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 15 of 15 for “"biomass harvesting"”.
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Enhancing microalgal biomass harvesting efficiency using thermoresponsive polymers
… however, the high costs associated with the harvesting of algal biomass pose substantial challenges to its commercialization. This research aims to develop innovative technology for algal cell harvesting, facilitating a cost-competitive and environmentally sustainable biorefinery. …
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Machine system energy requirements and yield sensing for biomass harvesting
… inefficiencies of machinery that are used for harvesting bioenergy crops such as miscanthus currently prohibit commercial production. The performance of a mower-conditioner used to harvest miscanthus was evaluated and modifications were made to allow the machine to operate more efficiently. …
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Integration of a cob separation system into a biomass harvesting combine
… value of the cob has increased the focus on harvesting corn cobs. A corn cob separation system was developed and installed on a single pass biomass harvesting combine. The system included a blower and two fans and the combine was capable of harvesting grain only, grain and stover, and grain …
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Improved Microalgal Biomass Harvesting Using Optimized Environmental Conditions and Bacterial Bioflocculants
… <p><strong>IMPROVED MICROALGAL BIOMASS HARVESTING USING OPTIMIZED ENVIRONMENTAL CONDITIONS AND BACTERIAL BIOFLOCCULANTS</strong></p> <p><strong>DEREK CONTE MANHEIM</strong></p> <p>The cost and energy balance of microalgae biofuel production is sensitive to the algae harvesting …
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Operational characteristics, erosion potential, and implementation of forestry best management practices on biomass harvesting operations
Utilization of woody biomass for energy is expected to increase rapidly and logging residues are a likely feedstock to meet increased demands. Potentials for increased biomass utilization have created concerns regarding possible impacts of using logging residues for energy. The overall goals of …
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A Comparison of Chipper Productivity, Chip Characteristics, and Nutrient Removals from Two Woody Biomass Harvesting Treatments
… are considering chipping whole trees and harvesting residues as a means to meet increased demand of wood chips as a renewable source of energy. However, the profitability, productivity gains, and sustainability of these alternative harvesting methods continue to be an area of research. The …
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The Influence of Selection Silviculture Biomass Harvesting on Soil Carbon, Nutrients, and Respiration in a Northern Mixed-Deciduous Forest
… soil fertility following increased recovery of biomass in northern mixed deciduous forests. Several studies suggest that biomass extraction and enhanced decomposer activity can lead to losses of soil C and nutrients, increased nitrification, and reduced soil CO2 efflux (FCO2) from compaction and …
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Phycoremediation of meat processing wastewater by using microalgae scenedesmus sp.
… assess its potential use as in treating MPWW and biomass by-product production. Scenedesmus sp., a type of microalgae, was employed to investigate the effects of a number of factors namely pH, temperature, light intensity, photo period and reduction in nutrients. The factors were measured through …
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The Prevalence and Operational Feasibility of Utilizing Pre-commercially Thinned Pine as a Woody Biomass Energy Source
… for forest products. Increased demand for woody biomass energy may provide landowners and harvesting contractors an opportunity to utilize PCT residues as a woody biomass energy feedstock, which may wholly or partially offset PCT costs. However, little information is available regarding …
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Vegetative and reproductive biomass allocation responses of herbaceous plant species to induced drought in a semi–arid highland savanna, central, Namibia
… in precipitation, affecting plant growth and biomass allocation. Recurring droughts, intensified by climate change lead to alterations in biomass allocation. Thus resulting in the reduction of medicinal products, livestock fodder, and food sources while disrupting nutrient cycles. This study …
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Direct and Indirect Greenhouse Gas Emissions from Biomass Storage: Implications for Life Cycle Assessment of Biofuels
… of biofuels do not sufficiently account for biomass losses and emissions associated with the harvest and storage of biomass feedstocks, which can require additional fuel and materials use on the farm as well as reducing the effective yield of a crop at the biorefinery gate. The goal of this …
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Transient heterologous protein expression in green microalgae
… more specifically, the preparation of algal biomass of various axenic isolates, and their incorporation into a packed-bed matrix mediated by diatomaceous earth was investigated as an approach to be exploited for the expression of various heterologous proteins, using transient gene insertion …
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Systems informatics and analysis for optimization of biomass feedstock provision
… How to develop an efficient and effective biomass production and provision system is important for successful large-scale biofuels production. The overall objective of this dissertation is to develop multiple-scale supply chain optimization models and decision support tools to facilitate …
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Phosphorus fate and management on the Somerset Levels and Moors Ramsar ditch systems
… of surface water phosphorus, as well as surface biomass abundance and total phosphorus content in the ditch systems. Elevated phosphorus concentrations in the surface water were observed across the site, the highest being 1.88 mg L-1 during the summer, over 10 times the Common Standards …
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Modeling the Production of Microalgal Biodiesel
… process consisting of microalgae cultivation, biomass harvesting, lipid extraction, lipid conversion to biodiesel, and anaerobic digestion of residual biomass. Material and energy flows are estimated using mass and energy balances and equipment performance equations. Operating and capital costs …