Composting Of Vegetable Waste  

Oleh:

Chang, James I. ; Tsai, J. J. ; Wu, K. H.

Jenis: Article from Journal - ilmiah internasional
Dalam koleksi: Waste Management & Research vol. 24 no. 4 (Aug. 2006), page 354-362.
Topik: CO2 evolution; Gompertz model; multivariate regression; composting process optimization; vegetable waste; wmr 875–6
Fulltext: 354.pdf (298.65KB)

Isi artikel

The effects of the aeration, seeding, and agitation on the composting of vegetable waste were studied in a laboratory-scale reactor. Experimental results showed that the final product at the end of a 4-day composting period met multiple maturity indices suggested by many researchers. The evolution of carbon dioxide during the composting process could be modelled with a modified Gompertz equation that described the bacteria growth successfully. Multivariate regression analysis was used to study the effects of operating parameters on the carbon conversion. The response surface contour plots were constructed using the regression equation for the examination of the dependence of carbon conversion on operating parameters. The maximum carbon conversion of 14.54% was obtained when the percentage of seeding was set at 14.5%, the air suction rate was set at 2.6 L kg–1 dry-solid min–1, and the agitator operated half of the time, alternating on and off for every 5 min. Future work will focus on the application of the data and the experience gained in this work to composters of pilot and semi-commercial scales.

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