Chemical, microbial and physical properties of manufactured soils produced by co-composting municipal green waste with coal fly ash

Belyaeva, O. N. and Haynes, R. J. (2009) Chemical, microbial and physical properties of manufactured soils produced by co-composting municipal green waste with coal fly ash. Bioresource Technology, 100 21: 5203-5209. doi:10.1016/j.biortech.2009.05.032


Author Belyaeva, O. N.
Haynes, R. J.
Title Chemical, microbial and physical properties of manufactured soils produced by co-composting municipal green waste with coal fly ash
Journal name Bioresource Technology   Check publisher's open access policy
ISSN 0960-8524
1873-2976
Publication date 2009-11-01
Year available 2009
Sub-type Article (original research)
DOI 10.1016/j.biortech.2009.05.032
Open Access Status DOI
Volume 100
Issue 21
Start page 5203
End page 5209
Total pages 7
Editor A Pandey
C Larroche
Dr. S C Ricke
Place of publication Barking, England
Publisher Elsevier Science
Language eng
Subject C1
961499 Soils not elsewhere classified
050303 Soil Biology
Abstract Increasing proportions of coal fly ash were co-composted with municipal green waste to produce manufactured soil for landscaping use. Only the 100% green waste treatment reached a thermophilic composting phase (≥ P50 °C) which lasted for 6 days. The 25% and 50% ash treatments reached 36–38 °C over the same period while little or no self-heating occurred in the 75% and 100% ash treatments. Composted green waste had a low bulk density and high total and macro-porosity. Addition of 25% ash to green waste resulted in a 75% increase in available water holding capacity. As the proportions of added ash in the composts increased, the organic C, soluble C, microbial biomass C, basal respiration and activities of b-glucosidase, L-asparaginase, alkali phosphatase and arylsulphatase enzymes in the composted products all decreased. It could be concluded that addition of fly ash to green waste at a proportion higher than 25% did not improve the quality parameters of manufactured soil.
Keyword Available water
Sewage-sludge
Available nutrients
Compost
Fly ash
Green waste
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: 2010 Higher Education Research Data Collection
School of Agriculture and Food Sciences
 
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Created: Thu, 03 Sep 2009, 17:44:31 EST by Mr Andrew Martlew on behalf of School of Land, Crop and Food Sciences