Enhancement of thermophilic anaerobic sludge digestion by 70° pre-treatment: Energy considerations

I. Ferrer; E. Serrano; S. Ponsá; F. Vázquez; X. Font

Enhancement of thermophilic anaerobic sludge digestion by 70° pre-treatment: Energy considerations

I. Ferrer, E. Serrano, S. Ponsá, F. Vázquez, X. Font

Research output: Contribution to journal › Article › Research › peer-review

Abstract

The objective of this work was to investigate the effect of a low temperature pre-treatment (70°C) on the thermophilic anaerobic digestion of sewage sludge. Experimental results were used for the calculation of theoretical energy balances of full-scale digesterswith and without pre-treatment step. The 70°C sludge pre-treatment increased sludge solubilization by 10 times and enhanced volatile fatty acids generation. Biogas production increased up to 30-40% and methane content in biogas from 64 to 68-70%. Theoretical calculations showed that additional surplus energy production would be expected by incorporating a 70°C pre-treatment step to a thermophilic reactor. © 2009 DEStech Publications, Inc.

Original language	English
Pages (from-to)	11-18
Journal	Journal of Residuals Science and Technology
Volume	6
Issue number	1
Publication status	Published - 1 Jan 2009

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abstract = "The objective of this work was to investigate the effect of a low temperature pre-treatment (70°C) on the thermophilic anaerobic digestion of sewage sludge. Experimental results were used for the calculation of theoretical energy balances of full-scale digesterswith and without pre-treatment step. The 70°C sludge pre-treatment increased sludge solubilization by 10 times and enhanced volatile fatty acids generation. Biogas production increased up to 30-40% and methane content in biogas from 64 to 68-70%. Theoretical calculations showed that additional surplus energy production would be expected by incorporating a 70°C pre-treatment step to a thermophilic reactor. {\textcopyright} 2009 DEStech Publications, Inc.",

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AU - Ferrer, I.

AU - Serrano, E.

AU - Ponsá, S.

AU - Vázquez, F.

AU - Font, X.

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N2 - The objective of this work was to investigate the effect of a low temperature pre-treatment (70°C) on the thermophilic anaerobic digestion of sewage sludge. Experimental results were used for the calculation of theoretical energy balances of full-scale digesterswith and without pre-treatment step. The 70°C sludge pre-treatment increased sludge solubilization by 10 times and enhanced volatile fatty acids generation. Biogas production increased up to 30-40% and methane content in biogas from 64 to 68-70%. Theoretical calculations showed that additional surplus energy production would be expected by incorporating a 70°C pre-treatment step to a thermophilic reactor. © 2009 DEStech Publications, Inc.

AB - The objective of this work was to investigate the effect of a low temperature pre-treatment (70°C) on the thermophilic anaerobic digestion of sewage sludge. Experimental results were used for the calculation of theoretical energy balances of full-scale digesterswith and without pre-treatment step. The 70°C sludge pre-treatment increased sludge solubilization by 10 times and enhanced volatile fatty acids generation. Biogas production increased up to 30-40% and methane content in biogas from 64 to 68-70%. Theoretical calculations showed that additional surplus energy production would be expected by incorporating a 70°C pre-treatment step to a thermophilic reactor. © 2009 DEStech Publications, Inc.

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