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 20 of 20 for “"Scrubbers"”.
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Absorption coefficients in light oil scrubbers
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 1941.
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Evaluation of the Performance of a Charged Droplet Scrubber (Aerosol, Collection)
… The former finds its application in low-energy scrubbers where the collectors usually fall at terminal velocity in the collection chamber, whereas the latter can be used to calculate the collision effeciency as a function of the travel distance of the accelerating collectors that are employed in …
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A Robust Charge/Discharge Monitor for Lead Acid Batteries
… fork lift trucks, golf carts, wheelchairs, floor scrubbers, electric scooters are using lead acid batteries because of its low cost. However, due to improper charging, the batteries cannot be used as long as their theoretical life time. Huge money is spent on this premature failure, and a large …
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Robotic vacuum cleaner design to mitigate slip errors in warehouses
… of dust on the floor, warehouses use industrial scrubbers that users walk behind or ride. This requires manual labor and a regular scheduled maintenance plan that needs to be followed to mitigate the dust accumulation. Therefore, an industrial robotic vacuum cleaner that can continuously clean …
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Evaluating The Effectiveness Of Proprietary Additives In Improving Capture And Sequestration Of Oxidized Mercury In Scrubber Systems
… the green balls, followed by capture in their scrubbers. Moreover, sequestration of the captured mercury from the scrubber slurry could prevent possible (re-)emission by ensuring that the driving force for oxidized mercury capture by scrubber liquids is at an optimum; and prevent recycling of …
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Compact, Self-Cleaning Wet Electrostatic Precipitators
… of efficiency is similar to large industrial scrubbers, but this system uses much less water and energy. These results suggest that this type of self-cleaning air filter could be used in many real-world situations, from industrial sites to power plants, where reliable, low-maintenance air …
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Small Satellite Closed Ecosystems as Enabling Platforms for Low-Cost In-Space Biological Research
… equipment such as feeding robots or waste scrubbers. The motivating mission studied in this work, called SCAMPI (Self Contained Arthropod Module for Permanent Inhabitation), is a 3U CubeSat for demonstration in low Earth orbit (LEO) of the ability to host a closed ecosystem with a volume of …
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Mitigating material supply risks: evaluation of abrasion specific comminution for commercial recovery of indium from waste liquid crystal displays
… to five common production scale attrition scrubbers, the model suggests that one would be capable of recovering 99% of contained indium in a concentrate with an upgrade ratio of 14 with a retention time of four minutes. Further insights into the fundamental operating mechanisms and …
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Vivid: An Operating System Kernel for Radiation-Tolerant Flight Control Software
… the system’s safe state using a pair of memory scrubbers. Vivid introduces voting ducts, an inter-process communication primitive for redundant multithreading that eliminates single points of vulnerability from the voting process. Finally, it defines a sequence of repair that ultimately grounds …
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GHG Implications of Downstream Decisions in the Petroleum Industry: A Life Cycle Assessment
… residual marine fuel with on-board scrubbers to comply with 0.5% S marine fuel affect life cycle GHG emissions by only 2-4% from current typical operations, while using LNG engines or biodiesel blending reduce life cycle GHG emissions by 8% and 51% respectively. A life cycle cost …
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Investigation of Coal Dust Remediation using a Surfactant in an Aqueous Solution
… the miner operators were allowed to activate the scrubbers.
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Effects of Short-Term Dewatering on Grazer Abundance and Algal Biomass in a Wastewater Treatment Algal Turf Scrubber
… of solar energy into chemical energy. Algal turf scrubbers (ATS™) systems mimic natural streams, flowing wastewater over hard substrates designed to encourage attached algae growth. This study focuses on the use of replicated ATS™ systems, because they are low maintenance, are effective for …
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Impacts of reducing shipboard NOx̳ and SOx̳ emissions on vessel performance
… catalytic reduction (SCR) and exhaust gas scrubbers, and four pre-combustion systems, direct water injection (DWI), fuel-water emulsification, exhaust gas recycle (EGR) and scavenge air moistening (SAM). The published performance impacts are applied to the vessels traveling on a …
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Electrochemically-mediated amine regeneration for carbon dioxide separations
… has several advantages over standard thermal scrubbers. EMAR systems do not require reconfiguration of internal turbine systems for low-pressure steam extraction; this makes EMAR more attractive for the retrofit of existing plants. EMAR systems can also generate CO₂ at elevated pressures, …
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Engineering the Environment: Regulatory Engineering at the U.S. Environmental Protection Agency, 1970-1980
… inter-agency activities for the demonstration of scrubbers for smokestack emissions and further application of the control technology approach in energy-related environmental problems. My principal conceptual contribution is "regulatory engineering." I define regulatory engineering as an approach …
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Adsorption of Iodine and Water on Silver-Exchanged Mordenite
… a better strategy in comparison to liquid scrubbers due to the simplicity of system design and low cost. Among the studied adsorbents, reduced silver-exchanged mordenite (Ag0Z) was widely recognized as the state-of-art adsorbent for iodine removal. It has been selected to be used in the …
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Evaluation Of A Low Corrosion Method To Increase Mercury Oxidation And Scrubber Capture
… and thus, increasing the mercury capture from scrubbers.</p> <p>The proposed technology employed a low corrosion method where brominated activated carbon (ESORB-HG-11) was added to green balls to promote mercury oxidation. In Phase I, mercury oxidation potential of ESORB-HG-11 was established. …
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Effects of Dust Controls and Dust Sources on Respirable Coal Mine Dust Characteristics
Respirable coal mine dust (RCMD) continues to pose serious health hazards to workers. Over the past few decades, new regulations, monitoring technologies, and improved dust controls have emerged, and all are based on the presumption that limiting RCMD on the basis of mass will effectively mitigate …
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Filamentous algae as a nutrient scrubber for agricultural drainage treatment
Filamentous algae nutrient scrubbers (FANS) have potential as a novel on-farm treatment system to remove and recover diffuse nutrients from agricultural drainage water. FANS use attached filamentous algae that grow and assimilate nutrients from the water which are removed when algal biomass is …