Rapid hydrogen generation from cotton wastes by mean of dark fermentation

SN Applied Sciences

卷:2

Marwa Shalaby¹  Adam Cenian²  Izabela Konkol²  Gaweł Sołowski² 

[1] Department of Chemical Engineering and Pilot Plant, National Research Center in Cairo;

[2] Institute of Fluid-Flow Machinery of Polish Academy of Sciences;

关键词: Dark fermentation;    Hydrogen;    Methane;    Cotton;   

DOI  :  10.1007/s42452-020-03247-3

来源: DOAJ

【 摘 要 】

Abstract 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

【 授权许可】

Unknown