| abstract |
The invention discloses an amorphous iron-manganese colloidal material and its preparation and application. The preparation method of the amorphous iron-manganese colloidal material is as follows: mixing the leaching solution of the spent grains with iron salt and manganese salt, adjusting the pH, and then mixing and reacting to obtain it, preferably the leaching solution of the spent grains is obtained by ball milling and hydrothermal reaction. The method has low energy consumption, short preparation period, simple and controllable method, and can realize large-scale programmed production. The prepared amorphous iron-manganese colloidal material has good migration performance, and can be applied to soil arsenic and antimony pollution in situ simultaneously. Stabilized remediation, adding remediation materials to the actual arsenic and antimony composite polluted site soil, the immobilization rate of water-soluble arsenic and antimony can reach 100%, and the immobilization rate of effective arsenic and antimony can reach 82.54% and 52.59%, respectively. |