Phytoremediation of synthetic wastewater by adsorption of lead and zinc onto Alpinia galanga Willd

Vanida Chairgulprasert; Aumikansung Japakeya; Haseenah Samaae

research article

oai:doaj.org/article:9d5d14517e024bd5a6e957a6ff00d200

Phytoremediation of synthetic wastewater by adsorption of lead and zinc onto Alpinia galanga Willd

Authors: Vanida Chairgulprasert
Aumikansung Japakeya
Haseenah Samaae
Publication date: 1 April 2013
Publisher: 'Faculty of Medicine Prince of Songkla University'

Abstract

Adsorption of Pb(II) and Zn(II) from aqueous solution onto a phytosorbent mixture of galangal (Alpinia galangaWilld) leaves and pseudostem has been investigated in a batch system. Removal efficiency was optimized with respect topH, contact time, initial Pb(II) and Zn(II) concentration and phytosorbent dosage. Galangal exhibited a higher adsorptionefficiency for lead (95.2%) than for zinc (66.9%). Both lead and zinc equilibrium sorption data were better represented by theFreundlich isotherm than the Langmuir isotherm and in each case followed second order kinetics

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