Services on Demand
Journal
Article
Indicators
Cited by SciELO
Access statistics
Related links
Cited by Google
Similars in SciELO
Similars in Google
Share
Revista Colombiana de Biotecnología
Print version ISSN 0123-3475
Abstract
CASTRO-MOLANO, Liliana del Pilar et al. Lighting the anaerobic digestion process in rural areas: struvite from cattle manure digestate. Rev. colomb. biotecnol [online]. 2018, vol.20, n.2, pp.78-88. ISSN 0123-3475. https://doi.org/10.15446/rev.colomb.biote.v20n2.71184.
The aim of this research was recovery nutrients (PO4 3- and NH4+ ions) in form of struvite, used cattle manure digestate from low cost anaerobic digester. In order to determinate operating variables (Mg2+: PO4 3- molar ratio, reaction time and stirring speed) an experimental design was developed. Struvite crystal was identified by mean of petrographic microscopy and infrared radiation. The highest recovery rates of 55±4.94 % and 58±7.72 % for NH4+ and PO4 3-, respectively was achieved at 1.5 molar ratio, 50 minutes reaction time and 450 rpm stirring speed. Struvite yield was 295.75 mg/L. These results show that the highest phosphate recovery is achieved with the magnesium concentration (153 mg/L) contained in the cattle manure digestate.
Keywords : cattle manure, digestate; household digester; struvite.