Search International and National Patent Collections
|1. (WO2017147981) HEAVY METAL CADMIUM DEACTIVATOR FOR ACTIVATING ACTIVITY OF SULFUR-REDUCING BACTERIA IN RICE FIELD SOIL, AND APPLICATION THEREOF|
|Applicants:||GUANGDONG INSTITUTE OF ECO-ENVIRONMENTAL SCIENCE & TECHNOLOGY
|Title:||HEAVY METAL CADMIUM DEACTIVATOR FOR ACTIVATING ACTIVITY OF SULFUR-REDUCING BACTERIA IN RICE FIELD SOIL, AND APPLICATION THEREOF|
The present invention relates to the field of environmental protection, and in particular to a heavy metal cadmium deactivator for activating the activity of sulfur-reducing bacteria in rice field soil, and an application thereof. The heavy metal cadmium deactivator is constituted by electron shuttles alone or electron shuttles and electron donors, but cannot be constituted by electron donors alone. The mass ratio of the electron donors to the electron shuttles is (1:3)-(1:8). The raw materials of the deactivator are widely available, and the deactivator can be easily prepared, is suitable for large-scale industrial production, and can be applied in the technical field of heavy metal pollution abatement. The present invention also provides a heavy metal cadmium deactivating method for activating the activity of microorganisms in rice field soil, such as sulfur-reducing bacteria. By applying the functional deactivator to rice field soil by means of the method, the activity of microorganisms, such as sulfur-reducing bacteria, can be activated, thereby accelerating the reduction process of sulfur and iron in soil to facilitate the fixation of cadmium; cadmium adsorption and accumulation in rice is reduced to achieve secure production in fields moderately or lightly polluted by cadmium. Moreover, the method will not retard the farming operations, and can be widely popularized.