Staff Profile

Edit

Career Summary

Biography

Dr Seher Ata has been involved in all physical aspects of flotation both pulp and froth phase. Her PhD study was concerned with many complex mechanisms between the various phenomena occurring in the froth of a flotation system. Using artificially hydrophobised particles in the experimental work made a significant contribution to the understanding the froth phase behaviour and relevant mechanisms operating in the froth phase. In particular, it was shown that the collection of hydrophobic particles in the froth phase is possible and that there may be practical cases where it could be beneficial to feed particles into the froth rather than into the pulp, as is traditionally the case, particularly for the treatment of particles having difficulty in transferring from the pulp into the froth phase, such as large or weakly hydrophobic particles. As a result of this outcome, the recovery of coarse particles in the froth phase has been extended to industrial mineral flotation plants through a Linkage project where she is Chief investigator. She has been a research academic in the Centre for Multiphase Processes since 2002 and has been working on a number of projects including ultra-fine particle flotation, capture rate of hydrophobic particles in the froth phase, measurement of bubble sizes in industrial flotation cells and cluster formation in flotation cells. A remarkable discovery has been made during investigating the phenomena of cluster formation. It was found that bubbles in flotation cells form clusters and the size of them increases systematically with increases in the particle hydrophobicity. The cluster formation has not appeared in the literature before and its consequences in the flotation process are not known. Bubble clusters may be beneficial for the recovery of coarse particles which are poorly recovered by the existence flotation technologies. An experimental program has been taking to investigate the phenomena through an ARC Discovery grants where she is Chief Investigator. Dr Ata is chief investigator on two ARC projects (one ARC Linkage and one ARC DP) and two Independent Investigator Research Grants, a competitive external funding from the University of Newcastle.

Qualifications

  • PhD, University of Newcastle, 22/02/2002
  • Bachelor in Mining Engineering, Hacettepe University - Ankara - Turkey
  • Master in Mining Engineering, Hacettepe University - Ankara - Turkey, 09/09/1993

Research

Research keywords

  • Bubble coalescence
  • Bubble-particle interaction
  • Chemical Engineering
  • Flotation
  • Froth phase behaviour

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

Languages

  • Turkish

Fields of Research

CodeDescriptionPercentage
090499Chemical Engineering Not Elsewhere Classified45
091499Resources Engineering And Extractive Metallurgy Not Elsewhere Classified40
030699Physical Chemistry Not Elsewhere Classified15

Teaching

Teaching keywords

  • Mineral processing,
  • Particle technology
Edit

Highlighted Publications

For publications that are currently unpublished or in-press, details are shown in italics.

YearCitationAltmetricsLink
2005Ata S, Jameson GJ, 'The formation of bubble clusters in flotation cells', International Journal of Mineral Processing, 76 123-139 (2005) [C1]

Co-authors: Graeme Jameson

2002Ata S, Ahmed N, Jameson GJ, 'Collection of hydrophobic particles in the froth phase', International Journal of Mineral Processing, 64 101-122 (2002) [C1]

Co-authors: Graeme Jameson

2006Ata 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]
2003Ata S, Ahmed N, Jameson GJ, 'A Study of bubble Coalescence in Flotation Froths', International Journal of Mineral Processing, 72 255-266 (2003) [C1]

Publications

For publications that are currently unpublished or in-press, details are shown in italics.

Click on a category title below to expand the list of citations for that specific category.

Chapter (1 outputs)

YearCitationAltmetricsLink
2007Jameson 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]

Co-authors: Graeme Jameson

Journal article (24 outputs)

YearCitationAltmetricsLink
2014Bournival 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]
2013Tan 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]
2013Ang 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]
2013Rahman RM, Ata S, Jameson GJ, 'Froth recovery measurements in an industrial flotation cell', Minerals Engineering, 53 193-202 (2013) [C1]
2013Ata S, Jameson GJ, 'Recovery of coarse particles in the froth phase - A case study', MINERALS ENGINEERING, 45 121-127 (2013) [C3]
2012Thompson 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]
2012Maxwell 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]
2012Ata S, 'Phenomena in the froth phase of flotation - A review', International Journal of Mineral Processing, 102-103 1-12 (2012) [C1]
2012Bournival 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]
2012Rahman 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]

Co-authors: Graeme Jameson

2011Ata S, 'The role of frother on the detachment of particles from bubbles', Minerals Engineering, 24 476-478 (2011) [C1]
2011Ata 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]
2010Bournival G, Ata S, 'Packing of particles on the surface of bubbles', Minerals Engineering, 23 111-116 (2010) [C1]
2010Ata 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]
2009Stevenson 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]
2009Ata S, 'The detachment of particles from coalescing bubble pairs', Journal of Colloid and Interface Science, 338 558-565 (2009) [C1]
2008Ata S, 'Coalescence of bubbles covered by particles', Langmuir, 24 6085-6091 (2008) [C1]
2007Stevenson P, Ata S, Evans GM, 'Convective-dispersive gangue transport in flotation froth', Chemical Engineering Science, 62 5736-5744 (2007) [C1]
2006Ata 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]
2006Ata S, Pigram SM, Jameson GJ, 'Tracking of particles in the froth phase: An experimental technique', Minerals Engineering, 19 824-830 (2006) [C1]
2005Ata S, Jameson GJ, 'The formation of bubble clusters in flotation cells', International Journal of Mineral Processing, 76 123-139 (2005) [C1]

Co-authors: Graeme Jameson

2004Ata 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]
2003Ata S, Ahmed N, Jameson GJ, 'A Study of bubble Coalescence in Flotation Froths', International Journal of Mineral Processing, 72 255-266 (2003) [C1]
2002Ata S, Ahmed N, Jameson GJ, 'Collection of hydrophobic particles in the froth phase', International Journal of Mineral Processing, 64 101-122 (2002) [C1]

Co-authors: Graeme Jameson

Show 21 more

Conference (13 outputs)

YearCitationAltmetricsLink
2012Maxwell 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]
2010Rahman R, Ata S, Jameson GJ, 'Development of a froth dropback measurement device', XXV International Mineral Processing Congress IMPC 2010,, Brisbane (2010) [E1]

Co-authors: Graeme Jameson

2010Chen Z, Ata S, Jameson GJ, 'Behaviour of bubble clusters in a turbulent flow', XXV International Mineral Processing Congress IMPC 2010,, Brisbane (2010) [E1]

Co-authors: Graeme Jameson

2009Pugh 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]
2008Ata S, Jameson GJ, 'Coalescence of bubble pairs in surfactant solutions', Proceedings of XXIV International Mineral Processing Congress, Beijing, China (2008) [E1]

Co-authors: Graeme Jameson

2008Ata 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]

Co-authors: Graeme Jameson

2006Ata S, Jameson GJ, 'Flotation of Dispersed Silica Particles', Proceedings of XXIII International Mineral Processing Congress, Istanbul, Turkey (2006) [E1]

Co-authors: Graeme Jameson

2005Ata S, Agarwal A, Jameson GJ, 'The Formation of Bubble Clusters in Flotation Cells - Effect of Impeller Speed', Centenary of Flotation Symposium, Brisbane (2005) [E1]
2005Ata S, Pigram SM, Jameson GJ, 'Tracking of Particles in the Froth Phase - An Experimental Technique', Centenary of Flotation Symposium, Brisbane (2005) [E1]

Co-authors: Graeme Jameson

2003Ata S, Ahmed N, Jameson GJ, 'Gangue Drainage in Flotation Froths', XXII International Mineral Processing Congress, Cape Town, South Africa (2003) [E1]

Co-authors: Graeme Jameson

1999Ata S, Ahmed N, 'The effect of hydrophobicity on the froth phase behaviour', 27th Australasian Chemical Engineering Conference, Newcastle (1999) [E1]
1998Ata S, Ahmed N, 'Particle Shape Effects on Entrainment in Flotation', Proceedings of the 26th Australasian Chemical Engineering Conference, Port Douglas, Australia (1998) [E1]
1998Ata 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 10 more
Edit

Grants and Funding

Summary

Number of grants11
Total funding$1,591,637

- Indicates that the researcher may be seeking students for this project.

Click on a grant title below to expand the full details for that specific grant.

2012 (2 grants)

Particle-Stabilised Bubble and Droplet Interfaces$315,000
Funding Body: ARC (Australian Research Council)

Project Team
Professor Erica Wanless, Doctor Seher Ata
SchemeRole
Discovery ProjectsInvestigator
Total AmountFunding StartFunding Finish
$315,00020122014
GNo:G1100202

2011 Emerging Research Leaders Program$15,000
Funding Body: University of Newcastle

Project Team
Doctor Seher Ata
SchemeRole
Emerging Research Leaders ProgramChief Investigator
Total AmountFunding StartFunding Finish
$15,00020122012
GNo:G1200512

2011 (1 grants)

Improving the recovery of coarse particles in flotation$25,000
Funding Body: University of Newcastle

Project Team
Laureate Professor Graeme Jameson, Doctor Seher Ata
SchemeRole
Near Miss GrantInvestigator
Total AmountFunding StartFunding Finish
$25,00020112011
GNo:G1001040

2010 (1 grants)

The influence of frother types on sulphide minerals flotation $17,000
Funding Body: University of Newcastle - Faculty of Engineering & Built Environment

Project Team
Doctor Seher Ata
SchemeRole
Pilot GrantChief Investigator
Total AmountFunding StartFunding Finish
$17,00020102010
GNo:G0900064

2008 (1 grants)

XXIV International Mineral Processing Congress, Beijing, China, 24/9/2008 - 28/9/2008$1,700
Funding Body: University of Newcastle

Project Team
Doctor Seher Ata
SchemeRole
Travel GrantChief Investigator
Total AmountFunding StartFunding Finish
$1,70020082008
GNo:G0189318

2007 (2 grants)

Investigation of bubble clusters in froth flotation$8,000
Funding Body: Newcastle University

SchemeRole
Independent investigator grantsChief Investigator
Total AmountFunding StartFunding Finish
$8,00020072007
GNo:18101788

Flotation 07, Cape Town, South Africa, 6/11/2007 - 9/11/2007$1,700
Funding Body: University of Newcastle

Project Team
Doctor Seher Ata
SchemeRole
Travel GrantChief Investigator
Total AmountFunding StartFunding Finish
$1,70020072007
GNo:G0188070

2006 (3 grants)

Extending the range of the flotation process for particle separation$950,000
Funding Body: ARC (Australian Research Council)

Project Team
Laureate Professor Graeme Jameson, Doctor Seher Ata
SchemeRole
Discovery ProjectsInvestigator
Total AmountFunding StartFunding Finish
$950,00020062010
GNo:G0185241

Behaviour of particles during coalescence of bubbles$5,909
Funding Body: NEWCASTLE UNIVERSITY

SchemeRole
INDEPENDENT INVESTIGATOR GRANTChief Investigator
Total AmountFunding StartFunding Finish
$5,90920062006
GNo:18076861

Floatation of Dispersed Fine Silica Particles$2,600
Funding Body: Ian Potter Foundation

Project Team
Doctor Seher Ata
SchemeRole
Travel GrantChief Investigator
Total AmountFunding StartFunding Finish
$2,60020062006
GNo:G0186580

2005 (1 grants)

Mineral Flotation - Integrating Science and Practice$249,728
Funding Body: ARC (Australian Research Council)

Project Team
Laureate Professor Graeme Jameson, Doctor Seher Ata
SchemeRole
Linkage ProjectsInvestigator
Total AmountFunding StartFunding Finish
$249,72820052007
GNo:G0185579
Edit

Research Supervision

Number of current supervisions1
Total current UoN PhD EFTSL0.7

For supervisions undertaken at an institution other that the University of Newcastle, the institution name is listed below the program name.

Current Supervision

CommencedProposed
Completion
ProgramSupervisor TypeResearch Title
20112014PhD (Chemical Engineering)Principal SupervisorStabilisation of Bubbles and Froth with Colloidal Particles and Inorganic Electrolytes

Past Supervision

YearProgramSupervisor TypeResearch Title
2014PhD (Chemical Engineering)Co-SupervisorStudies of Froth Recovery in Flotation
2014PhD (Chemical Engineering)Co-SupervisorBehaviour of Bubble Clusters in a Turbulent Flotation Cell
2013PhD (Chemical Engineering)Co-SupervisorDetachment of Particles From Bubbles in a Turbulent Motion
2013PhD (Chemical Engineering)Co-SupervisorThe Attachment of Bubbles to Composite Particles
Edit

Dr Seher Ata

Work Phone(02) 4921 5881
Fax(02) 4960 1445
PositionConjoint Senior Lecturer
Centre for Multiphase Processes
School of Architecture and Built Environment
Faculty of Engineering and Built Environment
The University of Newcastle, Australia
Office
EB120,
Engineering B,
Callaghan
University Drive
Callaghan NSW 2308
Australia
URL:www.newcastle.edu.au/profile/seher-ata-215