Hydrogen and Methane Production Under Conditions of Anaerobic Digestion of Key-Lime and Cabbage Wastes

Sołowski, Gaweł; Konkol, Izabela; Hrycak, Bartosz; Czylkowski, Dariusz

doi:10.22146/agritech.35848

Cited by 4 publications

(6 citation statements)

References 22 publications

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“…On the OFR analysis, there can be observed that the fermentation of sour cabbage hydrogen production is more sensitive than methane production. This showed that in the case of high VSS [75] there were some ranges improving methane production yield that agreed with comparisons of Nguyen et al [25] (fixing metabolism in the anaerobic digestion of lignocellulose), and Krayzelova et al [76] (reduction of hydrogen sulfide). It can be discerned that after the 11 th day (265 hours) a significant growth of hydrogen production was observed -see Figure 4, due to pH decrease (to 5.1).…”

Section: Total Hydrogen Production Vs Total Hydrogen Sulphite Production and General Discussionsupporting

confidence: 88%

“…Characteristics and investigations showed that sour cabbage possessed the optimal value for DF much higher than was at raw cabbage. Raw cabbage is the '0' step of the ensiling of cabbage [75]. Therefore, the availability of substrate for methane or hydrogen production depends not only on pH, but also on relevant dependent is not too high total solid parameter.…”

Section: Total Hydrogen Production Vs Total Hydrogen Sulphite Production and General Discussionmentioning

confidence: 99%

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Analysis of Biogas Component Production during Anaerobic Digestion of Sour Cabbage in Microaeration Conditions under Different pH Conditions

Sołowski¹

2021

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In the article, were checked influences of microaeration, pH, and VSS (Volatile Suspended Solid) for sour cab-bage anaerobic digestion. Results fermentation of sour cabbage under the condition of small oxygen addition are presented in this research can be classified as dark fermentation or hydrogenotrophic anaerobic digestion. The investigations were carried out for two concentrations 5 g VSS /L and 10 g VSS /L of sour cabbage at pH 6.0. The oxygen flow rates (OFR) for 5 g VSS /L were in the range of 0.53 to 3.3 mL/h for obtaining 2% to 8% of oxygen. In cases of low pH and microaeration, ethylene production was observed at a level below 0.05% in biogas. The highest volume of hydrogen for 5 g VSS/L was obtained for flow rate 0.58 O2 mL/h, giving hydrogen concentration in biogas in the range of 0 to 20%. For VSS 5 g/L and oxygen flow rate 0.58 mL/h; 0.021 L of hydrogen is produced per gram of VSS. In this case, VSS 10 g/L and oxygen flow rate 1.4 mL/h at pH 6.0, 0.03 L of hydrogen is generated per gram. Microaeration from 0.58 mL/h to 0.87 mL/h was propitious for hydrogen production at 5 g VSS/L of sour cabbage and 1.4 mL/h for 10 g/L. Another relevant factor is the volatile suspended solid factor of sour cabbage that caused optimal hydrogen production at VSS 89.32%.

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Section: Total Hydrogen Production Vs Total Hydrogen Sulphite Production and General Discussionsupporting

confidence: 88%

Section: Total Hydrogen Production Vs Total Hydrogen Sulphite Production and General Discussionmentioning

confidence: 99%

Analysis of Biogas Component Production during Anaerobic Digestion of Sour Cabbage in Microaeration Conditions under Different pH Conditions

Sołowski¹

2021

Preprint

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“…In sour cabbage, hydrogen was produced in the case of raw inoculum for five days in neutral pH ( Figure 3 ) [ 36 ] and 25 days in the case of pH 6.0 ( Figure 4 ). Experimental and model results were compared for strictly anaerobic and optimum OFR.…”

Section: Resultsmentioning

confidence: 99%

“…The study aims to modify the ADM-1 model to form DFM-1 (Dark fermentation Model 1), thus providing a method for modelling the growth of bacteria, with the computation of cumulative hydrogen production using numerical methods. The model used successful data from sour cabbage for 5 g VSS/L [ 27 ]. Then the model verified new semi-batch experiments of sour cabbage and glucose.…”

Section: Introductionmentioning

confidence: 99%

Modelling of dark fermentation of glucose and sour cabbage

Sołowski

Pastuszak

2021

Heliyon

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In the article, modified Anaerobic Digestion Models 1 (ADM-1) was tested for modelling dark fermentation for hydrogen production. The model refitting was done with the Euler method. The new model was based on sets of differential equations. The model was checked for hydrogen production from sour cabbage in batch and semi-batch in 5 g VSS (volatile solid suspension)/L and at the semi-batch process from glucose at 5 and 10 g VSS/L. Added parameters determined the conversion of a substrate, hydrogen production, and stress parameters. In the case of a semi-batch process, for one month, cumulative hydrogen production from sour cabbage of 5 g VSS/L was 0.9 L of cumulative hydrogen volume and from glucose 5 g VSS/L (in case of feeding 2 g VSS/L every two days) 2.5 L of cumulative hydrogen volume. At the bacterial population level, hydrogen production was a continuous process at an adequate range of population size and environmental parameters.

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“…The total biogas production equaled: After 5 h DF process terminated at 40 °C for all OFR rates. Thus the results are not presented in the form of cumulative hydrogen production versus time as is usual [39]. The optimum OFR value lies between 0.3 and 1 mL/h.…”

Section: Resultsmentioning

confidence: 99%

Rapid hydrogen generation from cotton wastes by mean of dark fermentation

et al. 2020

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Dark fermentation of textile wastes is discussed in the paper. In the experiment cotton wastes were fermented. Before fermentation the cotton was hydrolyzed using 0.1 M HCl acidic solution. The inoculum was pretreated by means of heat shock for 0.5 h at 105 °C. The fermentation was carried out under mesophilic conditions at a load of 5 g VSS/L, and pH 5. Oxygen was added in small quantities during fermentation. The oxygen flow rates (OFR) were between 0.3 and 1.0 mL/h. The fermentation was carried out for a few days at temperatures between 40 and 43 °C. Hydrogenesis prevailed at the lower temperature (40 °C) and methanogenesis at the higher (43 °C). Conversion of cotton waste to methane (3.4%) was slightly higher than conversion to hydrogen (2.6%). The highest hydrogen production was obtained for OFR 0.8 mL/h and the percentage of hydrogen in biogas was 43%. At higher temperatures (43 °C) no hydrogen production was observed

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Hydrogen and Methane Production Under Conditions of Anaerobic Digestion of Key-Lime and Cabbage Wastes

Cited by 4 publications

References 22 publications

Analysis of Biogas Component Production during Anaerobic Digestion of Sour Cabbage in Microaeration Conditions under Different pH Conditions

Analysis of Biogas Component Production during Anaerobic Digestion of Sour Cabbage in Microaeration Conditions under Different pH Conditions

Modelling of dark fermentation of glucose and sour cabbage

Rapid hydrogen generation from cotton wastes by mean of dark fermentation

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