TECHNOLOGY FOCUS - INSTRUMENTATION AND TESTING - Preferred Device: The in-line extraction device or filters includes at least one of ionic membrane, molecular sieve, hybrid sieve/membrane, and capillary structure to extract hydrogen from the mixture. The in-line extraction device or filters includes proton permeable membrane having first side in contact with the mixture in the delivery conduit and second side opposite the first side; annular space around the proton permeable membrane and port coupled to the annular space for supplying the extracted hydrogen to the downstream facility; conductive screen on the second side of the proton permeable membrane; and controller to supply a current to the first side of the proton permeable membrane and to the conductive screen on the second side of the proton permeable membrane.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Method: The method (M1) selectively removes at least a portion of the target material includes selectively removing at least a portion of the hydrogen from the mixture with the filter concentric to the delivery conduit; collects the removed hydrogen in the annular space and supplying the collected hydrogen to the downstream facility via the port; pressurizes the removed hydrogen with the conductive screen; and removes electrons from hydrogen in the mixture at the first side of the proton permeable membrane, by forming protons; transports the formed protons through the proton permeable membrane; and recombines the transported protons with electrons on the second side of the proton permeable membrane, by forming hydrogen on the second side of the proton permeable membrane; introduces oxygen to the second side of the proton permeable membrane; and reacts the introduced oxygen with the hydrogen formed on the second side of the proton permeable membrane, by forming water and releasing electrical energy. Preferred Components: The mixture includes hydrogen (H2) and at least one of methane (CH4), ethane (C2H6), propane (C3H8), water (H2O), carbon monoxide (CO), carbon dioxide (CO2), nitrogen (N2), oxygen (O2), argon (Ar), and hydrogen sulfide (H2S). EXAMPLE - No suitable example given.