Methane and Hydrogen Production from Cotton Wastes in Dark Fermentation Process Under Anaerobic and Microaerobic Conditions

Dark fermentation of textile wastes is discussed in the paper. The fermentation was carried out under the following conditions: load 5 g/L, pH was varied in the range 6.23-7.8, and oxygen in small quantities was added. The oxygen flow rates (OFR) were between 1 and 4.6 mL/h. The highest volumes of methane were obtained under anaerobic conditions (pH 6.23 and 7.8), while production of hydrogen was larger under oxygen flow rate 4.6 mL/h and pH value 6.23.