Comparison of mesophilic and thermophilic anaerobic hydrogen production by hot spring enrichment culture

Puhakka, Jaakko A.; Karadağ, Doğan; Nissilä, Marika E.

doi:10.1016/j.ijhydene.2012.02.121

Cited by 17 publications

(3 citation statements)

References 25 publications

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“…Intermediate temperatures (such as 45 °C Fair and Moore, 1937; Fair et al, 1968) as well as lower temperatures, generally give lower results (Fair et al, 1968; Madigan et al, 2012). Unfortunately, a general optimal temperature in the competition of meso versus thermophilic has not been established and results in literature are not conclusive so far because several works report higher H 2 production in mesophilic regime (Escamilla-Alvarado et al, 2012; Lee et al, 2008; Puhakka et al, 2012; Valdez-Vázquez et al, 2006), whereas other research supports the contrary (Akutsu et al, 2008; Cakir et al, 2010; Escamilla-Alvarado et al, 2013; Kargi et al, 2012; Kim and Kim, 2012; Valdez-Vázquez et al, 2005; Zhang et al, 2003). Therefore, given the lack of general conclusions that could predict the effect of temperature, the latter should be tested experimentally, as it was implemented in our experiment by selecting levels 35 °C and 55 °C.…”

Section: Methodsmentioning

confidence: 99%

Biohydrogen production from used diapers: Evaluation of effect of temperature and substrate conditioning

Sotelo-Navarro¹,

Poggi-Varaldo

Turpin-Marion³

et al. 2017

Waste Manag Res

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This research assessed the viability to use disposable diapers as a substrate for the production of biohydrogen, a valuable clean-energy source. The important content of cellulose of disposable diapers indicates that this waste could be an attractive substrate for biofuel production. Two incubation temperatures (35 °C and 55 °C) and three diaper conditioning methods (whole diapers with faeces, urine, and plastics, WD; diapers without plastic components, with urine and faeces, DWP; diapers with urine but without faeces and plastic, MSD) were tested in batch bioreactors. The bioreactors were operated in the solid substrate anaerobic hydrogenogenic fermentation with intermittent venting mode (SSAHF-IV). The batch reactors were loaded with the substrate at ca. 25% of total solids and 10% w/w inoculum. The average cumulative bioH production followed the order WD > MSD > DWP. The bio-H production using MSD was unexpectedly higher than DWP; the presence of plastics in the first was expected to be associated to lower degradability and H2 yield. BioH production at 55 °C was superior to that of 35 °C, probably owing to a more rapid microbial metabolism in the thermophilic regime. The results of this work showed low yields in the production of H at both temperatures compared with those reported in the literature for municipal and agricultural organic waste. The studied process could improve the ability to dispose of this residue with H generation as the value-added product. Research is ongoing to increase the yield of biohydrogen production from waste disposable diapers.

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Section: Methodsmentioning

confidence: 99%

Biohydrogen production from used diapers: Evaluation of effect of temperature and substrate conditioning

Sotelo-Navarro¹,

Poggi-Varaldo

Turpin-Marion³

et al. 2017

Waste Manag Res

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show abstract

“…),Puhakka et al (2012),Lee et al (2008); Valdez-Vázquez et al (2006) have found that highest hydrogen yields, or concentrations corresponded to the mesophilic regime in previous studies. Yet, a few works have observed high H 2 productions at temperatures around 20-28 °C(Muñoz-Páez et al, 2013;Alvarez-Guzmán et al, 2020).…”

mentioning

confidence: 87%

Hydrogen from Dark Fermentation of the Organic Fraction of Waste Diapers: Optimization Based on Response Surface Experiments

Sotelo-Navarro

Poggi‐Varaldo

2021

Front. Energy Res.

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Waste diapers (WD) handling and disposal in Mexico are typically based on their burial in dumping sites and landfills. Practically reclaiming and recycling of WD are non-existent. The clean diapers are composed of cellulose fibres (37–43% db), hemicellulose (5–9%), lignin (4–7%), protein (<1), plastics (polypropylene and polyethylene) (12–16%), absorbent sodium polyacrylate (14–18%), and elastic and adhesives tapes (9–12%). The latter can be valuable resources. WD composition is similar to clean diaper, although humidity is very high, and the ranges of faeces and urine are 1.5–2.5 and 6–9% dry weight, respectively. International literature searches indicate that there is some research on composting, fungal biodegradation, and methanogenic co-digestion of waste activated sludge with the organic fraction of waste diapers (OFWD.) However, research on dark fermentation of OFWD is limited. In this work, the generation of biohydrogen from dark fermentation of OFWD was optimised. We used the response surface methodology (RSM). Independent variables were the temperature of operation (37–55°C), ratio C/N of the feed (30, 40 gC/gN), and initial total solids of the feed (TSi) (15, 25%). The dependent (response) variables examined were Y’H2 (H2 produced per initial g of dry matter), contents of low molecular weight organic solvents and acids, lactic acid, the ratio A/B (acetic-to-butyric acid), and the quotient organic acids C2 to C4-to-solvents. The predicted maximum Y’H2 occurred at the combination of factors of 43 gC/gN, 12% and 31°C; its value was 2.79 mmolH2/gTS; its experimental validation gave 2.48 mmolH2/gTS, which shows a good agreement between values (11% lower than the predicted value). The maximum of Y’H2 with OFWD compared very favourably with bioH2 values obtained from a wide variety of wastes (organic municipal residues, agricultural wastes, etc.) using the same batch type fermentation with intermittent venting. Interestingly, the predicted temperature optimum fell in the lower side of the mesophilic range. Process heating savings would be in the order of 60.0 and 27.2% for thermophilic and mesophilic operation, respectively. In this way, it would be a contribution to the sustainability of the dark fermentation of OFWD. This result was somewhat counterintuitive and strongly indicates the usefulness of the response surface methodolog for analyzing the experimental results and uncovering favourable, although unexpected conditions.

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“…Hydro sinh học ñược coi như nguồn năng lượng thay thế trong tương lai do khi ñốt cháy sinh ra năng lượng lớn, không tạo ra khí CO 2 , vì vậy, không gây ô nhiễm môi trường. Nghiên cứu sản xuất hydro sinh học ñã ñược nhiều quốc gia trên thế giới quan tâm, trong ñó có quá trình sản xuất khí hydro sinh học từ các vi khuẩn kị khí [ 1,6,10]. Các kết quả nghiên cứu quá trình lên men thu khí hydro từ vi khuẩn kị khí cho thấy quá trình này bị ảnh hưởng bởi nhiều yếu tố dinh dưỡng cũng như yếu tố môi trường.…”

Section: Mở đầUunclassified

Optimization of medium components for hyrogen production of anaerobic bacterial strain Thermoanaerobacterium aciditolerans Trau DAt isolated from Vietnam by using response surface methodology

Yến¹,

Hien²,

Huyền

2014

V J Bio

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Comparison of mesophilic and thermophilic anaerobic hydrogen production by hot spring enrichment culture

Cited by 17 publications

References 25 publications

Biohydrogen production from used diapers: Evaluation of effect of temperature and substrate conditioning

Biohydrogen production from used diapers: Evaluation of effect of temperature and substrate conditioning

Hydrogen from Dark Fermentation of the Organic Fraction of Waste Diapers: Optimization Based on Response Surface Experiments

Optimization of medium components for hyrogen production of anaerobic bacterial strain Thermoanaerobacterium aciditolerans Trau DAt isolated from Vietnam by using response surface methodology

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