Nitrate removal from ternary ionic solutions by a tight nanofiltration membrane

Desalination ◽  
2007 ◽  
Vol 204 (1-3) ◽  
pp. 63-71 ◽  
Author(s):  
A. Santafé-Moros ◽  
J.M. Gozálvez-Zafrilla ◽  
J. Lora-García
Keyword(s):  
Nitrate Removal ◽  
Nanofiltration Membrane ◽  
Ionic Solutions

Nitrate removal from groundwater using negatively charged nanofiltration membrane

2018 ◽  
Vol 26 (33) ◽  
pp. 34197-34204 ◽  
Author(s):  
Lianpei Zou ◽  
Sitong Zhang ◽  
Jianyong Liu ◽  
Yi Cao ◽  
Guangren Qian ◽  
...  
Keyword(s):  
Nitrate Removal ◽  
Nanofiltration Membrane

THEORY OF IONIC SOLUTIONS

1984 ◽  
Vol 45 (C7) ◽  
pp. C7-97-C7-111 ◽  
Author(s):  
J. P. Hansen
Keyword(s):  
Ionic Solutions

CHARACTERIZATION STUDIES OF A NEW CERAMIC NANOFILTRATION MEMBRANE WITH FOULING RESISTANT PROPERTIES FOR EFFICIENT WATER TREATMENT

2016 ◽  
Vol 15 (7) ◽  
pp. 1629-1634
Author(s):  
Mihaela-Elena Dascalu ◽  
David Amaya Vias ◽  
Valentin Nedeff ◽  
Juan Antonio Lopez-Ramirez
Keyword(s):  
Water Treatment ◽  
Nanofiltration Membrane ◽  
Characterization Studies

EQUILIBRIUM AND KINETICS STUDY OF NITRATE REMOVAL FROM WATER BY PUROLITE A520-E RESIN

2012 ◽  
Vol 11 (1) ◽  
pp. 37-45 ◽  
Author(s):  
Liliana Lazar ◽  
Laura Bulgariu ◽  
Anca Ceica ◽  
Igor Cretescu ◽  
Ion Balasanian
Keyword(s):  
Nitrate Removal ◽  
Kinetics Study ◽  
Equilibrium And Kinetics

Optimal operations for groundwater denitrification of drinking water using heterotrophic biological denitrification process

2006 ◽  
Vol 6 (2) ◽  
pp. 125-130
Author(s):  
C.-H. Hung ◽  
K.-H. Tsai ◽  
Y.-K. Su ◽  
C.-M. Liang ◽  
M.-H. Su ◽  
...  
Keyword(s):  
Drinking Water ◽  
Removal Efficiency ◽  
Nitrate Removal ◽  
Drinking Water Treatment ◽  
Nitrate Content ◽  
Source Water ◽  
Nitrogen Gas ◽  
Negative Effect ◽  
Denitrification Process ◽  
Heterotrophic Denitrification

Due to the extensive application of artificial nitrogen-based fertilizers on land, groundwater from the central part of Taiwan faces problems of increasing concentrations of nitrate, which were measured to be well above 30 mg/L all year round. For meeting the 10 mg/L nitrate standard, optimal operations for a heterotrophic denitrification pilot plant designed for drinking water treatment was investigated. Ethanol and phosphate were added for bacteria growing on anthracite to convert nitrate to nitrogen gas. Results showed that presence of high dissolved oxygen (around 4 mg/L) in the source water did not have a significantly negative effect on nitrogen removal. When operated under a C/N ratio of 1.88, which was recommended in the literature, nitrate removal efficiency was measured to be around 70%, sometimes up to 90%. However, the reactor often underwent severe clogging problems. When operated under C/N ratio of 1.0, denitrification efficiency decreased significantly to 30%. Finally, when operated under C/N ratio of 1.5, the nitrate content of the influent was almost completely reduced at the first one-third part of the bioreactor with an overall removal efficiency of 89–91%. Another advantage for operating with a C/N ratio of 1.5 is that only one-third of the biosolids was produced compared to a C/N value of 1.88.

WOODCHIPS BARRIERS FOR ATRAZINE AND NITRATE REMOVAL; EFFECT OF BIOCHAR AMENDMENT

2018 ◽  
Author(s):  
Bahareh Hassanpour Guilvaiee ◽  
◽  
Tammo Steenhuis ◽  
Larry Geohring
Keyword(s):  
Nitrate Removal ◽  
Biochar Amendment
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