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 13 of 13 for “"Recalcitrant Compounds"”.
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Efficacy of Catalytic Ozonation Advanced Oxidation Processes Compared to Traditional Ozone-Based Advanced Oxidation Processes for Degradation of Recalcitrant Compounds
… their efficiency for degradation of ozone-recalcitrant compounds. With the world’s population increasing and water becoming a scarce resource, it is important to improve current water recycling methods. Recycling water will play a large role in accommodating the increasing demand, but it …
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Comparison of Two Advanced Oxidation Processes for Their Production of Hydroxyl Radicals and Evaluation of a UV/Ozone AOP at Varying UV Fluence for Treating Diclofenac
… Water reuse runs the risk of reintroducing recalcitrant compounds that can accumulate in our bodies and environment. Advanced treatment methods that degrade these compounds are vital to protect our health and the health of the environment while providing necessary water resources. Advanced …
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Characterization of TPH biodegradation patterns in weathered contaminated soil
… The slow phase was controlled by the presence of recalcitrant compounds which decreased in number and concentrations from static microcosms to columns to slurry reactors, and generally with nutrient addition. Nutrient addition enhanced degradation for all sandy soil treatments, but only slurry …
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Anaerobic biodegradation of selected organic compounds with and without inhibition of sulfate reducing bacteria
… In addition, biodegradation rates of these compounds at various initial concentrations with and without inhibition of sulfate reducing bacteria were determined along with anaerobic biodegradation rate constants for each of the compounds studied. Rates of methanol biodegradation were only …
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Organic Phosphorus Dynamics and Contributions to Eutrophication in a Shallow, Freshwater Bay
… the distribution of various labile and recalcitrant compounds. Many of these molecules are associated with porewater or easily extractable mineral surfaces providing a link to the benthic organic matter and phosphorus fractions available to microorganisms. Additionally, the organic …
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Prediction of the Degradation of Emerging Contaminants During Oxidative Treatment via Analysis of Reaction Rate Constants
… have been developed and implemented to remove recalcitrant emerging contaminants left by conventional treatment processes. The current understanding of the removal efficacy of AOPs for emerging contaminants is limited. This study analyzes the ability of an AOP involving ozone and multi-walled …
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Chemical controls on the cycling and reactivity of marine dissolved organic matter
… of carbon containing thousands of unique compounds. To describe the complex dynamics that govern the biological transformation and decomposition of compounds in this molecular black box, models of DOM reactivity use chemical characteristics, as well as environmental parameters, to describe …
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Chemical Controls on the Cycling and Reactivity of Marine Dissolved Organic Matter
… of carbon containing thousands of unique compounds. To describe the complex dynamics that govern the biological transformation and decomposition of compounds in this molecular black box, models of DOM reactivity use chemical characteristics, as well as environmental parameters, to describe …
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An investigation of recalcitrant organic compounds in leachates
Recalcitrant organic compounds remain a key challenge in landfill leachate management as they are resistant to microbial degradation and have potential to damage the water environment. Conventional leachate characterisation methods are time consuming and limited by their inability to provide …
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Role of Dissolved Organic Nitrogen in the Soil Nitrogen Cycle of Forest Ecosystems
… only slightly decreased. Dissolved organic N was recalcitrant in spruce-Oa and cypress-Oa extracts, indicating that this DON could add to the formation of stable soil N pools. As various additions of NO3- never influenced DON biodegradation, it is concluded that microbes do not necessarily prefer …
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Removal of refractory contaminants from mature landfill leachate utilizing fungi and evaluation of lignocellulosic enzymatic activity
The aim of this research was to evaluate the refractory contaminants removal efficiency from the MLL deploying selected fungi and to investigate their lignocellulosic enzymatic activities. Among the six deployed fungal species (Trichoderma asperellum, Cladosporium sp., Penicillium sp., Tyromyces …
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Improving the anaerobic co-digestion of pelagic Sargassum and food waste into biogas and a bio-fertiliser using hydrothermal pre-treatment: Concept to application in the Caribbean
… to nitrogen ratio below 20:1 and the presence of recalcitrant compounds such high insoluble fibre, salt, polyphenol and sulfur content result in a low biomethane potential. Hydrothermal pre-treatment and co-digestion are viable processes which can be applied to these brown seaweeds for biogas …
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Upgrading hydrothermal liquefaction biocrude oil from wet biowaste into transportation fuel
… the formation of hydrocarbons, and mitigated the recalcitrant compounds in aqueous products under the HTL processes. In order to elucidate the role of the ash content under the HTL processes, model algae, Chlorella, with different amounts of representative ash content (egg shells in this study) …