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Evaluation of maturity parameters and heavy metal contents in composts made from animal manure

Authors
 Han J. Ko  ;  Ki Y. Kim  ;  Hyeon T. Kim  ;  Chi N. Kim  ;  M. Umeda 
Citation
 WASTE MANAGEMENT, Vol.28(5) : 813-820, 2008 
Journal Title
WASTE MANAGEMENT
ISSN
 0956-053X 
Issue Date
2008
MeSH
Animals ; Cattle ; Korea ; Manure/analysis* ; Metals, Heavy/chemistry* ; Quality Control ; Soil/analysis* ; Swine ; Temperature ; Time Factors
Keywords
Animals ; Cattle ; Korea ; Manure/analysis* ; Metals, Heavy/chemistry* ; Quality Control ; Soil/analysis* ; Swine ; Temperature ; Time Factors
Abstract
The objective of this study was to evaluate a variety of maturity indices and heavy metal concentrations in the composting process. A full-scale study was performed on animal manures (dairy:beef:swine = 50%:30%:20%, w/w) mixed with sawdust using a self-screwed turner over a time period of 63 days. Several chemical compost characteristics and germination indices were monitored on samples collected weekly at a prototype composting facility. NH(4)-N concentrations decreased during the composting time, on the contrary NO(3)-N concentrations increased sharply after 30 days. As composting proceeded, the humic acids content increased from 1.45% to 2.70% of the organic carbon content, whereas the fulvic acids content decreased gradually. Temperature in the compost pile and concentration of NH(3) averaged 32.4 degrees C and 12.9 ppm at the initial composting phase and 69.5 degrees C and 47.3 ppm at the active bio-oxidation composting phase, respectively. Seed germination and germination index (GI) increased during the composting process, and the compost samples at the end of composting phase had GI values greater than 120. Among the composting processes, there were significant differences (p<0.05) in concentration of Zn, Cu and Pb in the compost. In conclusion, the suggested maturity parameter values and metal concentrations of composted animal manures can provide better understanding of maturation process of animal manure compost.
DOI
10.1016/j.wasman.2007.05.010
Appears in Collections:
4. Graduate School of Public Health (보건대학원) > Graduate School of Public Health (보건대학원) > 1. Journal Papers
Yonsei Authors
Kim, Chi Nyon(김치년) ORCID logo https://orcid.org/0000-0002-5693-3307
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/108702
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