Browsing by Author "Chirinda, Ngoni"

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    Bio-conversion of Food Wastes into Vermicompost and Vermiwash
    (International Journal of Science and Modern Engineering (IJISME), 2013-09-10) Manyuchi, Mercy; Phiri, Anthony; Muredzi, Perkins; Chirinda, Ngoni
    Vermicomposting technology is the bio-conversion of organic waste into bio-fertilizers using earthworms. Vermicomposting is widely being used for solid waste management. Various food wastes were vermicomposted over 30 days using Eisenia fetida earthworms. Vermicompost and vermiwash were obtained as vermi-products. The vermicompost nitrogen, phosphorous and potassium composition was 2.1%, 0.29% and 0.19% respectively. Whereas, the vermiwash only contained 0.58% nitrogen and 0.47% potassium. Vermicomposting technology is necessary as a food wastes management strategy.
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    Production of Bio Fuels from Eichhornia Crassipes Algae
    (International Journal of Research Studies in Biosciences (IJRSB), 2014-02-01) Sengudzwa, Thamari; Chirinda, Ngoni; Manyuchi, mercy; Mawere, Cephas
    In a bid to promote renewable energy and control of dam pollution, algae, a plant notorious for growing in waste water dams was used to produce algae oil. Algae plantswere collected from the dam and algae oil was extracted using the Soxhlet procedure. Hexane was used as the solvent. A conversion rate of 14% was obtained for an extraction time of 6 hrs. This algae oil will then be trans-esterified to produce a bio fuel. The bio fuel can be used as an alternative to petrochemical fuel and is sulfur free. Moreover, it is proven to be the cleanest fuel for combustion systems.