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Nitrate reduction using nanoscale zero valent iron supported by porous suspended ceramsite
被引:2
作者:
Liao Runhua
[1
,2
]
Miao Yu
[2
]
Hong Yan
[1
]
Li Yueming
[1
]
Shen Zongyang
[1
]
Wang Zhumei
[1
]
机构:
[1] Jingdezhen Ceram Inst, Sch Mat Sci & Engn, Jingdezhen 333403, Peoples R China
[2] Nanjing Univ, Sch Environm, State Key Lab Pollut Control & Resource Reuse, Nanjing 210023, Jiangsu, Peoples R China
来源:
ADVANCES IN ENVIRONMENTAL TECHNOLOGIES, PTS 1-6
|
2013年
/
726-731卷
关键词:
Nano zerovalent iron;
Porous suspended ceramsite;
Nitrate Reduction;
SEM-EDS;
ZEROVALENT IRON;
CHEMICAL-REDUCTION;
KINETICS;
NANOPARTICLES;
WATER;
DENITRIFICATION;
REACTIVITY;
CATALYSTS;
NITRITE;
D O I:
10.4028/www.scientific.net/AMR.726-731.677
中图分类号:
X [环境科学、安全科学];
学科分类号:
08 ;
0830 ;
摘要:
Porous suspended ceramsite (PSC) supported nanoscale zero valent iron (NZVI/PSC) were applied to the reductive removal of nitrate to investigate the effects. XRD, SEM and EDS analyses on NZVI/PSC revealed that PSC had loaded some nanoparticles, whose size was about 50 nm. Nitrate reduction rate of NZVI/PSC reached about 80% in 60 min, while the PSC unsupported nano zerovalent iron performed poorly with only 8% removal of the nitrate. Furthmore, during the reactions of NZVI/PSC and PSC with nitrate, for the NZVI/PSC, pH change was the greatest, while the reaction with PSC (this particles shows the lowest reactivity for nitrate reduction) resulted in the least pH change.
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页码:677 / +
页数:3
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