/m(3) SLPC/d. A comparison with the previous results showed that NO3--N removal rates of the PBBRs were significantly higher than those of sulfur packed-bed reactors. The nitrous oxide content in the produced gas was found to be less than 1%. Good mass transfer of NO3--N to the biofilm on sulfur surfaces and absence of clogging problems could be the main reasons for the higher NO3--N removal rate in the PBBRs. Results presented here also constitute the usability of an innovative SLPC and suggest that the PBBRs with SLPC is suitable or post-denitrification of NO3--N contaminated groundwater due to unnecessary external energy and alkalinity source. (C) 2012 Taiwan Institute of Chemical Engineers. Published by Elsevier B.V. All rights reserved.
URI
https://www.sciencedirect.com/science/article/pii/S1876107012000028?via%3Dihubhttp://hdl.handle.net/20.500.11754/66406
ISSN
1876-1070
DOI
10.1016/j.jtice.2012.01.001
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > EARTH RESOURCES AND ENVIRONMENTAL ENGINEERING(자원환경공학과) > Articles
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE