| 竹炭负载壳聚糖对 Zn2+吸附动力学及其机制分析 |
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| 引用本文： | 张文标,李文珠,金首文,陈斌,任红星,孙进.竹炭负载壳聚糖对 Zn2+吸附动力学及其机制分析[J].浙江农林大学学报,2010,27(5):641-645. |
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| 作者姓名： | 张文标 李文珠 金首文 陈斌 任红星 孙进 |
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| 作者单位： | 1.浙江农林大学 工程学院 国家木质资源综合利用工程技术中心，浙江 临安 311300;2.浙江农林大学 理学院，浙江 临安 311300;3.浙江农林大学 环境科技学院，浙江 临安 311300;4.宁波天韵生态治理工程有限公司，浙江 宁波 315192 |
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| 摘 要： | 以竹炭粉和壳聚糖为原料，制备竹炭/壳聚糖复合吸附剂，进行扫描电镜（吸收光谱SEM）、红外吸收（FTIR）、X-射线衍射（XRD）等图谱表征，并进行Zn2+吸附试验。结果表明:①壳聚糖较好地负载在竹炭上，凸凹不平明显，蜂窝增强；复合吸附剂对Zn2+的吸附率在80 min后达到93%。②竹炭/壳聚糖复合吸附剂对Zn2+吸附过程的动力学表明，吸附过程符合多孔结构的吸附特征，方程拟合结果更符合二级动力学模型。③Zn2+吸附前后的红外吸收图谱表明，与竹炭/壳聚糖复合吸附剂吸附配位主要发生在NH2中的氮原子、OH和C＝O中氧原子上。图9参11
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| 关 键 词： | 竹炭/壳聚糖 吸附Zn2+ 反应动力学 机制 |
| 收稿时间： | 1900-01-01; |
Adsorption kinetics with Zn2+ on bamboo charcoal loaded with chitosan |
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| ZHANG Wen-biao,LI Wen-zhu,JIN Shou-wen,CHEN Bin,REN Hong-xing,SUN Jin.Adsorption kinetics with Zn2+ on bamboo charcoal loaded with chitosan[J].Journal of Zhejiang A&F University,2010,27(5):641-645. |
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| Authors: | ZHANG Wen-biao LI Wen-zhu JIN Shou-wen CHEN Bin REN Hong-xing SUN Jin |
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| Affiliation: | 1.National Engineering and Technology Research Center of Wood-Based Resources Comprehensive Utilization， School of Engineering，Zhejiang A & F University，Lin’an 311300，Zhejiang，China;2.School of Sciences，Zhejiang A & F University，Lin’an 311300，Zhejiang，China;3.School of Environment Science and Technology，Zhejiang A & F University，Lin’an 311300，Zhejiang，China;4.Ningbo Tianyun Ecological Engineering Co.，Ltd.，Ningbo 315192，Zhejiang，China |
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| Abstract: | A compound absorbent was made from bamboo charcoal and chitosan （bamboo charcoal/chitosan-BCCTS）. Then the compound was characterized with a Scanning Electron Microscope（SEM），a Fourier Transform Infrared（FTIR） spectrometer，and X-ray diffraction（XRD）. Using BCCTS as the absorption reagent，adsorption to Zn2+ was studied. Results showed that：（1） chitosan was efficiently loaded onto bamboo charcoal forming an increased，but uneven，honeycomb structure with an absorption reagent rate up to 93%. （2） Adsorption characteristics matched those of a vesicular structure with simulation results producing a second order kinetic equation. （3） Comparing the infrared absorption spectrogram results of Zn2+ before and after absorption showed that adsorption sites for Zn2+ on the bamboo charcoal/chitosan absorbent were mainly located at N atoms in —NH2 and O atoms in —OH and C O groups.［Ch，9 fig. 11 ref.］ |
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| Keywords: | bamboo charcoal/chitosan 2+ ionabsorption of Zn2+ ion absorption kinetics mechanism |
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