Molasses is a extremely thick by-product produced after sugarcane crystallization constitutes giant quantities of biodegradable organics. These natural compounds could be transformed to renewable merchandise via anaerobic digestion. Nevertheless, its anaerobic digestion is restricted resulting from its excessive chemical oxygen demand (COD) and ion focus. The results of nickel (Ni2+) on the stability of anaerobic digestion of molasses had been established by finding out the degradation of natural matter (COD elimination price), biogas yield, methane content material in the biogas, pH, and alkalinity. The outcomes confirmed that there have been no vital results on the stability of pH and alkalinity. Increased COD elimination price and better methane content material was noticed by 2–3% in the digesters receiving 2 and 4 mg/L of Ni2+ in the first part of the experiment. Ni2+ supplemented to reactors at focus 2 mg/L enhanced biogas yield. Overall, it’s recommended that the addition of Ni2+ has some results on the enhancement of biogas yield and methane contents however has no apparent results on the long-lasting stability of the molasses digestion.
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