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Title: Converting waste to energy: a sugar mill finds a new way
Source:The Indian Express
Date:25 December 2022

Latur-based Natural Sugar and Allied Industries’ sugar mill in Osmanabad aims to add another dimension to industries’ constant foray into newer avenues for revenues. This mill aims to utilize press mud to manufacture bio CNG. Press mud refers to the agricultural waste obtained when cane juice is repeatedly filtered before being sent for sugar extraction. The filters are cleaned periodically, and the waste is deposited into the mill's yard. Nearly 3 to 4 percent of press mud is obtained per tonne of cane crushed. Currently, mills recycle this agricultural waste as manure by composting it and supplying it to the farmers in the area. The process would involve treating press mud, reducing its BOD (biological oxygen demand) and COD (chemical oxygen demand), and separating the natural gas from the slurry. While the gas obtained would be compressed and sold to the fuel company as bio CNG, the slurry would make for both liquid and solid fertilizers.




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