Resumo

CANO-HERNANDEZ, Maribel et al. Characterization of bioles from the anaerobic fermentation of cattle and swine excreta. Agrociencia [online]. 2016, vol.50, n.4, pp.471-479. ISSN 2521-9766.

Anaerobic systems produce biofuels and liquid waste known as bioles. In Sistemas Biobolsa® we evaluated anaerobic fermentation of cattle and pig manure for two months. The difference between the types of cattle and porcine biol obtained was determined by the One Factor Analysis of Variance and the physical and chemical parameters were evaluated. In bioles we daily monitored pH, temperature, electrical conductivity (EC), dissolved oxygen (DO), oxide reduction potential (ORP), total dissolved solids (TDS), percentage of sodium chloride, volatile solids (VS), total solids (ST.), ash, moisture, P, PO4, P2O5, N, Na, K, Ca, Mg, Zn and Cu in its ionic form. With a pH meter (HANNA HI-255) we determined pH, EC, TDS, NaCl, and with a multiparameter analyzer (HACH, HQ40d) OD and redox potential we evaluated. With gravimetric methods, we determined humidity, ST, and ash; we measured macronutrients (P, P2O5, PO4, ammonia nitrogen (NH3-H) and K+) with a nutrient analyzer (HANNA HI-83215 ) and micronutrients with an atomic absorption spectrophotometer (GBC AA 904). All analyses were performed in duplicate. The Sistemas Biobolsa® showed stability in its operation, in mesophilic conditions (variation of ±3σ in each parameter). There was a significant difference in Ca and Mg between types of excreta. Cattle biol showed 8.94 4mS cm-1, 658.9, 80.90 and 581 ppm in CE, NH4+, PO43- and K+ respectively while in porcine boil were 8.4 mS cm-1, 745.0, 39 and 521 ppm. The nutrients content of both bioles allows to be applied as fertilizers.

Palavras-chave : Biol; anaerobic bioreactors; biofertilizers.