Co-fermentation of water hyacinth and beverage wastewater in powder and pellet form for hydrogen production

► Co-fermentation efficiently converted solid waste and wastewater mixture into H2. ► Water hyacinth and beverage mixture (1.6:2.4) pellet was effective in H2 production. ► C/N was key factor in H2 production from water hyacinth and beverage mixture. ► Maximum H2 yield was 13.65 mL H2/g mixture feedstock from co-fermentation.