کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1281666 1497531 2013 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Biohydrogen and 5-aminolevulinic acid production from waste barley by Rhodobacter sphaeroides O.U.001 in a biorefinery concept
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
پیش نمایش صفحه اول مقاله
Biohydrogen and 5-aminolevulinic acid production from waste barley by Rhodobacter sphaeroides O.U.001 in a biorefinery concept
چکیده انگلیسی


• Waste barley was used for hydrogen and 5-ALA productions in a biorefinery concept.
• Waste barley was acid hydrolyzed and analyzed for several parameters before use.
• Rhodobacter sphaeroides could successfully use waste barley hydrolysate as substrate.
• Considerable amounts of hydrogen and 5-ALA were produced.
• This study significantly contributes a recently developing biorefinery concept.

The production of biohydrogen and 5-aminolevulinic acid (5-ALA) by Rhodobacter sphaeroides O.U.001 was investigated in a biorefinery concept. Waste barley was used as a substrate after acid hydrolysis. The hydrolysate was analyzed in terms of its total simple sugar, organic acid, ammonium, element and total phenol contents. Four different growth media having 5 g/L, 7 g/L, 9 g/L and 11 g/L sugar content were prepared using the waste barley hydrolysate to produce biohydrogen and 5-ALA. The increased sugar concentrations resulted in higher cell density and hydrogen accumulation. Accordingly, the highest cell density (OD660: 1.78) and hydrogen production (0.4 L H2/L culture) were observed in the 11 g/L sugar-containing medium. A 67.4 μM 5-ALA was produced upon vitamin B12 and levulinic acid additions. These results showed that waste barley can be used as a substrate for R. sphaeroides for biohydrogen and 5-ALA production within a biorefinery concept.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 38, Issue 14, 10 May 2013, Pages 5573–5579
نویسندگان
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