Pollution Research Paper

Vol 38, Issue 1, 2019; Page No.(244-250)

APPLICATION OF ACINETOBACTER SP. IRC2 FOR REMOVING HEAVY METALS FROM TEXTILE INDUSTRIAL SEWAGE USING A FIXED BED BIOREACTOR

WAHYU IRAWATI, ADOLF JAN NEXSON PARHUSIP, NIDA SOPIAH, SUSI SULISTIA, SEMUEL RIAK1 AND TRIWIBOWO YUWONO

Abstract

Environmental pollution caused by toxic heavy metals from textile effluent has become a very important issue in recent years. Heavy metals released from textile industrial sewage is a very important issue in Indonesia because it they could not be degraded thus they still remain in environment. Biological method using bacteria has been commonly used for removing heavy metals because of its low cost and high efficiency. The purpose of this research was to study the role of Acinetobacter sp. IrC2 in bioreactor application to remove copper and zinc from textile industrial sewage. Bioreactor was filled by textile industrial sewage and was inoculated with Acinetobacter sp. IrC2. The study used three kinds of energy sources for growing the bacterium: (1) molassess and Carbon/Nitrogen/Phospor, (2) molassess and urea, as well as (3) without energy sources. Percentage of heavy metals removing was determined by using Atomic Absorption Spectrophotometer. The result showed that the best treatment for Cu and zinc removal achieved when the bioreactor supplemented with the mixture of molasses and ureaas well as the mixture of molasses and C/N/P.The bioreactor without the bacteria did not show a decrease in the concentration of zinc. The highest percentage of copper and zinc removal is 62% and 32%, respectively. The study shows that Acinetobacter is a potential bacterium to remove heavy metal using bioreactor.

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