TY - JOUR
T1 - Nitrate removal from groundwater using negatively charged nanofiltration membrane
AU - Zou, Lianpei
AU - Zhang, Sitong
AU - Liu, Jianyong
AU - Cao, Yi
AU - Qian, Guangren
AU - Li, Yu You
AU - Xu, Zhi Ping
N1 - Publisher Copyright:
© 2018, Springer-Verlag GmbH Germany, part of Springer Nature.
PY - 2019/11/1
Y1 - 2019/11/1
N2 - A commercial nanofiltration (NF) membrane was modified using poly(sodium 4-styrenesulfonate) (PSS) to improve the nitrate rejection from groundwater. Fourier transform infrared spectroscopy, thermogravimetric analysis, zeta potential, and water contact angle analyses were performed, showing that PSS was successfully coated onto the membrane with the surface negative charge density being enhanced. The results of nitrate removal tests showed that the best PSS concentration was 1.5 mg/L, with the nitrate rejection rate of 88.8% and the permeate flux of 27.0 L/m2 h. The effect of initial nitrate concentration and solution pH on the nitrate removal performance of the modified NF membrane was investigated. The results indicate that the modified NF membrane can improve nitrate removal from actual groundwater, with little membrane permeate flux loss. [Figure not available: see fulltext.].
AB - A commercial nanofiltration (NF) membrane was modified using poly(sodium 4-styrenesulfonate) (PSS) to improve the nitrate rejection from groundwater. Fourier transform infrared spectroscopy, thermogravimetric analysis, zeta potential, and water contact angle analyses were performed, showing that PSS was successfully coated onto the membrane with the surface negative charge density being enhanced. The results of nitrate removal tests showed that the best PSS concentration was 1.5 mg/L, with the nitrate rejection rate of 88.8% and the permeate flux of 27.0 L/m2 h. The effect of initial nitrate concentration and solution pH on the nitrate removal performance of the modified NF membrane was investigated. The results indicate that the modified NF membrane can improve nitrate removal from actual groundwater, with little membrane permeate flux loss. [Figure not available: see fulltext.].
KW - Membrane permeate flux
KW - Nanofiltration
KW - Negative charge density
KW - Nitrate rejection rate
KW - Sodium 4-styrenesulfonate
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U2 - 10.1007/s11356-018-3829-6
DO - 10.1007/s11356-018-3829-6
M3 - Article
C2 - 30515691
AN - SCOPUS:85057746777
SN - 0944-1344
VL - 26
SP - 34197
EP - 34204
JO - Environmental Science and Pollution Research
JF - Environmental Science and Pollution Research
IS - 33
ER -