An Innovative and Sustainable Technique That Turns Waste From Sugar Mills Into Energy!

Natural Sugar and Allied Industries located in Osmanabad utilizes a novel and sustainable method to convert its waste from sugar cane into bio CNG. It thus aims to broaden the sugar industry's ongoing exploration of other revenue streams. According to the mill's chairman and managing director, Bhairavnath B. Thombare, this method will enable mills to employ agricultural waste that has until now only been used as manure. Press mud is the term used to describe the agricultural waste produced when cane juice is subjected to numerous filters before being used to extract sugar. Periodically, the filters are cleaned, and the waste is dumped into the mill's yard. For per tonne of crushed cane, close to 3–4% of press mud is produced. Currently, mills decompose this agricultural waste to create manure, which they then distribute to local farmers. Thombare, however, drew attention to the fact that the process of composting removes the gas that, if recovered, can be utilized as fuel. In a nutshell, the procedure would entail treating press mud to lower its biological oxygen demand (BOD) and chemical oxygen demand (COD) levels and separating the natural gas from the slurry.  Thombare continued that the slurry would make for excellent liquid and solid fertilizers while the gas produced would be compressed and supplied to the fuel firm as bio CNG.  Thombare's mill generates close to 40,000 tonnes of press mud throughout the first six months of the sugar season. Thombare said that according to their calculations, in order to run the plant year-round, they would need close to 35,000 tonnes of press mud. As a result, they wouldn't have any trouble finding raw materials. Thombare noted that this would give the sugar mill another source of income.