Liquid purification or separation – Processes – Utilizing electrical or wave energy directly applied to...
Patent
1998-06-11
2000-09-12
Simmons, David A.
Liquid purification or separation
Processes
Utilizing electrical or wave energy directly applied to...
210758, 210763, 210205, 4221863, C02F 132, B01J 1908
Patent
active
061173371
ABSTRACT:
A method and apparatus for mineralizing organic contaminants in water or air provides photochemical oxidation in a unique two-phase or three-phase boundary system formed in each pore of a TiO.sub.2 membrane in a photocatalytic reactor. In the three-phase system, gaseous oxidant, liquid contaminant, and solid semiconductor photocatalyst having a metal catalyst disposed thereon meet and engage in an efficient oxidation reaction. The porous membrane has pores which have a region wherein the meniscus of the liquid varies from the molecular diameter of water to that of a capillary tube resulting in a diffusion layer that is several orders of magnitude smaller than the closest known reactors. The photocatalytic reactor operates effectively at ambient temperature and low pressures.
REFERENCES:
patent: 4240882 (1980-12-01), Ang et al.
patent: 4544470 (1985-10-01), Hetrick
patent: 4684537 (1987-08-01), Graetzel
patent: 4694179 (1987-09-01), Lew et al.
patent: 4792407 (1988-12-01), Zeff
patent: 4836929 (1989-06-01), Baumann
patent: 4849114 (1989-07-01), Zeff
patent: 4867052 (1989-09-01), Cipelletti
patent: 4888101 (1989-12-01), Cooper
patent: 4892712 (1990-01-01), Robertson
patent: 4954465 (1990-09-01), Kawashima et al.
patent: 4997576 (1991-03-01), Heller
patent: 5035784 (1991-07-01), Anderson et al.
patent: 5045288 (1991-09-01), Raupp et al.
patent: 5126111 (1992-06-01), Al-Ekabi
patent: 5137607 (1992-08-01), Anderson
patent: 5256379 (1993-10-01), DeLoach
patent: 5259962 (1993-11-01), Later
patent: 5266215 (1993-11-01), Engelhard
patent: 5288461 (1994-02-01), Gray
patent: 5456881 (1995-10-01), Bandel
patent: 5460705 (1995-10-01), Murphy
patent: 5462674 (1995-10-01), Butters et al.
patent: 5501801 (1996-03-01), Zhang
patent: 5589078 (1996-12-01), Butters et al.
patent: 5656242 (1997-08-01), Morrow et al.
patent: 5720858 (1998-02-01), Noceti
patent: 5779912 (1998-07-01), Gonzalez-Martin et al.
patent: 5790934 (1998-08-01), Say et al.
patent: 5954925 (1999-09-01), Sherman
Ronald L. Cook and Anthony F. Sammells, Ambient Temperature Methane Activation to Condensed Species Under Cathodic Conditions, pp. 2007-2008, Jun. 6, 1990.
Annucia Gonzalez-Martin, Destruction of Chemical Warfare Agents by Enhanced Photocatalytic Reactors at Semiconductor Ceramic Membranes, pp. 4-68.
Annuncia Gonzalez-Martin, Mineralization of Explosive Pollutants in Aqueous Streams by a Novel Advanced Oxidation Photocatalytic Process, pp. 3-25.
Characterization of Semiconductor Materials, pp. 660-664.
Anuncia Gonzalez-Martin, Destruction of Chemical Warfare Agents by Enhanced Photocatalytic Reactions at Semiconductor Ceramic Membranes, pp. 3-25.
Gonzalez-Martin Anuncia
Hodko Dalibor
Murphy Oliver J.
Salinas Carlos
Lynntech Inc.
Prince Fred
Simmons David A.
Streets Jeffrey L.
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