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US 7,402,132 B2Granted
Treating hazardous materials
OwnerJack W. Matthewsinventor
Life of this patent
Estimating the term…
Abstract
Methods of treating hazardous materials, such as, for example, contaminated soils, are disclosed. In one aspect, a method may include treating a contaminated soil with a hazardous material treatment composition to form a resulting material. In one aspect, the hazardous material treatment composition may include mostly salt, and from 0.5 to 15 wt % sorbent. The method may further include treating the resulting material with one or more inorganic binding agents. Other methods of treating hazardous materials are also disclosed, as well as compositions for treating hazardous materials.
Claims30
A method comprising:
- determining a type of sorbent to be used to treat a contaminated soil based on a type of contaminant in the contaminated soil;
- combining the contaminated soil having the contaminant with the determined type of sorbent and salt, the salt being used in a greater amount than the sorbent;
- mixing the contaminated soil, the sorbent, the salt, and water to form a resulting mixture;
- during said mixing, sorbing the contaminant with the sorbent;
- during said mixing, crystallizing the salt around the sorbent;
- mixing an inorganic, binding agent with the resulting mixture;
- and
- hardening the inorganic binding agent around the crystallized salt and around the sorbent.
5 more elements
A method comprising:
- treating a contaminated soil with a salt, and sorbent, the salt being used in a greater amount than the sorbent, the sorbent comprising at least one selected from:
- an activated carbon;
- a chelating agent;
- a zeolite that has cavities that have been pre-treated to have a stationary solvent phase therein to sorb organics;
- a zeolite that has cavities that have been pre-treated to add a trap therein to trap at least one of a small molecule and an ion;
- and
- treating the resulting material with one or more inorganic binding agents.
4 more elements
A method comprising:
- combining a sorbent with a contaminated soil having a contaminant;
- mixing the sorbent with the contaminated soil;
- sorbing the contaminant with the sorbent while the sorbent and the contaminated soil are being mixed;
- mixing a salt with the sorbent and the contaminated soil;
- after the sorbent has sorbed the contaminant, crystallizing the salt around the sorbent that has sorbed the contaminant while the salt is mixed with the sorbent and the contaminated soil;
- after said mixing the salt with the contaminated soil, adding an inorganic binding agent to the mixture of the sorbent, the salt, and the contaminated soil;
- mixing the inorganic binding agent with the mixture of the salt, the sorbent, and the contaminated soil;
- and
- hardening the inorganic binding agent around the salt that is crystallized around the sorbent.
6 more elements
Dependencies are inferred from the claim text.