@ARTICLE{Moradi_Masoud_Response_2016,
 author={Moradi, Masoud and Fazlzadehdavil, Mehdi and Pirsaheb, Meghdad and Mansouri, Yadollah and Khosravi, Touba and Sharafi, Kiomars},
 volume={vol. 42},
 number={No 2},
 journal={Archives of Environmental Protection},
 howpublished={online},
 year={2016},
 publisher={Polish Academy of Sciences},
 abstract={This research was conducted to study the adsorption of ammonium ions onto pumice as a natural and low-cost adsorbent. The physico-chemical properties of the pumice granular were characterized by X-ray diffraction (XRD), Fourier transforms infrared spectroscopy (FTIR) and scanning electron microscopy (SEM). Modeling and optimization of a NH4+ sorption process was accomplished by varying four independent parameters (pumice dosage, initial ammonium ion concentration, mixing rate and contact time) using a central composite design (CCD) under response surface methodology (RSM). The optimum conditions for maximum removal of NH4+ (70.3%) were found to be 100 g, 20 mg/l, 300 rpm and 180 min, for pumice dosage, initial NH4+ ion concentration, mixing rate and contact time. It was found that the NH4+ adsorption on the pumice granular was dependent on adsorbent dosage and initial ammonium ion concentration. NH4+ was increased due to decrease the initial concentration of NH4 and increase the contact time, mixing rate and amount of adsorbent.},
 type={Artykuły / Articles},
 title={Response surface methodology (RSM) and its application for optimization of ammonium ions removal from aqueous solutions by pumice as a natural and low cost adsorbent},
 URL={http://journals.pan.pl/Content/86162/PDF/aep-2016-0018.pdf},
 doi={10.1515/aep-2016-0018},
 keywords={Pumice ammonium ion adsorption, response surface methodology},
}