Abstract by Skylar Van Horne

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Presenter's Name

Skylar Van Horne

Degree Level



Jaron Hansen

Abstract Infomation


Chemistry and Biochemistry

Faculty Advisor

Jaron Hansen


Alkalinity Tracking by Titration in Pretreated Anaerobic Digestion


Anaerobic digestion is a common method for treating waste streams to remove dissolved or suspended organic material and to produce biomethane.  Unfortunately, the anaerobic digestion process typically only removes 30-40% of organic material.  A variety of mechanical, chemical and biological pretreatment methods have been proposed to enhance the efficiency of the anaerobic digestion process.  Common methods for pretreatment of organic waste to increase biomethane production by anaerobic digestion are too costly. Hence there is a need to develop new pretreatment methods to make anaerobic digestion a practical source of renewable energy. Pretreatment of biomass with Caldicellulosiruptor bescii (CB) bacteria has been shown to enhance the digestibility of biomass providing the pH of the solutions are kept between 6.8-7.2.  The results of a study that measured the change in alkalinity as biomass was pretreated and then anaerobically digested will be presented.