Results 61 to 70 of about 98,469 (255)

Mixing characteristics of bubble columns with internals for Biomass to liquid synthesis [abstract] [PDF]

open access: yes, 2009
Only abstract of poster available.Track II: Transportation and BiofuelsThe use of renewable energy sources is becoming increasingly necessary, if we are to achieve the changes required to address the impacts of global warming.
Al-Dahhan, Muthanna, Ezat, Mohamed
core  

Positroid Stratification of Orthogonal Grassmannian and ABJM Amplitudes [PDF]

open access: yes, 2014
A novel understanding of scattering amplitudes in terms of on-shell diagrams and positive Grassmannian has been recently established for four dimensional Yang-Mills theories and three dimensional Chern-Simons theories of ABJM type.
Kim, Joonho, Lee, Sangmin
core   +2 more sources

Low-computational time and accurate classification of flow regimes in bubble columns for aquaculture aeration using probability density functions of bubble velocity standard deviation

open access: yesTheoretical and Applied Mechanics Letters
This study explores the combination of ultrasound technology with a detection algorithm to categorize flow regimes in bubble columns used for aeration in aquaculture.
Natee Thong-Un   +4 more
doaj   +1 more source

Unit operations for gas-liquid mass transfer in reduced gravity environments [PDF]

open access: yes
Basic scaling rules are derived for converting Earth-based designs of mass transfer equipment into designs for a reduced gravity environment. Three types of gas-liquid mass transfer operations are considered: bubble columns, spray towers, and packed ...
Allen, David T., Pettit, Donald R.
core   +1 more source

Bubble Properties in Bubble Columns with Electrolyte Solutions

open access: yesKorean Chemical Engineering Research, 2016
− Bubble properties such as size (chord length) and rising velocity were investigated in a bubble column with electrolyte solutions, of which diameter was 0.152m and 2.5m in height, respectively. The size and rising velocity of bubbles were measured by using the dual electrical resistivity probe method.
D.J. Yoo   +4 more
openaire   +2 more sources

A new photobioreactor for continuous microalgal production in hatcheries based on external-loop airlift and swirling flow [PDF]

open access: yes, 2009
This study deals with the scale of a new photobioreactor for continuous microalgal production in hatcheries. The combination of the state-of-art with the constraints inherent to hatcheries has turned the design into a closed, artificially illuminated ...
Aoubed   +29 more
core   +3 more sources

Reactive Mass Transfer of Single NO Bubbles and Bubble Bouncing in Aqueous Ferric Solutions – A Feasibility Study

open access: yesOil & Gas Science and Technology, 2017
Reactive bubble columns are widely used in the chemical, petrochemical, biochemical and metal industries. While the reactive mass transfer around a single spherical shaped bubble is quite well described in literature, the influence of hydrodynamic ...
Hlawitschka Mark W.   +4 more
doaj   +1 more source

Improving Practical Performance of Single-tip-optical-fibre Probing for Measurement of Bubble-Swarm Motion and Properties in a Large Diameter Bubble Column

open access: yesChemical Engineering Transactions, 2013
Bubble column reactors are frequently applied to chemical plants and other industrial plants. To elucidate the practical properties of the bubble columns, the heat and mass transfer phenomena in consideration of the average bubble diameters and average ...
Y. Mizushima, T. Saito
doaj   +1 more source

Influence of internals on counter-current bubble column hydrodynamics: Holdup, flow regime transition and local flow properties [PDF]

open access: yes, 2016
Bubble columns are frequently studied without considering internals (open tube bubble columns). However, in most industrial applications, internal devices are often added to control heat transfer, to foster bubble break-up or to limit liquid phase back ...
Besagni, G., Inzoli, Fabio
core   +1 more source

Liquid-Phase Back mixing in Bubble Columns

open access: yesTikrit Journal of Engineering Sciences, 2013
Liquid-phase axial dispersion coefficients have been measured for air-water system in bubble columns of 10, 15 and 30 cm diameter. The experiments are carried out using a transient method (the tracer response method).
Burhan S. Abdulrazak
doaj  

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