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    Abstract
2012 (Vol. 4, Issue: 16)
Article Information:

Variety of End Products at Different Ph Conditions and Thermokalite Pretreatment Cooperate with pH Controlling During Anaerobic Digestion

Wu Yun, Zhang Xianming and Zhang Daijun
Corresponding Author:  Wu Yun 

Key words:  Acidification products, anaerobic digestion, pH controlling, thermokalite pretreatment, , ,
Vol. 4 , (16): 2862-2867
Submitted Accepted Published
April 03, 2012 April 23, 2012 August 15, 2012
Abstract:

In this study, we show that the acetic acid was mainly product, accounting for 59.83% of total VFA, propionic acid only accounting for 3.94%, composition of end products is most reasonable. Moreover, when the pH was 4∼5 in anaerobic digestion, it was beneficial to following methanogenic process. In addition, we show that the method that thermokalite pretreatment cooperated with pH controlling could promoted efficiency of acidification and optimize composition of acidification production at same time, cumulative concentration of total VFA increased by 68%, composition of end products was reasonable. Results of analysis from SEM showed that microstructure of kitchen wastes had changed obviously after thermokalite treatment. Results of kinetics analysis showed that acidogenic rate of the kitchen wastes was faster after thermokalite treatment.
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  Cite this Reference:
Wu Yun, Zhang Xianming and Zhang Daijun, 2012. Variety of End Products at Different Ph Conditions and Thermokalite Pretreatment Cooperate with pH Controlling During Anaerobic Digestion.  Research Journal of Applied Sciences, Engineering and Technology, 4(16): 2862-2867.
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ISSN (Online):  2040-7467
ISSN (Print):   2040-7459
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