Bio-hydrogen production from food waste by a co-culture of Clostridium acetobutylicum and Rhodobacter sphaeroides

سال انتشار: 1399
محل انتشار: دوازدهمین کنگره ملی مهندسی عمران
کد COI اختصاصی: NCCE12_225
زبان مقاله: انگلیسی
تعداد مشاهده: 286

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نویسندگان

Solmaz Saadat

Assistant Professor, Department of Civil and Environmental Engineering, Shiraz University, Iran.

Fatemeh Rezaeitavabe

Master of Science Student, Department of Civil and Environmental Engineering, shirza University, iran

Nasser Talebbeydokhti

Professor, Department of Civil and Environmental Engineering, Shiraz University, Iran.

چکیده

Bio-hydrogen production by single-step dark and combined dark and photo fermentation of food waste was investigated in batch fermentation. The combined process contained a mixture of Clostridium acetobuytricum and Rhodobacter sphaeroides with a certain light/dark (1/2) bacteria ratio. In darkfermentation, the cumulative hydrogen production was approximately 14.2 L. In subsequent combined system, the average cumulative hydrogen production was approximately 22.7 L. which was about 1.65 times compared to the amount that produced in dark fermentation only. Meanwhile, the COD decreasedwith a removal efficiency of 22.5% in hybrid system and 14% in dark fermentation. These results demonstrate that food waste could be ideal substrate for bio-hydrogen production and a hybrid process combining dark-photo seems ideal to achieve dual benefits to hydrogen and waste stabilization.

کلیدواژه ها

Bio-hydrogen, Co-culture, Dark fermentation, Photo fermentation, Volatile Fatty Acids.

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