Abstract: Microbial reactors are provided for ammonium oxidation. Briefly, a reactor comprises a medium including an ammonium component and a Feammox bacterium and/or enzyme(s) thereof capable of oxidizing ammonium with electron transfer to an anode in contact with the medium. As described further herein, use of the anode as an electron acceptor can mitigate or overcome the disadvantages associated Fe(III) acceptor. In some embodiments, for example, ammonium oxidation in the reactor can proceed in the absence of Fe(III) and/or other metal compounds operable to function as an electron acceptor in the medium. Moreover, the medium may further comprise one more contaminants in addition to the ammonium component.

Abstract: Microbial reactors are provided for ammonium oxidation. Briefly, a reactor comprises a medium including an ammonium component and a Feammox bacterium and/or enzyme(s) thereof capable of oxidizing ammonium with electron transfer to an anode in contact with the medium. As described further herein, use of the anode as an electron acceptor can mitigate or overcome the disadvantages associated Fe(III) acceptor. In some embodiments, for example, ammonium oxidation in the reactor can proceed in the absence of Fe(III) and/or other metal compounds operable to function as an electron acceptor in the medium. Moreover, the medium may further comprise one more contaminants in addition to the ammonium component.

Abstract: Media are described herein for the degradation and/or remediation of fluorochemicals. Briefly, a medium comprises an electron donor; a fluorochemical component; an electron acceptor; and a Feammox bacterium and/or one or more enzymes exhibiting reductive dehalogenase activity, the Feammox bacterium and/or enzyme(s) capable of fluorochemical degradation in conjunction with oxidation of electron donor and electron transfer to the electron acceptor. In some embodiments, the fluorochemical component comprises one or more fluorochemicals selected from the group consisting of perfluoroalkyl compounds, polyfluoroalkyl compounds, fluorinated carboxylic acids, fluorinated alcohols, and fluorinated sulfonates. The medium, in some embodiments, comprises water, soil, sludge, sorbents and/or solids contaminated with the fluorochemical component.

Abstract: In one aspect, oxidant is employed for enhancing Feammox activity. Briefly, a medium comprises an ammonium containing contaminant, an iron component, an oxidant, and a Feammox bacterium and/or enzyme thereof capable of oxidizing ammonium with reduction of Fe(II) to Fe(III), wherein the oxidant regenerates Fe(III) via Fe(II) oxidation. In some embodiments, the medium is soil and/or water.

Abstract: Processes and compositions for removal nitrogen, organic and inorganic contaminants from wastewater using Feammox bacterium are provided.

Abstract: Processes and compositions for removal nitrogen, organic and inorganic contaminants from wastewater using Feammox bacterium are provided.

Abstract: Processes and compositions for removal nitrogen, organic and inorganic contaminants from wastewater using Feammox bacterium are provided.

Abstract: Processes and compositions for removal nitrogen, organic and inorganic contaminants from wastewater using Feammox bacterium are provided.

Abstract: A method for preventing cross-contamination of semiconductor wafers during processing comprising covering a surface portion of a support assembly with a process compatible material, engaging a semiconductor wafer with the support assembly, processing the wafer while it is engaged with the support member, and removing the process compatible material from the support assembly after said material is considered to be contaminated. A shield particularly adapted for this process includes a shield portion made from a process compatible material and a process-compatible adhesive for attaching the shield portion to the support assembly.

Abstract: Non-ionic pollutants are removed from the soil by contacting the soil with a mixture of a particulate material having an anionic surfactant absorbed to a magnetic oxide. The surfactant complexes through the anionic charge to the magnetic particle and the non-ionic pollutants partitions into the sorbed surfactant. The particulate material including the surfactant and pollutant are magnetically removed from the soil. A typical embodiment utilizes ferric ferrous oxide and alkyl lauryl polyoxycarboxylate to remove polychlorinated biphenyls from soil.

Abstract: A method for preventing cross-contamination of semiconductor wafers during processing comprising covering a surface portion of a support assembly with a process compatible material, engaging a semiconductor wafer with the support assembly, processing the wafer while it is engaged with the support member, and removing the process compatible material from the support assembly after said material is considered to be contaminated. A shield particularly adapted for this process includes a shield portion made from a process compatible material and a process-compatible adhesive for attaching the shield portion to the support assembly.