OPTIMIZATION OF BASAL MEDIUM FOR FERMENTATIVE HYDROGEN PRODUCTION FROM CHEESE WHEY WASTEWATER
Küçük Resim Yok
Tarih
2009
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Taylor & Francis Inc
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
In this study, optimal basal medium composition for fermentative hydrogen production from cheese whey wastewater was investigated in batch tests. Twenty-five different basal medium formulas was prepared, each containing trace metals concentration (Co, Ni, Zn: 0-5 mg/l), macro elements concentration (Mg: 0-200 mg/l; Mn: 0-10 mg/l, Fe: 0-100 mg/l, Ca: 0-1000 mg/l), C/N ratio of 5-50, and yeast extract and l-cycteine concentrations (0-500 mg/l). Each of the experimental setups was conducted as triplicates in 100-ml serum vials at pH 5.5 under mesophilic conditions (36 +/- 1 degrees C). Granular biomass obtained from an industrial scale upflow anaerobic sludge bed bioreactor was used as an initial inoculum. Considering the hydrogen production efficiencies obtained in this study (max. 3.5 mol H-2/mol lactose(consumed) and 218.6 ml H-2/g lactose(consumed)), a successful nutrient formulation for optimum hydrogen production from cheese whey was proposed as follows; CoCl2, NiCl2, ZnCl2: 1.25-2.5 mg/l; CaCl2: 250-500 mg/l: MgCl2: 50-150 mg/l; MnCl2: 2.5-5 mg/l; FeCl2: 50-100 mg/l; yeast extract: 125-250 mg/l; L-cysteine: 125-250 mg/l and C/N ratio: 30-40.
Açıklama
Anahtar Kelimeler
Biohydrogen production, Dark fermentation, Nutrient formulations, Cheese whey, Granular sludge
Kaynak
International Journal of Green Energy
WoS Q Değeri
Q3
Scopus Q Değeri
Cilt
6
Sayı
4
