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Preservation methods for the storage of anaerobic sludges

Research paper by H. Castro, M. Queirolo, M. Quevedo, L. Muxí

Indexed on: 01 Feb '02Published on: 01 Feb '02Published in: Biotechnology Letters



Abstract

Different preservation methods were evaluated for the storage of anaerobic sludges: room temperature, refrigeration at 4 °C, freezing at −20 °C and freeze-drying. Specific methanogenic activity for glucose and acetate were used as indicators of the subsequent recovery of the anaerobic sludge. Storage at room temperature and refrigeration resulted in a better conservation of the methanogenic activity than freezing and freeze-drying.