安徽农学通报
安徽農學通報
안휘농학통보
Anhui Agricultural Science Bulletin
2015年
20期
62-65
,共4页
黄壤%棕壤%Cr(VI)%吸附%酸度%温度
黃壤%棕壤%Cr(VI)%吸附%痠度%溫度
황양%종양%Cr(VI)%흡부%산도%온도
Yellow soil%Brown soil%Cr(VI)%Absorbs%Acidity%Temperature
通过振荡平衡法研究黄壤、棕壤对Cr（VI）的吸附行为，结果表明，在酸性条件下土壤对Cr（VI）的吸附量远高于碱性条件下的吸附量，随温度的升高黄壤、棕壤对Cr（VI）的吸附量增加。土壤本身理化性质不同，其对Cr（VI）的吸附量有很大差异；土壤吸附Cr（VI）量与游离铁铝氧化物及粘粒含量呈显著正相关，而与有机质及土壤pH值呈负相关。供试土壤等温吸附Cr（VI）量表现为黄壤＞棕壤。随着土壤有机质含量的增加，土壤Cr（VI）的等温吸附平衡浓度下降，对Cr（VI）的吸附能力下降。
通過振盪平衡法研究黃壤、棕壤對Cr（VI）的吸附行為，結果錶明，在痠性條件下土壤對Cr（VI）的吸附量遠高于堿性條件下的吸附量，隨溫度的升高黃壤、棕壤對Cr（VI）的吸附量增加。土壤本身理化性質不同，其對Cr（VI）的吸附量有很大差異；土壤吸附Cr（VI）量與遊離鐵鋁氧化物及粘粒含量呈顯著正相關，而與有機質及土壤pH值呈負相關。供試土壤等溫吸附Cr（VI）量錶現為黃壤＞棕壤。隨著土壤有機質含量的增加，土壤Cr（VI）的等溫吸附平衡濃度下降，對Cr（VI）的吸附能力下降。
통과진탕평형법연구황양、종양대Cr（VI）적흡부행위，결과표명，재산성조건하토양대Cr（VI）적흡부량원고우감성조건하적흡부량，수온도적승고황양、종양대Cr（VI）적흡부량증가。토양본신이화성질불동，기대Cr（VI）적흡부량유흔대차이；토양흡부Cr（VI）량여유리철려양화물급점립함량정현저정상관，이여유궤질급토양pH치정부상관。공시토양등온흡부Cr（VI）량표현위황양＞종양。수착토양유궤질함량적증가，토양Cr（VI）적등온흡부평형농도하강，대Cr（VI）적흡부능력하강。
We performed a series of oscillation equilibrium experiments to simulate the adsorption behavior of Cr (VI)for the yellow soil and brown soil. The results show that under a acidic soil conditions,adsorption of Cr(VI)is far higher than that of in alkaline conditions. The Cr(VI)adsorption of yellow soil and brown soil rise with the tem?perature. The physical and chemical properties of soil are different,and its adsorption of Cr(VI)will be a big differ?ence. Soil adsorption amount of Cr(VI)was significantly positively related to the free iron/aluminum oxide and clay content,and negative associative to organic matter and pH. The adsorption of Cr(VI)in the isothermal tested was yel?low soil>brown soil. With the increase of organic matter content,the concentration of Cr(VI)in the isothermal ad?sorption equilibrium experiments decreased,and the adsorption capacity of Cr(VI)was subdued too.
