Location: Cotton Ginning Research
Project Number: 6235-41000-008-00
Start Date: Jul 08, 2010
End Date: Jul 07, 2015
1: Advance roller ginning knowledge 1) by use of high-speed digital video camera to determine geometry of cottonseed and fiber with respect to the stationary knife, rotary knife, and ginning roller as fiber is pulled off the cottonseed at the ginning point with different designs of the stationary and rotary knife, the speed of the rotary knife and ginning roller, and fiber length of different cultivars; 2) investigate new roller covering materials to find frictional properties that allow fiber to stick to the roller surface and slip on the stationary knife surface and at the same time increase ginning rate; 3) as determined from earlier studies, at least 4 styles of experimental lint cleaner grid bars will be built/tested on full-size commercial lint cleaner for ability to remove seedcoat fragments and other lint impurities as well as their effect on fiber properties, 4) develop improved seed cotton reclaimer using an iterative process, 5) evaluate picker design changes relative to different spindle rotation speeds, spindle diameter and spindle shape, and their effect on picked fiber quality; 6) develop gin energy consumption model and gin design and operating recommendations based on actual gin operational variables using on-site survey and field electrical energy use data from existing commercial gin plants. 2: 1) verify seed cotton moisture prediction model over a range more inclusive of target seed-cotton moisture contents and dryer temperatures; 2) build/validate a system using Ion Mobility Spectrometer instrument to detect contaminating plastics in seed cotton in the lab and then at commercial gin; 3) conduct initial lab tests using microwave generator and seed cotton of varying moisture content and bulk density levels to see how well electromagnetic waves penetrate bulk seed cotton and remove moisture, also determine pattern of moisture removal; 4) lab test experimental gin saw tooth designs based on experimental observations for effect on ginned fiber quality; 5) design/test series of experimental saw lint cleaner grid bars as well as a pneumatic cleaner using no grid bars for their cleaning efficiency and effect on fiber quality; 5) identification of foreign matter in lint using imaging techniques developed by ARS will be evaluated by AMS relative to manual classing results on selected classing samples. 3: 1) Crush Pima cottonseed under controlled conditions, separate into meal and oil. Evaluate meal for its value as a dairy feed; oil will be evaluated by cooperators for its bioenergy properties; 2) an experimental machine based on a saw-type lint cleaner will be designed/tested for ability to process/reclaim waste fiberglass insulation. 4: 1) conduct large multi-year field testing program at cooperating gin sites to develop PM2.5 emission estimates, develop robust dataset for cotton gin emissions for use in air quality low-level dispersion models, and document errors associated with federal reference method PM10 and PM2.5 stack and ambient sampling methodologies when exposed to ag particulate matter; 2) experimentally apply gin emission control technology to other ag processes/applications, improve current gin abatement technology.