The adsorption of lead ions onto a zeolite bearing tuff (stilbite) from synthetic acid aqueous solution and acid mine drainage taken from Sasa mine, Macedonia, is elaborated in this paper. The results present that adsorption
occurs efficiently in both of cases.
The physical and chemical properties of the used natural material, zeolite bearing tuff, are characterized by X-ray
diffraction, scanning electron microscopy, energy dispersive spectroscopy. The concentration of metal ions in solution
before and after treatment is obtained by AES-ICP.
The effectivity of zeolite bearing tuff is determined through a series of experiments under batch conditions from
single ion solutions, whereby the main parameters are the effects of initial pH of solution, mass of adsorbent, initial
metal concentration in solution, contacting time and competing cations. The maximum capacity of zeolite bearing tuff
for removal of lead ions from solution is determined by equilibrium studies.
The experimental obtained data are fitted with Freundlich and Langmuir adsorption models. The experimental
data are better fitted with Langmuir adsorption isotherm.
Zeolite bearing tuff is effective adsorbent for treating acid mine drainage. The results showed that 99% of lead ions
are removed from acid mine drainage, i.e. the concentration of lead ions from 0.329 mg/dm3 decrease to 0.002 mg/dm3.
The pH value of acid mine drainage from 3.90 after treatment with zeolite bearing tuff increases to 5.36.
Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies
Informacja
SZANOWNI CZYTELNICY!
UPRZEJMIE INFORMUJEMY, ŻE BIBLIOTEKA FUNKCJONUJE W NASTĘPUJĄCYCH GODZINACH:
Wypożyczalnia i Czytelnia Główna: poniedziałek – piątek od 9.00 do 19.00