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Lehigh University

Environmental Engineering

Anaerobic digestion

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Full-Text Articles in Engineering

Improved Stability Of Methane-Producing Anaerobic Biological Reactors Through Novel Use Of Ion-Exchange Fibers, Yu Tian Jan 2016

Improved Stability Of Methane-Producing Anaerobic Biological Reactors Through Novel Use Of Ion-Exchange Fibers, Yu Tian

Theses and Dissertations

The anaerobic digestion (AD) process uses a series of microbial reactions to convert organic compounds to a methane-rich biogas, and engineered application of this process allows energy recovery from industrial organic waste streams. Poor stability and susceptibility to failure, however, have greatly hindered more frequent application of AD for treatment of industrial wastes. The concern with process stability is particularly true where reactor pH fluctuates due to variations in organic loading. During the organic overloading, the huge difference of growth rate between acetogenic bacteria and methanogenic archaea could induce the accumulation of volatile fatty acids. The accumulated volatile fatty acids ...