| 硅质壳及硅藻土对亚甲基蓝吸附性能比较 |
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| 引用本文： | 王丰喜, 倪佩军, 刘张敏, 邓湘云. 硅质壳及硅藻土对亚甲基蓝吸附性能比较[J]. 环境工程学报, 2016, 10(4): 1693-1698. doi: 10.12030/j.cjee.20160418 |
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| 作者姓名： | 王丰喜 倪佩军 刘张敏 邓湘云 |
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| 作者单位： | 1. 海南大学热带岛屿资源先进材料教育部重点实验室, 海口 570228; 2. 天津师范大学物理与材料科学学院, 天津 300387 |
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| 基金项目： | 国家高技术研究发展计划(863)项目(2012AA03A610) |
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| 摘 要： | 采用硅质壳和硅藻土作为吸附剂去除溶液中纺织染料亚甲基蓝,探讨了吸附剂用量对吸附脱色的影响。结果显示,当硅质壳投入量为0.5 g/L,该吸附剂对亚甲基蓝的去除率可达90%。实验结果表明,硅质壳和硅藻土对亚甲基蓝的吸附符合Langmuir等温模型和伪二级动力学模型,最大吸附量分别为150.376 mg/g和15.131 mg/g。热力学研究表明,硅质壳和硅藻土对亚甲基蓝的吸附是一自发、放热过程。
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| 关 键 词： | 硅质壳 硅藻土 亚甲基蓝 吸附 |
| 收稿时间： | 2015-01-21 |
Comparison on adsorption of methylene blue using frustules and diatomite |
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| Wang Fengxi, Ni Peijun, Liu Zhangmin, Deng Xiangyun. Comparison on adsorption of methylene blue using frustules and diatomite[J]. Chinese Journal of Environmental Engineering, 2016, 10(4): 1693-1698. doi: 10.12030/j.cjee.20160418 |
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| Authors: | Wang Fengxi Ni Peijun Liu Zhangmin Deng Xiangyun |
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| Affiliation: | 1. Key Laboratory of Ministry of Education for Advanced Material in Tropical Island Resources, Hainan University, Haikou 570228, China; 2. College of Physics and Materials Science, Tianjin Normal University, Tianjin 300387, China |
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| Abstract: | Frustules and diatomite were utilized as adsorbents for the removal of textile dye methylene blue.The effect of sorbent dosage on the removal efficiency of methylene blue was investigated.The experimental results showed that the removal efficiency of methylene blue could reach up to 90% with a frustule dosage of 0.5 g/L.The adsorption process could be described well by the pseudo-second-order kinetic model and Langmuir model.The maximum adsorption capacities were 150.376 and 15.131 mg/g, respectively.Thermodynamic experiments indicated that the adsorption of methylene blue on frustules and diatomite is a spontaneous and exothermic process. |
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| Keywords: | frustules diatomite methylene blue adsorption |
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