| 碳纳米管-海藻酸钠复合吸附材料的制备及其对高浓度Cr（Ⅲ）的吸附 |
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| 引用本文： | 陈一萍,黄耀裔.碳纳米管-海藻酸钠复合吸附材料的制备及其对高浓度Cr（Ⅲ）的吸附[J].化工环保,2014,34(4):394-397. |
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| 作者姓名： | 陈一萍 黄耀裔 |
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| 作者单位： | 泉州师范学院 资源与环境学院，福建 泉州 362000 |
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| 基金项目： | 福建省教育厅A类科技项目（JA12281）；福建省高校服务海西建设重点项目（A102）；泉州市科技局项目（2012Z117） |
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| 摘 要： | 以碳纳米管（CNTs）和海藻酸钠（SA）为主要原料，制备了环境友好型的复合吸附材料——CNTs-SA。采用TEM和FTIR技术对吸附材料进行了表征，并采用静态法考察了溶液pH、吸附时间、原料固液比（m（CNTs）∶V（SA））等因素对CNTs-SA吸附Cr（Ⅲ）的影响。表征结果显示，CNTs-SA表面引入了更多的—COOH和—CO基团，导致其吸附Cr（Ⅲ）的效果较CNTs有了显著的提高。实验结果表明：在室温、初始Cr（Ⅲ）质量浓度4 000 mg/L、CNTs-SA加入量21 mg/mL、溶液pH 5、吸附时间3 h、m（CNTs）∶V（SA）=1.0 mg/mL的条件下，CNTs-SA对Cr（Ⅲ）的吸附量为120 mg/g，Cr（Ⅲ）去除率为61.5%;Freundlich等温吸附方程适合描述CNTs-SA对Cr（Ⅲ）的吸附行为。
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| 关 键 词： | 碳纳米管 海藻酸钠 吸附剂 高浓度含铬废水 |
| 收稿时间： | 2014-01-04 |
Preparation of CNTs-SA Composite Adsorbent and Adsorption of High Concentration Cr(Ⅲ) |
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| Chen Yiping,Huang Yaoyi.Preparation of CNTs-SA Composite Adsorbent and Adsorption of High Concentration Cr(Ⅲ)[J].Environmental Protection of Chemical Industry,2014,34(4):394-397. |
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| Authors: | Chen Yiping Huang Yaoyi |
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| Affiliation: | College of Resources and Environment,Quanzhou Normal University,Quanzhou Fujian 362000,China |
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| Abstract: | The environment friendly composite adsorbent CNTs-SA was prepared using carbon nano-tubes(CNTs) and sodium alginate(SA) as raw materials，and was characterized by TEM and FTIR. The factors affecting the adsorption of Cr(Ⅲ) on CNTs-SA were studied by static adsorption method. The characterization results show that CNTs-SA surface has more —COOH and —CO groups than CNTs，which greatly improve the Cr(Ⅲ) adsorption effect. The experimental results show that：Under the conditions of room temperature，initial Cr(Ⅲ) mass concentration 4 000 mg/L，CNTs-SA dosage 21 mg/mL，solution pH 5，adsorption time 3 h and m(CNTs)∶V(SA)=1.0 mg/mL，the Cr(Ⅲ) adsorption capacity of CNTs-SA is 120 mg/g，and the Cr(Ⅲ) removal rate is 61.5%;The adsorption process fits well to Freundlich isotherm adsorption equation. |
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| Keywords: | carbon nano-tube sodium alginate adsorbent high concentration chromium containing wastewater |
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