合成雪硅钙石净化含Hg^(2+)废水的实验

ADSORPTION OF Hg^(2+) BY SYNTHETIC TOBERMORITE

考察了雪硅钙石对水中的重金属Hg2+离子的吸附性能,通过单因素实验及正交实验,研究了试水的pH值、初始浓度、吸附时间、吸附温度等因素对雪硅钙石吸附Hg2+反应的影响,确定了优化吸附条件.测定了雪硅钙石对Hg2+的吸附等温线,并用Langmuir吸附等温式进行了拟合,计算了吸附热力学参数,并对其吸附动力学过程进行了分析计算.

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,the adsorption property of tobermorite to Hg^2＋ from aqueous solution was studied.The factors of adsorption were studied such as pH values,the reaction time,initial concentration,the temperature.By the orthorhombic experiment of the adsorption,adsorption condition was optimized.The adsorption data were fit by Langmuir adsorption isotherm model.The adsorption thermodynamics and dynamics adsorption of Hg^2＋ by tobermorite was analyzed.