Effect of Using Paperboard Bacterial Culture on Fermentative Hydrogen Production from Paperboard Mill Wastewater

Abstract

The effect of paperboard bacterial culture (PBC) supplementation during fermentative hydrogen production under the variation of initial substrate concentration to inoculum (S/X) ratio was studied. The paperboard mill wastewater (PMW) has been used as substrate. The results showed that supplementation of heat-pretreated PBC to PMW substantially improved the hydrogen productivity. Where, the hydrogen yield (HY) increased from 1.72 to 2.63 mmol/gCODinitial by supplementation of PBC to PMW compared to PMW as a sole substrate, with a peak hydrogen production (HP) of 2.4 mmol. Moreover, HP at S/X ratio of 0.3 gCOD/gVS resulted in the highest value of 3.8 mmol, where lower and higher S/X ratios led to deterioration in HP in the range of (65 to 77%). Meanwhile, the highest % soluble/total carbohydrates removal of 72.73% was corresponded to the highest HY (2.1 mmol H2/gCODinitial) and % removal of VSS (63.16%) at 0.3 gCOD/gVS. This indicates that most of produced H2 was generated from the conversion of organic particulates in PMW. The main soluble metabolites analysis showed the mixed acetate-butyrate fermentation type was occurred with small concentrations of propionate and lactate.



Author Information
Ahmed M. Farghaly, Egypt-Japan University of Science and Technology (E-JUST), Egypt
Ahmed Tawfik, Egypt-Japan University of Science and Technology (E-JUST), Egypt

Paper Information
Conference: ACSEE2016
Stream: Environmental Sustainability & Human Consumption: Waste

This paper is part of the ACSEE2016 Conference Proceedings (View)
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