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.
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Showing 1 to 11 of 11 for “"acid plant"”.
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Effects of adding acid plant sulfur on heap leaching
… to copper ions and elemental sulfur in the heap. Acid plants are used in mines to replenish the raffinate leaching the heaps which consists of sulfuric acid. Molten sulfur carried in rail cars to the acid plant is often accidentally spilled on the ground. The contaminated sulfur cannot be added to …
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Temperature modeling and control of the sulfuric acid plant in an industrial smelter
… sulfur dioxide (SO2). Production of sulfuric acid (H2SO4), from off-gas laden with SO2 is one of the methods used at smelters to reduce the amount of SO2 being released into the atmosphere. The acid plant consists mainly of a catalytic converter, absorption towers and a network of heat …
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The oxidation of sulphur dioxide in Cottrell precipitators of a contact sulphuric acid plant
Thesis: B.S., Massachusetts Institute of Technology, Department of Chemical Engineering, 1931
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Dynamic modelling of catalytic SO2 converter in a sulfuric acid plant of an industrial smelter
… regulations on SO2 emissions, a sulfuric acid plant has become a crucial part of industrial smelters. It converts environmentally harmful SO2, which is generated in smelter furnaces, roasters, and Cu-reactors, into commercially beneficial sulfuric acid. This method is recognized as one of …
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Differential economic multipliers : an extension of Weiss and Gooding and an application to the Eastern Cape Province
… estimation of the impacts of a new manufacturing plant on employment and income in the immediate area. The purpose of this study is to develop a practically applicable differential multiplier model, which can be easily adapted to apply to a range of economic impact studies, and which is not …
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Biochemical Separation of Geographical Strains of Plum Curculio, Conotrachelus nenuphar (Herbst) (Coleoptera: Curculionidae), and Evaluation of Olfactory Attractants in Virginia Orchards
… different trap designs baited with grandisoic acid, plant volatiles, and a combination of pheromone and plant volatiles were tested. In 1999, significantly more plum curculios were captured with Tedders traps baited with grandisoic acid and unbaited control in traps baited with limonene, plum …
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Investigating behaviors of zoonotic and human pathogens on plants
… within the phyllosphere and rhizosphere of these plants is an extremely complex issue. In addition, the CDC estimates that unspecified agents are responsible for 38.4 million out of the 48 million (80 %) cases of foodborne illnesses. It is hypothesized that environmental E. coli not typically …
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A multiscale approach to state estimation with applications in process operability analysis and model predictive control
… chemical engineering examples. The terephthalic acid plant case study successfully incorporates a non-linear model of the first continuously stirred tank reactor into the multiscale state estimator. The paper-rolling case study compares the multiscale state estimator to the Karhunen-Loeve …
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Mineralogical and geochemical characterisation of phosphogypsum waste material and its potential for use as backfill at WMC Fertilizers' Mine site, Phosphate Hill, N-W Queensland
… marine phosphorites are crushed and dissolved (acidulated) in sulphuric and phosphoric acid to produce stronger phosphoric acid and, as a by-product, phosphogypsum (PG). The phosphoric acid is used, with ammonia, for fertilizer production while the PG is permanently stored on-site in gypsum …
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IDENTIFICATION OF THE ROLE OF [METHYL]GLUCURONIC ACID ON ARABINOGALACTAN POLYSACCHARIDES IN ARABIDOPSIS THALIANA
… galactose, and minor sugars such as glucuronic acid (GlcA), fucose and xylose. The arabinogalactan polysaccharides do not decorate classical AGPs exclusively, but they can also be found decorating a wide range of proteins. Arabinogalactan proteins have been implicated in many processes of plant …
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Crop manipulation to improve hybrid radish seed yield and quality : A thesis submitted in partial fulfilment of the requirements for the degree of Doctor of Philosophy at Lincoln University
… the strong apical dominance in the radish plant reduces the ability of secondary stems to produce seeds. Crop manipulation, either by chemical or mechanical means, may be able to increase seed yield by preventing/ reducing lodging and reducing apical dominance. The hypothesis was that crop …