CPC C02F 1/705 (2013.01) [B01J 23/44 (2013.01); B01J 35/00 (2013.01); B01J 35/23 (2024.01); B01J 35/30 (2024.01); B01J 35/393 (2024.01); C02F 3/102 (2013.01); C02F 3/34 (2013.01); C02F 2101/34 (2013.01); C02F 2101/36 (2013.01); C02F 2305/08 (2013.01)] | 18 Claims |
1. A system for removing trichloroethane (TCA), trichloroethene (TCE), and 1,4-dioxane (1,4-D) contaminants from a fluid, comprising: a first reactor and a second reactor, wherein:
the first reactor and the second reactor are in fluid connection with each other;
the first reactor comprises:
a catalyst film that reduces TCA and TCE, the catalyst film comprising precious metal nanoparticles with diameters of 5-40 nm;
a first nonporous membrane comprising a gas-phase side and a liquid-phase side, wherein the catalyst film is deposited on the liquid-phase side of the first nonporous membrane; and
a hydrogen (H2) gas source, wherein the H2 gas source delivers hydrogen to the gas-phase side of the first nonporous membrane and the precious metal nanoparticles and the H2 gas catalyze the reduction of TCA and TCE; and
the second reactor comprises:
a biofilm that oxidizes 1,4-D, wherein the biofilm comprises Methyloversatilis;
a second nonporous membrane comprising a gas-phase side and a liquid-phase side, wherein the biofilm is deposited on the liquid-phase of the second nonporous membrane; and
an oxygen (O2) gas source, wherein the O2 gas source delivers oxygen to the gas-phase side of the second non-porous membrane.
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