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 14 of 14 for “"carbon to nitrogen ratio"”.
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Cover Crop Systems Impact on Biomass Production, Carbon-to-Nitrogen Ratio, Forage Quality, and Soil Health Indices in a Semiarid Environment.
… poor soil fertility, and vulnerability to both wind and water erosion. A soil restorative strategy that has been widely practiced to protect and enhance soil physical, chemical, and biological properties is cover cropping. The integration of cover crops into cropping systems has reduced …
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N-heterocyclic Carbene Synthesis Towards Self-Assembled Monolayers on Gold
… monolayers (SAMs) is a simple and effective way to create functional materials. Traditionally compounds containing a thiol head group are used to generate SAMs on gold surfaces. However, a recent discovery by the Crudden lab demonstrated increased bond strength and surface stability of n …
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Sustainable management of tannery hair waste through composting
… of tannery solid wastes that is often disposed to landfill. However, following increasing environmental legislation restricting the disposal of commercial and industrial organic wastes to landfill, alternative treatment of tannery solid hair waste is necessary. The overall aim of this research …
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Characterization of residuals from novel anaerobic digestion of organic municipal solid waste for application as liquid fertilizer
… digestion is one technology that can be used to address this problem, by transforming organic waste into methane via microbial activity. This process generates energy (in the form of methane) and a residual byproduct that can be used as fertilizer. Bottling and transportation of methane, …
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Investigation of a Commercial Product (BiOWiSH™) for Nitrogen Management
… Commercial Product (BiOWiSH<sup>TM</sup>) for Nitrogen Management</strong></p> <p><strong>Eva Lee</strong></p> <p>BiOWiSH–Aqua, which has the capability of treating nitrogen from wastewater through bioaugmentation, is a commercial product consisting of a blend of microorganisms developed by …
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An investigation into the growth and reproduction of the earthworm <i>Lumbricus terrestris</i> L. under controlled environmental conditions
Earthworm inoculation for soil amelioration has been shown to be valuable in a range of experiments. At present, inoculation on a large scale is limited by the supply of larger deep-burrowing species of earthworm. This work aimed to assess the feasibility of intensively producing deep-burrowing …
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An investigation into the microbial bioconversion of cellulosic waste
… Trichoderma viride XXI 2% 458 was shown to effect the separation of the laminate into its components by .enzynic degradation of the paper. This aicrobially indSced t..separation occurred within 14 days compared to up:to 90 days by purely iphysical meanè. Growth of the fungus within the …
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Optimizing high-rate activated sludge: organic substrate for biological nitrogen removal and energy recovery
… water resource recovery facilities. In addition to carbon capture for energy recovery, A-stages are also being utilized upstream of shortcut biological nitrogen removal (BNR) processes as these BNR processes often require a controlled influent carbon to nitrogen ratio that is lower than required …
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Storage of Pine Tree Substrate Influences Plant Growth, Nitrification, and Substrate Properties
… are no detailed studies that elucidate how storage time impacts PTS chemical, physical, and biological aspects. The objective of this research was to determine how PTS storage time influenced PTS chemical and physical properties, nitrification, and plant growth. Pine tree substrate was …
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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
… Africa. With intense expansion since 2011 due to environmental and oceanic anthropogenic changes, these brown seaweeds have negatively impacted aquaculture and the overall productivity of several major sectors in the Caribbean region. Sargassaceae are nutrient-dense and currently utilized as …
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The Effects of Prescribed Burning on Soil Water Infiltration Rates and Other Select Soil Physical and Chemical Properties in East Texas
… and chemical properties, especially water infiltration, in Western Gulf Coast forests. Soil water infiltration rates were measured 1) pre-burn (before the fire), 2) post-burn (one month after the fire), and 3) at vegetation green-up (three months after the fire). Soil samples were also collected …
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ENHANCING BIOGAS PRODUCTION IN COLD-REGION WASTEWATER TREATMENT USING ULTRASONIC PRETREATMENT AND CO-DIGESTION WITH BREWER’S SPENT GRAIN
… (MWTPs) by converting its organic matter into biogas. However, AD processes have limitations, such as slow hydrolysis rates, low biogas yields, and sensitivity to environmental factors such as temperature and pH. Cold-region MWTPs are particularly challenging locations including the …
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Kōura (Paranephrops planifrons) populations in the Te Arawa lakes: An ecological assessment using the traditional Māori tau kōura harvesting method and recommendations for sustainable management
… acting as shredders, detritivores and predators which in turn influence other macroinvertebrate fauna. Furthermore, freshwater crayfish are increasingly used as indicator species because of the important role they play in aquatic ecosystems and their iconic and heritage values. Kōura or …
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Biofilm development in streams draining from contrasting land use systems.
The transport of terrestrial carbon into streams, down rivers and into the world’s oceans is an important component of the global carbon cycle. Within the carbon cycle, biotic and abiotic processes associated with biofilms in the aquatic environment may play an important role within ecosystems. …