Cd inhibition and pH improvement via a nano-submicron mineral-based soil conditioner
Cd contamination of rice in recent years has aroused a nationwide concern on the potential health risk to people in China.A significant increase of soil acidification in major Chinese croplands improves available Cd content by crops,and this further pushes a heavier burden on controlling Cd contamination.Therefore,it is urgent to find a workable and green way to control Cd contamination,i.e.decrease Cd content in rice,for people's health in China,as other countries in the world.From chemical and economic points,stabilizing/solidifying Cd may be a feasible way except in-situ ways such as removing it by the absorption of special plants and ex-situ ones such as removing the contaminated soil and treating it by special equipment.Then,it is very important how to choose a green solidifying agent.By simulating a rock-weathering process,a nano-submicron mineral-based soil conditioner(NSC)was prepared through environmentally-friendly hydrothermal reaction.The application of NSC not only decreased Cd content in rice,i.e.inhibited Cd absorption,and increased pH of the soil,but also improved the content of healthy nutrients such as organic matter,available Ca,available K,available P and available Si in the soil.The mechanism why NSC showed such good performance was also discussed in this study.
Cd inhibition pH improvement nano-submicron mineral-based soil conditioner
Shanke Liu Huan Li Cheng Han Xuebin Sheng Jianming Liu
Key Laboratory of Mineral Resources,Institute of Geology and Geophysics,Chinese Academy of Sciences Beijing University Of Agriculture;Zhongke Jiancheng Mineral Technology(Beijing)Co.Ltd Research Center of Eco-Environmental Sciences,Chinese Academy of Sciences
国内会议
合肥
英文
133-144
2018-10-01（万方平台首次上网日期，不代表论文的发表时间）