PhD Student (f/m/d) Experimental analyses of Ion-Specific effects on Bubble-Particle Attachment and Bubble-Bubble Coalescence in Flotation / Completed university studies (Master/Diploma) in the field of Process Engineering, Chemical …

Organisation/Company

Helmholtz-Zentrum Dresden-Rossendorf - HZDR - Helmholtz Association

Research Field

Other

Researcher Profile

First Stage Researcher (R1)

Application Deadline

1 May 2026 - 22:00 (UTC)

Country

Germany

Type of Contract

To be defined

Job Status

Other

Offer Starting Date

1 Jun 2026

Is the job funded through the EU Research Framework Programme?

Not funded by a EU programme

Is the Job related to staff position within a Research Infrastructure?

No

Area of research:

PHD Thesis

Part-Time Suitability:

The position is suitable for part-time employment.

Starting date:

01.06.2026

Job description:PhD Student (f/m/d) Experimental analyses of Ion-Specific effects on Bubble-Particle Attachment and Bubble-Bubble Coalescence in Flotation

With cutting-edge research in the fields of ENERGY, HEALTH and MATTER, around 1,500 employees from more than 70 nations at Helmholtz-Zentrum Dresden-Rossendorf (HZDR) are committed to mastering the great challenges facing society today.

The Institute of Fluid Dynamics is conducting basic and applied research in the fields of thermo-fluid dynamics and magnetohydrodynamics in order to improve the sustainability, the energy efficiency and the safety of industrial processes.

The Department of Fluid Dynamics Resource Technology Processes is looking for a PhD Student (f/m/d) Experimental analyses of Ion-Specific effects on Bubble-Particle Attachment and Bubble-Bubble Coalescence in Flotation. 

Your tasks

# Measure ion-specific effects on bubble-particle attachment and detachment using an innovative flotation kinetics apparatus
# Study particles from industrial partners to map attachment and detachment kinetics as functions of water composition, reagents, dosages, and their interactions
# Quantify ion-specific effects on bubble coalescence using innovative multicolour thin-film interferometry
# Evaluate synergistic effects between ions in recycled water and added frothing agents, and determine film lifetimes for model development
# Use an inline endoscope and an optical fiber Doppler probe (OFDP) to determine bubble surface loading as well as bubble size and velocity
# Integrate and interpret measurement data to derive robust relationships between water chemistry, reagents, and interfacial flotation mechanisms
# Support model development and model parameterization (e.g., attachment/detachment kinetics, coalescence models) based on experimental data
# Document, present, and publish results in reports, scientific contributions, and project meetings

Your profile

# Completed university studies (Master/Diploma) in the field of Process Engineering, Chemical Engineering, Chemistry (especially Physical Chemistry / Surface Chemistry), Physics, Mechanical Engineering, Materials Science, or a comparable discipline
# Experience in or strong interest in interfacial physics/chemistry, surface science, wetting, thin films, and colloidal/interfacial phenomena
# Experience in or strong interest in bubble-particle interactions, especially attachment/detachment and flotation kinetics
# Basic familiarity with multiphase measurement systems (e.g., optical probes, inline endoscopy, interferometric methods) is an advantage
# Interest in model development and model parameterization based on experimental data (e.g., kinetic models, coalescence models) is desirable
# Independent, structured, and reliable way of working in the laboratory
# Strong problem-solving skills in experimental setup, instrumentation, and measurement campaigns
# Good teamwork and communication skills in an interdisciplinary project environment
# Willingness to collaborate with industrial and academic partners and to participate in experimental campaigns; a secondment of around 3 months in Cape Town, South Africa is planned
# Good programming skills for data analysis, image processing, and model fitting (e.g., Python, MATLAB)
# Good written and spoken English

Our offer

# A vibrant research community in an open, diverse and international work environment
# Scientific excellence and extensive professional networking opportunities
# A structured PhD program with a comprehensive range of continuing education and networking opportunities - more information about the PhD program at the HZDR can be found here
# Salary and social benefits in accordance with the collective agreement for the public sector (TVöD-Bund) including 30 days of paid holiday leave, company pension scheme (VBL)
# We support a good work-life balance with the possibility of part-time employment, mobile working and flexible working hours
# Numerous company health management offerings
# Employee discounts with well-known providers via the platform Corporate Benefits
# An employer subsidy for the "Deutschland-Ticket Jobticket"

We look forward to receiving your application documents (including cover letter, CV, diplomas/transcripts, etc.), which you can submit via our online-application-system.  

This research center is part of the Helmholtz Association of German Research Centers. With more than 42,000 employees and an annual budget of over € 5 billion, the Helmholtz Association is Germany's largest scientific organisation.

E-mail

personal@hzdr.de

Website

https://www.hzdr.de/job2208e

Website for additional job details

https://www.hzdr.de/job2208e

Number of offers available

1

Company/Institute

Helmholtz-Zentrum Dresden-Rossendorf - HZDR - Helmholtz Association

Country

Germany

City

Dresden

Geofield

City

Dresden

Website

https://www.hzdr.de

Street

Bautzner Landstraße 400

Postal Code

01328

E-Mail

kontakt@hzdr.de

Phone

+49 351 260-0

Fax

+49 351 269-0461

• X (formerly Twitter)
• Facebook
• LinkedIn
• Whatsapp
• 
  More share options
  • E-mail
  • Pocket
  • Viadeo
  • Gmail
  • Weibo
  • Blogger
  • Qzone
  • YahooMail