Dr Seher Ata
Honorary Senior Lecturer
School of Engineering
- Email:seher.ata@newcastle.edu.au
- Phone:(02) 4921 5881
Career Summary
Biography
Research Expertise
Recovery of hydrophobic particles in the froth phase Tracking of particles in the froth phase The formation of bubble clusters in flotation cells The behaviour of particles during coalescence of bubbles.
Qualifications
- PhD, University of Newcastle
- Bachelor in Mining Engineering, Hacettepe University - Ankara - Turkey
- Master in Mining Engineering, Hacettepe University - Ankara - Turkey
Keywords
- Bubble coalescence
- Bubble-particle interaction
- Chemical Engineering
- Flotation
- Froth phase behaviour
- Mineral processing,
- Particle technology
Languages
- Turkish (Fluent)
Professional Experience
Academic appointment
Dates | Title | Organisation / Department |
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1/2/2002 - | Academic Research | University of Newcastle School of Engineering Australia |
1/1/1990 - 1/1/1993 | Research Assistant | Hacettepe University Mining Engineering Department Turkey |
Publications
For publications that are currently unpublished or in-press, details are shown in italics.
Chapter (1 outputs)
Year | Citation | Altmetrics | Link | ||
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2007 |
Jameson GJ, Nguyen AV, Ata S, 'The flotation of fine and coarse particles', Froth Flotation: A Century of Innovation, Society for Mining, Metallurgy, and Exploration, Englewood, Colorado 339-372 (2007) [B1]
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Journal article (28 outputs)
Year | Citation | Altmetrics | Link | ||||||||
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2017 |
Bournival G, Ata S, Jameson GJ, 'Bubble and Froth Stabilizing Agents in Froth Flotation', Mineral Processing and Extractive Metallurgy Review, 38 366-387 (2017) [C1]
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2014 |
Morse AJ, Tan S-Y, Giakoumatos EC, Webber GB, Armes SP, Ata S, Wanless EJ, 'Arrested coalescence behaviour of giant Pickering droplets and colloidosomes stabilised by poly(tert-butylaminoethyl methacrylate) latexes.', Soft Matter, 10 5669-5681 (2014) [C1]
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2014 |
Bournival G, Du Z, Ata S, Jameson GJ, 'Foaming and gas dispersion properties of non-ionic frothers in the presence of hydrophobized submicron particles', INTERNATIONAL JOURNAL OF MINERAL PROCESSING, 133 123-131 (2014) [C1]
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2014 |
Bournival G, Ata S, Jameson GJ, 'The influence of submicron particles and salt on the recovery of coarse particles', Minerals Engineering, 69 146-153 (2014) [C1] Coarse particles are more difficult to float. One of the factors that contributes to poor floatability is the stability of froth. The froth formed in industrial flotation cells is... [more] Coarse particles are more difficult to float. One of the factors that contributes to poor floatability is the stability of froth. The froth formed in industrial flotation cells is typically not strong enough to provide adequate support for coarse and dense particles. The present study investigates how the presence of hydrophobic submicron particles at low concentration increases the recovery of relatively coarse particles through improvement in the froth stability. Silica particles with d80 of approximately 230 µm were floated in a laboratory mechanical flotation cell in a collector-free environment in the presence of poly(propylene glycol) 425 as a frothing agent. The hydrophobicity of the feed particles was modified through an esterification process with different alcohols ranging from 3 to 8 hydrocarbon groups to form a coating of intermediate hydrophobicity. Hydrophobised silica submicron particles of 300 nm in size were added to the flotation cell at 0.01 and 0.1 wt% concentration. The effect of electrolyte, sodium chloride, in the concentration range 10-5-10-1 M on the recovery of coarse particles was also investigated. For the feed employed, 1-butanol was found to provide relatively good flotation properties with a possibility for improvement by stabilising the froth phase. Both additives slightly stabilised the froth phase, which resulted in an increase in the maximum recovery of up to approximately 8%. It appeared that the additives had no significant effect on the first-order flotation rate constant.
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2014 |
Bournival G, Ata S, Karakashev SI, Jameson GJ, 'An investigation of bubble coalescence and post-rupture oscillation in non-ionic surfactant solutions using high-speed cinematography', JOURNAL OF COLLOID AND INTERFACE SCIENCE, 414 50-58 (2014) [C1]
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2014 |
Bournival G, Du Z, Ata S, Jameson GJ, 'Foaming and gas dispersion properties of non-ionic surfactants in the presence of an inorganic electrolyte', Chemical Engineering Science, 116 536-546 (2014) [C1] Foams represent an important area of research due to their relevance in many industrial processes. Where there are geographical constraints, which can limit access to fresh water,... [more] Foams represent an important area of research due to their relevance in many industrial processes. Where there are geographical constraints, which can limit access to fresh water, there is an economic incentive in using recycled water, bore water and even seawater for industrial purposes. This creates a growing interest in determining the effect of inorganic electrolytes on foaming and gas dispersion properties of non-ionic surfactant solutions. The present study compares the foaming and gas dispersion properties of the non-ionic surfactants 1-pentanol, tri(propylene glycol) methyl ether, and poly(propylene glycol) 425. For all surfactants, the stabilisation mechanism was influenced by the concentration of surfactant and the presence of salt with PPG being affected to a lesser extent. Sodium chloride was observed to have a detrimental effect on foaming at higher surfactant concentrations but improved foaming at low surfactant concentrations. At low surfactant concentrations, the addition of salt improved foaminess by dampening the hydrophobic force. An increase in gas holdup with increasing surfactant concentration was observed and was attributed to a decrease in bubble size. For poly(propylene glycol) an initial decrease in gas holdup was observed at very low concentrations. Salt mainly affected gas dispersion properties at a higher concentration. © 2014 Elsevier Ltd.
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2013 |
Ang ZJ, Bournival G, Ata S, 'Influence of frothers on the detachment of galena particles from bubbles', International Journal of Mineral Processing, 121 59-64 (2013) [C1]
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2013 |
Ata S, Jameson GJ, 'Recovery of coarse particles in the froth phase - A case study', MINERALS ENGINEERING, 45 121-127 (2013) [C3]
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2013 |
Tan S-Y, Ata S, Wanless EJ, 'Direct Observation of Individual Particle Armored Bubble Interaction, Stability, and Coalescence Dynamics', JOURNAL OF PHYSICAL CHEMISTRY B, 117 8579-8588 (2013) [C1]
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2012 |
Maxwell RK, Ata S, Wanless EJ, Moreno-Atanasio R, 'Computer simulations of particle-bubble interactions and particle sliding using Discrete Element Method', Journal of Colloid and Interface Science, 381 1-10 (2012) [C1]
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2012 |
Ata S, 'Phenomena in the froth phase of flotation - A review', International Journal of Mineral Processing, 102-103 1-12 (2012) [C1]
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2012 |
Rahman RM, Ata S, Jameson GJ, 'The effect of flotation variables on the recovery of different particle size fractions in the froth and the pulp', International Journal of Mineral Processing, 106 70-77 (2012) [C1]
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2012 |
Thompson KL, Giakoumatos EC, Ata S, Webber GB, Armes SP, Wanless EJ, 'Direct observation of giant pickering emulsion and colloidosome droplet interaction and stability', Langmuir, 28 16501-16511 (2012) [C1]
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2012 |
Bournival G, Pugh R, Ata S, 'Examination of NaCl and MIBC as bubble coalescence inhibitor in relation to froth flotation', Minerals Engineering, 25 47-53 (2012) [C1]
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2011 |
Ata S, 'The role of frother on the detachment of particles from bubbles', Minerals Engineering, 24 476-478 (2011) [C1]
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2011 |
Ata S, Pugh RJ, Jameson GJ, 'The influence of interfacial ageing and temperature on the coalescence of oil droplets in water', Colloids and Surfaces A: Physicochemical and Engineering Aspects, 374 96-101 (2011) [C1]
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2010 |
Ata S, Davis ES, Dupin D, Armes SP, Wanless EJ, 'Direct observation of pH-induced coalescence of latex-stabilized bubbles using high-speed video imaging', Langmuir, 26 7865-7874 (2010) [C1]
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2010 |
Bournival G, Ata S, 'Packing of particles on the surface of bubbles', Minerals Engineering, 23 111-116 (2010) [C1]
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2009 |
Ata S, 'The detachment of particles from coalescing bubble pairs', Journal of Colloid and Interface Science, 338 558-565 (2009) [C1]
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2009 |
Stevenson P, Ata S, Evans GM, 'The behavior of an oscillating particle attached to a gas-liquid surface', Industrial & Engineering Chemistry Research, 48 8024-8029 (2009) [C1]
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2008 |
Ata S, 'Coalescence of bubbles covered by particles', Langmuir, 24 6085-6091 (2008) [C1]
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2007 |
Stevenson P, Ata S, Evans GM, 'Convective-dispersive gangue transport in flotation froth', Chemical Engineering Science, 62 5736-5744 (2007) [C1]
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2006 |
Ata S, Pigram SM, Jameson GJ, 'Tracking of particles in the froth phase: An experimental technique', Minerals Engineering, 19 824-830 (2006) [C1]
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2006 |
Ata S, Yates PD, 'Stability and flotation behaviour of silica in the presence of a non-polar oil and cationic surfactant', Colloids and Surfaces A -Physicochemical and Engineering Aspects, 277 1-7 (2006) [C1]
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2005 |
Ata S, Jameson GJ, 'The formation of bubble clusters in flotation cells', International Journal of Mineral Processing, 76 123-139 (2005) [C1]
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2004 |
Ata S, Ahmed N, Jameson GJ, 'The effect of hydrophobicity on the drainage of gangue minerals in flotation froths', Minerals Engineering, 17 897-901 (2004) [C1]
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2003 |
Ata S, Ahmed N, Jameson GJ, 'A Study of bubble Coalescence in Flotation Froths', International Journal of Mineral Processing, 72 255-266 (2003) [C1]
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2002 |
Ata S, Ahmed N, Jameson GJ, 'Collection of hydrophobic particles in the froth phase', International Journal of Mineral Processing, 64 101-122 (2002) [C1]
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Show 25 more journal articles |
Conference (16 outputs)
Year | Citation | Altmetrics | Link | ||||||||
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2014 |
Wanless EJ, Smith J, Bournival G, Tan SY, Webber GB, Ata S, 'High speed video observations of alumina-coated air bubble coalescence', Chemeca 2014: Processing excellence; Powering our future, Perth (2014) [E1]
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2014 |
Morse AJ, Tan S-Y, Giakoumatos EC, Webber GB, Armes SP, Ata S, Wanless EJ, 'Coalescence behavior of giant Pickering droplets and colloidosomes stabilized by poly(tert-butylaminoethyl methacrylate) latexes', ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, San Francisco, CA (2014) [E3]
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2012 |
Maxwell RK, Ata S, Wanless EJ, Moreno-Atanasio R, 'Computer simulations of particle-bubble interactions using Discrete Element Method', Chemeca 2012 : Quality of Life Through Chemical Engineering, Wellington, NZ (2012) [E1]
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2012 |
Rahman RM, Ata S, Jameson GJ, 'Froth recovery measurements in an industrial flotation cell', 26th International Mineral Processing Congress, IMPC 2012: Innovative Processing for Sustainable Growth - Conference Proceedings, New Delhi, India (2012) [E1]
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2010 |
Chen Z, Ata S, Jameson GJ, 'Behaviour of bubble clusters in a turbulent flow', XXV International Mineral Processing Congress IMPC 2010,, Brisbane (2010) [E1]
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2010 |
Rahman R, Ata S, Jameson GJ, 'Development of a froth dropback measurement device', XXV International Mineral Processing Congress IMPC 2010,, Brisbane (2010) [E1]
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2009 | Pugh RJ, Ata S, 'Coalescence of bubbles and foaming in chemical surfactant free aqueous dispersions of mineral particles', 13th IACIS International Conference on Surface and Colloid Science and the 83rd ACS Colloid & Surface Science Symposium: Technical Program, New York, USA (2009) [E3] | ||||||||||
2008 |
Ata S, Pugh RJ, Jameson GJ, 'The influence of coverage of particles on the coalescence of bubbles', 17th International Symposium on Surfactants in Solution. Abstracts, Berlin, Germany (2008) [E3]
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2008 |
Ata S, Jameson GJ, 'Coalescence of bubble pairs in surfactant solutions', Proceedings of XXIV International Mineral Processing Congress, Beijing, China (2008) [E1]
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2006 |
Ata S, Jameson GJ, 'Flotation of Dispersed Silica Particles', Proceedings of XXIII International Mineral Processing Congress, Istanbul, Turkey (2006) [E1]
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2005 |
Ata S, Agarwal A, Jameson GJ, 'The Formation of Bubble Clusters in Flotation Cells - Effect of Impeller Speed', Centenary of Flotation Symposium, Brisbane (2005) [E1]
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2005 |
Ata S, Pigram SM, Jameson GJ, 'Tracking of Particles in the Froth Phase - An Experimental Technique', Centenary of Flotation Symposium, Brisbane (2005) [E1]
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2003 |
Ata S, Ahmed N, Jameson GJ, 'Gangue Drainage in Flotation Froths', XXII International Mineral Processing Congress, Cape Town, South Africa (2003) [E1]
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1999 | Ata S, Ahmed N, 'The effect of hydrophobicity on the froth phase behaviour', 27th Australasian Chemical Engineering Conference, Newcastle (1999) [E1] | ||||||||||
1998 | Ata S, Ahmed N, 'Particle Shape Effects on Entrainment in Flotation', Proceedings of the 26th Australasian Chemical Engineering Conference, Port Douglas, Australia (1998) [E1] | ||||||||||
1998 | Ata S, Ahmed N, 'The Effect of Hydrophobic Particles on the Entrainment of Hydrophilic Particles', Proceedings of the 7th International Mineral Processing Symposium, Istanbul, Turkey (1998) [E2] | ||||||||||
Show 13 more conferences |
Grants and Funding
Summary
Number of grants | 11 |
---|---|
Total funding | $1,591,637 |
Click on a grant title below to expand the full details for that specific grant.
20122 grants / $330,000
Particle-Stabilised Bubble and Droplet Interfaces$315,000
Funding body: ARC (Australian Research Council)
Funding body | ARC (Australian Research Council) |
---|---|
Project Team | Professor Erica Wanless, Doctor Seher Ata |
Scheme | Discovery Projects |
Role | Investigator |
Funding Start | 2012 |
Funding Finish | 2014 |
GNo | G1100202 |
Type Of Funding | Aust Competitive - Commonwealth |
Category | 1CS |
UON | Y |
2011 Emerging Research Leaders Program$15,000
Funding body: University of Newcastle
Funding body | University of Newcastle |
---|---|
Project Team | Doctor Seher Ata |
Scheme | Emerging Research Leaders Program |
Role | Lead |
Funding Start | 2012 |
Funding Finish | 2012 |
GNo | G1200512 |
Type Of Funding | Internal |
Category | INTE |
UON | Y |
20111 grants / $25,000
Improving the recovery of coarse particles in flotation$25,000
Funding body: University of Newcastle
Funding body | University of Newcastle |
---|---|
Project Team | Emeritus Professor Graeme Jameson, Doctor Seher Ata |
Scheme | Near Miss Grant |
Role | Investigator |
Funding Start | 2011 |
Funding Finish | 2011 |
GNo | G1001040 |
Type Of Funding | Internal |
Category | INTE |
UON | Y |
20101 grants / $17,000
The influence of frother types on sulphide minerals flotation $17,000
Funding body: University of Newcastle - Faculty of Engineering & Built Environment
Funding body | University of Newcastle - Faculty of Engineering & Built Environment |
---|---|
Project Team | Doctor Seher Ata |
Scheme | Pilot Grant |
Role | Lead |
Funding Start | 2010 |
Funding Finish | 2010 |
GNo | G0900064 |
Type Of Funding | Internal |
Category | INTE |
UON | Y |
20081 grants / $1,700
XXIV International Mineral Processing Congress, Beijing, China, 24/9/2008 - 28/9/2008$1,700
Funding body: University of Newcastle
Funding body | University of Newcastle |
---|---|
Project Team | Doctor Seher Ata |
Scheme | Travel Grant |
Role | Lead |
Funding Start | 2008 |
Funding Finish | 2008 |
GNo | G0189318 |
Type Of Funding | Internal |
Category | INTE |
UON | Y |
20072 grants / $9,700
Investigation of bubble clusters in froth flotation$8,000
Funding body: NEWCASTLE UNIVERSITY
Funding body | NEWCASTLE UNIVERSITY |
---|---|
Scheme | INDEPENDENT INVESTIGATOR GRANT |
Role | Lead |
Funding Start | 2007 |
Funding Finish | 2007 |
GNo | |
Type Of Funding | Internal |
Category | INTE |
UON | N |
Flotation 07, Cape Town, South Africa, 6/11/2007 - 9/11/2007$1,700
Funding body: University of Newcastle
Funding body | University of Newcastle |
---|---|
Project Team | Doctor Seher Ata |
Scheme | Travel Grant |
Role | Lead |
Funding Start | 2007 |
Funding Finish | 2007 |
GNo | G0188070 |
Type Of Funding | Internal |
Category | INTE |
UON | Y |
20063 grants / $958,509
Extending the range of the flotation process for particle separation$950,000
Funding body: ARC (Australian Research Council)
Funding body | ARC (Australian Research Council) |
---|---|
Project Team | Emeritus Professor Graeme Jameson, Doctor Seher Ata |
Scheme | Discovery Projects |
Role | Investigator |
Funding Start | 2006 |
Funding Finish | 2010 |
GNo | G0185241 |
Type Of Funding | Aust Competitive - Commonwealth |
Category | 1CS |
UON | Y |
Behaviour of particles during coalescence of bubbles$5,909
Funding body: NEWCASTLE UNIVERSITY
Funding body | NEWCASTLE UNIVERSITY |
---|---|
Project Team | DR SEHER ATA |
Scheme | INDEPENDENT INVESTIGATOR GRANT |
Role | Lead |
Funding Start | 2006 |
Funding Finish | 2006 |
GNo | |
Type Of Funding | Internal |
Category | INTE |
UON | N |
Floatation of Dispersed Fine Silica Particles$2,600
Funding body: Ian Potter Foundation
Funding body | Ian Potter Foundation |
---|---|
Project Team | Doctor Seher Ata |
Scheme | Travel Grant |
Role | Lead |
Funding Start | 2006 |
Funding Finish | 2006 |
GNo | G0186580 |
Type Of Funding | Donation - Aust Non Government |
Category | 3AFD |
UON | Y |
20051 grants / $249,728
Mineral Flotation - Integrating Science and Practice$249,728
Funding body: ARC (Australian Research Council)
Funding body | ARC (Australian Research Council) |
---|---|
Project Team | Emeritus Professor Graeme Jameson, Doctor Seher Ata |
Scheme | Linkage Projects |
Role | Investigator |
Funding Start | 2005 |
Funding Finish | 2007 |
GNo | G0185579 |
Type Of Funding | Aust Competitive - Commonwealth |
Category | 1CS |
UON | Y |
Research Supervision
Number of supervisions
Past Supervision
Year | Level of Study | Research Title | Program | Supervisor Type |
---|---|---|---|---|
2015 | PhD | Stabilisation of Bubbles and Froths with Colloidal Particles and Inorganic Electrolytes | PhD (Chemical Engineering), College of Engineering, Science and Environment, The University of Newcastle | Principal Supervisor |
2014 | PhD | Behaviour of Bubble Clusters in a Turbulent Flotation Cell | PhD (Chemical Engineering), College of Engineering, Science and Environment, The University of Newcastle | Co-Supervisor |
2014 | PhD | Studies of Froth Recovery in Flotation | PhD (Chemical Engineering), College of Engineering, Science and Environment, The University of Newcastle | Co-Supervisor |
2013 | PhD | Detachment of Particles From Bubbles in a Turbulent Motion | PhD (Chemical Engineering), College of Engineering, Science and Environment, The University of Newcastle | Co-Supervisor |
2013 | PhD | The Attachment of Bubbles to Composite Particles | PhD (Chemical Engineering), College of Engineering, Science and Environment, The University of Newcastle | Co-Supervisor |
Dr Seher Ata
Position
Honorary Senior Lecturer
Centre for Multiphase Processes
School of Engineering
College of Engineering, Science and Environment
Contact Details
seher.ata@newcastle.edu.au | |
Phone | (02) 4921 5881 |
Fax | (02) 4960 1445 |
Office
Room | EB120 |
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Building | Engineering B |
Location | Callaghan University Drive Callaghan, NSW 2308 Australia |