PRODUCTION OF BIOGAS AND BIOFERTILIZER FROM BIODIGESTION OF CASTOR BEAN CAKE WITH AND WITHOUT ANIMAL MANURE

Authors

  • Elton Eduardo Novais Alves
  • Cecília de Fátima Souza
  • Keles Regina Antony Inoue

DOI:

https://doi.org/10.13083/reveng.v20i6.293

Keywords:

digestão anaeróbia, Ricinus communis, tratamento de resíduos

Abstract

The objective of this research was to quantify the production of biogas, characterize the biofertilizer, resulting from anaerobic digestion of castor bean cake, with and without manure. Bench digesters were operated in batch, containing 2 L of substrate. The three treatments were: castor bean cake with addition of bovine manure and water (T2), castor bean cake with the addition of swine manure and water (T3), with 9 dag kg-1 and ST with three replications. The amount of slurry applied corresponded to 15% of weight of ST substrate. The highest biogas production was observed in T2 (2.03 L), being similar in T1 and T3 (P> 0.05). The biofertilizer T1 showed the highest concentration of Nitrogen (6.13 g L-1). The phosphorus content was greater in T3 (867.80 mg L-1) and pH values, potassium and sodium were similar for all three treatments. The potential of biogas production were higher in T2. It was concluded that the castor bean is a good substrate for the production of biogas and biofertilizer with satisfactory chemical qualities, being observed increase production of this gas when associated with cattle manure.

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Published

2012-12-27

How to Cite

Alves, E. E. N., Souza, C. de F., & Inoue, K. R. A. (2012). PRODUCTION OF BIOGAS AND BIOFERTILIZER FROM BIODIGESTION OF CASTOR BEAN CAKE WITH AND WITHOUT ANIMAL MANURE. Engineering in Agriculture, 20(6), 493–500. https://doi.org/10.13083/reveng.v20i6.293

Issue

Vol. 20 No. 6 (2012)

Section

Rural Buildings and Environment

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