Abstract: A method for reducing acid gases in a flue gas, the method comprising reacting biosolids comprising a scrubbing agent with a flue gas comprising an acid gas, thereby reducing the amount of acid gas in the flue gas is disclosed. Also disclosed is a flue gas scrubbing process comprising: combusting a fossil fuel and biosolids comprising a scrubbing agent, thereby producing a flue gas comprising an acid gas, wherein the flue gas has a reduced amount of acid gas compared with flue gas produced from the combustion of the fossil filet alone. A flue gas scrubbing process comprising providing a stream of biosolids that includes a hydroxide or an oxide of a Group IA or IIA element, providing a flue gas comprising an acid gas, and reacting the biosolids stream with the flue gas so as to reduce the amount of acid gas in the flue gas is also disclosed.

Abstract: A process comprising receiving a hydrocarbon feed stream comprising carbon dioxide, separating the hydrocarbon feed stream into a light hydrocarbon stream and a heavy hydrocarbon stream, separating the light hydrocarbon stream into a carbon dioxide-rich stream and a carbon dioxide-lean stream, and feeding the carbon dioxide-lean stream into a hydrocarbon sweetening process, thereby increasing the processing capacity of the hydrocarbon sweetening process compared to the processing capacity of the hydrocarbon sweetening process when fed the hydrocarbon feed stream.

Abstract: A method for reducing acid gases in a flue gas, the method comprising reacting biosolids comprising a scrubbing agent with a flue gas comprising an acid gas, thereby reducing the amount of acid gas in the flue gas is disclosed. Also disclosed is a flue gas scrubbing process comprising: combusting a fossil fuel and biosolids comprising a scrubbing agent, thereby producing a flue gas comprising an acid gas, wherein the flue gas has a reduced amount of acid gas compared with flue gas produced from the combustion of the fossil filet alone. A flue gas scrubbing process comprising providing a stream of biosolids that includes a hydroxide or an oxide of a Group IA or IIA element, providing a flue gas comprising an acid gas, and reacting the biosolids stream with the flue gas so as to reduce the amount of acid gas in the flue gas is also disclosed.

Abstract: A sludge treatment process comprising: mixing a sludge and a sanitizing agent to form a sludge mixture, the sanitizing agent comprising no more than about 20 percent of the sludge mixture, sanitizing the sludge mixture to substantially reduce or eliminate the pathogens therein, thereby forming biosolids, and recycling some of the biosolids into the sludge mixture. Included is a sludge treatment process comprising: sanitizing sludge to substantially reduce or eliminate the pathogens therein, thereby forming biosolids, wherein the sludge is substantially free of an acid. Also included is a sludge treatment process comprising: mixing a sludge, a sanitizing agent, and a stiffening agent to form a sludge mixture, heating the sludge mixture to substantially reduce or eliminate the pathogens therein, thereby forming biosolids, and recycling some of the biosolids into the sludge mixture, wherein the pH of the sludge mixture is at least about 9 prior to the heating step.

Abstract: A method for separating a gas stream comprising methane and a contaminate gas comprises the steps of contacting the gas stream with water under temperature and pressure suitable for the formation of methane hydrates so as to form a water/hydrate slurry, separating the contaminate gas from the water/hydrate slurry, and recovering methane from the water/hydrate slurry so as to generate a water stream.