Reduction of ammonia inhibition of organic matter degradation by turning during a laboratory-scale swine manure composting

Fidero, Kuok and Hiroshi, Mimoto and Kiyohiko , Nakasaki (2013) Reduction of ammonia inhibition of organic matter degradation by turning during a laboratory-scale swine manure composting. International Journal of WASTE RESOURCES (IJWR), 3 (1). pp. 5-8. ISSN 2252 - 5211

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Official URL: http://www.ijwr.co/index.php/ijwr/article/view/38/...

Abstract

Inhibitory effect of ammonia on the organic matter degradation at the outer region was simulated using a composting system consisted of two miniature-scale reactors with different constant temperature connected in series. The lower and upper reactors were incubated at 70 and 40 oC, respectively. Composting runs were conducted with or without turning. The ammonia inhibition of organic matter degradation in the upper reactor was more severe during the earlier stages of composting without turning, i.e., 24─60 h, when the ammonia concentration supplied from the lower reactor exceeded 500 ppm, than that in composting with daily turning. Furthermore, the different degradation rate of organic matter between composting with and without turning corresponded to the difference in the growth of mesophilic bacteria that was considered to be affected by the ammonia. It was elucidated that turning reduced the ammonia inhibition of degradation of organic material during composting.

Item Type:Article
Uncontrolled Keywords:composting; microbial cell density; organic matter degradation; simple numerical model; swine manure; turning operation
Subjects:T Technology > TP Chemical technology
Divisions:Faculty of Engineering > Department of Chemical Engineering
Faculty of Engineering > Department of Chemical Engineering
ID Code:38748
Deposited By:teknik kimia
Deposited On:06 Mar 2013 09:09
Last Modified:06 Mar 2013 09:09

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