| DTC改性壳聚糖的合成及其对重金属捕集性能的研究 |
| |
| 引用本文： | 相波,李义久,封盛.DTC改性壳聚糖的合成及其对重金属捕集性能的研究[J].水处理技术,2006,32(1):10-13,17. |
| |
| 作者姓名： | 相波 李义久 封盛 |
| |
| 作者单位： | 同济大学化学系,上海,2000092 |
| |
| 摘 要： | 本文对壳聚糖（CTS）进行化学改性，合成了一种重金属捕集剂-二硫代氨基甲酸改性壳聚糖（DTC—CTS）。根据CTS本身的溶解性能，及反应动力学、热力学等特点实验探讨了影响合成DTC—CTS的因素：反应介质、反应物浓度、碱度、温度、时间、反应物的投加速度等，并确定了适宜的合成方法。文章研究了DTC-CTS与未改性的CTS对水溶液中重金属捕集性能的差别。实验表明，与未改性的CTS相比，DTC—CTS捕集重金属的性能更好，可以在更宽的pH范围内使用，捕集重金属的数量更大。可以预见，对于含有重金属的工业废水，DTC—CTS是一种优良的重金属捕集剂。
|
| 关 键 词： | 壳聚糖 改性 重金属 合成 捕集 |
| 文章编号： | 1000-3770（2006）01-0010-04 |
| 收稿时间： | 2005-01-31 |
| 修稿时间： | 2005-01-31 |
SYNTHESIS OF DITHIOCARBAMATE-MODIFIED CHITOSAN AND ITS PROPERTIES FOR HEAVY METALS ADSORPTION |
| |
| Xiang Bo,Li Yi-jiu,Feng Sheng.SYNTHESIS OF DITHIOCARBAMATE-MODIFIED CHITOSAN AND ITS PROPERTIES FOR HEAVY METALS ADSORPTION[J].Technology of Water Treatment,2006,32(1):10-13,17. |
| |
| Authors: | Xiang Bo Li Yi-jiu Feng Sheng |
| |
| Affiliation: | Department of Chemistry, Ton~i University, Shanghai 200092, China |
| |
| Abstract: | Chitisan(CTS) was modified to prepare a new adsorbent for heavy metal ions,dithiocarbamate-modified chitisan(DTC-CTS).Several factors affecting the synthesis process of DTC-CTS,such as reacting medium,concentration of reactants,alkalinity,reacting temperature,reacting time,and reacting rate,were investigated,and a suitable preparing process for DTC-CTS was obtained.Compared to CTS,the adsorption properties of DTC-CTS for heavy metals were studied in this paper,and results from these experiments showed that DTC-CTS could adsorb heavy metals from aqueous solutions in a wider pH range,with larger adsorption amounts.So DTC-CTS could be regarded as a promising adsorbent for heavy metal removal from wastewater. |
| |
| Keywords: | chitisan modified heavy metal synthesis adsorption |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
