Title :
Study on adsorption of Pb2+ by synthetic tobermorite
Author :
Hongbin, Qi ; Hai, Du ; Shu-ping, Liang ; Congcong, Yin
Author_Institution :
Nat. Lab. of Miner. Mater., China Univ. of Geosci., Beijing, China
Abstract :
Tobermorite is a mineral material with good ion exchange properties. The potassium feldspar ore from Lushi country is muscovite syenite. Potassium feldspar was hydrothermally decomposed with CaO as an additive, and then tobermorite nano-scale powder was synthesized. Based on the research work of our group, the adsorption property of tobermorite to Pb2+ from aqueous solution was studied. The factors of adsorption were studied such as pH values, the reaction time, initial concentration, the temperature. By the orthogonal experiment of the adsorption, we can get the optimize condition of the adsorption. The adsorption equation was curvefitting, by the Langmuir adsorption isotherm model. The thermodynamics and dynamics adsorption of Pb2+ by tobermorite was analyzed.
Keywords :
adsorption; dissociation; lead; nanofabrication; nanoparticles; pH; Langmuir adsorption isothermal model; Lushi country; Pb; adsorption equation; aqueous solution; curve fitting; hydrothermal decomposition; ion exchange properties; mineral material; muscovite syenite; nanoscale powder; pH values; potassium feldspar; potassium feldspar ore; synthetic tobermorite; Chemical analysis; Crystallization; Geology; Laboratories; Minerals; Mouth; Needles; Ores; Temperature; Thermodynamics; Adsorption; Pb2+; Tobermorite;
Conference_Titel :
Mechanic Automation and Control Engineering (MACE), 2010 International Conference on
Conference_Location :
Wuhan
Print_ISBN :
978-1-4244-7737-1
DOI :
10.1109/MACE.2010.5536601
