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 10 of 10 for “"biological reduction"”.
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Biological treatment of waste solutions generated from the remediation of perchlorate-contaminated waters
… the feasibility of combining ion exchange and biological reduction to remove perchlorate contamination from waters and eliminate it from the environment. Perchlorate can be removed from water by ion exchange. However, regeneration of these resins creates a waste stream, concentrating the …
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Numerical Modeling Of Dissimilatory Iron Reduction In Sediments At A Field Site
… with scaled-dependent parameters for the biological reduction of hematite. Three possible rate formulations were proposed to describe the bioreduction rate of hematite, and two kinds of simulation were conducted to validate the formulations and parameters with both batch and column …
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Investigation of Hexavalent Chromium Reduction by Aerobic Bacteria in Water and Soil
… remediation technologies. Microbial reduction of Cr(VI) to non-toxic trivalent chromium (Cr(III)) is a promising technique. In this study, five bacteria were isolated from the soil of Cr(VI) contaminated plating facility in Putnam, CT. Then were identified tentatively as Leucobacter …
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The Biosynthesis and Function of Nitrogenase Metalloclusters
Nitrogenase catalyzes the biological reduction of N2 to ammonia (nitrogen fixation). The metalloclusters associated with the nitrogenase components include the [4Fe-4S] cluster of the Fe protein, and the P-cluster [8Fe7S] and FeMo-cofactor [7Fe-9S-Mo-X-homocitrate], both contained within the MoFe …
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Manganese dioxide reduction kinetics by Geobacter sulfurreducens and associated biofilm morphology in a flow-through reactor
… to lower redox states through oxidation and reduction reactions. They utilize more metal than is needed for biosynthesis because they can conserve energy through the reduction of metals. This ability of DMRBs permits them to influence nutrient cycling in marine and lacustrine environments and …
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Development of a sustainable water treatment technology for oxyanions using palladium-based catalysts: catalyst design, reaction mechanisms, and life cycle assessment
… oxyanion water contaminants is catalytic reduction using supported Pd-based catalysts and an electron donor. While the technology is promising, several challenges need to be addressed before it is adapted by water treatment utilities. The overall goal of my thesis is to contribute to the …
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Nitrate Reductase Activity, Nitrate Uptake and Iodine Speciation in the Marine Environment
… because it has long been suspected that the biological reduction of IO<sub>3</sub><sup>–</sup> to I<sup>–</sup> may be mediated by nitrate reductase (NR), this research investigated the ability of NR to catalyze the reduction of iodate to iodide.</p> <p>An improved method for the …
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A technological model for low energy domestic wastewater treatment
… in the 37<sup>o</sup>C reactor.Anaerobic reduction of domestic wastewater sludge and the corresponding methane production were also evaluated using bio-chemical methane potential (BMP) batch assays at ambient temperature and compared to a fixed mesophilic temperature of 37<sup>o</sup>C. …
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Mechanism of Action and Gold Nanoparticle Delivery of Pt(IV) Prodrugs of Cisplatin
… for cisplatin, are believed to be due to biological reduction of Pt(IV) to Pt(II), with the reduction products binding to DNA and other cellular targets. In this work we used pBR322 DNA to capture the products of reduction of oxoplatin, …
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Βιολογική αναγωγή εξασθενούς χρωμίου
Το χρώμιο (Cr) αποτελεί έναν από τους σημαντικότερους ρύπους του φυσικού περιβάλλοντος. Η ευρεία βιομηχανική χρήση του χρωμίου έχει ως αποτέλεσμα την απελευθέρωση μεγάλων ποσοτήτων του μετάλλου στο περιβάλλον κυρίως με τη μορφή του εξασθενούς χρωμίου (Cr(VI)). Το εξασθενές χρώμιο, μία από τις …