Abstract

M.H.H.Mahmoud^1,2,*

DOI : http://dx.doi.org/10.13005/ojc/320424

This paper aims to synthesize  titanium dioxide loaded with nano-zero valent iron (nZVI-TiO₂) from an inexpensive ilmenite ore. Ilmenite leachant, a  solution rich in both titanium and iron ions,has been prepared by leaching ilmenite ore in hydrochloric acid. At 30% HCl, 70 °C  and 5 hours, almost all of iron and titanium in the ilmenite ore were dissolved. Nano titania was then produced by hydrolysis of the Ilmenite leachant in boiling water under open atmosphere and nano-zero valent iron (nZVI) was subsequently precipitated on its surface by reduction with sodium borohydride. The synthesized nZVI-TO₂was characterized by TEM, UV-Vis absorption, XRD and EDXRF and  tested for reduction of nitrate ion from water. The synthesized material showed good performance in reduction of nitrate ion in water compared with nZVI.About 40% of nitrate ion could be removed using nZVI-TO₂from nearly neutral water after 3 hours.

Nitrate ion; Reduction; Nano- Zero valent Iron; Ilmenite ore

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