Author(s)

Hongxiao Lu, Qiurong Li, Haiyan Xiao, Ranran Wang, Danyang Xie

Hebei Key Laboratory of Applied Chemistry, School of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao, China.

In this paper, NiAl layered double hydroxides (NiAl-LDHs) has been modified by non-thermal plasma (NTP) to enhance the fluoride removal capacity of materials. The samples were characterized by X-ray diffraction, Fourier transform infrared spectrometer (FTIR), Thermogravimetric differential thermal analyzer (TG-DTA) and N₂ adsorption-desorption. Effects of pH, co-existing anions, temperature and kinetics on F﹣ adsorption were investigated. The results showed that pH affects the adsorbent surface charge. The effective pH range for F﹣ removal was between 4.5 and 10. Lower pH potentially causes dissolution of NiAl-LDHs. The negligible interference of coexisting ions such as makes the NiAl-LDHs a promising sorbent for fluoride polluted water treatment.

Adsorption, NiAl Layered Double Hydroxides, Non-Thermal Plasma, Fluoride

Lu, H. , Li, Q. , Xiao, H. , Wang, R. and Xie, D. (2014) Effect of Non-Thermal Plasma Modified NiAl Layered Double Hydroxides on the Removal of Fluoride from Aqueous Solution. American Journal of Analytical Chemistry, 5, 547-558. doi: 10.4236/ajac.2014.59062.