Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 118 for “"Batch experiments"”.
-
An investigation into the use of batch experiments in the determination of the kinetics of ferrous-iron oxidation by Leptospirillum ferrooxidans
… oxidation by Leptospirillum ferrooxidans in batch culture and compare these results with those previously obtained in continuous culture. An additional objective was to assess the validity of a variable maintenance equation by a re-evaluation of previously published literature and to evaluate …
-
Structural effects of chloraminated seawater on the SW30HR reverse osmosis membrane
… to seawater disinfected with monochloramine. Batch experiments with RO membranes were conducted to determine the effect of secondary oxidizing agents formed from the reactions of monochloramine with bromide and iodide on membrane structure. Membrane coupons were exposed to varying …
-
Comparison of the growth and monoclonal antibody production of suspended mammalian cells in three perfusion systems
… hamster ovary cells and IB4 hybridoma cells in batch, fed-batch, and three perfusion systems: the stirred ceramic membrane reactor (SCMR), the alternating tangential flow (ATF) hollow fiber membrane system, and the external spin filter (ESF) system. The batch experiments for each cell line were …
-
An investigation of substrate removal and storage in the activated sludge process
… at a constant food-to-microorganism ratio. Batch experiments were conducted, under aerated and completely mixed conditions, using a domestic wastewater, a paper mill wastewater, and a food processing wastewater. A series of three batch experiments were run for each of these wastes. The …
-
The transport and reaction behavior of arsenic in groundwater : experiments and case studies
… as by dissolved sulfide. To support this theory batch experiments with As(V) and sulfide were conducted. In preliminary experiments at pH 3, up to 30 % was reduced depending on the sulfide. Water samples buffered a pH 6.8 showed lower reduction rates. Batch experiments with MnO2 apparently …
-
Computation and predictive modeling to increase efficiency and performance in cell line and bioprocess development
… of clones are screened through a series of experiments. The Berkeley Lights Beacon® platform can be used as a high-throughput screening tool in cell line development and has been shown to produce clonally-derived cell lines, suitable for the development of a master cell bank. In a typical …
-
Experimental investigations of isotopologue fractionation during microbial methanogenesis
… during microbial methanogenesis. Chapter 2 uses batch and fed-batch culturing systems to investigate the effects of H₂ concentrations on isotopologue fractionation. The results from fed-batch experiments confirmed the previous observation of decoupled ¹³C/¹²C and D/H systematics and provide …
-
Bioreaction and separation in preparative batch chromatographic columns : the hydrology of lactose to yield glucose,galactose and oligosaccharides
… time as in CBRS operation was simulated by fed batch experiments. These experiments were performed in parallel with normal batch experiments where the substrate is mixed almost instantly with the enzyme. The batch experiments enabled samples to be taken every minute and revealed that reaction is …
-
Evaluation of an Effluent Treatment Strategy to Control Nitrogen From a Recirculating Aquaculture Facility
… of the waste fish solids. The results from batch experiments showed that over the range of initial nitrate concentrations studied, complete denitrification was achieved within 6 hrs. sCOD, nitrite, and nitrate profiles across several batch experiments showed that transient nitrite …
-
A comparison of oxygen utilization determination techniques for the activated sludge process
Evaluation of the data from the series of batch experiments has led to the following conclusions: 1. Currently used methods of quantifying oxygen uptake rate, especially for batch reactors, yield values of oxygen utilization considerably lower than those predicted by mass balance considerations for …
-
Extractant Impregnated Membranes for Cr(III) and Cr(VI)
… for Cr(VI) and Cr(III) species, respectively. Batch extraction efficiencies of 97 +/- 3 % were obtained for the optimal conditions. Inductively Coupled Plasma Atomic Emission Spectrometry (ICP-AES) was used for total chromium determination. UV-VIS spectrometry was used for Cr(VI) determination. …
-
A sponge-based moving bed bioreactor for micropollutant removal from municipal wastewater
… removal and membrane fouling. During the batch experiments, non-acclimatized (virgin) sponge showed significant and rapid sorption of hydrophobic compounds. Acclimatized sponge could achieve much higher elimination of some acidic pharmaceutical compounds, such as acetaminophen, diclofenac, …
-
Dissolution, Formation, and Transformation of the Lead Corrosion Product PbO<sub>2</sub>: Rates and Mechanisms of Reactions that Control Lead Release in Drinking Water Distribution Systems
… stirred tank reactors: CSTR). Complementary batch experiments were conducted to compare the effects of water chemistry on the PbO<sub>2</sub> dissolution rate for different solid-water contact times. The equilibrium solubility of plattnerite in the presence of free chlorine was then …
-
Evaluating the potential of phosphorous recovery from wet milling and dry grind corn facilities using chemical precipitation
… calcium to phosphorus molar ratio. Results from batch experiments for diluted light steep filtrate samples (100x) have shown that final total phosphorous could be reduced to as low as 25-30 (mg/l as PO43-) . Results for batch experiments for diluted thin stillage samples (33x) showed a slightly …
-
Simulation and Optimization of Batch Crystallization Processes
… the robust optimal identification and control of batch and semibatch processes. The procedure uses a small number of batch experiments to identify the kinetic parameters and to quantify the parametric uncertainty for multidimensional crystallization processes. Analysis tools are developed which …
-
Antisolvent gibbsite crystallisation from synthetic Bayer liquor
… behaviours under isothermal conditions. The experiments were performed in a series of batch experiments which were divided into two subsets. Firstly, the effect of different caustic concentrations present in the anti solvent on gibbsite yield was tested. Secondly, the effect of different seed …
-
Enhanced Dechlorination of 1,2-Dichloroethane by Coupled Nano Iron-Dithionite Treatment
… and one of the great research interests. Batch experiments combining bimetallic or monometallic nZVI (stabilized or non-stabilized) with sodium dithionite were conducted for the degradation of 1,2-DCA. These experiments have yielded up to 92 % degradation of the initial 1,2-DCA …
-
Treatment of clam-processing wastewater using upflow anaerobic sludge blanket (UASB) technology
… at Na⁺ concentrations above 5,000 ppm in batch experiments. At Na⁺ concentrations above 12,500 ppm inhibition was essentially 100%. Nutrient enrichment did not affect methane production.
-
The effect of sea level rise on radionuclide mobility at contaminated nuclear sites
… of radionuclides during sea level rise. Here batch and column experiments were used to simulate and investigate the effect of these processes on the mobilisation of key radionuclides Tc, 90Sr and U from oxic and reduced sediments under sea level rise scenarios. Strontium-90 was rapidly …
-
Individual and competitive adsorption of MSMA and phosphate onto iron and non-iron soil
… Center located near Stuttgart, Arkansas. Batch experiments were performed to evaluate the effect of Fe, phosphate, and pH conditions on MSMA (V) adsorption. The results indicate: 1) MSMA (V) was strongly adsorbed onto the whole soil ( no Fe removed), implying that adsorption is an …
Page 1 of 6