Continuous H2 and CH4 production from high-solid food waste in the two-stage thermophilic fermentation process with the recirculation of digester sludge

Lee, Dong Yeol; Ebie, Yoshitaka; Xu, Kai; Li, Yu You; Inamori, Yuhei

doi:10.1016/j.biortech.2009.03.037

Cited by 222 publications

(80 citation statements)

References 23 publications

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“…This proves that the fermentation with recycle sludge can increase the COD removal in anaerobic process. This was confirmed by previous researchers who have demonstrated that COD removal efficiency in the fermentation with recycle sludge was lower than fermentation without recycle sludge [11][12][13] .…”

Section: Effect Of Recycle Sludge On Cod Removalsupporting

confidence: 87%

Production of Biogas from Palm Oil Mill Effluent at Pilot Scale: Effect of Recycle Sludge

Irvan¹,

Trisakti²,

Maulina³

et al. 2018

Orient. J. Chem

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An anaerobic digestion of palm oil mill effluent (POME) for production of biogas was carried out at pilot scale under thermophilic condition. The objective of this research is to maintain short hydraulic retention time (HRT) and high degradation of the POME to biogas by applying recycle sludge. Fresh POME from PTPN IV without further treatment was used as feed. The fermentation process occurred in a digester tank with the type of continuous stirred tank reactor has a volume of 3 m 3 equipped with electrical heaters, mixer, insulators, and baffles in it. To create continuous operation, fresh POME was fed intermittently. A series of experiments with and without recycle sludge were conducted with 616 litres palm oil mill effluent/day feed rate, temperature of feed tank 70 o C, digester tank temperature of 55 o C, stirring rate of 37.5 rpm, six days of hydraulic retention time, and 34% of recycle sludge. The result showed that by extending solid retention time in return sludge process where 34% of digested slurry recycled to the digester, improvement of volatile solid (VS) degradation was obtained around 82.83% at HRT of 6 days. Then, chemical oxygen demand (COD) removal efficiency could be reached until 81% by performing recycle sludge.

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Section: Effect Of Recycle Sludge On Cod Removalsupporting

confidence: 87%

Production of Biogas from Palm Oil Mill Effluent at Pilot Scale: Effect of Recycle Sludge

Irvan¹,

Trisakti²,

Maulina³

et al. 2018

Orient. J. Chem

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“…Conventional hydrogen production methods are not cost-effective because they require high energy like steam reforming of hydrocarbons, electrolysis of water and non-catalytic partial oxidation of fossil fuels [5]. Due to the current oil crisis and pollution causing effects of nonrenewable energy sources advancement in renewable and ecofriendly energy technologies have been increased [6].…”

Section: Introductionmentioning

confidence: 99%

Biohydrogen Production from Co-Digestion of High Carbohydrate Containing Food Waste and Combined Primary and Secondary Sewage Sludge

Arain¹,

Mahar²,

Sahito³

2018

Mehran Univ. res. j. eng. technol.

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In this paper, FW (Food Waste) and SS (Sewage Sludge) were co-digested for biohydrogen production.After characterization both FW and SS were found as better option forbiohydrogen production. FW was rich in carbohydrate containing specially rice, which was added as more than 50% and easily hydrolyzable waste. FW is considered as an auxiliary substrate for biohydrogen production and high availability of carbohydrate in FW makes it an important substrate for the production of biohydrogen. On the contrary, SS was rich in protein and has a high pH buffering capacity, which makes it appropriate for co-

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“…Preliminary batch assays were carried out at initial organic loadings of 15,20, , in stirred 1.5-l reactors at 55 °C. The results showed all hydrogen was produced within the first 24 hours after feeding and the highest load tested gave the maximum hydrogen production (0.047 m 3 H 2 kg -1 VS, H 2 30%).…”

mentioning

confidence: 99%

“…This affects the HRT, which typically ranges from 2 to 5 days in a continuous or semi-continuous fed system. Twophase approaches using FW as substrate without recirculation have been tested over a wide range of organic loadings [14,15,16,17,18,19], and in general showed a specific hydrogen production (SHP) below 71 m 3 H 2 kg -1 VS. Only a few studies have used a two phase approach with recirculation of the AD effluent [11,14,16,20].…”

mentioning

confidence: 99%

Biohydrogen production from food waste in batch and semi-continuous conditions: Evaluation of a two-phase approach with digestate recirculation for pH control

Chinellato

Cavınato

Bolzonella

et al. 2013

International Journal of Hydrogen Energy

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The research investigated the production of Biohythane in a two-phase anaerobic digestion process treating food waste as substrate. Preliminary batch assays were carried out at initial organic loadings of 15,20, , in stirred 1.5-l reactors at 55 °C. The results showed all hydrogen was produced within the first 24 hours after feeding and the highest load tested gave the maximum hydrogen production (0.047 m 3 H 2 kg -1 VS, H 2 30%). Similar loadings were then tested in a two-phase system. Hydraulic retention times of 3 and 12 days were applied to the first and second reactor respectively. In order to keep the pH at ~5.5, either supernatant or whole digestate from the methanogenic reactor was recirculated to the first phase. Results showed that hydrogen was produced (0.117 Nm 3 kg -1 VS, 47.7%) when recirculating whole digestate with an organic loading rate of 20 kg TVS m -3 day -1 .

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Continuous H2 and CH4 production from high-solid food waste in the two-stage thermophilic fermentation process with the recirculation of digester sludge

Cited by 222 publications

References 23 publications

Production of Biogas from Palm Oil Mill Effluent at Pilot Scale: Effect of Recycle Sludge

Production of Biogas from Palm Oil Mill Effluent at Pilot Scale: Effect of Recycle Sludge

Biohydrogen Production from Co-Digestion of High Carbohydrate Containing Food Waste and Combined Primary and Secondary Sewage Sludge

Biohydrogen production from food waste in batch and semi-continuous conditions: Evaluation of a two-phase approach with digestate recirculation for pH control

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