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Dynamics of a vertical-flow windrow vermicomposting system

SYSNO ASEP	0481484
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Dynamics of a vertical-flow windrow vermicomposting system
Author(s)	Hanč, A. (CZ) Částková, T. (CZ) Kužel, S. (CZ) Cajthaml, Tomáš (MBU-M)_{RID, ORCID}
Source Title	Waste Management & Research - ISSN 0734-242X Roč. 35, č. 11 (2017), s. 1121-1128
Number of pages	8 s.
Language	eng - English
Country	GB - United Kingdom
Keywords	Large-scale windrow vermicomposting ; continuous feeding ; biowaste
Subject RIV	EE - Microbiology, Virology
OECD category	Microbiology
Institutional support	MBU-M - RVO:61388971
UT WOS	000413730900004
EID SCOPUS	85032393316
DOI	10.1177/0734242X17725161
Annotation	Large-scale vermicomposting under outdoor conditions may differ from small-scale procedures in the laboratory. The present study evaluated changes in selected properties of a large-scale vertical-flow windrow vermicomposting system with continuous feeding with household biowaste. The windrow profile was divided into five layers of differing thickness and age after more than 12months of vermicomposting. The top layer (0-30cm, age <3months) was characterised by partially decomposed organic matter with a high pH value and an elevated carbon/nitrogen (C/N) ratio. The earthworm biomass was 15gkg(-1) with a population density of 125 earthworms per kilogram predominantly found in clusters. The greatest amount of fungi (3.5 mu gg(-1) dw) and bacteria (62 mu gg(-1) dw) (expressed as phospholipid fatty acid analysis) was found in this layer. Thus, the top layer could be used for an additional cycle of windrow vermicomposting and for the preparation of aqueous extracts to protect plants against diseases. The lower layers (graduated by 30cm and by 3months of age) were mature as reflected by the low content of ammonia nitrogen, ratio of ammonia to nitrate nitrogen and dissolved organic carbon, and high ion-exchange capacity and its ratio to carbon. These layers were characterised by elevated values for electrical conductivity, total content of nutrients, available magnesium content, and a relatively large bacterial/fungal ratio. On the basis of the observed properties, the bottom layers were predetermined as effective fertilisers.
Workplace	Institute of Microbiology
Contact	Eliška Spurná, eliska.spurna@biomed.cas.cz, Tel.: 241 062 231
Year of Publishing	2018

Number of the records: 1