Resource Recovery from Municipal Waste and Bio Solids (Digestate) Through Vermicomposting: A Waste Management Initiative
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Publication Details
Author list: Manyuchi MM, Mbohwa C, Muzenda E
Place: NEW YORK
Publication year: 2017
Journal: 2017 IEEE INTERNATIONAL CONFERENCE ON INDUSTRIAL ENGINEERING AND ENGINEERING MANAGEMENT (IEEM) (2157-3611)
Journal acronym: IN C IND ENG ENG MAN
Start page: 2054
End page: 2057
Number of pages: 4
eISBN: 978-1-5386-0948-4
ISSN: 2157-3611
Languages: English-Great Britain (EN-GB)
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Abstract
In this study, municipal waste and anaerobic digestate (bio solids) were co-vermicomposted in a bid to properly manage waste at disposal sites. Municipal waste and bio solids in the ratio 2:1 were vermicomposted in a vermireactor for 45 days. Process parameters such as moisture, temperature and pH as well as the nutrient composition in terms of nitrogen, phosphorous and potassium (NPK) content of the vermicompost were closely monitored. Approximately 250 Eisenia Foetida, a species of the red worms was used as the vermicomposting inoculants. After the 45 days, a rich vermicompost with an NPK composition of 6.18%, 3.27% and 8.26% respectively. The optimum conditions for producing this vermicompost were moisture content>27%, temperature >18.6% and neutral pH. An addition of the bio solids to municipal waste during vermicomposting adds value to the nutritional composition of the vermicompost.
Keywords
bio solids, Bio waste, municipal waste, vermicasts, Vermicompost
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