Cell Surface and Aggregation Studies of Microbes from Anaerobic Systems

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Abstract
Studies were performed to evaluate cell surface properties of aggregated microbial granules from anaerobic digestion systems. Cell surface properties (hydrophobicity/hydrophilicity) were obtained by contact angle measurements in an aqueous phase. The cells’ charges were evaluated by measuring zeta potential and settlability was used as a measure of aggregating of cells under various experimental conditions. Flocculation tests have shown to be a good indicator of aggregation ability between cells. Aggregation can be modulated by changing those environmental and engineering parameters which can be measured by contact angle and zeta potential.

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