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| N-烷基化壳聚糖吸附苯酚的研究 |
| N - Alkylated Chitosan＇ s Adsorption Property to Phenol |
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| DOI：10.3969/j.issn.1671-5322.2012.02.014 |
| 中文关键词: 壳聚糖 水杨醛 苯酚 吸附 |
| 英文关键词: chitosan salicylaldehyde phenol adsorption |
| 基金项目: |
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| 摘要点击次数: 5192 |
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| 中文摘要: |
| 水杨醛与壳聚糖在酸性条件下反应生成Schiff碱，再用NaBH4还原制备了N-烷基化壳聚糖，对改性产物的结构用红外光谱法进行了表征，用紫外光谱法研究了它对苯酚的吸附性能。考察了pH值、时间、酚浓度、吸附剂质量因素对吸附性能的影响。结果表明，经水杨醛改性后的壳聚糖对苯酚具有更良好的吸附性能；吸附符合Freundlich吸附等温方程和Langmuir吸附等温方程；吸附动力学符合Lagergren二级吸附速率方程。 |
| 英文摘要: |
| Schiff base was prepared by salicylaldehyde and chitosan under acidic conditions,and then N-alkylated chitosan was prepared by adding NaBH4 which was used as a reducing agent.The structure of modified chitosan was illustrated by FT-IR.Adsorption of phenol to modified chitosan was investigated by UV.The effects of pH,time,concentration of phenol and mass of sorbent on adsorption property were investigated.The result shows that the modified chitosan has better adsorption property than chitosan.Adsorption property fits well with the Freundlich isotherm adsorption equation and the Langmuir isotherm adsorption equation.Adsorption kinetics fits well with the second-order dynamic model. |
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