||Adsorption of odorous pollutants by active manganese dioxide /
Natusch, David. ;
Hudson, J. L. ;
Solomon, R. L. ;
Tanner, R. ;
||Illinois Univ., Urbana. School of Chemical Sciences.;Environmental Protection Agency, Washington, D.C.;National Environmental Research Center, Research Triangle Park, N.C. Control Systems, Lab.
|| Office of Research and Development, U.S. Environmental Protection Agency ; Available from National Technical Information Service,
Odor control ;
Odor control ;
Manganese oxides ;
Particle size ;
Hydrogen sulfide ;
Flow rate ;
Performance evaluation ;
Beds(Process engineering) ;
Air pollution control
||Research Triangle Park Library/RTP, NC
||Received from HQ
||Region 9 Library/San Francisco,CA
||Some EPA libraries have a fiche copy filed under the call number shown.
||iii, 37 pages : illustrations ; 28 cm.
The report gives results of an investigation of the absorption of odorous pollutants by active manganese dioxide (MnO2). Hydrogen sulfide (H2S), mercaptans, and an amine were adsorbed in a fixed bed of active MnO2 (impregnated on sawdust) and several activated carbons. Pollutant removal efficiencies were measured as functions of H2S concentration, flow rate, particle size, relative humidity, and bed depth. The outlet concentration of H2S from the MnO2-sawdust bed is considerably below that from an activated charcoal bed of the same volume and at the same conditions. The useful capacity of the MnO2-sawdust bed can be greater than four times that of activated carbon. Fundamental studies of the MnO2-sawdust were carried out and preliminary correlations were made between bed efficiency and capacity and filter characteristics such as surface area, percent Mn, K, Na, and C, and the Mn valence state.
Performed by the School of Chemical Sciences, University of Illinois at Urbana-Champaign, under EPA grant no. R-801603, ROAP no. 21-AFB-010, program element no. 1AB015. "June 1974." "EPA-650/2-74-063." Project officer: Belur N. Murthy. Includes "list of references," p. 33.