Use of Nano-Porous Calcium Silicate for Heavy Metal Removal from Aqueous Solutions

Year 2018, Volume: 2 Issue: 2, 8 - 13, 01.12.2018

Onur Yılmaz Özcan

Abstract

Water is indispensable
for our life and fresh water resources are becoming rich by heavy metals
particularly by industrial wastes. Heavy metals are very harmful to the living
organisms and accumulated in the food chain. Removal of heavy metals are therefore
very important for protection of ecological systems. In this study, nano-porous
calcium silicate produced from Rice Hull Ash in the laboratory, was used for
the adsorption of copper, lead and zinc ions from an aqueous solution. The
three elements – copper, lead and zinc – were adsorbed on the calcium silicate
surface in ratios of 90-96 % in the first 15 minutes. Before and after the adsorption
experiments, FTIR analyses of calcium silicate samples were done to investigate
the adsorption type which can be chemical or physical.

Keywords

Nano-porous, calcium silicate, heavy metal, adsorption, FTIR spectra

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