Hazim Qiblawey

Nanofiller-tuned microporous polymer molecular sieves for energy and environmental processes

Microporous polymers with molecular sieving properties are promising for a wide range of applications in gas storage, molecular separations, catalysis, and energy storage. In this study, we report highly permeable and selective molecular sieves fabricated from crosslinked polymers of intrinsic microporosity (PIMs) incorporated with highly dispersed nanoscale fillers, including nonporous inorganic nanoparticles and microporous metal–organic framework (MOF) nanocrystals. We demonstrate that the combination of covalent crosslinking of microporous polymers via controlled thermal oxidation and tunable incorporation of nanofillers results in high-performance membranes with substantially enhanced permeability and molecular sieving selectivity, as demonstrated in separation of gas molecules, for example, air separation (O2/N2), CO2 separation from natural gas (CH4) or flue gas (CO2/N2), and H2 separation from N2 and CH4. After ageing over two years, these nanofiller-tuned molecular sieves became more selective and less permeable but maintained permeability levels that are still two orders of magnitude higher than conventional gas separation membranes.

MEMBRANE DESALINATION DRIVEN BY SOLAR ENERGY

In recent years, membrane technology has become increasingly significant and has been widely used in desalination. Some membrane processes, such as reverse osmosis and electrodialysis are used commercially while others such as membrane distillation are still in the research and development stages. This study reviewed the current status of a number of solar thermal and solar PV technologies that can be coupled with water membrane-based desalination processes. Solar systems have the potential to power membrane-based desalination plants but still cannot compete favorably with fossil fuel based energy desalination. Nevertheless, these systems remain a valid option for small scale units in remote areas.

Numerical modeling of 30^{\circ } and 45{^\circ } inclined dense turbulent jets in stationary ambient

Dispersion of turbulent jets in shallow coastal waters has numerous engineering applications. The accurate forecasting of the complex interaction of these jets with the ambient fluid presents significant challenge and has yet to be fully elucidated. In this paper, numerical simulation of 30∘\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}

Projection of Significant Wave Height in a Coastal Area under RCPs Climate Change Scenarios

30{^\circ }

Neural and genetic based techniques for solving the MSF model as opposed to conventional numerical methods

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Wave climatology over Qatar Coastal Area Under Climate Change

45{^\circ }