The current aquaculture industry searches for the efficiency of water usage and minimizing the discharge of waste to public water resources. A strategy to accomplish this goal is to recover organic materials and nutrients through anaerobic digestion (AD). The AD process has the advantage of using a vast diversity of residuals, such as food waste (FW), into valuable renewable fuel products such as methane (CH4) and hydrogen (H2). The current study objective was to evaluate the biochemical hydrogen potential (BHP) test of tilapia (Oreochromis niloticus) aquaculture wastewater (AW) by co-digestion of FW. Anaerobic co-digestion of AW and FW for hydrogen production was performed in serum bottles under various volatile solids (VS) concentrations (2.5-25 g VS L-1). The results showed that the maximum specific hydrogen production potential of 66.2 ± 8.8, 62.2 ± 6.3 and 62.83 ± 7 ml H2/g VSadded were obtained with the treatments 12.5x, 15x, and 25x, respectively. The AW (without adding FW) presented the worst yield with 18.7 ± 2.4 mL H2/g SVadded. The increase in hydrogen yield could be attributed to the addition of FW that supplies specific components such as nutrients and trace elements. The co-digestion of AW with FW can be considered a suitable primary substrate and a proper auxiliary substrate for hydrogen production.

https://zoom.us/j/96405918066?pwd=MXAzNldJd0Yzdnp4aWs2TTZIY2RYUT09