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PhD Position – Recovery of Residual Resources at end-of-pipe in Recirculating Aquaculture Systems


The Technical University of Denmark invites applications for a Ph.D. position to focus on methods that ensure resource recovery and minimal environmental impact, at the DTU Aqua, Denmark – Feb 2022

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General Info

Position: PhD Position
No. of Positions: 1
Research Field: , , ,
Deadline to Apply: Expired
Joining Date: ASAP
Contract Period: 3 Years
Salary: According to Standard Norms

Section for Aquaculture
Technical University of Denmark
Technical University of Denmark (DTU), Denmark


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Qualification Details

Candidates should have a two-year master's degree (120 ECTS points) or a similar degree with an academic level equivalent to a two-year master's degree. Ideally, you have a degree in Engineering, Biochemistry, or Biotechnology preferably with a specialization in biorefinery, water treatment, or similar.

Our ideal candidate

  • Possesses scientific curiosity and is eager to test hypotheses to advance current knowledge
  • Has previous experience in experimental work with down streaming or water treatment
  • Has an interest in circular economy concept applied to aquaculture
  • Is interested in RAS and practical application of the results achieved
  • Has a keen interest in laboratory analysis and development of methods
  • Shows proficiency in written and spoken English, and a determination for disseminating your work

Approval and Enrolment

The scholarship for the PhD degree is subject to academic approval, and the candidate will be enrolled in one of the general degree programmes at DTU. For information about our enrolment requirements and the general planning of the PhD study programme, please see DTU's rules for the PhD education.


Assessment of the applicants will be made by Head of Section Per Bovbjerg Pedersen, Senior researcher Merlin Alvarado, and Researcher Carlos Letelier-Gordo.

Responsibilities/Job Description

If you want to start a scientific carrier and contribute to the continued development of sustainable and cost-efficient end-of-pipe technologies in freshwater and saltwater recirculating aquaculture systems (RAS), this is an opportunity for you. At DTU Aqua we are focusing on methods that ensure resource recovery and minimal environmental impact, allowing the transition of recirculating aquaculture systems (RAS to a more sustainable and circular economy strategy. To achieve this, our research within end-of-pipe treatment treats waste streams from aquaculture with emphasis on nitrogen, phosphorous and organic matter removal. In this PhD, different cost-effective technologies and holistic strategies for valorizing and downstreaming waste from RAS with a focus on circular economy will be investigated. Specifically, new innovative methods for phosphorous recovery, carbon sources for denitrification, organic coagulants, and dewatering technologies for organic matter treatment and transport.


You will be involved in a collaborative research project involving several European research institutions. Your main role will be to design and conduct research on the topic in our facilities in Hirtshals. This involves practical experiments in lab-scale and industrial RAS, as well as laboratory analysis and studies aimed to develop cost-efficient end-of-pipe technologies in freshwater and saltwater RAS, ensuring resource recovery and minimal environmental impact. In addition, you will participate in other ongoing related research activities in the Section for Aquaculture.

How to Apply?

Application Method: Online Application
Ref. No.: -

Application Procedure

Your complete online application must be submitted no later than 14 February 2022 (Danish time).

Applications must be submitted as one PDF file containing all materials to be given consideration. To apply, please open the link "Apply online", fill out the online application form, and attach all your materials in English in one PDF file. The file must include:

  • A letter motivating the application (cover letter)
  • Curriculum vitae
  • Grade transcripts and BSc/MSc diploma including official description of grading scale

You may apply prior to ob­tai­ning your master's degree but cannot begin before having received it.

Applications received after the deadline will not be considered.

All interested candidates irrespective of age, gender, race, disability, religion or ethnic background are encouraged to apply.

About the Section

The successful candidate will be employed at the Section for Aquaculture located in Hirtshals in the scenic Northern part of Denmark. Here, we perform research on sustainable farming technology, recirculation, water quality, environmental footprint, as well as research on fish nutrition, welfare, and physiology.

About the Employer:

Other details


DTU is a leading technical university globally recognized for the excellence of its research, education, innovation and scientific advice. We offer a rewarding and challenging job in an international environment. We strive for academic excellence in an environment characterized by collegial respect and academic freedom tempered by responsibility.

Salary and appointment terms

The appointment will be based on the collective agreement with the Danish Confederation of Professional Associations. The allowance will be agreed upon with the relevant union. The period of employment is 3 years.

You can read more about career paths at DTU here.

Starting date will be April 1, 2022 or according to mutual agreement.

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Contact details

Further information may be obtained from Carlos Letelier-Gordo [email protected] or Head of Section Per Bovbjerg Pedersen, [email protected]

You can read more about the Institute and the Section at

If you are applying from abroad, you may find useful information on working in Denmark and at DTU at DTU – Moving to Denmark.

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