| 蛭石氨氮吸附量与起始溶液浓度和介质用量的函数关系 |
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| 引用本文： | 吴晓芙,胡日利,聂发辉,王 平,李科林.蛭石氨氮吸附量与起始溶液浓度和介质用量的函数关系[J].环境科学研究,2005,18(1):64-66. |
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| 作者姓名： | 吴晓芙 胡日利 聂发辉 王 平 李科林 |
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| 作者单位： | 中南林学院,湖南,株洲,412006 |
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| 基金项目： | 中挪政府间技术合作项目(国科外字[1996]339)，湖南省教育厅2004年产业化研究项目 |
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| 摘 要： | 测定了给定pH和温度条件下反应平衡时NH4Cl溶液中蛭石的氨氮吸附量。结果显示，平衡时蛭石的氨氮吸附量Qe与溶液起始的氨氮质量浓度C和单位体积溶液的介质用量W的函数关系可用Langmuir方程描述，其等温吸附通式为：Qe=qmCW／qm(Kw W) C]。式中，单位介质吸附容量qm和介质系数Kw是独立于C和W的常数；qm代表介质对溶质的吸附能力；Kw代表介质与氨氮的亲和力。
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| 关 键 词： | 蛭石 氨氮 吸附等温曲线 浓度系数 介质系数 吸附容量 |
| 文章编号： | 1001-6929(2005)01-0064-03 |
| 收稿时间： | 2004/9/27 0:00:00 |
Sorption of NH4+-N by Vermiculite Minerals as a Function of Initial Solution Concentration and Sorbent Quantity |
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| WU Xiao-fu,HU Yue-li,NIE Fa-hui,WANG Ping and LI Ke-lin.Sorption of NH4+-N by Vermiculite Minerals as a Function of Initial Solution Concentration and Sorbent Quantity[J].Research of Environmental Sciences,2005,18(1):64-66. |
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| Authors: | WU Xiao-fu HU Yue-li NIE Fa-hui WANG Ping and LI Ke-lin |
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| Institution: | Central South Forestry University, Zhuzhou 412006, China;Central South Forestry University, Zhuzhou 412006, China;Central South Forestry University, Zhuzhou 412006, China;Central South Forestry University, Zhuzhou 412006, China;Central South Forestry University, Zhuzhou 412006, China |
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| Abstract: | Tests were conducted to measure the quantity of NH~+_4-N sorption at equilibrium by vermiculite minerals in NH_4Cl solution under constant pH and temperature conditions with objective to providing theoretical argument and as well basic parameters for use of vermiculite to remove NH~+_4-N in wastewater treatment. Analytical results showed that the relation of NH~+_4-N sorption quantity by vermiculite minerals at equilibrium Q_e with initial solution NH~+_4-N concentration C and sorbent quantity W can be described using Langmuir equation, with a common thermal sorption form: Q_e = q_mCW/q_m(K_W+W) +C]. The maximum sorption quantity per unit sorbent q_m and the medium coefficient K_W are constant terms independent of both C and W, of which q_m represents unit medium sorption capacity while K_W reflects the affinity of sorbent to NH~+_4-N. |
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| Keywords: | vermiculite NH~+_4-N thermal sorption curve concentration coefficient medium coefficient sorption capacity |
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