| 天然斜发沸石对溶液中NH4+的物化作用机理 |
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| 引用本文： | 温东辉,唐孝炎.天然斜发沸石对溶液中NH4+的物化作用机理[J].中国环境科学,2003,23(5):509-514. |
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| 作者姓名： | 温东辉 唐孝炎 |
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| 作者单位： | 北京大学环境学院环境科学系,北京,100871 |
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| 基金项目： | 科技部专项攻关课题(K99-05-35-02) |
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| 摘 要： | 选择中国浙江缙云天然斜发沸石为试验材料,以摇床试验和离子跟踪监测,研究了斜发沸石对溶质NH4+的物化作用机理.在天然斜发沸石对溶液中NH4+的作用过程中,离子交换作用决定了NH4+的全部转移量,沸石晶体内Na+和Ca2+与溶液中NH4+的交换量占总离子交换量的97%以上.对于粒径1.0~3.2mm的沸石,交换反应前3h时可完成83%的Na+交换量和50%的Ca2+交换量.
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| 关 键 词： | 天然斜发沸石 离子交换 吸附作用 |
| 文章编号： | 1000-6923(2003)05-0509-06 |
| 修稿时间： | 2003年1月8日 |
Mechanism for physical-chemical actions of natural zeolite on NH4* in solution |
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| WEN Dong-hui,TANG Xiao-yan.Mechanism for physical-chemical actions of natural zeolite on NH4* in solution[J].China Environmental Science,2003,23(5):509-514. |
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| Authors: | WEN Dong-hui TANG Xiao-yan |
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| Abstract: | Selecting the natural clinoptilolite of Jinyun County, Zhejiang Province, China, as experimental material, the mechanism for physical-chemical actions of the clinoptilolite on NH4+ in solution was studied with shaking bed test and ion tracing monitoring. In the presses of natural zeolite on NH4+ in solution, ion exchange action determined all the NH4+ changing amount. Exchange amount of Na+, Ca2+ in the zeolite crystal with NH4+ in solution occupied over 97% of the total ion exchanging amount. For the zeolite with particle size 1.0~3.2mm 83% Na+ exchanging amount and 50% Ca2+ exchanging amount were happened in the initial 3 hours. |
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| Keywords: | nature clinoptilolite ion exchange adsorption |
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