Application of mine waste for wastewater treatment: Efficient organic pollutant removal

Iranian Journal of Earth Sciences

مقاله 6، دوره 9، شماره 2، دی 2017، صفحه 137-145   

نوع مقاله: Original Research Paper

نویسندگان

Samane Ghaedi؛ Kumars Seifpanahi-Shabani^*

Faculty of Mining, Shahrood University of Technology, Shahrood, Iran.

چکیده

In this research, a high porous silicate mining waste that was prepared from Syah Kamar Polymetal Porphyry mine in order to malachite green dye (MG) removal has been applied. The characterization of this natural mineral was determined using the XRD, XRF, SEM and FT-IR analysis. The MG adsorption onto high porous activated waste was studied based on the parameters of pH, temperature, adsorbent dosage, initial dye concentration and contact time. The equilibrium and kinetic adsorption models were experimentally investigated. The obtained data have suggested that the process of MG removal followed up the Sips isotherm and pseudo-second order kinetic. The thermodynamic parameters values consist of ΔG˚, ΔH˚ and ΔS˚ confirms that the adsorption of MG is spontaneous and exothermic reaction. In the optimal condition the removal of MG was more than 93%. This method has a number of advantages, including being low-cost and non-toxic and the availability of natural adsorbent.

کلیدواژه‌ها

High Porous Silicate؛ Syah-Kamar Polymetal Porphyry Mine Waste؛ Malachite Green Dye؛ Adsorption