| 纳米SiO_2-壳聚糖复合膜对甲基橙的吸附脱色研究 |
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| 引用本文： | 周婷,王华丽,朱华跃,蒋茹. 纳米SiO_2-壳聚糖复合膜对甲基橙的吸附脱色研究[J]. 安徽农业科学, 2011, 39(4): 2344-2347,2392 |
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| 作者姓名： | 周婷 王华丽 朱华跃 蒋茹 |
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| 作者单位： | 台州学院环境工程系,浙江台州,317000 |
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| 基金项目： | 台州学院博士科研启动基金项目 |
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| 摘 要： | [目的]评估纳米SiO2-壳聚糖复合膜对甲基橙的吸附脱色效果。[方法]研究不同吸附剂、复合膜投加量、甲基橙初始浓度、pH值、无机盐类等条件对甲基橙脱色效果的影响。[结果]在复合膜质量浓度为1 g/L条件下,对10 mg/L、pH为2.88的甲基橙的最高脱色率可达100%。无机盐类（Cl-、NO2-、NO3-、PO43-、CO32-）对脱色效果都具有较强的抑制作用;拟二级动力学模型能很好地描述整个吸附过程,分子内扩散模型是其中一个限速步骤;吸附等温线符合Langmuir模型。[结论]将壳聚糖负载于纳米SiO2表面,对壳聚糖吸附甲基橙具有一定的促进作用,可提高壳聚糖的利用价值。
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| 关 键 词： | 甲基橙 壳聚糖 纳米SiO2 吸附脱色 |
Study on Adsorption and Decolorization Effect of Nano-SiO_2-Chitosan Composite Films on Methyl Orange |
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| ZHOU Ting et al. Study on Adsorption and Decolorization Effect of Nano-SiO_2-Chitosan Composite Films on Methyl Orange[J]. Journal of Anhui Agricultural Sciences, 2011, 39(4): 2344-2347,2392 |
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| Authors: | ZHOU Ting et al |
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| Affiliation: | ZHOU Ting et al(Department of Environmental Engineering,Taizhou College,Taizhou,Zhejiang 317000) |
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| Abstract: | [Objective] The study aimed to evaluate the adsorption and decolorization effect of nano-SiO2-chitosan composite films on methyl orange.[Method] The effect of different absorbents,composite films dosage,initial concentration of methyl orange,pH value and inorganic salts on the decolourization of methyl orange was studied.[Results] The highest decolourization ratio of methyl arange was 100% with the concentration of 1 g/L and pH value of 2.88 under the condition of 1 g/L composite films.Inorganic salt(Cl-,NO... |
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| Keywords: | Methyl orange Chitosan Nano-SiO2 Adsorption and decolorization |
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