Membrane gas separation has potential for the recovery and purification of helium, because the majority of membranes have selectivity for helium. This review reports on the current state of the research and patent literature for membranes undertaking helium separation. This includes direct recovery from natural gas, as an ancillary stage in natural gas processing, as well as niche applications ...

Hydrogen as a high-quality and clean energy carrier has attracted renewed and ever-increasing attention around the world in recent years, mainly due to developments in fuel cells and environmental pressures including climate change issues. In thermochemical processes for hydrogen production from fossil fuels, separation and purification is a critical technology. Where water-gas shift reaction i...

Advanced porous materials with uniform molecular scale apertures are highly desirable for energy related separations. Among them, zeolitic imidazolate frameworks (ZIFs) have received significant interest as separation membranes owing to their narrow that can target small gases. ZIFs exhibit excellent gas transport properties, such unprecedentedly high C3H6 permeability and remarkable C3H6/C3H8 ...

Fluorescent nanoparticles dedicated to bioimaging applications should possess specific properties that have be maintained in the aqueous, reactive, and crowded biological environment. These include chemical photostability, small size (on scale of subcellular structures), biocompatibility, high brightness, good solubility. The latter is a major challenge for inorganic nanoparticles, which requir...

Microalgae have attracted great interest for biofuel production, wastewater treatment, and CO2 capture from dilute sources, but its broad implementation is limited by the high energy consumption of algae dewatering. Membrane technology has emerged as a key process dewatering, performance restrained fouling organic matter in solutions, resulting low water permeance. This review presents state-of...

Addition of bovine serum albumin to cholorplasts inhibited by prior addition of 1 PM dibromothymoquinone results in a timeand light-dependent restoration of electron transport activity. The kinetics of this reversal reaction are complex, and indicate that it is controlled by the degree to which the thylakoid membranes are energized. The presence of ADP and inorganic phosphate, or of uncouplers,...