改性水辉石用于镉污染土壤修复研究及应用

Research and Application of Modified Hectorite for Cadmium Contaminated Soil Remediation

摘要: 本文重点阐述了用多硫化钙对水辉石进行改性处理，对改性水辉石去除土壤镉的修复剂的生产方法和条件进行了研究，通过实验发现，将水辉石在300℃下煅烧4小时后，加入多硫化钙溶液，然后于300℃恒温条件下搅拌反应3小时，通过改性后的水辉石进行镉土壤修复，镉的吸附率可以达到86.1%，吸附效果达到最佳。

Abstract: This paper focuses on the modification of hectorite with calcium polysulfide. The production methods and conditions of the repair agent for removing cadmium from soil by modified hectorite have been studied. It was found through experiments that after hectorite was calcined at 300˚C for 4 hours, calcium polysulfide solution was added, and then the reaction was stirred at 300˚C for 3 hours. The modified hectorite was used for cadmium soil remediation. The adsorption rate of cadmium reached 86.1%, and the adsorption effect was optimal.