Nano-manganese dioxide for removing underground water heavy metal pollution and preparation method of nano-manganese dioxide for removing underground water heavy metal pollution

Abstract

Disclosed are nano-manganese dioxide for removing underground water heavy metal pollution and a preparation method of the nano-manganese dioxide for removing underground water heavy metal pollution. The preparation method includes the steps of 1), inoculating one or more of Leptothrix discophora SS-1, Pseudomonas putida MnB1 and Bacillus sp SG-1 to a microbial growth medium and culturing at 25-30 DEG C; 2), centrifuging a mixture obtained in the step 1 to obtain a bacterial body and cleaning and precipitating the bacterial body; 3), inoculating the bacterial body obtained in the step 2 to a manganite culture medium and culturing at 25-30 DEG C; 4), adding MnCl2 and Na3VO4 into a product obtained in the step 3 and culturing at 28-30 DEG C so as to obtain black precipitate, namely the nano-manganese dioxide.

Description

technical field

[0001] The invention belongs to the technical field of groundwater pollution restoration, and in particular relates to nano manganese dioxide for removing heavy metal pollution from groundwater.

[0002] The present invention also relates to a preparation method of the above-mentioned nano manganese dioxide. Background technique

[0003] Groundwater is a natural resource for human beings to survive. However, with the rapid development of modern industry and agriculture, heavy metal-containing pesticides and fertilizers are used in large quantities, making the pollution of heavy metals in groundwater increasingly serious. Heavy metals cannot be biodegraded, but are easy to accumulate in organisms, and eventually enter the human body through the food chain, causing various diseases and abnormalities in the body. In order to fundamentally prevent heavy metals from entering the environment and food chain, heavy metal pollution in groundwater must be remediated. ...