Bioflocculant producing-bacteria from tapioca waste water were characterized. Two bacterial isolates i.e. LT-5 and LT-6 isolates had high flocculation activity, with activity of 68.92 and 71.38% respectively. The flocculation activity of LT-5 isolate increased at pH 2.0-4.0 (acidic condition), however the activity of LT-6 increased at pH 6.0-8.0 (neutral). Addition of 0.05% of AlCl3 as cation was the most effective and had important role in flocculation activity. Based on the morphological properties, LT-5 isolate was identified as Chromobacterium violaceum and LT-6 isolate was identified as Citrobacter koseri.

. SURYANI; LAKSMI AMBARSARI; I MADE ARTIKA; HARTUTIK EKA SUSANTI

doi:10.4308/hjb.18.4.193

Bioflocculant producing-bacteria from tapioca waste water were characterized. Two bacterial isolates i.e. LT-5 and LT-6 isolates had high flocculation activity, with activity of 68.92 and 71.38% respectively. The flocculation activity of LT-5 isolate increased at pH 2.0-4.0 (acidic condition), however the activity of LT-6 increased at pH 6.0-8.0 (neutral). Addition of 0.05% of AlCl3 as cation was the most effective and had important role in flocculation activity. Based on the morphological properties, LT-5 isolate was identified as Chromobacterium violaceum and LT-6 isolate was identified as Citrobacter koseri.

. SURYANI Department of Biochemistry, Faculty of Mathematics and Natural Sciences, Bogor agricultural University
LAKSMI AMBARSARI Department of Biochemistry, Faculty of Mathematics and Natural Sciences, Bogor agricultural University
I MADE ARTIKA Department of Biochemistry, Faculty of Mathematics and Natural Sciences, Bogor agricultural University
HARTUTIK EKA SUSANTI Department of Biochemistry, Faculty of Mathematics and Natural Sciences, Bogor agricultural University

DOI: https://doi.org/10.4308/hjb.18.4.193

Keywords: Bioflocculant producing-bacteria from tapioca waste water were characterized. Two bacterial isolates i.e. LT-5 and LT-6 isolates had high flocculation activity, with activity of 68.92 and 71.38% respectively. The flocculation activity of LT-5 isolate increased at pH 2.0-4.0 (acidic condition), however the activity of LT-6 increased at pH 6.0-8.0 (neutral). Addition of 0.05% of AlCl3 as cation was the most effective and had important role in flocculation activity. Based on the morphological properties, LT-5 isolate was identified as Chromobacterium violaceum and LT-6 isolate was identified as Citrobacter koseri.

Abstract

Bioflocculant producing-bacteria from tapioca waste water were characterized. Two bacterial isolates i.e. LT-5 and LT-6 isolates had high flocculation activity, with activity of 68.92 and 71.38% respectively. The flocculation activity of LT-5 isolate increased at pH 2.0-4.0 (acidic condition), however the activity of LT-6 increased at pH 6.0-8.0 (neutral). Addition of 0.05% of AlCl3 as cation was the most effective and had important role in flocculation activity. Based on the morphological properties, LT-5 isolate was identified as Chromobacterium violaceum and LT-6 isolate was identified as Citrobacter koseri.

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Published

2012-01-25

How to Cite

SURYANI., AMBARSARIL., ARTIKAI. M., & SUSANTIH. E. (2012). Bioflocculant producing-bacteria from tapioca waste water were characterized. Two bacterial isolates i.e. LT-5 and LT-6 isolates had high flocculation activity, with activity of 68.92 and 71.38% respectively. The flocculation activity of LT-5 isolate increased at pH 2.0-4.0 (acidic condition), however the activity of LT-6 increased at pH 6.0-8.0 (neutral). Addition of 0.05% of AlCl3 as cation was the most effective and had important role in flocculation activity. Based on the morphological properties, LT-5 isolate was identified as Chromobacterium violaceum and LT-6 isolate was identified as Citrobacter koseri.. HAYATI Journal of Biosciences, 18(4), 193. https://doi.org/10.4308/hjb.18.4.193

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Issue

Vol. 18 No. 4 (2011): December 2011

Section

Short Communication

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