Method for removing heavy metals in soil or plants by using triethylamine hydrogen sulfate ionic liquid
A technology of triethylamine hydrogen sulfate and ionic liquid, which is applied in the restoration of polluted soil and other directions, can solve the problems of low moisture tolerance, low thermal stability, high price, etc., and achieves cost control, simple process, and easy operation conditions. control effect
Active Publication Date: 2020-04-17
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AI-Extracted Technical Summary
Problems solved by technology
The invention relates to a method for removing heavy metals in soil or plants by using a triethylamine hydrogen sulfate ionic liquid ([TEA][HSO4]). The method comprises the following steps: slowly adding a concentrated sulfuric acid solution into a triethylamine solution at a constant low temperature; after mixing is finished, standing at the same temperature; removing residual moisture and amineby using a rotary evaporator to obtain a triethylamine hydrogen sulfate ionic liquid; and mixing heavy metal contaminated soil or plants and the obtained ionic liquid to remove heavy metals. Comparedwith the method in the prior art, the method of the invention is simple and clear in process, controllable in operation condition, excellent in cost benefit, remarkable in heavy metal removal effect and free of negative influence on a soil structure and an ecological system, wherein the ionic liquid has excellent recyclability.
Contaminated soil reclamation
Contaminated soilsEnvironmental chemistry +8
- Experimental program(4)
Description & Claims & Application Information
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