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Characterization of recycled mushroom compost leachate by chemical analysis and thermogravimetry-mass spectrometry
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Lyons, Gary, Kilpatrick, Mairead, Sharma, H. S. Shekhar, Noble, Ralph, Dobrovin-Pennington, Andreja, Hobbs, Phil, Andrews, Fiona and Carmichael, Eugene (2008) Characterization of recycled mushroom compost leachate by chemical analysis and thermogravimetry-mass spectrometry. Journal of Agricultural and Food Chemistry, Vol.56 (No.15). pp. 6488-6497. doi:10.1021/jf800487e ISSN 0021-8561.
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Official URL: http://dx.doi.org/10.1021/jf800487e
Abstract
Recycled compost leachate (RCL or euphemistically named "goody water") can be a potent source of foul odor on mushroom substrate production sites and contributes to composting smells. A complex mixture of sulfur compounds, fatty acids, and nitrogen containing compounds is responsible for odor production. Fifty samples, collected from 14 compost production sites in Ireland and the U.K. over a 2 year period, were analyzed for chemical properties and by the rmog ravi metry- mass spectrometry (TG-MS) for compositional differences. Results indicated that aerated samples had lower values of electrical conductivity, redox potential, and dry matter content than nonaerated samples and that the higher thermal stability of aerated samples measured by TGA could be attributed to greater mineralization of the substrate due to aerobic processes. The lower temperatures noted for peak evolution of methane, water, and carbon dioxide from TG-MS analysis suggested that a more energetic process had occurred in aerated RCL storage facilities, producing greater decomposition of macromolecules that volatilized at lower temperatures. Chemical composition, thermal stability of the freeze-dried leachate, pyrolysis profiles, and relative amounts of pyrolysis products were all markers of as to how effective control measures could influence RCL quality.
| Item Type: | Journal Article | ||||
|---|---|---|---|---|---|
| Subjects: | Q Science > QD Chemistry S Agriculture S Agriculture > SB Plant culture |
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| Divisions: | Faculty of Science, Engineering and Medicine > Science > Life Sciences (2010- ) | ||||
| Library of Congress Subject Headings (LCSH): | Leachate, Organic wastes -- Recycling, Compost, Thermogravimetry, Mass spectrometry, Odors, Mushroom culture | ||||
| Journal or Publication Title: | Journal of Agricultural and Food Chemistry | ||||
| Publisher: | American Chemical Society | ||||
| ISSN: | 0021-8561 | ||||
| Official Date: | 13 August 2008 | ||||
| Dates: |
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| Volume: | Vol.56 | ||||
| Number: | No.15 | ||||
| Number of Pages: | 10 | ||||
| Page Range: | pp. 6488-6497 | ||||
| DOI: | 10.1021/jf800487e | ||||
| Status: | Peer Reviewed | ||||
| Publication Status: | Published | ||||
| Access rights to Published version: | Restricted or Subscription Access | ||||
| Funder: | Horticulture LINK Project, Great Britain. Dept. for Environment, Food & Rural Affairs (DEFRA), Horticultural Development Council (Great Britain) (HDC), Northern Ireland. Dept. of Agriculture and Rural Development (DARD) | ||||
| Grant number: | CSA6365/HL0163LMU (HLP) |
Data sourced from Thomson Reuters' Web of Knowledge
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