▎ 摘　　要

NOVELTY - The apparatus has a graphene oxide membrane for separating a first lumen i.e. inner lumen, from a second lumen i.e. outer lumen, where water molecules (450) within humid gas or liquid stream introduced into first lumen are passed through the graphene oxide membrane into a dry gas stream introduced into the second lumen. The inner lumen is connected within an interior surface of an inner tube of a tubular arrangement. The outer lumen is provided between an exterior surface of the inner tube and an interior surface of an outer tube of the tubular arrangement. USE - Apparatus for removing water from humid gas or liquid stream e.g. animal waste and cabin air, in a water purification and recovery system (all claimed) i.e. military and civilian potable graphene oxide water purification and recovery system. Can also be used for from mud and human waste e.g. human excrement and urine, in an analytical chemistry and a spacecraft support system. ADVANTAGE - The apparatus prevents formation of free headspace into which volatile substances escape from an aqueous sample when volatiles are normally part of an analysis. DETAILED DESCRIPTION - The apparatus comprises first and second fine-mesh screens made of inert material. An INDEPENDENT CLAIM is also included for a water purification and recovery system. DESCRIPTION OF DRAWING(S) - The drawing shows a side cross-sectional view of a simplified graphene oxide water purification or recovery system. Graphene oxide water purification or recovery system (400) Container (408) Piston (428) Thermoelectric device (440) Water molecules (450)