The Meranti Islands Regency is renowned as one of the largest sago flour producers in Indonesia, with a total production of 202,186 tons of sago per year and wastewater production reaching 40,000 liters. It is estimated that daily sago wastewater production amounts to 22,156 kL. Biohydrogen can be produced from lignocellulosic wood waste, crude glycerol from the biodiesel industry, cane molasse…