Impact Assessment of Hydrologic and Operational Factors on the Efficiency of Managed Aquifer Recharge Scheme
M.A. Rahman, P. Oberdorfer, Y. Jin, M. Pervin, E. Holzbecher
Department of Applied Geology, Geoscience Center, University of Göttingen, Göttingen, Lower Saxony, Germany
Due to increased demands on groundwater accompanied by increased drawdowns (ca. 2-3 meters/year), technologies that use alternative water resources have been suggested for Dhaka City, Bangladesh. Preliminary studies show that managed aquifer recharge (MAR) would help in optimal use of available water resources and to reduce adverse effects of pumping in the Dupitila aquifer of the city. In this ...
C. Grau Turuelo, B. Bergmann, C. Breitkopf, F. Hoffmann, L. Brencher
Technische Universität Dresden, Dresden, Saxony, Germany
Infineon Technologies GmbH, Dresden, Dresden, Saxony, Germany
A novel technique for semiconductor manufacturing is introduced: Silicon-On-Nothing. This process consists of an initial cylindrical trench which has a shape evolution under certain conditions: high temperature (1100 °C), low pressure (10 Torr) and a non-oxidizing atmosphere such as hydrogen. These conditions enable a, mainly, surface diffusion phenomenon whose final result is an empty space ...
S. Pramanik, G. L. Kulukuru, M. Mishra
Indian Institute of Technology Ropar, Rupnagar, Punjab, India
When a less viscous fluid displaces a more viscous one in a porous medium or Hele-Shaw cell, the interface between the two miscible fluids does not remain flat and deforms into fingers growing in time . It occurs due to the faster movement of less viscous fluid than the more viscous one, for a given pressure gradient. Fingering affects in aquifers, in packed bed reactors, and detrimental to ...
Development of a Multiphase, Multispecies Droplet Evaporation Model for Optimization of Desiccation Preservation Techniques
A. Sinkevich, S. Bhowmick , M. Raessi
University of Massachusetts Dartmouth, North Dartmouth, MA, USA
Biopreservation deals with the protection and storage of complex biologics such as proteins, lipids, and recently, mammalian cells. One preservation method, known as lyopreservation, involves placing a biologic inside a water droplet with some type of sugar excipient (sucrose, trehalose, etc.) and drying the solution convectively. We are currently developing a model that couples the two-phase ...
M. Giansetti, A. Pezzin, S. Sicardi, G. Rovero
Politecnico di Torino, Torino, Italy
Within wool textile industries, a very important role is played by the so-called finishing processes, in which the textile substrate undergoes steam treatments to achieve the desired level of stabilisation and appearance. Process parameters, namely temperature and moisture content, are known only at the beginning of the process but not in the textile material being treated, where the actual ...
P. L. Mills, A. Nagaraj
Department of Chemical & Natural Gas Engineering, Texas A&M University, Kingsville, TX, USA
Department of Environmental Engineering, Texas A&M University, Kingsville, TX, USA
Introduction: Development of next-generation chemical processes that have zero emissions is a key environmental objective for sustainable development. The manufacture of H2SO4 by the air oxidation of SO2 to SO3 is an important technology where an opportunity exists for new catalyst development and process innovation by reducing emissions of unconverted SO2 in process reactor tail gases owing to ...
D. Cardoen[1,2], B. B. Sales, J. Helsen, A. Verliefde
VITO, Mol, Belgium
Ghent University, Ghent, Belgium
Capacitive deionization (CDI) is a desalination technology which is based on the storage of ions in the electrical double layer of a pair of oppositely polarized porous carbon electrodes, which are usually assembled using activated carbon particles (Figure 1). It is efficiently deployed for desalinating water with moderate salt content (eg in domestic water softening). To broaden its ...
R. Samso, N. Forquet, P. Molle, J. Garcia
Department of Hydraulic, Maritime and Environmental Engineering, Universitat Politècnica de Catalunya-BarcelonaTech, Barcelona, Spain
IRSTEA, Freshwater Systems, Ecology and Pollution Research Unit, Villeurbanne, France
Horizontal-Flow Constructed Wetlands (HFCWs) are a particular type of biofilter, and as such they rely mostly on the activity of bacterial communities to treat wastewater. Bacterial growth in HFCWs induces dramatic changes in its hydraulic and hydrodynamic behaviour (bioclogging), which may eventually result in overland flow of wastewater. Consequently, clogging is the main cause of premature ...
School of Mechanical Engineering, University of Birmingham, Birmingham, United Kingdom
A device for monitoring the oxygen consumption of cells has been developed, which consists of two parts; a cell culturing platform (CCP) and an oxygen sensing chip. The CCP possesses inlet and outlet pipes to direct the fluid under the test to the cell culturing chamber through the inlet pipe and goes out of the outlet pipe after being partially consumed by the cells. In this abstract, the ...
H. Cremasco, K. Angilelli, D. Borsato
Universidade Estadual de Londrina, Londrina, Paraná, Brazil
The transfer of sucrose and fructooligosaccharides to melon and water to solution was modeled based on generalized form of Fick’s second law for simultaneous diffusion and resolved by the finite element method using the software package COMSOL Multiphysics® software. The diffusion coefficients, the mass transfer coefficient and the Biot number were determined using the simplex optimization ...