Two pre-treatments (granules disruption and heat) were applied to granular sludge to favour the production of 1,3-propanediol (1,3-PDO) from glycerol by non-methanogenic bacteria in expanded granular sludge blanket (EGSB) reactors. Different hydraulic retention times (HRT) were tested to achieve a maximum yield of 0.59 mol of 1,3-PDO/mol of glycerol in the control (no treatment) reactor at an HRT of 12 h. Molec...
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