摘要：水体中的主要的营养因子之一便是磷，而且吸附便是磷在土壤中的主要存在方式。而造成水体富营养化的重要原因由土壤中的磷进入水体而造成的。本文以连云港市赣榆县的土壤为研究对象，对其中磷进行吸附实验研究，这样可以清楚地了解水体富营养化的过程，同时也对控制水体的富营养化具有十分重要的意义。本文使用连云港市菜地、麦地两种土壤进行研究，分别对其进行等温吸附及吸附动力学研究，并对实验数据进行拟合分析，最后对拟合结果进行分析处理。研究结果表明：（1）在赣榆县的供试土壤中，麦地土的最大吸附量要高于菜地土；（2）麦地土及菜地土的吸附及解析速率都是呈降低趋势，且赣榆县麦地土在相同时间内对磷的吸附和解析量要高于菜地土；（3）弗雷德利希等温式能够较好的模拟赣榆县供试土壤对磷的等温吸附规律；（4）准二级方程可以较好的模拟赣榆县供试土壤对磷的吸附动力学规律。40313
毕业论文关键词：土壤磷；等温吸附；吸附动力学
Experimental Study on the vegetable and wheat soil of Phosphorus Adsorption of Lianyungang
Abstract: Phosphorus is the main controlling factor of nutrition in water, and the main existing forms of phosphorus in the soil is by adsorption . The major cause of eutrophication is the phosphorus which comes into the water from the soil . So the study of the phosphorus adsorption about the soil in Lianyungang , is of great significance to understand the process of occurrence of eutrophication and control of eutrophication . In this paper, Lianyungang vegetable and Wheat soil are as the research object , and use them to study on isothermal adsorption and kinetics of adsorption , and fitting and analysing the experimental data , at the end , the fitting results are analyzed . The results show：(1)The maximum adsorption capacity of the wheat soil is higher than that of the vegetable Soils (2) The adsorption rate of the vegetable and wheat soil of Lianyungang are decreased with the increase of time; And the adsorption rate of wheat soil is higher than that of  vegetable soil ; (3) The Freundlich isotherm can better simulate the isothermal adsorption law of wheat and vegetable soil of phosphorus ; (4) The quasi two level model can better simulate the adsorption kinetics of tested wheat and vegetable soil of phosphorus .
Key Words：Soil phosphorus; Isothermal adsorption; Adsorption Dynamics
目录
1 研究背景    1
1.1 研究意义    1
1.2 土壤吸磷研究现状    1
2 研究区状况    2
2.1 地理位置    2
2.2 水文气象    3
3 实验材料与实验方法    3
3.1 样品的采集    3
3.2 实验方法    4
3.2.1试剂与仪器    4
3.2.2 磷的标准曲线的绘制    4
3.3 吸附实验    5
3.3.1 土壤对磷的等温吸附实验    5
3.3.2 土壤对磷的吸附动力学实验    5
4 供试土壤对磷的等温吸附分析    5
4.1 等温吸附模型介绍    5
4.1.1 朗格缪尔方程    5
4.1.2 弗雷德利希等温式    5
4.2 拟合结果与分析    6
4.2.1 数据处理    6
4.2.2 模型拟合    7
5 供试土壤对磷的吸附动力学分析    9
5.1 吸附动力学方程介绍    9
5.1.1 准二级方程    9
5.1.2 Elovich方程    10
5.1.3 抛物扩散方程    10
5.1.3 幂函数方程    10
5.2 结果与分析    10
5.2.1 数据处理    10 连云港菜地与麦地土壤对磷吸附的实验研究:http://www.751com.cn/huaxue/lunwen_38590.html