Thermo-Chemical Treatment for Carcass Disposal and the Application of Treated Carcass as Compost
Source abstract
Abstract
A mechanized thermo-chemical treatment system was developed to treat the undecomposed carcass and remediate livestock burial sites. Animal carcasses were thus processed via crushing, mixing, and treatment with quicklime treatment, heat treatment (200–500 °C), and mixing with sawdust. The machinery was applied to two sites where 16,000 chickens and 418 pigs had previously been buried in fiber-reinforced plastic storage bins. No dioxins were detected in the gas discharged during processing, and the concentration of total volatile organic compound, toluene, ethylbenzene, xylene, and styrene were 430.3, 139.0, 18.3, 21.4, and 10.4 μg/m3, respectively, which were below the air pollutant emission standards issued by the Korean Ministry of Environment. Korean standards stipulating the use of treated carcasses as compost (C, N, and P content, heavy metal concentration, Escherichia coli, and Salmonella) were met, but the germination index value was less than 70, not satisfying the criteria. Plant height, leaf length, leaf width, and dry weight of lettuce grown in soil amended with treated carcass product were significantly lower than those grown in low nutrient soil due to the poor germination index of the treated carcass. These results indicate that a composting process is required before the use of the treated carcass as a fertilizer. The addition of zeolite retarded the elution of ammonia from the carcasses and its efficiency was about 87.9%. It is expected that the mechanized thermo-chemical treatment process developed in this study could replace other technologies for the remediation of livestock burial sites.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Agriculture, Soil, Plant Science · Composting and Vermicomposting Techniques · Ecology and Conservation Studies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Integrated Systems Engineering, Hankyong National University, Anseong 17579, Korea
Department of Bioresources and Rural System Engineering, Hankyong National University, Anseong 17579, Korea
Department of Chemical Engineering, Hankyong National University, Anseong 17579, Korea
Department of Horticulture Life Sciences, Hankyong National University, Anseong 17579, Korea
Department of Chemical Engineering, School of Food Biotechnology and Chemical Engineering, Hankyong National University, Anseong 17579, Korea
Neul Purungil Corporation, Buyeo 33144, Korea
Department of Environmental and Safety Engineering, Ajou University, Suwon 16499, Korea
Funding
Korea Institute of Planning and Evaluation for Technology in Food, Agriculture, Forestry and Fisheries
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