The effect of sawdust as a bulking agent on the in-vessel composting of food waste in a manually-turned drum

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dc.contributor.author Mayabi, A. O.
dc.date.accessioned 2017-01-17T13:11:44Z
dc.date.available 2017-01-17T13:11:44Z
dc.date.issued 2017-01-17
dc.identifier.issn 1684-5374
dc.identifier.uri http://journals.jkuat.ac.ke/index.php/jagst/index
dc.identifier.uri http://hdl.handle.net/123456789/2487
dc.description.abstract Composting is one approach for recycling organic waste, that mostly consists of kitchen and food residue waste. This can be done at household level by use of in-vessel composters. Sawdust as a bulking agent was used to assess the effect of bulking agent:food waste (BA:FW) ratio on the stabilising process of food waste in an in-vessel composter drum. The drum was turned manually at hourly interval at 2 rpm in 5 minutes. Three BA:FW v/v ratios were studied; 2:1,3:1, and 4:1 using more or less same food waste composition. Temperature, bulk density, moisture, pH and porosity were monitored over a period of 15 days. Temperature generally rose to above 45oc within the first 5 days in all the ratios and started to fall after 10days except for 2:1 ratio that remained high even at the 15th day. The moisture content increased during the process with the highest values occurring in the 2:1ratio. There was an semi-logarithmic relationship between the bulk density and porosity across all BA:FW ratios. The pH increased from the initial value of about 4.5 to between 6 and 7.5. Except for less rapid attainment of thermophilic temperature and sustainability, the 4:1 ratio generally achieved the best composting conditions. This study appears to suggest that well rationed BA:FW mixture may be stabilised rapidly in an in-vessel composter enabling a high turn-over to handle the food waste generated in a household. en_US
dc.language.iso en en_US
dc.publisher Journal of Agricultural Science and Technology, JKUAT en_US
dc.relation.ispartofseries Journal of Agriculture, Science and Technology(JAGST);Vol. 12(2) 2010
dc.subject Bulking agent en_US
dc.subject in-vessel compositing en_US
dc.subject waste stabilisation en_US
dc.title The effect of sawdust as a bulking agent on the in-vessel composting of food waste in a manually-turned drum en_US
dc.type Article en_US


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