초록
Huge amounts of rotten apples are generated in China, the biggest apple producer in the world. Bio-hydrogen production from apple waste is a promising strategy to treat this biomass waste, while producing hydrogen as renewable energy. In this study, apple waste was taken as a carbon source for bio-hydrogen production from high-efficient photosynthetic bacteria (PSB) HAU-M1. Effect of initial pH, light intensity, temperature and material to liquid ratio on the hydrogen production by HAU-M1 was evaluated using both single-factor design and response surface methodology (RSM). The optimal conditions were initial pH of 7.14, light intensity of 3029.67 lx, temperature of 30.46 <SUP>o</SUP>C, and material to liquid ratio of 0.21, respectively. A maximum specific hydrogen yield (SHY) of 111.85 +/- 1 mL H<SUB>2</SUB>/g TS was obtained under the optimal conditions. In apple-production countries such as China, the success of hydrogen production from apple waste by PSB demonstrated a great application prospect on sustainable utilization of apple waste.