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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 63 for “"CSTR"”.
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Study of the C-curve fluctuation analysis for a CSTR reactor
… random. A 460ml one inlet, one outlet CSTR (Continuous Stirred Tank Reactor) was set up to perform the RTD (Residence Time Distribution) test. A electrical conductivity probe capable of measuring concentration variations in volume elements of the order of 3.00 x 10⁻⁵ml was used to …
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Biophysical and Functional Characterization of the Persulfide Sensor CstR from Staphylococcus aureus
… under control of the transcriptional regulator CstR (Copper-sensing operon repressor (CsoR)-like sulfurtransferase repressor). In this work, sulfide stress, as exogenous H2S or RSS, is identified as a strong inducer of the cst operon. Failure to express this operon or deletions of enzymes within …
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Data-driven Space Economy Investment Strategy Through an Updated Commercial Space Technology Roadmap (CSTR)
The innovation and growth of the space industry over the past two decades has led experts to refer to this period as the "Second Space Race"[1]. The space market is projected to reach $1 trillion in 2030, up from just $280 billion in 2010[2]. During this growth, the landscape of the space sector …
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An investigation into the relationship between process kinetics and microbial community dynamics in a lactate-fed sulphidogenic CSTR as a function of residence time and sulphate loading
The treatment of acid mine drainage and other sulphate-laden wastewaters usingbiological sulphate reduction technology has been shown to offer several advantages.This process effectively removes the following toxicants: sulphate, heavy metals andacidity. Previous studies have also revealed that the …
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Crystal growth and nucleation kinetics of diethylenetriammonium hexachlororhodate (III) salt
… a transient continuous stirred tank reactor (CSTR) and a t-mixer plug flow reactor (PFR), were used to determine nucleation and growth rates. The objective of the configurations was to eliminate kinetic biases that may be caused by mixing at the mesoscale. Transient saturation in the CSTR …
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Biooxidation kinetics of Leptospirillum Ferriphilum attached to a defined solid substrate
… well aerated continuous stirred tank reactor (CSTR) with a 1 litre working volume, operating at a pH of about 1.3 and temperature of 37oC. Attachment and sessile experiments were conducted using a CSTR with similar conditions to the planktonic experimental, however the system was modified by …
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Εκτίμηση της τοξικότητας διαφόρων σταδίων επεξεργασίας αποβλήτων τυροκομικών μονάδων με χρήση βιοδεικτών
… σε αντιδραστήρες αναερόβιας χώνευσης (Η2-CSTR και CH4-CSTR αντίστοιχα), με σκοπό την συνολική εκτίμηση των επιπτώσεών τους στο υδάτινο οικοσύστημα. Αρχικά εκτιμήθηκε ο οικολογικός κίνδυνος από την απόρριψη των αποβλήτων μιας τυροκομικής μονάδας στο ποτάμι του Βουραϊκού. Τα δεδομένα που …
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A prototype dynamic model for the co-treatment of a high strength simple-organic industrial effluent and coal-mine drainage
… CMD in both a continuously stirred tank reactor (CSTR) biological sulfate reduction (BSR) system and a BSR gas-lift (BSR-GL) integrated system. The BSR-GL system recovers elemental sulfur (S0 ) from the H2S produced and stripped from the BSR unit. Furthermore, this study aims to use the prototype …
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Green grass: developing grass for sustainable gaseous biofuel
… to as a Continuously Stirred Tank Reactor (CSTR). The second was a two stage, two phase system employing Sequentially Fed Leach Beds complete with an Upflow Anaerobic Sludge Blanket (SLBR-UASB). These were operated on the same grass silage cut from the same field at the same time. Small …
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Optimización y escalado de la digestión anaerobia de microalgas y aguas residuales urbanas. Una alternativa a las depuradoras tradicionales
… residual y la estabilización del lodo (UASB y CSTR) bajo distintos regímenes térmicos (psicrófilo, ambiental, mesófilo y termófilo), a escala de laboratorio y piloto. Ambos procesos están enmarcados en un sistema de tratamiento de aguas residuales basado en el uso de cultivos mixotróficos …
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A REGION-SENSITIVE FUZZY LOGIC CONTROLLER FOR pH
… operating range. The present work is based on a CSTR in which an influent acid and a base stream get mixed to produce an effluent. The controlled variable chosen was pH in the CSTR and the manipulated variable was flow rate of the base stream. The perfectly mixed model of the CSTR was modified to …
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Characterization of a novel laboratory internal recycle reactor for HTFT studies
… that the reactor behaves as a perfectly mixed CSTR, and but also to confirm that there is indeed sufficient flow through the catalyst bed thus ensuring adequate gas-catalyst contact.
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Transient analysis of diffusion and adsorption under reaction conditions
… The jetloop is a recycle reactor approximating a CSTR. Cumene cracking to benzene and propene was chosen as test reaction. A key question in this thesis was, whether model parameters are theoretically measurable and what errors can be expected and how this information is applied in practice.
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Dynamic modeling and hardware in the loop testing of chemical processes
… such as a continuous stirred tank reactor (CSTR), pump, and valve. Experimental validation of the chemical concentration models and an example plant model are included. Next, for the hardware and control implementation tasks, National Instrument’s VeriStand software is used to integrate a …
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Polymerisation of vinyl monomers in continuous-flow reactors. An experimental study, which includes digital computer modelling, of the homopolymerisation of styrene and methylmethacrylate by anionic and free radical mechanisms respectively in continuous flow-stirred-tank reactors.
… polymerisation of methylmethacrylate in a CSTR. Both heat and mass balance expressions have been described. Conversion, Mn and Mw were monitored. To test the model a reactor was designed and constructed. A detailed description of the reactor and the experimental conditions used for the …
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Nonlinear PID controller
… are performed on two different nonlinear CSTR models. The first simulation produced an unexpected result: that linear output feedback performed better than state feedback for the particular model. The second simulation showed that the nonlinear PID controller performed as well as a complex …
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Qualitative Reasoning Methodology for the Generation of Process Plant Operating Procedures
… of several chemical processes: heat-exchanger, CSTR with and without temperature control and distillation column. The proposed weighted digraph approach is used to support generation of start-up procedures with reference to two case studies: a network of heat-exchangers and an integrated system …
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Treating filtered final effluent from the Cape Flats Wastewater treatment plant with ozone and biologically activated carbon filtration to remove pathogens and organic micropollutants
… assessment methods, i.e. the T10 method and CSTR methods, and the O3/TOC dose ratio as the main parameters to compare and relate the treatment objectives and the assessment methods with one another. The use of the O3/TOC dose ratio is motivated by the findings of Snyder et al. (2014), which …
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Effect of Feed Rate and Solid Retention Time (SRT) on Effluent Quality and Sludge Characteristics in Activated Sludge Systems Using Sequencing Batch Reactors
… (PFR) and the Completely Stirred Tank Reactor (CSTR). PFR systems have a high substrate loading rate, whereas CSTRs have a low substrate loading rate. Research has shown that the PFR configurations produce better sludge quality, in terms of settleability and dewaterability, and subsequently …
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Perturbation studies of excitable media
… and 7.5 in a continuously stirred tank reactor (CSTR), is a good candidate for studies of oscillatory gel systems.;This work also focused on two dynamical phenomena in the ruthenium catalyzed Belousov-Zhabotinsky (BZ) reaction. One is self-organized criticality and the other is periodic forcing …
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