摘要
为了完善农田耕地土壤Cd污染"磁性固体螯合材料-农机磁选移除"技术,获取相关技术参数,文章采用室内盆栽模拟方法,研究了投料后磁性固体螯合材料在土壤耕层垂直分布以及基于移除效果的最佳材料投加量。结果表明:磁性固体螯合材料施入水田土壤后,经搅拌后,在耕层是均匀分布;固体螯合材料投加量为0.40%时,土壤总Cd、DTPA-Cd和HCl-Cd移除率达到最大,增加投加量土壤Cd移除率趋于稳定。因此,设计的回收机械应考虑在整个耕层回收材料,0.4%的最佳螯合材料投加量以及该投加量是否有利于磁选回收,还需要农机在大田实验验证。
In order to improve the ＂magnetic solid chelator（MSC）-agricultural machinery magnetic separation＂technology involving adding of MSC into soil for remediation of Cd-polluted farmland soil, the analogy procedure by means of pot experiment was conducted to characterize MSC vertical distribution in the soil and determine the optimum dosage of MSC. The experimental result indicated that the MSC could be uniformly distributed in the soil after being mixed; as MSC dosing amount was 0.40%, removal rates of total Cd, DTPA-Cd and HCl-Cd from soil reached the maximum, and Cd removal rate tended to be steady as the dosing amount of MSC increased.
作者
欧阳光明
聂新星
刘骏龙
刘路
周洋
杨利
范先鹏
范力仁
OUYANG Guangming1,3, NIE Xinxing2,4, LIU Junlong3, LIU Lu1,3, ZHOU Yang1,3, YANG Li2,4, FAN Xianpeng2,4, FAN Liren1,3.(1. CUG Golden Shield Environmental Technology Co, LTD, Wuhan, 430073, China; 2. Institute of Plant Protection, Soils and Fertilizers Sciences, Hubei Academy of Agricultural Sciences, Wuhan 430064, China; 3. China University of Geosciences-Wuhan, Wuhan 430074, China; 4. Qianjiang Scientific Observing and Experimental Station of Agro-environment and Arable Land Conservation of the Ministry of Agriculture, Qiangjiang 433116, Chin)
出处
《环境科学与技术》
CAS
CSCD
北大核心
2018年第4期122-126,共5页
Environmental Science & Technology
基金
国家重点研发计划(2016YFD0801005)
国家"863"项目基金(2011AA100503)
催化材料科学湖北省重点实验室开放基金资助项目(CHCL06008)
湖北省农业科学院竞争性项目(2015JZXJH07)
湖北省农科院扶持性计划项目(2014fcxjh06)
