Journal Title : International Journal of Modern Trends in Engineering and Science
Paper Title : OPTIMIZATION OF BIOLOGICAL WITH OZONE TREATMENT FOR THE REDUCTION OF STARCH CONCENTRATION FROM SAGO INDUSTRIAL EFFLUENT
Volume 03 Issue 07 2016
ISSN no: 2348-3121
Page no: 225-229
Abstract – The process of starch extraction from sago pith requires large quantities of water, thus huge amount of waste water was released from sago mills. The bulk of the sago waste water is liquid (94-97%), whereas the solid waste called ‘hamper’ will render numerous problems in the Treatment. Approximately 7 tons of sago pith waste was produced daily from a single sago starch processing mill. Currently, these residues were washed off into nearby streams together with waste water and deposited in the factory’s compound, which can lead to serious environmental problems. The problems of pollution from sago starch processing are more social and economic in nature than technological. The present study provides important baseline information for the use of microorganisms for the degradation of sago mill effluent especially starch content and also used ozone treatment for further treatment. The study has resulted in the isolation of five very efficient bacterial strains possessing high starch-utilizing efficiency, suggesting a potential role for exploitation of these isolates in bio-remediation of such effluents. All isolates were screened for degradation of starch, among five bacterial isolates one isolate showed maximum reduction ability, it was selected for further study like medium optimization for starch degradation using biological method. The best degradation of starch was observed at pH 7, bacterial inoculums concentration (1.0%), 0.1% peptone, 0.6% sucrose, 0.6% lactose, 0.3% dextrose, 0.1% yeast and 0.1% ammonium sulphate. This study suggested that biological with ozone treatment process could be effectively degraded starch material as well as COD reduction.
Keywords— Sago effluent; Starch degradation; ozone treatment; COD reduction
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