The adsorption behavion of Cu 2+ on fiber containing amidoxime groups(AOCF)was studied.The Cu 2+ concentration of aqueous solution was from 0 0087 mol/L to 0 0335 mol/L.The result showed that the adsorption of Cu 2+ o...The adsorption behavion of Cu 2+ on fiber containing amidoxime groups(AOCF)was studied.The Cu 2+ concentration of aqueous solution was from 0 0087 mol/L to 0 0335 mol/L.The result showed that the adsorption of Cu 2+ on AOCF fitted the Langmuir model and the adsorption equation was Γ=0 276 C /(1+0 0282 C )mg/g.The adsorption reaction followed first order kinetics by means of differential method: C = C 0e - kt .The rate constant of adsorption was obtained at different temperature, k =4 47×10 3e Ea/RT ,and the apparent activation energy was determined to be 24 89 kJ/mol.展开更多
An amidoximated fiber was synthesized via a simple pathway.Its chemical and mechanical properties were determined.The static and dynamic adsorption properties to extract Au from ore liquid were studied.The highest ads...An amidoximated fiber was synthesized via a simple pathway.Its chemical and mechanical properties were determined.The static and dynamic adsorption properties to extract Au from ore liquid were studied.The highest adsorption capacities of static and dynamic were 585 mg/g and 2962 mg/g,respectively.It was concluded that this fiber might be used as a good material to extract Au from ore liquid.展开更多
采用部分偕胺肟化的聚丙烯腈纤维与铁离子反应,形成偕胺肟合铁（Ⅲ）纤维,以此为吸附材料,吸附水溶液中的还原棕染料。研究了其吸附反应条件、吸附规律及吸附反应动力学。结果表明,pH值11.5-12.5、温度60℃和吸附时间60 m in为最佳吸附...采用部分偕胺肟化的聚丙烯腈纤维与铁离子反应,形成偕胺肟合铁（Ⅲ）纤维,以此为吸附材料,吸附水溶液中的还原棕染料。研究了其吸附反应条件、吸附规律及吸附反应动力学。结果表明,pH值11.5-12.5、温度60℃和吸附时间60 m in为最佳吸附反应条件。偕胺肟合铁（Ⅲ）纤维对还原棕的吸附反应符合Langmu ir方程和Freund lich等温吸附经验式。采用不同初始浓度研究吸附时间与溶液浓度的关系,用微分法确定了反应级数和反应速率常数。由不同温度下的速率常数,并结合Arrhen ius方程求出了反应的活化能。结果表明,偕胺肟合铁（Ⅲ）纤维对还原棕的吸附符合一级反应动力学特征,速率方程c=c0e^-kt,速率常数k=32.01e^-Ea/RT,活化能Ea=11.55 kJ/mol。展开更多
文摘The adsorption behavion of Cu 2+ on fiber containing amidoxime groups(AOCF)was studied.The Cu 2+ concentration of aqueous solution was from 0 0087 mol/L to 0 0335 mol/L.The result showed that the adsorption of Cu 2+ on AOCF fitted the Langmuir model and the adsorption equation was Γ=0 276 C /(1+0 0282 C )mg/g.The adsorption reaction followed first order kinetics by means of differential method: C = C 0e - kt .The rate constant of adsorption was obtained at different temperature, k =4 47×10 3e Ea/RT ,and the apparent activation energy was determined to be 24 89 kJ/mol.
文摘An amidoximated fiber was synthesized via a simple pathway.Its chemical and mechanical properties were determined.The static and dynamic adsorption properties to extract Au from ore liquid were studied.The highest adsorption capacities of static and dynamic were 585 mg/g and 2962 mg/g,respectively.It was concluded that this fiber might be used as a good material to extract Au from ore liquid.
