Biological separation of quartz from kaolinite using Bacillus licheniformis

Mohammad Raouf Hosseini; Seyed Mohammad Sadeghieh; Mohammad Reza Azizinia; Seyed Hassan Tabatabaei

doi:10.1080/01496395.2019.1617738

Biological separation of quartz from kaolinite using Bacillus licheniformis

Mohammad Raouf Hosseini, Seyed Mohammad Sadeghieh, Mohammad Reza Azizinia, Seyed Hassan Tabatabaei

Isfahan University of Technology

Research output: Contribution to journal › Article › peer-review

7 Citations (Scopus)

Abstract

Separation of quartz and kaolinite was examined in the absence and presence of the cells and extracellular polymeric substances (EPS) of Bacillus licheniformis in alkaline conditions. The adsorption density of EPS and bacterial cells on kaolinite increased by raising the pH value from 9 to 12, whereas for quartz the trend was in reverse. The highest difference between the settling rates of two minerals happened at pH = 12, 11, and 10 using no bio-reagents, bacterial cells, and EPS, respectively. The mineral separation tests indicated that using the bacterial cells, 98.3% of kaolinite was recovered, and quartz content was reduced by 8%.

Original language	English
Pages (from-to)	2061-2071
Number of pages	11
Journal	Separation Science and Technology (Philadelphia)
Volume	55
Issue number	11
Early online date	17 May 2019
DOIs	https://doi.org/10.1080/01496395.2019.1617738
Publication status	Published - 23 Jul 2020
Externally published	Yes

Keywords

Bacillus licheniformis
bioflocculation
kaolin
polysaccharide
quartz

ASJC Scopus subject areas

Chemistry(all)
Chemical Engineering(all)
Process Chemistry and Technology
Filtration and Separation

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10.1080/01496395.2019.1617738

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abstract = "Separation of quartz and kaolinite was examined in the absence and presence of the cells and extracellular polymeric substances (EPS) of Bacillus licheniformis in alkaline conditions. The adsorption density of EPS and bacterial cells on kaolinite increased by raising the pH value from 9 to 12, whereas for quartz the trend was in reverse. The highest difference between the settling rates of two minerals happened at pH = 12, 11, and 10 using no bio-reagents, bacterial cells, and EPS, respectively. The mineral separation tests indicated that using the bacterial cells, 98.3% of kaolinite was recovered, and quartz content was reduced by 8%.",

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T1 - Biological separation of quartz from kaolinite using Bacillus licheniformis

AU - Hosseini, Mohammad Raouf

AU - Sadeghieh, Seyed Mohammad

AU - Azizinia, Mohammad Reza

AU - Tabatabaei, Seyed Hassan

PY - 2020/7/23

Y1 - 2020/7/23

N2 - Separation of quartz and kaolinite was examined in the absence and presence of the cells and extracellular polymeric substances (EPS) of Bacillus licheniformis in alkaline conditions. The adsorption density of EPS and bacterial cells on kaolinite increased by raising the pH value from 9 to 12, whereas for quartz the trend was in reverse. The highest difference between the settling rates of two minerals happened at pH = 12, 11, and 10 using no bio-reagents, bacterial cells, and EPS, respectively. The mineral separation tests indicated that using the bacterial cells, 98.3% of kaolinite was recovered, and quartz content was reduced by 8%.

AB - Separation of quartz and kaolinite was examined in the absence and presence of the cells and extracellular polymeric substances (EPS) of Bacillus licheniformis in alkaline conditions. The adsorption density of EPS and bacterial cells on kaolinite increased by raising the pH value from 9 to 12, whereas for quartz the trend was in reverse. The highest difference between the settling rates of two minerals happened at pH = 12, 11, and 10 using no bio-reagents, bacterial cells, and EPS, respectively. The mineral separation tests indicated that using the bacterial cells, 98.3% of kaolinite was recovered, and quartz content was reduced by 8%.

KW - Bacillus licheniformis

KW - bioflocculation

KW - kaolin

KW - polysaccharide

KW - quartz

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Biological separation of quartz from kaolinite using Bacillus licheniformis

Abstract

Keywords

ASJC Scopus subject areas

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