Details
| Original language | English |
|---|---|
| Pages (from-to) | 263-268 |
| Number of pages | 6 |
| Journal | International Journal of Environmental Science and Technology |
| Volume | 11 |
| Issue number | 2 |
| Early online date | 26 Mar 2014 |
| Publication status | Published - Mar 2014 |
Abstract
Nitrate removal from water has been accomplished by heterotrophic biofilms using organic carbon as a source of reducing power. To overcome the natural limitation in organic carbon in water, a poly-ε-caprolactone based biofilm carrier that serves simultaneously as a biofilm carrier and as a source of organic carbon was developed and tested in the present work. The feasibility of the new biofilm carrier for nitrate removal from water was evaluated in a packed bed reactor. The combination of size and structure provided a carrier element having high surface area and void volume, 1,170 m2/m3 and 67 %, respectively. A maximum denitrification rate of 4.4 mg N-NO3 -/(L.h) (9.2 mg N-NO3 -/(m2.h)) was achieved in the packed bed reactor at 20 °C and pH 7.0. Main advantages of the biofilm carrier developed in the present work are its mechanical stability in water even after biofilm formation and controlled release of organic carbon by enzymatic reactions. The proposed biotechnology to remove nitrate from groundwater is robust and easy to operate.
Keywords
- Biodegradable polymer, Biofilm, Denitrification, Packed bed reactor, Solid carbon source
ASJC Scopus subject areas
- Environmental Science(all)
- Environmental Engineering
- Environmental Science(all)
- Environmental Chemistry
- Agricultural and Biological Sciences(all)
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In: International Journal of Environmental Science and Technology, Vol. 11, No. 2, 03.2014, p. 263-268.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - A poly-ε-caprolactone based biofilm carrier for nitrate removal from water
AU - Rodrigues, A. L.
AU - Machado, A. V.
AU - Nóbrega, J. M.
AU - Albuquerque, A.
AU - Brito, A. G.
AU - Nogueira, R.
PY - 2014/3
Y1 - 2014/3
N2 - Nitrate removal from water has been accomplished by heterotrophic biofilms using organic carbon as a source of reducing power. To overcome the natural limitation in organic carbon in water, a poly-ε-caprolactone based biofilm carrier that serves simultaneously as a biofilm carrier and as a source of organic carbon was developed and tested in the present work. The feasibility of the new biofilm carrier for nitrate removal from water was evaluated in a packed bed reactor. The combination of size and structure provided a carrier element having high surface area and void volume, 1,170 m2/m3 and 67 %, respectively. A maximum denitrification rate of 4.4 mg N-NO3 -/(L.h) (9.2 mg N-NO3 -/(m2.h)) was achieved in the packed bed reactor at 20 °C and pH 7.0. Main advantages of the biofilm carrier developed in the present work are its mechanical stability in water even after biofilm formation and controlled release of organic carbon by enzymatic reactions. The proposed biotechnology to remove nitrate from groundwater is robust and easy to operate.
AB - Nitrate removal from water has been accomplished by heterotrophic biofilms using organic carbon as a source of reducing power. To overcome the natural limitation in organic carbon in water, a poly-ε-caprolactone based biofilm carrier that serves simultaneously as a biofilm carrier and as a source of organic carbon was developed and tested in the present work. The feasibility of the new biofilm carrier for nitrate removal from water was evaluated in a packed bed reactor. The combination of size and structure provided a carrier element having high surface area and void volume, 1,170 m2/m3 and 67 %, respectively. A maximum denitrification rate of 4.4 mg N-NO3 -/(L.h) (9.2 mg N-NO3 -/(m2.h)) was achieved in the packed bed reactor at 20 °C and pH 7.0. Main advantages of the biofilm carrier developed in the present work are its mechanical stability in water even after biofilm formation and controlled release of organic carbon by enzymatic reactions. The proposed biotechnology to remove nitrate from groundwater is robust and easy to operate.
KW - Biodegradable polymer
KW - Biofilm
KW - Denitrification
KW - Packed bed reactor
KW - Solid carbon source
UR - http://www.scopus.com/inward/record.url?scp=84893624623&partnerID=8YFLogxK
U2 - 10.1007/s13762-013-0250-z
DO - 10.1007/s13762-013-0250-z
M3 - Article
AN - SCOPUS:84893624623
VL - 11
SP - 263
EP - 268
JO - International Journal of Environmental Science and Technology
JF - International Journal of Environmental Science and Technology
SN - 1735-1472
IS - 2
ER -