In this study, a thermal swing adsorption (TSA) column was used to evaluate the effectiveness of three ligno-cellulose based adsorbents on the removal of water from ethanol/water mixtures of 90, 95, and 97 wt% ethanol. The three adsorbents studied were bleached wood pulp, oak sawdust, and kenaf core. A glass adsorption column with an inside diameter of 2.54 cm was used to generate breakthrough curves to determine the effectiveness of the adsorbents and to allow comparability with starch based adsorbents that are currently used within the ethanol industry. Experimental results indicate that water is preferentially adsorbed allowing for complete dehydration of ethanol. Also, an evaluation has been made of the mass transport properties for the diffusion of water molecules into the porous matrices of the adsorbents as well as the length and velocity of the mass transfer zone.
Microwave and radio frequency heating techniques have proven to be suitable on the laboratory scale and for small scale field studies as energy sources for thermal processing of solvent contaminated hazardous waste and contaminated soils. The process described here is a technique that could be used to remove contaminates from soils or sludges on-site, collect the contaminate in an activated carbon absorption tower, and move the activated carbon off site for regeneration. The data presented show that destruction and removal efficiencies (DRE) of near 100% can be achieved for phenanthrene in simulated API separator sludge and 60% for pentachlorophenol in contaminated soil. A technique to enhance microwave absorption by the addition of carbon particles to the soil or sludge sample to be treated is discussed.4. recover the substrate from an exhaust gas; 5 . and dispose of the contaminate in an environmentallyWhen dealing with materials that are considered to be haz-substrate;acceptable manner.
In this paper, a bang-bang control algorithm developed for double integrator systems is applied to the problem of automated vehicle steering control. This research is part of an on-going project on vehicle control using scale-model vehicle simulator. The controller uses pre-determined, piecewise constant control signals to shape the lateral position and yaw angle responses. Simulation results demonstrate that the proposed control algorithm maintains acceptable performance despite the unmodeled dynamics.
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