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Impact of Silica Nanoparticles on the Heterotrophic Denitrification

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Abstract:

Silica nanoparticles (Si NPs) have a wide range of uses in semiconductors, battery cathode material, and high power laser source materials. However, Si NPs would flow into the wastewater treatment inevitably, and then potentially harmful interactions can occur between nanoparticles and wastewater systems, especially in denitrification process. The present study was aimed to investigate the effects of Si NPs on nitrate nitrogen removal under anaerobic conditions by employing activated sludge. Our data demonstrates that Si NPs had positive effects on denitrification at the beginning and did not display any measurable effect on nitrite nitrogen removal at the concentration of 100 mg/L and below. The denitrification process was elucidated by using the first-order reaction kinetics equation. This study provided useful data for understanding the effects of Si NPs on wastewater treatment.

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Periodical:

Advanced Materials Research (Volumes 955-959)

Pages:

175-179

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.955-959.175

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Online since:

June 2014

Authors:

Lin Ying, Li Na, Yu Yang Zhou, Yin Jun*

Keywords:

Denitrification, Kinetic Equation, NAR, NIR, Si NPs

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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* - Corresponding Author

References

[1] Bystrzejewska-Piotrowska G, Golimowski J, Urban P L. Nanoparticles: their potential toxicity, waste and environmental management[J]. Waste Management, 2009, 29(9): 2587-2595.

DOI: 10.1016/j.wasman.2009.04.001

Google Scholar

[2] Brar S K, Verma M, Tyagi R D, et al. Engineered nanoparticles in wastewater and wastewater sludge–evidence and impacts[J]. Waste Management, 2010, 30(3): 504-520.

DOI: 10.1016/j.wasman.2009.10.012

Google Scholar

[3] Franklin N M, Rogers N J, Apte S C, et al. Comparative toxicity of nanoparticulateZnO, bulk ZnO, and ZnCl2 to a freshwater microalga (Pseudokirchneriellasubcapitata): the importance of particle solubility[J]. Environmental Science & Technology, 2007, 41(24): 8484-8490.

DOI: 10.1021/es071445r

Google Scholar

[4] Limbach L K, Wick P, Manser P, et al. Exposure of engineered nanoparticles to human lung epithelial cells: influence of chemical composition and catalytic activity on oxidative stress[J]. Environmental Science & Technology, 2007, 41(11): 4158-4163.

DOI: 10.1021/es062629t

Google Scholar

[5] Kissinger H E. Reaction kinetics in differential thermal analysis[J]. Analytical chemistry, 1957, 29(11): 1702-1706.

DOI: 10.1021/ac60131a045

Google Scholar

[6] Standard Methods for the Examination of Water and Wastewater, 20th ed.; American Public Health Association (APHA), American Water Works Association, and Water Environment Federation: Washington, DC, (1998).

DOI: 10.1002/j.1551-8833.1932.tb18153.x

Google Scholar

[7] Zheng, X.; Wu, R.; Chen, Y. Effects of ZnO nanoparticles on wastewater biological nitrogen and phosphorus removal. Environ. Sci. Technol. 2011, 45, 2826−2832.

DOI: 10.1021/es2000744

Google Scholar

[8] Zhu, X.; Chen, Y.; Chen, H.; Li, X.; Peng, Y.; Wang, S. Minimizing nitrous oxide in biological nutrient removal from municipal wastewater by controlling copper ion concentrations. Appl. Microbiol. Biotechnol. 2012, DOI: 10. 1007/s00253-012-3988-1.

DOI: 10.1007/s00253-012-3988-1

Google Scholar

[9] Guo Y G, Hu J S, Wan L J. Nanostructured materials for electrochemical energy conversion and storage devices[J]. Advanced Materials, 2008, 20(15): 2878-2887.

DOI: 10.1002/adma.200800627

Google Scholar

[10] Hamidpour M, Kalbasi M, Afyuni M, et al. Sorption hysteresis of Cd (II) and Pb (II) on natural zeolite and bentonite[J]. Journal of hazardous materials, 2010, 181(1): 686-691.

DOI: 10.1016/j.jhazmat.2010.05.067

Google Scholar