TY - GEN
T1 - Nitrate reduction using as-synthesized nanoparticles zero valent iron (NZVI) at ambient environment
AU - Kou, Lai Mun
AU - Hong, Teo Hiu
AU - Sauandaraju, Satheshkumar
AU - Kit, Ng Chun
N1 - Funding Information:
This project, grant no. SEGiIRF/2014-30/FOEBE-7/45, was funded by SEGi Internal Research Fund.
Publisher Copyright:
© 2018 Trans Tech Publications, Switzerland.
PY - 2018/3/20
Y1 - 2018/3/20
N2 - Nitrate removal or denitrification, involves reduction of nitrate into nitrogen and oxygen. The use of nanoparticles zero valent metals for denitrification receives great attention as they have been proven to be effective and environmentally safe. In this work, the nanoparticles were prepared by reducing the metals salts, dissolved in a mixed solution of water and ethanol, using sodium borohydrate. The nitrate reduction reaction took place in an ambient environment-room temperature, neutral pH and aerobic condition. Results from the experiments carried out showed that nitrate has been successfully reduced up to a maximum of 40% in all the samples without an increase in the pH of the solution, a strong indication that ammonia was not produced. As for the study on the reactivity of the recycled NZVI, the samples synthesized with 4:1 (v/v) ethanol/water and using 9: 1 (v/v) ethanol/water, the reactivity of the iron is similar to the fresh NZVI for the first two hours of the study.
AB - Nitrate removal or denitrification, involves reduction of nitrate into nitrogen and oxygen. The use of nanoparticles zero valent metals for denitrification receives great attention as they have been proven to be effective and environmentally safe. In this work, the nanoparticles were prepared by reducing the metals salts, dissolved in a mixed solution of water and ethanol, using sodium borohydrate. The nitrate reduction reaction took place in an ambient environment-room temperature, neutral pH and aerobic condition. Results from the experiments carried out showed that nitrate has been successfully reduced up to a maximum of 40% in all the samples without an increase in the pH of the solution, a strong indication that ammonia was not produced. As for the study on the reactivity of the recycled NZVI, the samples synthesized with 4:1 (v/v) ethanol/water and using 9: 1 (v/v) ethanol/water, the reactivity of the iron is similar to the fresh NZVI for the first two hours of the study.
KW - Neutral pH
KW - Nitrate reduction
KW - Zero valent iron nanoparticles
UR - http://www.scopus.com/inward/record.url?scp=85045306338&partnerID=8YFLogxK
U2 - 10.4028/www.scientific.net/MSF.917.129
DO - 10.4028/www.scientific.net/MSF.917.129
M3 - Conference contribution
AN - SCOPUS:85045306338
SN - 9783035712131
T3 - Materials Science Forum
SP - 129
EP - 133
BT - Material Science and Engineering Technology VI
A2 - Agarwal, Ramesh K.
PB - Trans Tech Publications
T2 - 6th International Conference on Material Science and Engineering Technology 2017
Y2 - 20 October 2017 through 22 October 2017
ER -