Method for detoxifying asbestos
The method for detoxifying asbestos disclosed here includes: preparing an asbestos-containing substance that contains at least one type of asbestos; preparing an asbestos treatment agent that contains a mineral acid and N-methyl-2-pyrrolidone; and bringing the asbestos-containing substance into contact with the asbestos treatment agent so as to detoxify asbestos in the asbestos-containing substance. Due to this configuration, asbestos in the asbestos-containing substance can be favorably detoxified.
1. A method for detoxifying asbestos, the method comprising:
preparing an asbestos-containing substance that contains at least one type of asbestos;
preparing an asbestos treatment agent that contains a mineral acid and N-methyl-2-pyrrolidone; and
bringing the asbestos-containing substance into contact with the asbestos treatment agent so as to detoxify asbestos in the asbestos-containing substance.
2. The method for detoxifying asbestos according to claim 1 , wherein the asbestos-containing substance contains at least chrysotile.
3. The method for detoxifying asbestos according to claim 1 , wherein the mineral acid is sulfuric acid.
4. The method for detoxifying asbestos according to claim 1 , wherein the asbestos-containing substance is brought into contact with the asbestos treatment agent for a period of 1 to 2 hours.
5. The method for detoxifying asbestos according to claim 1 , wherein the asbestos treatment agent is heated to a temperature range that is higher than 50° C. and lower than the boiling point of the treatment agent before the asbestos-containing substance is brought into contact with the asbestos treatment agent.
6. The method for detoxifying asbestos according to claim 1 , wherein the asbestos-containing substance that is brought into contact with the asbestos treatment agent is in the form of a powder.
7. The method for detoxifying asbestos according to claim 1 , wherein the concentration of the N-methyl-2-pyrrolidone is 0.1 to 10 wt % when the asbestos treatment agent as a whole is taken to be 100 wt %.