University of Khartoum

Treatment of Vinasse Produced from Ethanol Manufacturing Case study: Kenana Sugar Factory

Treatment of Vinasse Produced from Ethanol Manufacturing Case study: Kenana Sugar Factory

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Title: Treatment of Vinasse Produced from Ethanol Manufacturing Case study: Kenana Sugar Factory
Author: Abdelrhman, Omnia Mohamed
Abstract: Vinasse is a residual substance produced as a by-product from the ethanol process, left after ethanol-water alcohol distillation, it represents a major environmental problem for the ethanol industry, KSC discharges Vinasse to the environment directly without treatment which causes a lot of problems, including penetration of Vinasse into underground water, affecting soil, in addition to that it extremely gives bad odors. This study was conducted at Kenana Sugar Factory (KSC) White Nile State to assess the effectiveness of aerobic and anaerobic biological treatment of vinasse before discharge. Samples of waste water were collected and analyzed for Biological Oxygen Demand (BOD), Chemical Oxygen Demand (COD), Total Dissolved Solids (TDS) and pH. The analyses were repeated seven times and the average was taken. The analyzed samples were subjected to two biological treatment processes anaerobic and aerobic treatments consecutively for a retention time of two months. The results revealed that biological treatment reduced the indicators as follows: 80% BOD, 75% COD, 83.5% TDS removal, and pH range from 4.74 to 6.3. Inspite of the treatment the BOD and COD values were still not in agreement with the Sudanese Standards for Industrial Wastewater discharged in environment or discharged in public sewer while TDS and pH values were within the Sudanese Standards for Industrial Wastewater discharged in environment or discharged in public sewer. Also the study showed that anaerobic treatment is more effective than aerobic treatment in reducing BOD and COD. The study recommended that biological treatment should be used for treatment before discharge of Vinasse to environment or to public sewer. It is also recommended that the retention time of anaerobic treatment for Vinasse should be increased in order to adjust the BOD and COD to set specifications.
URI: http://khartoumspace.uofk.edu/123456789/25976


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