| 袁秋兰,林貂贞,傅银红,赵佳跃.镧掺杂焙烧镁铝水滑石的制备及其吸附性能研究[J].井冈山大学自然版,2015,(5):43-47 |
| 镧掺杂焙烧镁铝水滑石的制备及其吸附性能研究 |
| PREPARATION AND ADSORPTIVE PROPERTY OF MAGNESIA-ALUMINA HYDROTALCITE CALCINED WITH La-DOPED |
| 投稿时间：2015-06-17 修订日期：2015-08-06 |
| DOI：10.3969/j.issn.1674-8085.2015.05.009 |
| 中文关键词: 镧掺杂水滑石 共沉淀法 刚果红 废水处理 |
| 英文关键词: La-doped hydrotalcite coperecipitation method Congo red wastewater treatment |
| 基金项目:福建省中青年教师教育科研项目(JA14304);福建省大学生创新创业训练计划项目(S20141012) |
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| 中文摘要: |
| 采用共沉淀法合成出一系列镁铝镧摩尔比不同的镧掺杂水滑石(La-LDHs),并将镧掺杂水滑石的焙烧产物(La-LDHs-450)用于刚果红染料废水的吸附。考察了镁铝镧摩尔比、吸附剂投加量、吸附温度及刚果红浓度对吸附效果的影响。实验结果表明: 对于150 mL 20 mg/L的刚果红模拟废水溶液,Al3+/La3+比为23:1的镁铝镧类水滑石,投放量为20 mg,在20 ℃下吸附330 min,去除率可达到91.2%。 |
| 英文摘要: |
| A series of La-doped hydrotalcite (La-LDHs) with different ratio of La3+/Al3+ were synthesized by coprecipitation method and the removal of Congo red by calcined La-doped hydrotalcite was investigated. The effect of different ratio of La-LDHs-450, adsorbent additive amount, reaction temperature and initial dye concentration were studied. The results showed that 91.2% Congo red was adsorbed by 20 mg La-LDHs-450 (La3+/Al3+= 23:1) at 20 ℃ after 330 min of reaction in 150 mL Congo red solution with the concentration of 20 mg/L. |
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