Biogas Production from Wheat Straw using Textile Industrial Wastewater by Co-digestion Process: Experimental and Kinetic Study

Abstract

In the present experimental study, anaerobic co-digestion of wheat straw with textile industry wastewater (TIWW) was evaluated for biogas production. Anaerobic digestion systems were operated at ambient temperature (28-30 ºC) for 20 days. Five different ratios of wastewater with distilled water were added to wheat straw inoculated with cow dung operating in five digesters. Time-rate derivative models, including Gompertz’s model and its related extensions, were used to represent yields. It has been found that the slurry containing wheat straw and cow dung digested with 75% diluted wastewater has the maximum production, while the slurry digested with only wastewater (not diluted with distilled water) has minimum production.