| 河口区稻田退水后沟渠底泥氨氮的吸附行为 |
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| 引用本文： | 季现超,李海波,余艳艳,段玉龙,王士满.河口区稻田退水后沟渠底泥氨氮的吸附行为[J].中国农学通报,2015,31(32):148-153. |
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| 作者姓名： | 季现超 李海波 余艳艳 段玉龙 王士满 |
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| 作者单位： | (;1.沈阳大学污染环境生态修复与资源化技术教育部重点实验室,沈阳 110044；;2.东北大学资源与土木工程学院,沈阳 110004） |
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| 基金项目： | 国家重大水专项“河口区稻田生产区氮磷面源污染控制技术与示范”(2014ZX07201-009-04)；辽宁省科技计划“辽河口稻田-苇田交错区面源污染阻控关键技术研究与示范”(2013229012)。 |
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| 摘 要： | 沉积物对氨氮吸附行为是河口区沟渠生态系统氮迁移转化过程的一个重要环节。运用试验模拟的方法，研究沟渠沉积物对氨氮的吸附动力学试验、等温吸附试验及其影响氨氮吸附的因素。结果表明：沟渠沉积物对氨氮的吸附存在快慢吸附2个阶段，其中快吸附阶段在2 h内完成，慢吸附阶段在6 h内完成，6 h后沉积物对氨氮吸附达到平衡；沉积物吸附氨氮的等温吸附呈现良好的线性关系，其中Langmuir模型等温吸附结果的拟合性较好。由此可见，干渠沉积物对氨氮的吸附能力高于农沟；有机质、铁锰对沉积物吸附氨氮均存在着不同程度的影响，随着有机质含量和铁锰的增高，沉积物对氨氮的吸附量随之增加。
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| 关 键 词： | 太湖新银鱼 太湖新银鱼 肌肉 营养成分 营养评价 陆浑水库 |
| 收稿时间： | 2015/6/14 0:00:00 |
| 修稿时间： | 2015/7/20 0:00:00 |
Ammonia and Nitrogen Adsorption Behavior of Ditch Sediment After Paddy Field Water-break in Estuary |
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| Ji Xianchao,Li haibo,Yu Yanyan,Duan Yulong and Wang Shiman.Ammonia and Nitrogen Adsorption Behavior of Ditch Sediment After Paddy Field Water-break in Estuary[J].Chinese Agricultural Science Bulletin,2015,31(32):148-153. |
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| Authors: | Ji Xianchao Li haibo Yu Yanyan Duan Yulong and Wang Shiman |
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| Institution: | (;1.Key Laboratory of Eco-Remediation and Resource Reuse, Ministry of Education, Shenyang University, Shenyang 110044;2.Resources and Civil Engineering Institute, Northeastern University, Shenyang 110004) |
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| Abstract: | Adsorption behavior of sediments on ammonia and nitrogen is an important part of nitrogen transformation process of ditch-ecosystem in estuary. Adsorption kinetics experiment, isothermal adsorption experiment and the influencing factors of the adsorption behavior of sediments on ammonia and nitrogen were studied by simulation tests. The results showed that: the process of ammonium adsorption by sediments mainly had two stages which were fast stage and slow stage, the fast stage could complete within 2 h, and the slow stage could complete within 6 h, the adsorption behavior reached balance after 6 h; isothermal adsorption of ammonia nitrogen by sediments showed a good linear relation, the fitting results of Langmuir model was good. Thus it could be seen, the adsorption ability of trunk canal sediments on ammonia nitrogen was higher than that of agriculture ditch; organic matter, iron and manganese could affect the adsorption behavior in different degrees, and the adsorbing capacity increased with the increase of organic matter, iron and manganese. |
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| Keywords: | ditch sediment ammonia nitrogen adsorption influencing factor |
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