摘要
通过研究乌粱素海不同粒径沉积物对磷的吸附等温曲线,模拟了乌粱素海不同粒级沉积物对磷的吸附过程。由此得知Langmuir模型和Freundlich模型均能较好地拟合乌粱素海不同粒级沉积物对磷的等温吸附曲线;吸附量由大到小的顺序为：〈63μm、63~125μm、125~250μm、〉250μm。环境因素对土壤磷吸附有很大的影响,沉积物对磷的吸附是吸热反应,温度升高,有利于沉积物对磷的吸附;沉积物对磷的吸附有浓度效应,吸磷量随沉积物浓度增加而增大;强酸条件下乌粱素海沉积物对磷的吸附量较小,总体上吸附量随pH值升高递增。
Through studying the phosphorus adsorption isotherm curve of sediment with different particle sizes of Wuliangsuhai Lake,its phosphorus adsorption processes was studied.The result shows that both the Langmuir model and Freundlich models can better fit the phosphorus adsorption isothermal curve of the sediments with different particles size level of Wuliangsuhai Lake.The order of adsorption quantity from large to small is 63 μm,63~125 μm,125~250 μm,250 μm.The environmental factor has large influence on the phosphorus adsorption of sediment.The phosphorus adsorption is endothermic reaction and the increase of temperature is in favor of the phosphorus adsorption of the sediment.The phosphorus adsorption of the sediment has concentration effect.The phosphorus adsorption quantity increases with the increase of the sediment concentration.Under acid condition,the phosphorus adsorption quantity of Wuliangsuhai sediment is less.It increases with the increase of the PH value.
出处
《节水灌溉》
北大核心
2011年第6期37-40,共4页
Water Saving Irrigation
基金
国家自然科学基金项目(50969005)
内蒙古自然科学基金重点项目(200711020604)
内蒙古自治区水利厅重点支持项目(20080105)
内蒙古自治区"十一五"科技攻关项目
关键词
沉积物
吸附
粒径
乌梁素海
影响因素
surface sediment
sorption
particle size fraction
Wuliangsuhai Lake
influencing factor
