Abstract: A system for hydrogen production including a first separation system, a first purification unit, a second purification unit, an oxygen scavenger, a catalytic reactor, a second separation system, and a liquefier. A method for hydrogen production including separating oxygen-containing components from a feed also containing hydrogen sulfide and methane. The method further includes separating the hydrogen sulfide from the methane and feeding the hydrogen sulfide to a first purification unit. The method includes feeding the methane to a second purification unit. The method further includes feeding the purified hydrogen sulfide and methane to an oxygen scavenger unit to remove residual oxygen before reacting the two streams in a catalytic reactor. The method includes separating the gaseous hydrogen and liquid carbon disulfide exiting the catalytic reactor and then purifying and liquefying the gaseous hydrogen stream to produce a purified liquid hydrogen stream.

Abstract: In certain embodiments, a system includes a gasification system configured to output grey water. The system also includes a grey water zero liquid discharge (ZLD) system configured to receive the grey water and to generate a first stream of distillate. The grey water ZLD system comprises an ammonia stripping system. An amount of water into and out of the grey water ZLD system is approximately equal.

Abstract: In certain embodiments, a system includes a gasification system configured to output grey water. The system also includes a grey water zero liquid discharge (ZLD) system configured to receive the grey water and to generate a first stream of distillate. The grey water ZLD system comprises an ammonia stripping system. An amount of water into and out of the grey water ZLD system is approximately equal.