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Please use this identifier to cite or link to this item: http://dspace.lib.cranfield.ac.uk/handle/1826/4124

Document Type: Conference paper
Title: Characterisation of untreated and treated biodegradable wastes
Authors: Godley, Andrew R.
Frederickson, Jim
Lewin, Kathy
Smith, Richard
Blakey, N.
Issue Date: Oct-2007
Citation: A. Godley, J. Frederickson, K. Lewin, R. Smith, N. Blakey, Characterisation of untreated and treated biodegradable wastes, Sardinia 2007, Proceedings of the Eleventh International Waste Management and Landfill Symposium. S. Margherita di Pula, Cagliari, Italy. 1-5 October 2007. Paper 347.
Abstract: As part of a Defra sponsored project (WRT220), approximately 40 biodegradable wastes were characterised according to biodegradability (DR4 and BM100), total PTE content, C:N ratio and biochemical composition. Two leaching tests were employed; upflow percolation test and a one step LS10 test; eluates were analysed for TOC, pH, electrical conductivity, PTEs and a range of cations and anions. This paper contains a limited set of data for a selection of untreated and treated waste types representing four waste treatment processes (composting, MBT, MHT, anaerobic digestion). The DR4 and BM100 tests were found to be appropriate for a wide range of waste types but where possible they should be used in conjunction with other related tests. Longer-term MBT composting processes appeared to produce compost material with reduced ammonium concentrations and extractability of some PTEs. Carbon content (carbon analyzer - LECO) could be estimated as C = LOI/1.9 which is a routine operation. N LECO values were approximately 12% greater than the equivalent N Kjeldahl values.
URI: http://hdl.handle.net/1826/4124
Appears in Collections:Staff publications - School of Applied Sciences

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