累托石层孔材料在废水处理中的应用研究(Ⅳ)——CTMAB累托石层孔材料处理模拟有机废水

The application of rectories in waste water treatment(Ⅳ): The treatment of organic compound containing waste water by CTMBA rectories

用十六烷基三甲基溴化铵(CTMAB)与累托石进行交联反应制备了CTMAB累托石层孔材料并研究其吸附性能.结果表明:当废水中CTMAB累托石层孔材料用量为40g/L,pH=3.0,常温,吸附时间为60min时,其COD去除率达76%以上.吸附符合Freundlich等温吸附式:Γ=1.338C1/nt,吸附反应为一级反应:Ct=C0×e-1.1×10-3t.吸附热力学研究表明:ΔH=1.819kJ/mol,ΔG=-0.051kJ/mol,ΔS=6.073J/(mol·K).

The CTMAB rectorite were synthesized by cation exchange reaction between cetyltrimethylammonium bromide(CTMAB) and rectorite. Using the CTMAB rectorite,optimum conditions adsorption were investigated in detail. The experiment results show that when the content of CTMAB rectorite is 40 g/L wastewater, the pH is 3.0, room temperature, the contact time is 60 min, the COD could be removed to 76 percents.The adsorption of rectorite was fit to Freundlich isothermal:Γ=1.338C1/nt,the reaction of adsorption is the first order reaction kinetics equation: Ct=C0×e-1.1×10-3t,the thermodynamics factors is ΔH=1.819 kJ/mol, ΔG=-0.051 kJ/mol,ΔS=6.073 J/(mol·K). 