The capability of charcoal as a sorbent for helium at cryogenic temperatures depends upon charcoal characteristics that are not well understood. Previous work by the authors has indicated that the charcoals' pumping capability for helium depends as much on their source as on their particle size distributions. To develop a correlation between the physical characteristics of charcoal and helium p...

Membrane bioreactors (MBRs) have several advantages such as high-quality effluent, small footprint and less sludge production over conventional activated sludge systems, and are therefore considered to be a promising technology for future wastewater treatment. For wider use of MBRs, however, high-energy consumption in the operation of MBRs, mainly attributed to membrane fouling, needs to be add...

measurement of soil saturated hydraulic conductivity, ks, is normally affected by flow patterns such as macro pore; however, most current techniques do  not differentiate flow types, causing major problems in describing water and chemical flows within the soil matrix. this study compares eight models for scaling ks and predicted matrix and macro pore ks, using a database composed of 50 datasets...

Nature gas hydrates (NGHs) are regarded as a potential alternative energy source due to their huge reserves and wide distribution. According the geophysical surveys, pore-filling occupy large proportion of global hydrate reserves, especially for marine regions. Therefore, with novel pore-scale 3D morphological modeling algorithm, this study systematically studied effect particle size on physica...

Abstract Trapped or residual air (or gas) is known to affect the multiphase hydraulic properties of both soils and rocks. impact many vadose zone hydrologic applications such as infiltration flow in capillary fringe, but also a major issue affecting recoverable oil reserves. Although studies have focused on relationship between porosity trapped gas saturation ( S gt ) sandstones, far fewer been...