Effect of chaotic mixing on enhanced biological growth and implications for wastewater treatment: A test case with Saccharomyces cerevisiae

Bagtzoglou, Amvrossios C.; Assaf-Anid, Nada; Chevray, R.

doi:10.1016/j.jhazmat.2005.11.039

Cited by 5 publications

(2 citation statements)

References 22 publications

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“…Chaotic advection in fluids (without porous media) has been demonstrated by numerous theoretical and experimental studies in various flow systems, including blinking-vortex flow systems, tendril-whorl flow systems, pulsed source-sink systems, journal-bearing systems, and others − . Chaotic mixing enhanced biological growth has also been demonstrated in a bench-scale apparatus consisting of two eccentrically placed cylinders by Bagtzoglou et al .…”

Section: Introductionmentioning

confidence: 95%

Enhanced Mixing and Plume Containment in Porous Media under Time-Dependent Oscillatory Flow

Zhang

DeVries

Dathe

et al. 2009

Environ. Sci. Technol.

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Solute transport experiments were conducted in a decimeter scale flow cell packed with sand to study the potential for enhanced mixing of solutes in porous media and improved containment of injected plumes under multiple pumping-well driven, time-dependent oscillatory flow with respect to constant flow. Real-time imaging of the colorimetric reaction of Tiron (1,2-dihydroxybenzene-3,5-disulfonic acid) and molybdate was used to quantify mixing, whereas fluorescein was used to better examine plume size. Results from the small scale experiments clearly demonstrated the enhanced mixing of solutes under low Reynolds number oscillatory flow (a factor of 2 with respect to constant flow in homogeneous sand and a factor of 3 in layered sand), as the result of increased contact interface for solute diffusion. Further, the injected solute plume was better contained under oscillatory flow (25% less area with respect to constant flow in homogeneous sand) due to the cancellation of advective transport at each well over time. Enhanced mixing under oscillatory flow may enhance the processes of chemical and biological remediation. Furthermore, improved plume containment under oscillatory flow may require smaller amounts of chemicals to be injected during aquifer remediation.

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Section: Introductionmentioning

confidence: 95%

Enhanced Mixing and Plume Containment in Porous Media under Time-Dependent Oscillatory Flow

Zhang

DeVries

Dathe

et al. 2009

Environ. Sci. Technol.

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“…1) was designed based on research of Amvrossios. C [16]. It consists of two plexiglass cylinders, a hollow outer cylinder and a solid inner cylinder, whose axes are vertical.…”

Section: Equipmentmentioning

confidence: 99%

The Influence of Fluid Mixed State on Microorganisms: A Test Case with <i>Bacillus </i><i>subtilis</i>

Liu

Zhang

Shi

2014

AMR

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Flow pattern and mode have a far influence on the efficiency of biological treatment systems. In order to investigate the effects of different flow patterns on the growth of Bacillus subtilis, a self-developed fluid mixing device was designed to produce different liquid fluidization. It was found that the greater Re, the more conducive to the growth of bacteria, which evidenced by the logarithmic phase shorter and reached stationary phase bacteria concentration increased; when the Reynolds number is low, growth curve of Bacillus subtilis appeared Growth - stationary - growth and cell precipitation phenomenon, both phenomena gradually disappeared when Re increases. Besides, it can consume dissolved oxygen after inoculation with Bacillus subtilis, which keeping the dissolved oxygen in the medium at a lower level (0~1mg/L)

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Kinematics of Flow and Mixing Mechanisms

Tiwari

Cullen²

2009

Food Mixing

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Effect of chaotic mixing on enhanced biological growth and implications for wastewater treatment: A test case with Saccharomyces cerevisiae

Cited by 5 publications

References 22 publications

Enhanced Mixing and Plume Containment in Porous Media under Time-Dependent Oscillatory Flow

Enhanced Mixing and Plume Containment in Porous Media under Time-Dependent Oscillatory Flow

The Influence of Fluid Mixed State on Microorganisms: A Test Case with <i>Bacillus </i><i>subtilis</i>

Kinematics of Flow and Mixing Mechanisms

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