Biological hydrogen production by anaerobic digestion of food waste and sewage sludge treated using various pretreatment technologies

Kim, Seung-Jin; Choi, Kwangkeun; Kim, Jong‐Oh; Chung, Jinwook

doi:10.1007/s10532-013-9623-8

Cited by 61 publications

(15 citation statements)

References 29 publications

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“…This caused physical and chemical changes in the substrate making it easily degradable by the microorganisms. This is in agreement with previous studies in terms of hydrogen production dynamics; however, the increase in sCOD was not as high as the values reported [30,31].…”

Section: Resultssupporting

confidence: 93%

Effect of pretreatment techniques on food waste solubilization and biogas production during thermophilic batch anaerobic digestion

Menon

Ren

Wang

et al. 2015

J Mater Cycles Waste Manag

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The purpose of this study was to optimize the alkaline, ultrasonication, and thermal pretreatment in order to enhance the solubilization of food waste (FW) for the production of volatile fatty acids, hydrogen, and methane in thermophilic batch anaerobic digestion. Initially, the effect of pretreatment techniques in the acidogenic phase was studied, and the optimal combinations of different conditions were determined. It was found that each pretreatment technique affected food waste solubilization differently. Alkaline pretreatment increased hydrogen yield in the acidogenic sludge by four times over control. COD solubilization was increased by 47 % when FW pre-heated at 130°C for 60 min. Ultrasonication at 20 kHz and 45 min reduced processing time to 38 h from the 60-80 h needed in normal operation. Response surface methodology (RSM) was used to optimize a combination of alkaline, ultrasonication, and thermal pretreatment. Optimized conditions were applied to methanogenic single-stage thermophilic AD process, and their impact on biogas production was monitored. Results showed that FW heated at 130°C for 50 min geminates biogas production compared to control experiment. In conclusion, a short thermal pretreatment regime could significant affect biogas production in single-stage thermophilic AD.

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Section: Resultssupporting

confidence: 93%

Effect of pretreatment techniques on food waste solubilization and biogas production during thermophilic batch anaerobic digestion

Menon

Ren

Wang

et al. 2015

J Mater Cycles Waste Manag

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“…PCC 7120 [13] and Chlorella vulgaris ESP6 [21]. There are also some reports indicating that butyric acid/acetic acid ratios are directly proportional to hydrogen yields [13,28]. In our studies we also found that the highest butyric acid/acetic acid ratio was observed in liquid byproducts of thermal pretreatment.…”

Section: Effect Of Pretreatment Methods On Vfa Productionsupporting

confidence: 77%

Fermentative hydrogen and polyhydroxybutyrate production from pretreated cyanobacterial blooms

et al. 2015

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“…Heat shock is the most commonly used methods for treatment of mixed culture. Wide ranges of time, mostly from 15 to 80 minutes and temperature mostly from 60 to 120 °C have been reported in different studies to treat different types of mixed cultures [11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Enhanced mesophilic bio-hydrogen production of raw rice straw and activated sewage sludge by co-digestion

Alemahdi

Man

Rahman

et al. 2015

International Journal of Hydrogen Energy

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Abstract:In this study, batch biohydrogen production by co-digestion of raw rice straw and activated sewage sludge was investigated with different inoculum heat treatment, pH, S/X ratio (based on VS) and substrate sizes under mesophilic condition. In order to achieve a high bio-hydrogen yield and methanogens activity inhibition, heat treatment of inoculum was optimized at different exposure times (30, 45 & 60 min) and temperature ranges (80, 90 and 100 °C) prior to dark fermentation process. Collected data was analysed using response surface methodology (RSM).The heat treatment of inoculum at 100 °C for 60 minutes produced the highest bio-hydrogen yield of 14.22 NmL H2/g VS at concentration of 70.97 % and Production of 0.073 NmLCH4/gVS at 0.17% concentration in total produced biogas. The raw rice straw was also co-digested with heat-treated inoculum at different ratios of volatile solids (2:1, 4:1 and 6:1) and initial pH (4, 4.75 and 5.5) as numerical variables and 4 categories of substrate size ( (250-500 µm], (500 µm-2mm], (2-20mm), [20-30mm]) . The highest bio-hydrogen yield of 14.70 NmL/g VS was recognized at the optimum initial pH of 5.01 and S/X ratio of 4.54:1 using 2-20 mm rice straw.

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Biological hydrogen production by anaerobic digestion of food waste and sewage sludge treated using various pretreatment technologies

Cited by 61 publications

References 29 publications

Effect of pretreatment techniques on food waste solubilization and biogas production during thermophilic batch anaerobic digestion

Effect of pretreatment techniques on food waste solubilization and biogas production during thermophilic batch anaerobic digestion

Fermentative hydrogen and polyhydroxybutyrate production from pretreated cyanobacterial blooms

Enhanced mesophilic bio-hydrogen production of raw rice straw and activated sewage sludge by co-digestion

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