Studies on desorption and regeneration of natural pumice for iron removal from aqueous solution

Water Science and Technology : a Journal of the International Association on Water Pollution Research
S IndahA Binuwara

Abstract

To make the adsorption process more economic and environmental friendly, it is necessary to study desorption and reutilization of the adsorbents. In the present study, the effectiveness of natural pumice in removal of iron from aqueous solution was investigated in several sorption-desorption cycles. The desorption characteristics of previously adsorbed iron ions on natural pumice were tested by various desorbing agents such as HCl, NaOH and aquadest. Among them, HCl showed the highest desorption efficiency (37.89%) with 0.1 M of concentration and 60 min of contact time. The removal efficiency of iron ions in reused natural pumice could be maintained up to 90% in the third cycle of adsorption. The results indicate that although complete desorption was not achieved, natural pumice from Sungai Pasak, West Sumatra, Indonesia, can be sufficiently reused up to three cycles of adsorption-desorption.

References

Feb 28, 2004·Bioresource Technology·Bilal Acemioğlu
Apr 15, 2004·Journal of Hazardous Materials·K Chandra SekharM Vairamani
Aug 28, 2007·Applied Radiation and Isotopes : Including Data, Instrumentation and Methods for Use in Agriculture, Industry and Medicine·Georg Steinhauser, Max Bichler
May 12, 2009·Journal of Hazardous Materials·Esayas Alemayehu, Bernd Lennartz
Dec 14, 2011·Journal of Hazardous Materials·Ceren KütahyalıIrfan Cireli
Jul 2, 2014·BioMed Research International·Ying ZhangYan Lu
Jun 23, 2016·Water Science and Technology : a Journal of the International Association on Water Pollution Research·S IndahA Sasmita

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