| 木屑活性炭的制备及其对水中酸性红的吸附研究 |
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| 引用本文： | 黄宏霞,徐运清,余丹萍.木屑活性炭的制备及其对水中酸性红的吸附研究[J].孝感师专学报,2013(6):75-78. |
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| 作者姓名： | 黄宏霞 徐运清 余丹萍 |
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| 作者单位： | 湖北工程学院生命科学技术学院,湖北孝感432000;特色果蔬质量安全控制湖北省重点实验室湖北孝感432000 |
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| 基金项目： | 湖北省小城镇发展研究中心开放科研项目（2007k710）;湖北工程学院科研项目（z2008020） |
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| 摘 要： | 运用磷酸浸渍硼酸催化法制备木屑活性炭,并进行了其对水中酸性红的平衡吸附实验.研究结果表明木屑活性炭制备的最佳工艺条件为：磷屑比为1：1,硼酸投加量为3％,活化温度为400℃,该条件下所制备的生物活性炭对酸性红的理论最大吸附量可达到442.40mg/g.相对于Freundlich方程,该活性炭对酸性红的吸附等温线与Langmuir方程拟合的更好.当吸附时间达到2h时活性炭吸附达到平衡,吸附过程能较好的拟合准二级动力学方程,吸附以化学吸附为主.
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| 关 键 词： | 木屑活性炭 磷酸活化 硼酸催化 吸附 酸性红 |
Sawdust Activated Carbon Preparation and Its Adsorption of Acid Red in Solution |
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| Huang Hongxia Xu Yunqing Yu Danping.Sawdust Activated Carbon Preparation and Its Adsorption of Acid Red in Solution[J].Journal of Xiaogan University,2013(6):75-78. |
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| Authors: | Huang Hongxia Xu Yunqing Yu Danping |
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| Institution: | Huang Hongxia Xu Yunqing Yu Danping(1. School of Life Science and Technology, Hubei Engineering University, Xiaogan , Hubei 432000, China ; 2. Hubei Key Laboratory of Quality Control of Characteristic Fruits and Vegetables, Hubei Engineering University, Xiaogan, Hubei 432000, China) |
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| Abstract: | Sawdust activated carbon was prepared by means of phosphoric acid dipping and boric acid catalysis and experiment was conducted on its equilibrium adsorption of acid red in solution. Results indicated the optimum conditions for sawdust activated carbon preparation, namely the ratio between sawdust and phosphoric acid should be 1 ： 1, boric acid dosing quantity of 3 %, the activation temperature 400℃. Theoretically, the maximum adsorption capacity of acid red could reach as much as 442. 40 mg/g by sawdust activated carbon prepared under the optimum condition. Compared with the Fre- undlich equation, the activated carbon adsorption isotherm of acid red fitted better with Langmuir e- quation. When the time was 2 hours, the adsorption reached equilibrium, and the adsorption process could fit the quasi secondary dynamics equation well. In addition, the adsorption was mainly chemical. |
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| Keywords: | sawdust activated carbon phosphoric acid activation boric acid catalysis adsorption acid red |
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