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NSYSU

1. Chen, Yi-hsun. Reaction Behavior of Nanoscale Fe3O4 and [Fe3O4]MgO with Different Inorganic Pollutants (NO3-, Cd2+ and Cr6+) in Simulated Groundwater.

Degree: Master, Environmental Engineering, 2008, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0927108-180510 

This study was to investigate the reaction behavior of laboratory-prepared nanoscale adsorbents (Fe3O4 and H-[Fe3O4]MgO) and inorganic pollutants (NO3-, Cd2+and Cr6+) in simulated groundwater. First, Fe3O4 and the composites of nanoscale Fe3O4 and MgO were prepared using chemical co-precipitation method. Then they were characterized and verified by various apparatuses and methods including X-ray diffractometry, scanning electron microscopy, Zetasizer, and specific surface area measurements. Second, the nanoscale adsorbents were used to adsorb inorganic pollutants in simulated groundwater of different conditions. The relevant reaction behavior and mechanisms were also investigated. Results of this research showed that Fe3O4 and H-[Fe3O4]MgO had the greater adsorption amount when the initial concentration of inorganic pollutants was higher than lower. The adsorption rate of inorganic pollutants at 28â was greater than that of at 18â. The experimental results also showed that at a higher pH environment or the existence of humic acid in simulated groundwater would increase the removal efficiency of Cd2+, but decrease the removal efficiency of NO3- and Cr6+. Analysis of inorganic pollutants adsorption on nanoscale adsorbents in simulated groundwater indicated that a Langmuir-type of chemical adsorption and pseudo-second-order reaction kinetic equation would have better fit. In this study, it was also found that nanoscale adsorbents not only adsorbed inorganic pollutants but also reduced NO3- and Cr6+ to NO2-, NH4+, and Cr3+ at pH=3, respectively. Thus, the nanoscale adsorbents (Fe3O4 and H-[Fe3O4]MgO) prepared and were capable of reductively adsorbing inorganic pollutants (e.g., NO3- and Cr6+) for environmental remediation. Advisors/Committee Members: Ming-Ching Kuo (chair), Gordon C. C. Yang (committee member), Hsiu-Wei Chen (chair).

Subjects/Keywords: Simulated Groundwater; [Fe3O4]MgO; Cr6+; Cd2+; NO3-; Nanoscale adsorbent

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Chen, Y. (2008). Reaction Behavior of Nanoscale Fe3O4 and [Fe3O4]MgO with Different Inorganic Pollutants (NO3-, Cd2+ and Cr6+) in Simulated Groundwater. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0927108-180510

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16th Edition):

Chen, Yi-hsun. “Reaction Behavior of Nanoscale Fe3O4 and [Fe3O4]MgO with Different Inorganic Pollutants (NO3-, Cd2+ and Cr6+) in Simulated Groundwater.” 2008. Thesis, NSYSU. Accessed February 21, 2019. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0927108-180510.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7th Edition):

Chen, Yi-hsun. “Reaction Behavior of Nanoscale Fe3O4 and [Fe3O4]MgO with Different Inorganic Pollutants (NO3-, Cd2+ and Cr6+) in Simulated Groundwater.” 2008. Web. 21 Feb 2019.

Vancouver:

Chen Y. Reaction Behavior of Nanoscale Fe3O4 and [Fe3O4]MgO with Different Inorganic Pollutants (NO3-, Cd2+ and Cr6+) in Simulated Groundwater. [Internet] [Thesis]. NSYSU; 2008. [cited 2019 Feb 21]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0927108-180510.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Chen Y. Reaction Behavior of Nanoscale Fe3O4 and [Fe3O4]MgO with Different Inorganic Pollutants (NO3-, Cd2+ and Cr6+) in Simulated Groundwater. [Thesis]. NSYSU; 2008. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0927108-180510

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

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