Journal of Biosystems Engineering

Korean Society for Agricultural Machinery (한국농업기계학회)
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Effect of Proximate Composition Ratios for Biogas Production

  • Kim, Min-Jee (Division epartment of Horticulture and Biosystems Engineering, College of Agriculture and Life Sciences, Kangwon National University) ;
  • Kim, Soo-Ah (Division epartment of Horticulture and Biosystems Engineering, College of Agriculture and Life Sciences, Kangwon National University) ;
  • Kim, Sang-Hun (Division epartment of Horticulture and Biosystems Engineering, College of Agriculture and Life Sciences, Kangwon National University)
  • Received : 2017.07.08
  • Accepted : 2017.08.29
  • Published : 2017.09.01
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Abstract

Purpose: The objective of this study was to evaluate the biogas productivity of agricultural by-products (ABPs) based on their proximate composition. Specifically, the effects of proximate composition were investigated, and a new mixing method was developed using various ABPs that are difficult to digest for biogas production. Methods: Experiments were conducted to compare the biogas productivity between a single ABP and a mixture of ABPs that had the same proximate composition as the single ABP. To match the proximate compositions of radish waste and corn distiller's dried grains with solubles (DDGS), mixed ABPs were made from various ABPs. Biogas potential tests (BMP tests) were performed at an organic loading rate (OLR) of 2.5 g VS/L and a feed to microorganism ratio (F/M) of 0.5 under the mesophilic condition. Results: The individual ABPs (radish and corn DDGS) and the mixed ABPs (cabbage waste with skim milk waste, bean-curd waste with skim milk waste, and some others) produced similar amounts of biogas. Conclusions: The new mixing method based on proximate composition can be applied to other ABPs and organic wastes from factories and municipal waste treatment plants to develop renewable energy and effective waste treatment methods.

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References

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