Rapid hydrogen generation from cotton wastes by mean of dark fermentation

Sołowski, Gaweł; Konkol, Izabela; Shalaby, Marwa; Cenian, Adam

doi:10.1007/s42452-020-03247-3

Cited by 8 publications

(10 citation statements)

References 56 publications

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“…The qualitative and quantitative assessments of the gases were performed like in the earlier article (Sołowski et al 2020a). A portable biogas analyser (GA5000, Geotech) measured the volume of biogas in the cylinder being at least 0.45 dm 3 .…”

Section: Biogas Contentmentioning

confidence: 99%

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A shift from anaerobic digestion to dark fermentation in glycol ethylene fermentation

Sołowski

Zimiński

Cenian

2021

Environ Sci Pollut Res

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Anaerobic digestion of aqueous glycol ethylene was tested. The process lasted two cycles of 7 days, but after the second cycle, high hydrogen production occurred shift to dark fermentation. The biogas production lasted 14 days, obtaining peak values of hydrogen, and then rapidly stopped. In investigations, the following were checked: dependence of hydrogen, methane and hydrogen sulphide in the process. Mixtures of water with glycol ethylene mass ratio from 0.6 to 0.85 were substrates in experiments. The highest methane production was for water ethylene 0.7 ratio 2.85 L of methane with a yield of 178 mL of methane/g VSS (volatile suspended solids) of glycol ethylene. The optimal ratio of water and glycol ethylene was 0.85 25.5 mL of hydrogen (giving yield 1.71 mL of hydrogen/g VSS of glycol ethylene) and 1.71 mL of hydrogen sulphide emission for a 0.6 ratio. Popular polymer industry wastes, glycol ethylene, can be utilised by anaerobic digestion.

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Section: Biogas Contentmentioning

confidence: 99%

“…1 Scheme of the experimental setup Fig. 2 Cumulative methane production from water-glycol ethylene solution from ratio 0.6 to 0.85 2018), cotton (Sołowski et al 2020a), sour cabbage (Sołowski et al 2019) or wheat straw (Ghimire et al 2018).…”

Section: Hydrogen Productionmentioning

confidence: 99%

A shift from anaerobic digestion to dark fermentation in glycol ethylene fermentation

Sołowski

Zimiński

Cenian

2021

Environ Sci Pollut Res

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“…The obtained hydrogen percentage in biogas was up to 11.19% for 0.58 mL/h (1 st day) in the case of 5 g VSS/L and 22% for 10 g VSS/L at 1.4 mL/h (at 0.7-0.9 th day of the process). The highest hydrogen increments were observed in the first days like in cotton [77] or fruit waste [78]. Thus it did not seem sensible to repeat for lower concentration.…”

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

confidence: 88%

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 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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“…Cotton represents a robust fraction of textile waste [30]. Its chemical composition consisting mostly of cellulose, about 80% DW (Table 1), a polymer structure with high crystallinity that requires pretreatment for successful AD [31].…”

Section: Resultsmentioning

confidence: 99%

Comprehensive Meta-Analysis of Pathways to Increase Biogas Production in the Textile Industry

et al. 2022

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The textile industry is one of the largest environmental polluters in the world. Although waste management via anaerobic digestion (AD) is a sustainable strategy to transform waste into clean energy and water recovery, the efficiency of the AD process is reduced by the presence of recalcitrant materials, chemicals, and toxic contents. This study aims to investigate the performance of several chemical, physical, and biological pretreatments applied to improve the biodegradability of textile waste. We performed a meta-analysis with 117 data extracted from 13 published articles that evaluated the efficiency of pretreatments applied to textile waste prior to AD to increase biogas production measured as methane (CH4) yield. Even though the majority of the studies have focused on the effect of chemical and physical pretreatments, our results showed that the application of biological pretreatments are more efficient and eco-friendlier. Biological pretreatments can increase CH4 yield by up to 360% with lower environmental risk and lower operating costs, while producing clean energy and a cleaner waste stream. Biological pretreatments also avoid the addition of chemicals and favor the reuse of textile wastewater, decreasing the current demand for clean water and increasing resource circularity in the textile industry.

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Rapid hydrogen generation from cotton wastes by mean of dark fermentation

Cited by 8 publications

References 56 publications

A shift from anaerobic digestion to dark fermentation in glycol ethylene fermentation

A shift from anaerobic digestion to dark fermentation in glycol ethylene fermentation

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

Comprehensive Meta-Analysis of Pathways to Increase Biogas Production in the Textile Industry

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