Co-production of hydrogen and methane from potato waste using a two-stage anaerobic digestion process.

Hydrogen and methane co-production from potato waste was examined using a two-stage process of anaerobic digestion. The hydrogen stage was operated in continuous flow under a pH of 5.5 and a HRT of 6h. The methane stage was operated in both continuous and semi-continuous flows under HRTs of 30 h and 90 h, respectively, with pH controlled at 7. A maximum gas production rate of 270 ml/h and an average of 119 ml/h were obtained from the hydrogen stage during the operation over 110 days. The hydrogen concentration contained in the gas was 45% (v/v), on average. The maximum and average gas production rates observed from methane reactor during the 74 days of semi-continuous flow operation were 187 and 141 ml/h, respectively, with an average methane concentration of 76%. Overall, 70% of VS, 64% of total COD in the feedstock were removed. The hydrogen and methane yields from the potato waste were 30 l/kg TS (with a maximum of 68 l/kg) and 183 l/kg TS (with a maximum of 225 l/kg), respectively. The total energy yield obtained was 2.14 kW h/kg TS, with a maximum of 2.74 kW h/kg TS.

[1]  Tatsushi Kawai,et al.  Biological production of hydrogen from cellulose by natural anaerobic microflora , 1995 .

[2]  Jeremy T Kraemer,et al.  Continuous fermentative hydrogen production using a two-phase reactor system with recycle. , 2005, Environmental science & technology.

[3]  Hang-Sik Shin,et al.  Performance of an Innovative Two-Stage Process Converting Food Waste to Hydrogen and Methane , 2004, Journal of the Air & Waste Management Association.

[4]  M. Levandowsky,et al.  Production of hydrogen by microbial fermentation , 1988 .

[5]  Koji Sode,et al.  Production of hydrogen and methane from organic solid wastes by phase-separation of anaerobic process. , 2007, Bioresource technology.

[6]  B. Mattiasson,et al.  Anaerobic batch digestion of solid potato waste alone and in combination with sugar beet leaves , 2004 .

[7]  Chiu-Yue Lin,et al.  Biohydrogen production using an up-flow anaerobic sludge blanket reactor , 2004 .

[8]  J. Benemann,et al.  Hydrogen biotechnology: Progress and prospects , 1996, Nature Biotechnology.

[9]  Michael Cooney,et al.  Two-phase anaerobic digestion for production of hydrogen-methane mixtures. , 2007, Bioresource technology.

[10]  J. Lay,et al.  Feasibility of biological hydrogen production from organic fraction of municipal solid waste , 1999 .

[11]  N. Mizukami,et al.  Direct conversion of cellulosic materials to hydrogen by Clostridium sp. strain no. 2 , 1995 .

[12]  Sang-Eun Oh,et al.  Biological hydrogen production measured in batch anaerobic respirometers. , 2002, Environmental science & technology.

[13]  J. Matsumoto,et al.  Fundamental Studies on Hydrogen Production in the Acid-Forming Phase and Its Bacteria in Anaerobic Treatment Processes – The Effects of Solids Retention Time , 1993 .

[14]  Tong Zhang,et al.  Biohydrogen production from starch in wastewater under thermophilic condition. , 2003, Journal of environmental management.

[15]  Heguang Zhu,et al.  Evaluation of alternative methods of preparing hydrogen producing seeds from digested wastewater sludge , 2006 .

[16]  Sang-Eun Oh,et al.  Biohydrogen gas production from food processing and domestic wastewaters , 2005 .

[17]  A. E. Greenberg,et al.  Standard methods for the examination of water and wastewater : supplement to the sixteenth edition , 1988 .

[18]  Hisatomo Fukui,et al.  Operation of a two-stage fermentation process producing hydrogen and methane from organic waste. , 2007, Environmental science & technology.

[19]  Tong Zhang,et al.  Thermophilic H2 production from a cellulose-containing wastewater , 2003, Biotechnology Letters.

[20]  Veerman.  Food and Nutrition Division, Food and Agriculture Organization of the United Nations (FAO), Study on the Impact of Armed Conflicts on the Nutritional Situation of Children , 1997 .

[21]  R. Dinsdale,et al.  Continuous fermentative hydrogen production from a wheat starch co‐product by mixed microflora , 2003, Biotechnology and bioengineering.

[22]  Chiu-Yue Lin,et al.  Hydrogen production from sucrose using an anaerobic sequencing batch reactor process , 2003 .

[23]  Han-Qing Yu,et al.  Hydrogen production from rice winery wastewater in an upflow anaerobic reactor by using mixed anaerobic cultures , 2002 .