Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7078414 | Bioresource Technology | 2014 | 5 Pages |
Abstract
In this study, batch tests were conducted to examine the effects of trehalose and glycine betaine as well as potassium on the specific methanogenic activity (SMA), acid and alkaline phosphatase activity of anaerobic biomass and phosphorus release in anaerobic digestion of saline sludge from a brackish recirculation aquaculture system. The results of ANOVA and Tukey's HSD (honestly significant difference) tests showed that glycine betaine and trehalose enhanced SMA of anaerobic biomass and reactive phosphorus release from the particulate waste. Moreover, SMA tests revealed that methanogenic sludge, which was long-term acclimatized to a salinity level of 17Â g/L was severely affected by the increase in salinity to values exceeding 35Â g/L. Addition of compatible solutes, such as glycine betaine and trehalose, could be used to enhance the specific methane production rate and phosphorus release in anaerobic digestion from particulate organic waste produced in marine or brackish aquaculture recirculation systems.
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Physical Sciences and Engineering
Chemical Engineering
Process Chemistry and Technology
Authors
Xuedong Zhang, Rui B. Ferreira, Jianmei Hu, Henri Spanjers, Jules B. van Lier,