摘要
[目的]比较不同配比材料对土壤中砷的稳定化效果,获取优化配方和参数。[方法]通过4因素3水平正交试验条件比较硫酸-硝酸法浸出砷的浓度。[结果]最佳复合材料配方为硫酸亚铁∶腐殖酸∶凹凸棒土∶石灰的比例为3∶1∶1∶1或3∶1∶2∶1,对As浸出率的贡献影响因素排名分别是硫酸亚铁>腐殖酸>凹凸棒土=石灰。[结论]结果可为类似污染土壤修复提供依据。
[Objective]Compare the stabilization effects of different proportioning materials on arsenic in the soil,and obtain optimized formulas and parameters.[Method]The concentrations of arsenic leached by sulfuric acid-nitric acid method under the conditions of 4 factors and 3 levels orthogonal test were compared.[Result]The best composite material formula was the ratio of ferrous sulfate humic acid:attapulgite:lime is 3∶1∶1∶1 or 3∶1∶2∶1,and the ranking of the contributing factors to the As leaching rate were ferrous sulfate>humic acid>attapulgite=lime.[Conclusion]This result can provide a basis for the remediation of similar contaminated soil.
作者
李武楠
马栋
姚丽华
孟飞
俞栋
LI Wu-nan;MA Dong;YAO Li-hua(Hangzhou Keyun Environmental Technology Co.,Ltd.,Hangzhou,Zhejiang 310000)
出处
《安徽农业科学》
CAS
2021年第22期100-101,109,共3页
Journal of Anhui Agricultural Sciences
关键词
复合材料
稳定化
砷
土壤
浸出
Composite materials
Stabilization
Arsenic
Soil
Leaching
