Removal of NH3 by a peat biofilter without and with nitrifier |
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| Affiliation: | 1. Unidad de Estudios Superiores de Tultitlán, Universidad Mexiquense del Bicentenario, Tultitlán, Estado de Mexico, Mexico;2. Centro de Investigación y Estudios Avanzados del IPN, Departamento de Biotecnología y Bioingeniería, Mexico DF, Mexico;3. Departamento de Ingeniería Ambiental, Universidad de Quintana Roo, Chetumal, Quintana Roo, Mexico;1. National Autonomous University of Mexico, Morelos Campus, Paseo Cuauhnahuac 8532, Col. Progreso, Jiutepec, Morelos 62550, Mexico;2. Mexican Institute of Water Technology, Paseo Cuauhnahuac 8532, Col. Progreso, Jiutepec, Morelos 62550, Mexico;1. ICRA, Catalan Institute for Water Research, Scientific and Technological Park of the University of Girona, 17003, Girona, Spain;2. LEQUiA, Laboratory of Chemical and Environmental Engineering, University of Girona, Campus Montilivi, 17071, Girona, Spain;1. IIHR Hydroscience and Engineering, University of Iowa,300 Riverside Drive, Iowa City, IA, 52242, USA;2. US Department of Agriculture, Agricultural Research Service (USDA-ARS), National Laboratory for Agriculture and Environment,2150 Pammel Drive, Ames, IA 50011, USA;3. US Department of Agriculture, Agricultural Research Service (USDA-ARS), Henry A. Wallace Beltsville Agricultural Research Center,10300 Baltimore Avenue, Beltsville, MD 20705, USA;4. Department of Animal and Food Sciences, University of Delaware, 237 Townsend Hall, Newark, DE 19716, USA;5. Biosystems & Agricultural Engineering Department, Oklahoma State University, 111 Ag Hall, Stillwater, OK 74078, USA;6. US Department of Agriculture, Agricultural Research Service (USDA-ARS), Cotton Production and Processing Research, 1604 E FM 1294, Lubbock, TX 79403, USA;7. Department of Civil and Environmental Engineering, University of Maryland, 1173 Glenn L. Martin Hall, College Park, ML 20742, USA |
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| Abstract: | Ammonia was deodorized using fibrous peat on laboratory-scale. The removal of NH3 by the peat was principally by physical and chemical adsorption of NH3 with functional groups of humic substances of the peat. The NH3 adsorption capacities of the various peats tested ranged from 10 to 20 g-N/kg·dry peat, and were decreased by neutralization with Ca(OH)2. The removal of NH3 by nitrification could be achieved by seeding the peat with nitrifying bacteria. The maximum removal rate of NH3 was about 70 percent of the nitrifying capacity which was, in this study, quantified by 48 h nitrifying capacity. |
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