Abstract
Hydrophilic property of Ferroplasma acidiphilum strain was investigated through direct contact angle measurements, interaction with hydrocarbons and with the determination of its surface energy components. The contact angles of three different liquids drops (water, chloroform, and 1-bromonaphthalene) positioned on the bacterial lawn were measured. Hamaker constant, electron donor and electron acceptor parameters were calculated. The results of contact angles and those of the interaction with organic solvents showed that the microbe has hydrophilic property. The value of interaction energy, ΔG bwb, between two microbial cells (b) immersed in water (w) was found to be +29.53 mJ/m 2 confirming the hydrophilic nature of the microbial cells. The floatability of pyrite under xanthate conditions with and without the microbial cells was examined. The results showed that, when the mineral sample was treated with the microbial cells, the cells rendered their own hydrophilic nature to the mineral surface and the floatability of the mineral decreased dramatically over all pH regions.
| Original language | English |
|---|---|
| Pages (from-to) | 242-247 |
| Number of pages | 6 |
| Journal | Minerals Engineering |
| Volume | 36-38 |
| DOIs | |
| Publication status | Published - Oct 1 2012 |
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All Science Journal Classification (ASJC) codes
- Control and Systems Engineering
- Chemistry(all)
- Geotechnical Engineering and Engineering Geology
- Mechanical Engineering
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Hydrophilicity of Ferroplasma acidiphilum and its effect on the depression of pyrite. / Farahat, Mohsen; Hirajima, Tsuyoshi.
In: Minerals Engineering, Vol. 36-38, 01.10.2012, p. 242-247.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Hydrophilicity of Ferroplasma acidiphilum and its effect on the depression of pyrite
AU - Farahat, Mohsen
AU - Hirajima, Tsuyoshi
PY - 2012/10/1
Y1 - 2012/10/1
N2 - Hydrophilic property of Ferroplasma acidiphilum strain was investigated through direct contact angle measurements, interaction with hydrocarbons and with the determination of its surface energy components. The contact angles of three different liquids drops (water, chloroform, and 1-bromonaphthalene) positioned on the bacterial lawn were measured. Hamaker constant, electron donor and electron acceptor parameters were calculated. The results of contact angles and those of the interaction with organic solvents showed that the microbe has hydrophilic property. The value of interaction energy, ΔG bwb, between two microbial cells (b) immersed in water (w) was found to be +29.53 mJ/m 2 confirming the hydrophilic nature of the microbial cells. The floatability of pyrite under xanthate conditions with and without the microbial cells was examined. The results showed that, when the mineral sample was treated with the microbial cells, the cells rendered their own hydrophilic nature to the mineral surface and the floatability of the mineral decreased dramatically over all pH regions.
AB - Hydrophilic property of Ferroplasma acidiphilum strain was investigated through direct contact angle measurements, interaction with hydrocarbons and with the determination of its surface energy components. The contact angles of three different liquids drops (water, chloroform, and 1-bromonaphthalene) positioned on the bacterial lawn were measured. Hamaker constant, electron donor and electron acceptor parameters were calculated. The results of contact angles and those of the interaction with organic solvents showed that the microbe has hydrophilic property. The value of interaction energy, ΔG bwb, between two microbial cells (b) immersed in water (w) was found to be +29.53 mJ/m 2 confirming the hydrophilic nature of the microbial cells. The floatability of pyrite under xanthate conditions with and without the microbial cells was examined. The results showed that, when the mineral sample was treated with the microbial cells, the cells rendered their own hydrophilic nature to the mineral surface and the floatability of the mineral decreased dramatically over all pH regions.
UR - http://www.scopus.com/inward/record.url?scp=84867695124&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84867695124&partnerID=8YFLogxK
U2 - 10.1016/j.mineng.2012.04.002
DO - 10.1016/j.mineng.2012.04.002
M3 - Article
VL - 36-38
SP - 242
EP - 247
JO - Minerals Engineering
JF - Minerals Engineering
SN - 0892-6875
ER -