【摘要】 原位钝化是修复重金属污染土壤的重要途径之一,通过钝化降低土壤中重金属有效态含量,从而减少重金属迁移及对植物的毒害。文章选用沼渣、牡蛎壳粉为原料,制备了一种有机-无机符合型沼渣土壤调理剂,研究这种土壤调理剂对水中的Cu²⁺吸附效果和对土壤中铜的钝化效果。研究表明:这种土壤调理剂对水中的Cu²⁺吸附效量能达到2.5 mg·g^-1。更多还原

【Abstract】 In-situ passivation is one of the important ways to remediate heavy metal contaminated soils. It can reduce the content of available heavy metals in soils,thereby reducing the damage degree from heavy metal to plants. A kind of organic-inorganic soil conditioner was prepared by using biogas residue and oyster shell powder as raw materials. The Cu²⁺ adsorption in water and copper passivation in soil by this soil conditioner were studied. The results showed that the Cu²⁺ adsorption efficiency of this soil conditioner in water could reach 2.5 mg·g^-1, and application in soil could improve the soil pH value and reducing the available Cu content significantly.更多还原