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.
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Castro, H., Queirolo, M., Quevedo, M. et al. Preservation methods for the storage of anaerobic sludges. Biotechnology Letters 24, 329–333 (2002). https://doi.org/10.1023/A:1014080526608
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DOI: https://doi.org/10.1023/A:1014080526608