Laboratory of Advanced Research in Environmental Protection LCAM

Ferestrău-Oituz, Romania

Laboratory of Advanced Research in Environmental Protection LCAM

Ferestrău-Oituz, Romania
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Dascalu D.,West University of Timișoara | Dascalu D.,Laboratory of Advanced Research in Environmental Protection LCAM | Pitulice L.,West University of Timișoara | Pitulice L.,Laboratory of Advanced Research in Environmental Protection LCAM | And 3 more authors.
International Journal of Environmental Science and Technology | Year: 2015

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. © 2014, Islamic Azad University (IAU).


Bizerea Spiridon O.,West University of Timișoara | Bizerea Spiridon O.,Laboratory of Advanced Research in Environmental Protection LCAM | Pitulice L.,West University of Timișoara | Pitulice L.,Laboratory of Advanced Research in Environmental Protection LCAM
Environmental Science and Pollution Research | Year: 2014

This letter is a response to the issues put forth by Dr. Y.S. Ho with regard to the article "Phenol removal from wastewater by adsorption on zeolitic composite" as reported by Bizerea Spiridon et al. (Environ Sci Pollut Res 20:6367-6381, 2013). The response proposes to clarify the error slipped in the typewritten linearized equation of the pseudo-second-kinetic model and the reason for using secondary reference regarding this model. © 2014 Springer-Verlag Berlin Heidelberg.

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