Solution factors affecting the adsorption of phenol onto a siltstone |
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| Institution: | 1. University of Colorado Anschutz Medical Campus, Aurora, Colorado;3. Northwestern University, Chicago, Illinois;10. Washington University School of Medicine, St Louis, Missouri;12. Icahn School of Medicine at Mount Sinai, New York, New York;84. University of California, Los Angeles, Los Angeles, California;4. University Hospitals Cleveland Medical Center, Cleveland, Ohio;95. University of Kansas, Kansas City, Kansas;6. Colorado Clinical and Translational Sciences Institute, Aurora, Colorado;5. Carolinas Medical Center, Charlotte, North Carolina;77. Henry Ford Hospital, Detroit, Michigan;71. Moffitt Cancer Center, Tampa, Florida;7. Geisinger Medical Center, Danville, Pennsylvania;8. Indiana University, Indianapolis, Indiana;1010. University of Texas Southwestern, Dallas, Texas;88. Vanderbilt University, Nashville, Tennessee;9. Virginia Mason Medical Center, Seattle, Washington;123. Dartmouth Hitchcock Medical Center, Lebanon, New Hampshire;106. Brigham and Women’s Hospital, Boston, Massachusetts;1212. University of Texas, San Antonio, Texas;1. College of Safety Science and Engineering, Xi’an University of Science and Technology, Xi’an, Shaanxi 710054, China;2. Ministry of Education Key Laboratory of Western Mine Exploration and Hazard Prevention, Xi’an University of Science and Technology, Xi’an, Shaanxi 710054, China;3. Engineering Research Center of the Ministry of Education, Xi’an University of Science and Technology, Xi’an, Shaanxi 710054, China;1. University of Nebraska Medical Center, School of Allied Health Professions, Medical Nutrition Education, 984045 Nebraska Medical Center, Omaha, NE 68198-4045, USA;2. University of Nebraska Medical Center, College of Public Health, 984375 Nebraska Medical Center, Omaha, NE 68198-4375, USA;3. Department of Nutrition, Harvard School of Public Health, 655 Huntington Avenue, Boston, MA 02215, USA;4. Veterans Affairs Boston Healthcare System and Department of Medicine, Boston University School of Medicine, Boston, MA 02130, USA;5. Channing Laboratory and Pulmonary and Critical Care Division, Department of Medicine, Brigham and Women''s Hospital, Harvard Medical School, USA;1. Department of Food Engineering, Universidad de La Serena, Av. Raúl Bitran N° 1305, Box 599, La Serena, Chile;2. Center for Advanced Studies in Arid Zones, CEAZA, Universidad de La Serena, La Serena, Chile;3. Department of Science and Food Technology, Faculty of Technology, Universidad de Santiago de Chile (USACH), Santiago, Chile;4. Food Engineering Department, Universidad del Bio-Bio, Chillán, Chile;5. Food Engineering Research Group, Faculty of Engineering, Universidad Nacional del Mar del Plata, Juan B. Justo 4302, Mar del Plata 7600, Argentina;6. CONICET (National Council of Scientific and Technical Research), Argentina;7. Departamento de Ciencia de los Alimentos y Tecnología Química, Universidad de Chile, Santiago, Chile |
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| Abstract: | Phenolic compounds are a major pollution by-product of the underground coal gasification process. The adsorption of phenol onto a siltstone was studied using batch techniques and 1:1 crushed siltstone to solution slurries. The siltstone used was associated with a Wyoming coal deposit of a type similar to that which could be gasified in situ. The pH of the solution was found to be the major factor controlling the adsorption of phenol onto the siltstone. Phenol was adsorbed when the solution pH was less than the pKa while no sorption was observed at higher pH. Since in situ gasification sites have an elevated pH post gasification, phenolic compounds may be transported by groundwater in these regions. Significant differences were also found for the adsorption of phenol onto initially wet or dry adsorbate. Desorption studies were also performed. Langmuir and Freundlich adsorption isotherms were used to model the data. |
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