| 陈艺敏,陈建福.荔枝壳对Cr(VI)的吸附性能研究[J].井冈山大学自然版,2015,(3):49-53 |
| 荔枝壳对Cr(VI)的吸附性能研究 |
| Adsorption Properties of Lychee Exocarp on Cr(VI) |
| 投稿时间：2015-01-16 修订日期：2015-03-26 |
| DOI：10.3969/j.issn.1674-8085.2015.03.011 |
| 中文关键词: 荔枝壳 吸附 动力学 热力学 |
| 英文关键词: lychee exocarp adsorption kinetics thermodynamics |
| 基金项目:漳州职业技术学院科技计划项目(ZZY1412);漳州职业技术学院科技公共服务平台建设项目(ZZ2014078) |
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| 中文摘要: |
| 为考察荔枝壳对废水中Cr(VI)的吸附性能,用电镜对荔枝壳进行表征,并考察了pH、吸附剂用量、时间和温度对吸附性能的影响.结果表明荔枝壳表面粗糙、凹凸不平,对Cr(VI)具有较强的吸附能力.在温度25℃下,震荡吸附3 h,荔枝壳对Cr(VI)去除率可达91. 5%.荔枝壳对Cr(VI)吸附的动力学和热力学研究结果表明,该吸附过程符合准二级吸附动力学模型和Langmuir等温方程. |
| 英文摘要: |
| In order to investigate the adsorption properties of lychee exocarp on Cr(VI), the surface characteristics of lychee exocarp was revealed by SEM and the effects of pH, dosage, time and temperature on adsorption were investigated. The results indicated that the surface of lychee exocarp was rough and had strong adsorption ability to Cr(VI). At the temperature of 25℃, the removal efficiency of Cr(VI) reached 91. 5% after 3 hours. According to the results of kinetic and thermodynamic studies, the adsorption process was consistent with pseudo-second-order adsorption model and Langmuir isothermal equation. |
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