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International Journal of Environment Science and Technology
Center for Environment and Energy Research and Studies (CEERS)
ISSN: 1735-1472 EISSN: 1735-1472
Vol. 12, No. 7, 2015, pp. 2285-2298
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Bioline Code: st15215
Full paper language: English
Document type: Research Article
Document available free of charge
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International Journal of Environment Science and Technology, Vol. 12, No. 7, 2015, pp. 2285-2298
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The usage of a zeolitic composite for quality improvement of copper contaminated mining wastewaters
Dascălu, D.; Pitulice, L.; Ionel, R. & Bizerea-Spiridon, O.
Abstract
In this paper, a new material based on zeolite
has been investigated in an attempt to explore the possibility
of using it as an efficient adsorbent of copper(II) from
industrial wastewater. This composite material is composed
of volcanic tuff (containing 83 % zeolite) and cellulose
in a 4 to 1 ratio. The performances of the new
adsorbent composite have been examined against those of a
common adsorbent, the zeolitic volcanic tuff. The adsorption
studies were carried out in a batch process at room
temperature, and the effect of various parameters (i.e.,
initial concentration, contact time, adsorbent dosage and
pH) was tested. The experimental data have been modeled
with Langmuir, Freundlich and Temkin isotherms. The
results correspond to Langmuir model showing a monolayer
adsorption with a maximum adsorption capacity of
12.74 mg g-1 at 25 ° C. The copper adsorption onto zeolitic
composite was well described by a pseudo-second
order kinetic model. The experimental results indicate a
superior adsorption of copper(II) onto the new adsorbent
when compared against the common zeolite.
Keywords
Copper; Mine wastewater; Wastewater treatment; Zeolite; Adsorption
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