photobioreactor diagram reactor tube draft tank stirred schematic illumination uniform figure

I. Stirred Tank Reactor

I. Stirred Tank Reactor

The continuous stirred-tank reactor (CSTR), also known as vat- or backmix reactor, or a continuous-flow stirred-tank reactor (CFSTR), is a common model for a chemical reactor in chemical engineering.A CSTR often refers to a model used to estimate the key unit operation variables when using a continuous agitated-tank reactor to reach a specified output. to be emitted should the reactor be purged or opened between batches. A typical plant will have multiple process trains, each usually capable of producing a variety of grades of polystyrene. Figure 6.6.3-1 is a schematic representation of the polystyrene batch bulk polymerization process, and the following numbered steps refer to that figure.

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Bioreactors Types: 6 Types of Bioreactors used in ...

Bioreactors Types: 6 Types of Bioreactors used in ...

US8507253B2 US11/632,5105A US8507253B2 US 8507253 B53 B2 US 8507253B2 US 63254105 A US63254105 A US 63254105A US 8507253 B53 B2 US 8507253B2 Authority US United States Prior art keywords photobioreactor light gas liquid medium photosynthetic organisms Prior art date 2002-05-13 Legal status (The legal status is an assumption … We aimed to produce an enriched, concentrated, well-settling, nutrient-removing PNSB biomass using sequencing batch regimes (SBR) in an anaerobic photobioreactor. The stirred tank was fed with a ...

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EP2152848A2 - Photobioreactor systems positioned on …

EP2152848A2 - Photobioreactor systems positioned on …

v. 5.2.3. Experimental measurements . ..... equal to 2.0. The turbulent viscosity , ..... g = gravitational accelerati... The utility model relates to a bubble tower type light biological reactor, which belongs to the technical field of micro algae culturing light biological reactors. A bottom plate of the reactor is provided with a platform, guard posts and light sources are arranged around the platform, and the light sources are connected with a time controller; a tank body of the reactor is arranged on the ...

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Advanced CFD model of multiphase ...

Advanced CFD model of multiphase ...

Another type of reactor widely used in bioprocessing is the airlift bioreactor, which consists of a draft tube and operates with an internal airlift loop. In this work, the mass transfer characteristics of a draft tube‐impeller agitation system (combination of a conventional airlift and a stirred bioreactor) were investigated in a large‐scale tank.  · General structure of a continuous stirred-tank type bioreactor 9. • In stirred tank bioreactors or in short stirred tank reactors (STRs), the air is added to the culture medium under pressure through a device called sparger. • The sparger may be a ring with many holes or a tube …

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Draft Tube - an overview | ScienceDirect Topics

Draft Tube - an overview | ScienceDirect Topics

EP2152848A314A EP08743314A EP2152848A2 EP 2152848 A48 A2 EP 2152848A2 EP 08743314 A EP08743314 A EP 08743314A EP 08743314 A EP08743314 A EP ... Stirred Draft Tube Photobioreactor for Uniform Illumination. ... A mechanically stirred draft tube reactor with a steel double jacket avoids uncontrolled illumination from outside and allows measurement and control of process parameters. ... Figure 1: Schematic diagram of stirred tank reactor with illumination ...

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Sequential heterotrophic/autotrophic cultivation – An ...

Sequential heterotrophic/autotrophic cultivation – An ...

At the same time, D. communis cultivation under the same conditions in stirred-tank photobioreactor resulted in average volumetric productivities of biomass due to the light limitation even when ... Department of Training and Workforce Development

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Modeling and Control Design of Continuous Stirred Tank ...

Modeling and Control Design of Continuous Stirred Tank ...

Algae-based bioremediation systems and methods in which algae is grown in a photobioreactor with nutrients supplied from a nutrient system. An effluent stream in need of remediation is ported to a pond or lagoon and the lagoon is inoculated repetitively with algae grown in the photobioreactor. The photobioreactor comprises a tank for growing dense algae using growth medium from the nutrient ... In stirred tank bioreactors or in short stirred tank reactors (STRs), the air is added to the culture medium under pressure through a device called sparger. The sparger may be a ring with many holes or a tube with a single orifice. The sparger along with impellers (agitators) enables better gas distribution system throughout the vessel.

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Department of Training and Workforce Development

Department of Training and Workforce Development

This chapter presents bioreactors models applied to bioprocesses including submerged (stirred tank reactor, bubble column, air-lift, membrane, packed bed and fluidized bed bioreactors) and solid ... Effect of oxygen concentration on growth of outdoor A. platensis cultures. Cultures were grown in tubular photobioreactors at the optimal temperature of 35 °C and exposed to different oxygen ...

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(PDF) Application of different types of bioreactors in ...

(PDF) Application of different types of bioreactors in ...

The draft tube valve (DTV) (see Fig 5.18), is placed on the tailwater side of the pump-turbine and is provided to isolate the machine from the lower reservoir during maintenance, and to close in the event of a major burst to prevent station flooding.It is normally left open and does not form part of any automatic operating sequence. An airlift reactor is one type of bubble reactor with an internal draft-tube that promotes gas–liquid mass transfer and mixing [52, 53].Airlift reactors have been largely used for algae cultures [54–59].As shown in the left of Figure 7, an airlift reactor contains three regions: air-riser, down-comer, and disengagement zone.Bubbles are sparged into the air-riser, which may be on the inside ...

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Activated Sludge Process | IWA Publishing

Activated Sludge Process | IWA Publishing

I. Stirred Tank Reactor Ideal CSTR has an exponential RTD and is perfectly mixed on a molecular level i.e, is in the state of maximum mixedness. Can the exponential RTD and perfect molecular mixing be approached in practice? It depends on the design and operation of the stirred tank and on the characteristic reaction time. The present invention relates to a method for processing waste stream, i.e., the waste stream by making successive prokaryotic microbial consortia (preferably purple non-sulfur bacteria), followed by contacting with the green algae Chlorella. A first portion of a prokaryotic microorganism consortium assimilated waste, algae assimilate the rest of the waste to produce a substantially purified ...

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6.6.3.2 General Purpose And High Impact Polystyrene

6.6.3.2 General Purpose And High Impact Polystyrene

Biofilm photobioreactors rely on cooperation between algae and bacteria within a single biofilm to treat wastewater. Algae growth produces oxygen, which can subsequently be utilized by aerobic bacteria to degrade organic matter and produce carbon dioxide, which is then utilized as a carbon source by algae. Due to their relatively low maintenance and energy inputs, biofilm photobioreactors ... V R [L] The total working volume of the reactor includes liquid and gas phase; the volumes of the pure liquid are usually not given as would be necessary for mass balancing.. A R [m 2] or [ha] The total surface area of the transparent part of the reactor determines the amount of light which could eventually enter the reactor; detailed analysis is necessary, to calculate how much light can ...

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Design principles of photo‐bioreactors for cultivation of ...

Design principles of photo‐bioreactors for cultivation of ...

Holland) on the three transparent draft tubes of the IPFP (Figure 1). Two-side illuminations at 120 µmol m-2s-1 were realized on each tube for the autotrophic growth of microalgae. Three identical draft tubes were vertically placed and equally distributed throughout the tank. The main design parameters of Appl. Microbiol Biotechnol 38:599±605 (1993). 9 Ogbonna JC, Yada H, Masu H and Tanaka H, A novel internally illuminated stirred tank photobioreactor for large scale cultivation of photosynthetic cells. J Fermentat Bioengng 82:61±67 (1996). 10 Merchuk JC, Ronen M, Giris S and Arad (Malis) Sh, Light±dark cycles in the growth of the red microalga.

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Continuous Stirred Tank Reactors

Continuous Stirred Tank Reactors

inlet flow is constant. Figure 2 shows the block diagram of two tanks of chemical reactor. Fig.1 The simple concentration process control Fig. 2 The block diagram of the two tank system The value of the concentration in the second tank is desired, but it depends on the concentration in the first tank. Therefore the component balances in both Search term. Advanced Search Citation Search. Search

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