Non-invasive indicators in the poultry manure composting process

International Journal of Recycling Organic Waste in Agriculture

مقاله 12، دوره 13، شماره 1، خرداد 2024

نوع مقاله: Original Article

نویسندگان

Edit Gorliczay^* ؛ Janos Tamas؛ Attila Nagy

Institute of Water and Environmental Management, Faculty of Agricultural and Food Sciences and Environ-mental Management University of Debrecen, Debrecen, Hungary

چکیده

 Purpose: The study presents how to develop and optimize a spectral measurement methodology for monitoring the
composting process of broiler and hen manure using zeolite. Models were set up to determine the pH, electrical conductivity (EC, dS m^-1), and moisture content (MC, w/w%) from reflectance data using spectral indices to establish a rapid, noninvasive, non-destructive method for the monitoring of the composting process.
Method: An open composting experiment was set up, in which a mixture of broiler and hen manure was composted with a zeolite additive (1 w/w%) for 62 days. During the experiment, samples were taken to determine MC, pH, and EC measured from a 10% distilled water extract. Principal component analysis (PCA) was performed for the indices to determine the wavelength ranges that could be used to test the material quality of the compost.
Results: Spectral index-based monitoring methods were developed. The λ2115/λ1993 index-based estimation model
with good performance (RMSE 2.42 m/m%) is suggested to measure the moisture content in composts. The electrical
conductivity (RMSE 1.38 dS m^-1) and pH (RMSE 0.28 pH) are recommended to monitor with the λ812/λ941 index-based
models.
Conclusion: Based on the results, identified indices are suitable for determining the physico-chemical parameters of
compost, which is of great importance for intensive, semi-intensive, and extensive composting plants, as spectral analyses can replace time-consuming analytical analyses. 

کلیدواژه‌ها

MC, EC and pH prediction indices؛ Poultry manure management؛ VIS-spectroscopy؛ NIR-spectroscopy

اصل مقاله

https://oiccpress.com/international-journal-of-recycling-of-organic-waste-in-agriculture/wp-content/uploads/private/ijrowa.2024.1301.12.pdf?