Cation Dependence, pH Tolerance, and Dosage Requirement of a Bioflocculant Produced by Bacillus spp. UPMB13 : Flocculation Performance Optimization through Kaolin Assays
Joint Authors
Yusoff, Mohd Kamil
Zulkeflee, Zufarzaana
Aris, Ahmad Zaharin
Shamsuddin, Zulkifli H.
Source
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-7, 7 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-09-10
Country of Publication
Egypt
No. of Pages
7
Main Subjects
Natural & Life Sciences (Multidisciplinary)
Medicine
Information Technology and Computer Science
Abstract EN
A bioflocculant-producing bacterial strain with highly mucoid and ropy colony morphological characteristics identified as Bacillus spp.
UPMB13 was found to be a potential bioflocculant-producing bacterium.
The effect of cation dependency, pH tolerance and dosage requirement on flocculating ability of the strain was determined by flocculation assay with kaolin as the suspended particle.
The flocculating activity was measured as optical density and by flocs formation.
A synergistic effect was observed with the addition of monovalent and divalent cations, namely, Na+, Ca2+, and Mg2+, while Fe2+ and Al3+ produced inhibiting effects on flocculating activity.
Divalent cations were conclusively demonstrated as the best cation source to enhance flocculation.
The bioflocculant works in a wide pH range, from 4.0 to 8.0 with significantly different performances (P<0.05), respectively.
It best performs at pH 5.0 and pH 6.0 with flocculating performance of above 90%.
A much lower or higher pH would inhibit flocculation.
Low dosage requirements were needed for both the cation and bioflocculant, with only an input of 50 mL/L for 0.1% (w/v) CaCl2 and 5 mL/L for culture broth, respectively.
These results are comparable to other bioflocculants produced by various microorganisms with higher dosage requirements.
American Psychological Association (APA)
Zulkeflee, Zufarzaana& Aris, Ahmad Zaharin& Shamsuddin, Zulkifli H.& Yusoff, Mohd Kamil. 2012. Cation Dependence, pH Tolerance, and Dosage Requirement of a Bioflocculant Produced by Bacillus spp. UPMB13 : Flocculation Performance Optimization through Kaolin Assays. The Scientific World Journal،Vol. 2012, no. 2012, pp.1-7.
https://search.emarefa.net/detail/BIM-476236
Modern Language Association (MLA)
Zulkeflee, Zufarzaana…[et al.]. Cation Dependence, pH Tolerance, and Dosage Requirement of a Bioflocculant Produced by Bacillus spp. UPMB13 : Flocculation Performance Optimization through Kaolin Assays. The Scientific World Journal No. 2012 (2012), pp.1-7.
https://search.emarefa.net/detail/BIM-476236
American Medical Association (AMA)
Zulkeflee, Zufarzaana& Aris, Ahmad Zaharin& Shamsuddin, Zulkifli H.& Yusoff, Mohd Kamil. Cation Dependence, pH Tolerance, and Dosage Requirement of a Bioflocculant Produced by Bacillus spp. UPMB13 : Flocculation Performance Optimization through Kaolin Assays. The Scientific World Journal. 2012. Vol. 2012, no. 2012, pp.1-7.
https://search.emarefa.net/detail/BIM-476236
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-476236