Factors Affecting Hydrogen Production from Food Wastes by
            <b>
              <i>Clostridium</i>
            </b>
            -Rich Composts

Lay, Jiunn‐Jyi; Fan, Kuo-Shuh; Hwang, Jieng-I; Chang, James-I; Hsu, Ping-Chi

doi:10.1061/(asce)0733-9372(2005)131:4(595)

Cited by 68 publications

(19 citation statements)

References 18 publications

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“…The present study aimed at understanding of the effects of important process variables for fermentative hydrogen production from POME, and was partly based on previous knowledge obtained by Lin and Lay [35], Lay et al [20] and Zhang et al [24]. The hydrogen production ranged from 3.8 to 6:7 l H 2 =l-POME (Table 2).…”

Section: Resultsmentioning

confidence: 98%

“…For instance, Fan et al [19] investigated the effects of initial pH, substrate concentration on biohydrogen production by enriched microflora using response surface methodology. Lay et al [20] investigated factors affecting hydrogen production from food wastes by Clostridium-rich composts using central composite design and factorial design. Although many studies on the effect of variations in culture parameters such as pH, concentration of iron, nitrogen and substrate, as well as other nutritional factors on hydrogen production by anaerobic bacteria, almost all of them were carried out at mesophilic conditions and dominated by Clostridium species [21][22][23][24].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Optimization of simultaneous thermophilic fermentative hydrogen production and COD reduction from palm oil mill effluent by Thermoanaerobacterium-rich sludge

O‐Thong

Prasertsan

Intrasungkha

et al. 2008

International Journal of Hydrogen Energy

178

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Section: Resultsmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Optimization of simultaneous thermophilic fermentative hydrogen production and COD reduction from palm oil mill effluent by Thermoanaerobacterium-rich sludge

O‐Thong

Prasertsan

Intrasungkha

et al. 2008

International Journal of Hydrogen Energy

178

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“…Nitrogen is one of the most essential components in proteins, nucleic acids, and enzymes, and is significant to the growth of hydrogenproducing bacteria and hydrogen production [15]. The most commonly used nitrogen resources include cheaper inorganic nitrogen, such as nitrate nitrogen [16] and ammonia nitrogen [17][18][19][20], and expensive organic nitrogen, such as peptone [21] and yeast extract [22].…”

Section: Introductionmentioning

confidence: 99%

Effects of nitrate concentration on biological hydrogen production by mixed cultures

Wang

Wan

Wang

2009

Front. Environ. Sci. Eng. China

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The effects of nitrate on fermentative hydrogen production and soluble metabolites from mixed cultures were investigated by varying nitrate concentrations from 0 to 10 g N/L at 35°C with an initial pH of 7.0. The results showed that the substrate degradation rate, hydrogen production potential, hydrogen yield, and average hydrogen production rate initially increased with increasing nitrate concentrations from 0 to 0.1 g N/L, while they decreased with increasing nitrate concentrations from 0.1 to 10 g N/L. The maximum hydrogen production potential of 305.0 mL, maximum hydrogen yield of 313.1 mL/g glucose, and maximum average hydrogen production rate of 13.3 mL/h were obtained at a nitrate concentration of 0.1 g N/L. The soluble metabolites produced by the mixed cultures contained only ethanol and acetic acid (HAc) without propionic acid (HPr) and butyric acid (HBu). This study used the Modified Logistic model to describe the progress of cumulative hydrogen production in batch tests. A concise model was proposed to describe the effects of nitrate concentration on average hydrogen production rate.

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“…Also other authors [30,31] confi rmed the low effi ciency of food waste pre-treatment carried out at pH>12. Researchers who did not support the enzymatic hydrolysis of the substrate by the chemical treatment, obtained the comparable amount of hydrogen of 65 mL H 2 /g VSS [30] and 77 mL H 2 /g VSS [31]. …”

Section: Effi Ciency Of Enzymatic Hydrolysis Of Pre-conditioned Homogmentioning

confidence: 99%

Influence of Initial Alkalinity of Lignocellulosic Waste on Their Enzymatic Degradation

Wołczyński¹,

Janosz-Rajczyk²

2014

Archives of Environmental Protection

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Abstract:The presented results of research on the effectiveness of enzymatic hydrolysis of lignocellulosic waste, depending on their initial depolymerisation in alkaline medium were considered in the context of the possibility of their further use in the fermentation media focused on the recovery of energy in the form of molecular hydrogen. The aim of this study was to determine the appropriate dose and concentration of a chemical reagent, whose effi ciency would be high enough to cause decomposition of the complex, but without an excessive production of by-products which could adversely affect the progress and effectiveness of the enzymatic hydrolysis and fermentation. The effect of treatment on physical-chemical changes of homogenates' properties such as pH, COD, the concentration of monosaccharide and total sugars and the concentration of total suspended solids and volatile suspended solids was determined. The enzymatic decomposition of lignocellulosic complex was repeatedly more effi cient if the sample homogenates were subjected to an initial exposure to NaOH. The degree of conversion of complex sugars into simple sugars during enzymatic hydrolysis of homogenates pre-alkalized to pH 11.5 and 12.0 was 83.3 and 84.2% respectively, which should be suffi cient for effi cient hydrogen fermentation process.

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Factors Affecting Hydrogen Production from Food Wastes by Clostridium -Rich Composts

Cited by 68 publications

References 18 publications

Optimization of simultaneous thermophilic fermentative hydrogen production and COD reduction from palm oil mill effluent by Thermoanaerobacterium-rich sludge

Optimization of simultaneous thermophilic fermentative hydrogen production and COD reduction from palm oil mill effluent by Thermoanaerobacterium-rich sludge

Effects of nitrate concentration on biological hydrogen production by mixed cultures

Influence of Initial Alkalinity of Lignocellulosic Waste on Their Enzymatic Degradation

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