Abstract: The present disclosure relates, according to some embodiments, to systems and methods for removal of contaminants from water including, but not limited to, industrial wastewater, brackish water, municipal wastewater, drinking waters, and particularly waters obtained from fracking operations. For example, a method for purifying a feed water composition may comprise (a) contacting the feed water composition with an activated manganese dioxide to form an activated manganese dioxide-containing feed water composition, where the activated manganese dioxide was formed by contacting soluble organics with soluble permanganate ions (MnO4?) at a pH from about 5.

Abstract: The present disclosure relates, according to some embodiments, to systems and methods for processing organic compounds, such as manure or other organic waste. Embodiments may comprise a first containment or mixing chamber, a first anaerobic chamber, and a second anaerobic chamber. A first anaerobic chamber may receive organic compounds from a first containment or mixing chamber, and may provide a fluid stream to a second anaerobic chamber. The second anaerobic chamber may comprise a substrate, such as lava rock, with bacteria growing thereon. Further, biogas generated in one or both of the first anaerobic chamber and the second anaerobic chamber may be purified in a first stage using a water scrubber to remove a majority of the carbon dioxide and other contaminants from the biogas, and in a second stage using a pressure swing adsorption unit to reduce carbon dioxide and other contaminants to pipeline acceptable levels.