Supercritical Water and Supercritical Carbon Dioxide for Cleaning of Soil Material
作者： G. Brunner , B. Misch , A. Firus , K. Nowak
DOI: 10.1007/978-3-662-04643-2_31
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摘要: Thermal treatment of contaminated soil has gained great interest. If biological methods have no sufficient cleaning effect, the material must be deposited or incinerated. with supercritical water (Tc = 374 °C, Pc 22.1 MPa), in contrast to incineration, leads clean without creating nitrogen oxides and sulfur dioxide. Depending on type contamination, reaction products are CO2, H2O, inorganic acids highly volatile hydrocarbons. The process is carried out at elevated pressures (25 MPa) and, compared moderate temperatures (375–600 °C). Residence times short (< 120 s) can controlled by conditions state relating oxidation (Brunner 1994).
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