Method for curing soil mercury with bacteria under anaerobic condition

A technology based on anaerobic conditions and bacteria, applied in the restoration of contaminated soil, etc., to achieve the effect of low treatment cost, simple process and large treatment range
CN104889153AInactive Publication Date: 2015-09-09XINJIANG INST OF ECOLOGY & GEOGRAPHY CHINESE ACAD OF SCI
9 Cites 6 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
XINJIANG INST OF ECOLOGY & GEOGRAPHY CHINESE ACAD OF SCI
Publication Date
2015-09-09
Estimated Expiration
Not applicable · inactive patent
Patent Text Reader

Abstract

The invention discloses a method for curing soil mercury with bacteria under the anaerobic condition. The method includes that Thauear selenatis, ATCC 55363 which can be used for dissimilatory reduction of sodium selenite is selected and is from ATCC (American type culture collection), the Thauear selenatis is transferred to a culture medium containing sodium selenite for culture so as to obtain a bacterial dissimilatory reduction metabolite, then mixed liquor containing the metabolite is added with sodium dodecyl sulfate, and finally the treated metabolite is added into elemental mercury contaminated soil for culture in an anaerobic workstation for several days prior to ending experiment. Under the condition of presence of sodium selenite, the anaerobic dissimilatory reduction metabolite is a good curing agent of mercury, the elemental mercury in soil can be cured into residual-form mercury so as to fix the soil mercury and repair soil mercury contamination, and the method is particularly applicable to repair of deep contaminated soil. The method is simple in process, convenient to operate, low in treatment cost, large in treatment range and free of secondary contamination.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to a method for bacterial solidification of soil mercury under anaerobic conditions, and belongs to the technical field of environmental protection soil purification treatment. Background technique

[0002] Mercury is the only liquid heavy metal at room temperature and is a global pollutant. Mercury is highly toxic and not bioavailable. Mercury vapor (elemental mercury) mainly causes damage to the lungs, central system, kidneys, etc., and can cause death in severe cases. Inorganic mercury (divalent mercury ions) mainly causes damage to the digestive tract, immune system and kidneys. Organic mercury (mainly methylmercury) is easily absorbed by the digestive tract, mainly causing neurotoxicity, brain and nervous system damage, and also has hereditary damage, so it is more toxic to pregnant women and fetuses.

[0003] The large-scale use of mercury in industry (mining metallurgy; chlor-alkali industry; production of fluorescent la...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More