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| 复合改性半炭化纤维对敌磺钠的吸附 |
| Adsorption of Fenaminosulf by Composite Modified Semi carbonized Fiber |
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| DOI： |
| 中文关键词: 半炭化纤维 复合改性 敌磺钠 吸附 水处理 |
| 英文关键词: Semi carbonized fiber Composite modification Fenaminosulf Adsorption Water treatment |
| 基金项目:国家自然科学基金资助项目（41271244）；四川省科技厅基金资助项目（2018JY0224）；西华师范大学科研业务基金资助项目（18B023） |
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| 摘要点击次数: 28 |
| 全文下载次数: 15 |
| 中文摘要: |
| 采用十二烷基二甲基甜菜碱（BS）和壳聚糖（CS）对半炭化纤维（SF）进行单一改性，同时以海藻酸钠（SA）对单一改性SF进行复合改性，用批处理法研究敌磺钠在单一和复合改性SF上吸附的热力学和动力学特征，并分析pH值、离子强度和温度对敌磺钠吸附的影响。结果表明：不同改性SF对敌磺钠的吸附适用于Henry和Freundlich模型描述，相同条件下，改性植物SF比化学SF对敌磺钠吸附能力更强。各改性SF对敌磺钠的吸附过程符合准二级动力学模型，且表现为自发、吸热和熵增反应。在pH值为3、离子强度01 mol/L和 30 ℃时，改性SF对敌磺钠的吸附效果最佳。 |
| 英文摘要: |
| Semi carbonized fibers（SF） were single modified with dodecyl dimethyl betaine（BS） and chitosan（CS），and then the single modified SF was composite modified with sodium alginate（SA）. The thermodynamic and kinetic characteristics of single modified and composite modified SF adsorption of fenaminosulf were studied by batch processing，and the effects of pH value，ionic strength and temperature on the adsorption were analyzed. The results showed that the adsorption of fenaminosulf by different modified SF was applicable to the Henry and Freundlich models. Under the same conditions， modified plant SF had a stronger adsorption capacity for fenaminosulf then chemical SF. The adsorption process of fenaminosulf by different modified SF conformed to the quasi second order kinetic model， and presented a spontaneous， endothermic and entropy increasing reaction. When the pH value was 3， the ionic strength was 01 mol/L and the temperature was 30 ℃， modified SF had the best adsorption effect on fenaminosulf. |
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