Supercritical water oxidation (SCWO): a process for the treatment of industrial waste effluents

Porous Materials and Supercritical Fluids

“…[19,20] All of these applications exploit at least one of the unique properties associated with SCFs. There are several specific reasons to consider SCFs as alternative solvents for the synthesis and processing of porous materials:…”

Oxidation of Fatty Acids by Hydrogen Peroxide in Aqueous Medium Under Supercritical Fluid Conditions

“…Waste oxidized in the reactor, enters the cooler (12), then passes through the pressure regulator and enters liquid collector and air separator (13). Temperatures in the reactor and heat exchangers are measured and regulated by thermo-regulators TPM-1 "OVEN" (10). The air flow is measured by a gas flow meter VA-420-19.…”

“…Inorganic compounds practically do not dissolve in supercritical water and precipitate in the form of salts, from which valuable metals and inorganic compounds can be retrieved. If the initial reaction mixture contains 10-25% of organic compounds, SCWO process proceeds with the release of heat (10-20 MJ/kg), that can be sufficient not only for the reaction, but also for providing heat to external consumers [10][11][12]. To investigate the efficiency of SCWO process, the oxidation of acetic and oleic acids with hydrogen peroxide has been chosen.…”

Corrosion Properties of Candidate Materials in Supercritical Water Oxidation Process

“…The reaction condition of SCWO usually contained the temperature range of 400 °C~600 °C and pressure range of 24 MPa ~ 28 *Corresponding author; E-mail address: szwang@aliyun.com MPa (2,4,13). The solubility of ionic compound will decrease sharply when the wastewater is heated to supercritical condition.…”

“…Supercritical water (SCW) is the water above its thermodynamic critical point (374 °C, 22.1 MPa) has attracted increasing attention in supercritical water gasification (SCWG) and supercritical water oxidation (SCWO) in the past three decades (1)(2)(3)(4)(5). SCWG and SCWO have been proved to be a high effective way to resource utilization and harmless for organic matter, respectively (6)(7)(8).…”