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层状氢氧化镁铝焙烧产物对SCN^-的吸附性能 被引量：1

Adsorption of Calcined Mg/Al Layered Double Hydroxides for Thiocyanate Ion
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摘要 研究了层状氢氧化镁铝焙烧产物对SCN-的吸附行为,考察了焙烧温度、吸附温度、时间、pH值等因素对吸附的影响.在SCN-初始浓度为25 mg/L,温度为40℃,焙烧物投加量为2 g/L,pH值为6的条件下,4 h达到吸附平衡,SCN-脱除率可达96.91%.吸附过程符合Langmu ir等温方程式,主要是单分子层的吸热吸附. The adsorption performance of calcined Mg/Al layered double hydroxides for thiocyanate ion was studied. The effects of calcined temperature of Mg/Al layered double hydroxides and adsorption temperature, adsorption time, pH value were investigated. The removal rate of SCN- is 96.91%, when original concentration of thiocyanate ion is 25 mg/L, adsorption temperature is40 ℃, sorbent dosage is 2 g/L, pH value is 6 and adsorption time is 4 h. Equilibrium data were fitted very well to the Langmuir mode in the entire saturation concentration range, indicating that the adsorption was endothermic process and of monomolecular layer.
作者 宋卫得 王海增 郭鲁钢 李冬梅 邢坤
机构地区 中国海洋大学化学化工学院
出处 《化学研究》 CAS 2007年第3期75-79,共5页 Chemical Research
基金 国家自然科学基金资助项目(20477041)
关键词 SCN- 层状氢氧化镁铝 焙烧 吸附 脱除 thiocyanate ion Mg/Al layered double hydroxides calcination adsorption removal
分类号 O647.3 [理学—物理化学]
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参考文献9

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共引文献15

同被引文献20

  • 1申震,唐先进,刘超,徐驰.焙烧态镁铝水滑石处理阴离子染料废水研究[J].环境科学与技术,2006,29(3):89-91. 被引量：15
  • 2杨锡尧,任韶玲,何晖,王大庆.新型催化剂载体材料—镁铝复合氧化物的制备及其物理化学性质[J].分子催化,1996,10(2):88-94. 被引量：54
  • 3孙晓峰,高乃云,徐斌,刘遂庆,赵建夫,宁冉.邻苯二甲酸二甲酯在颗粒活性炭中的穿透特性[J].环境科学,2007,28(8):1738-1745. 被引量：11
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化学研究
2007年 第3期

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