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Treatment of Anaerobically Digested Distillery Effluent by Aspergillus Niger

Sushil Kumar ShuklaP. K. MishraK. K. SrivastavaP. Srivastava

出版	SSRN, 2010
URL	http://books.google.com.hk/books?id=NhffzwEACAAJ&hl=&source=gbs_api

註釋The objective of the study was to evaluate the potential options for further reduction of the persistent dark brown color and Chemical Oxygen Demand (COD) from the anaerobically digested distillery effluents collected from the Lord's distillery, Nandganj, Ghazipur, India. Chemical coagulation followed by aerobic degradation using Aspergillus niger was evaluated for its effectiveness in reducing the COD and color from the anaerobically treated effluents. Various coagulants such as potash alum, ferric chloride and aluminum chloride have been used during the experiments. The biological parameters such as nutrient concentration, initial pH and temperature were optimized. The results depict that coagulation alone rendered 78.5% COD reduction as well as 92.45% color reduction. A maximum of 65% of the remaining color could be removed by 10% (v/v) Aspergillus niger inoculums in effluent sample (product of coagulation) in batch mode under sterile condition. The observation can be similarly used in a distillery to improve the efficiency of aerobic treatment.