Evaluation of full-scale biofilter media performance
The objective of this study was to characterize the key physical, chemical and biological properties of compost media from a full‐scale biofiltration system used to control VOC emissions. Results of media characterization we re used to assess the need for operational changes and media replacement. B...
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| Veröffentlicht in: | Environmental progress 1999-09, Vol.18 (3), p.205-211 |
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| creator | Cárdenas-González, Beatriz Ergas, Sarina J. Switzenbaum, Michael S. Phillibert, Norman |
| description | The objective of this study was to characterize the key physical, chemical and biological properties of compost media from a full‐scale biofiltration system used to control VOC emissions. Results of media characterization we re used to assess the need for operational changes and media replacement. Biofilter media properties evaluated included: moisture content, pH, total organic carbon (TOC) and nitrogen content in water extracts and solid matrix, oxygen uptake rates, and microbial plate counts including total heterotrophs, oligotrophs, actinomycetes and fungi. Samples we re taken from various locations and depths in the biofilter after three and five years of system operation. Media moisture content was highly variable, with samples from deeper in the bed dryer than surface samples. Low moisture contents we re associated with low pH values and low oxygen uptake rates. Total organic carbon contents in water extracts we re higher than typical biosolids compost in samples near the inlet to the biofilter, possibly due to extracellular polysaccharides. After five years of use, total nitrogen and organic carbon contents in the solid matrix did not significantly differ from initial levels or those in typical biosolids compost. |
| doi_str_mv | 10.1002/ep.670180317 |
| format | Article |
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Results of media characterization we re used to assess the need for operational changes and media replacement. Biofilter media properties evaluated included: moisture content, pH, total organic carbon (TOC) and nitrogen content in water extracts and solid matrix, oxygen uptake rates, and microbial plate counts including total heterotrophs, oligotrophs, actinomycetes and fungi. Samples we re taken from various locations and depths in the biofilter after three and five years of system operation. Media moisture content was highly variable, with samples from deeper in the bed dryer than surface samples. Low moisture contents we re associated with low pH values and low oxygen uptake rates. Total organic carbon contents in water extracts we re higher than typical biosolids compost in samples near the inlet to the biofilter, possibly due to extracellular polysaccharides. 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Total organic carbon contents in water extracts we re higher than typical biosolids compost in samples near the inlet to the biofilter, possibly due to extracellular polysaccharides. 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Media moisture content was highly variable, with samples from deeper in the bed dryer than surface samples. Low moisture contents we re associated with low pH values and low oxygen uptake rates. Total organic carbon contents in water extracts we re higher than typical biosolids compost in samples near the inlet to the biofilter, possibly due to extracellular polysaccharides. After five years of use, total nitrogen and organic carbon contents in the solid matrix did not significantly differ from initial levels or those in typical biosolids compost.</abstract><cop>New York</cop><pub>American Institute of Chemical Engineers</pub><doi>10.1002/ep.670180317</doi><tpages>7</tpages></addata></record> |
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| ispartof | Environmental progress, 1999-09, Vol.18 (3), p.205-211 |
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| language | eng |
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| source | Wiley Online Library All Journals |
| subjects | AIR POLLUTION ABATEMENT BIODEGRADATION BIOREACTORS ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION INDUSTRIAL WASTES ORGANIC COMPOUNDS VOLATILE MATTER WASTE PROCESSING |
| title | Evaluation of full-scale biofilter media performance |
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