Abstract
Rose (Rosa Damascena) is a species being used to produce attar of rose by distilling volatile oils from flowers. One unit of rose flower milled gives about two units of residue in wet weight basis. The present work aims to determine the biogas yield and nutrient reduction potential of rose residue by using a laboratory scale completely mixed batch reactor. Laboratory scale digesters of 2.5 L capacity were used and fed with rose residue, which was digested in a batch reactor for a retention period of 30 days at room temperature. The parameters like total solids (TS), volatile solids (VS), chlorides, Biochemical Oxygen Demand (BOD), Chemical Oxygen Demand (COD), Total Kjeldhal Nitrogen (TKN) were analyzed at 5 day interval. The process removed up to 73%, 45%, 82%, 42%, 58% of TS, VS, chlorides, BOD, TKN respectively, along with biogas production
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