Chemical Engineering

Staff

Dr Marijana Dragosavac MEng, MSc, PhD

Photo of Dr Marijana Dragosavac

Senior Lecturer in Chemical Engineering

UG Admissions Tutor

IChemE Representative

Background:

Marijana Dragosavac graduated with an MEng degree in Chemical Engineering from the University of Novi Sad (Serbia). She worked for a Danish company Aker Kvaerner (Vapour Recovery Systems) and Serbian engineering company Worldtech both in oil and gas industry before starting an MSc at the Department of Chemical Engineering in Serbia. This was followed by her work as a Teaching and Research Assistant at the same Chemical Engineering Department in Serbia. Marijana moved to United Kingdom to start a PhD on Particle formulation using membrane emulsification at Loughborough University. In 2011 she finished her PhD and for a year worked as a Knowledge Transfer Associate for Micropore Technologies Ltd., Hatton, UK. In 2012 Marijana was appointed to a lectureship in Chemical Engineering here at Loughborough University and became a Senior Lecturer in 2017.

Key Awards:

  • Formulation Prize at 11th UK Particle Technology Forum, Loughborough, UK, 4-5 April 2012.
  • Best oral presentation at the PSA 2011 conference, Edinburgh, 5-7th September 2011.
  • Best poster presentation at the DIAMOND conference, York, 14-16. December 2010. 

Qualifications:

  • 10/2008-10/2011      PhD in Chemical Engineering, Loughborough University, UK, Thesis title: Membrane Emulsification for engineered particle production, Supervisors: Professor R.G Holdich and Dr G.T. Vladisavljević
  • 10/2005-10/2008      M.Sc. in Chemical Engineering, 2 years,  (10/10), University of Novi Sad, Serbia, Thesis title: Production and characterisation emulsions oil in water with membrane emulsification in stirred cell, Supervisor: Professor Milan Sovilj
  • 10/1996-02/2002      MEng in Chemical Engineering, 5 years, (9.1/10), University of Novi Sad, Serbia, Thesis title: Simulation of extrusion process using Aspen Plus, Supervisor: Dr Darko Krstić

Current teaching responsibilities:

  • Stagewise processes (CGA002)
  • Instrumentation and Control Laboratory (CGB014)
  • Literature review (CGC037 & CGC044)

Current administrative responsibilities:

  • Admissions Tutor for Chemical Engineering undergraduate courses
  • IChemE Representative for the Chemical Engineering department 

Outline of main research interests:

My research expertise lies in the broad field of advanced particulate manufacturing, with a focus on manufacturing particulate material using the dispersion route in which dispersed liquid drops are polymerised as way of tailoring the properties of the resulting material using novel operating techniques. I have established a national and increasingly an international reputation specifically in:

  • Application of a new type of microfiltration membrane and new techniques for generating the shear on the membrane surface providing the possibility to generate larger droplets without risk of droplet breakage.
  • Understanding at a fundamental level the factors that control particle size made using such techniques.
  • Continuous droplet production and, therefore, continuous particle production using a novel membrane emulsification system. This type of system is an ideal starting-point for continuous particle production and it may be adapted to many different types of particles.
  • Control of internal structure and encapsulation of shear and temperature sensitive compounds.

These topics are inherently connected to the major health and wellbeing, the future of manufacturing and environmental challenges that are anticipated to attract more funding during the next few years. 

  • Production of highly uniform spherical inorganic particles with tuneable internal structure
  • Coacervation
  • Formulation
  • Surface functionalization
  • Microencapsulation
  • Controlled release
  • Membrane emulsification
  • Sorption and Ion exchange
  • Emulsions

Grants and contracts:

  • 2017-present  PI, First Grant, Tailoring the micro- and meso-porosity of spherical silica particles using nano/microbubbles as templates, EPSRC, Agilent industrial collaborator, £100k.
  • 2015-present  Co-I, Distinctive project, PI – Leeds University, EPSRC, Sellafield industrial collaborator, total value £4.9m, value to LU £160k.
  • 2014-present            PI, Competitive - Graduate School Individual Studentship, LU, ~£56k.
  • 2013   PI, Competitive - LU Collaborative Research Initiative, AACME, £5k.
  • 2012   PI, Competitive - Leadership grant, Loughborough University, £1.6k.

Recent publications:

Encapsulation of cells/drugs within carriers that selectively target specific part of the body and can release its payload upon a trigger promises to mitigate side effects of conventional drugs and will enable delivery of the unique drug/cells combinations needed for personalized medicine. This paper reports for the first time how a scalable membrane emulsification technique can be successfully used to produce highly uniform pH sensitive particles containing cells suitable to deliver its payload within the colon due to the pH-change. Use of metal membranes with straight through pores enabled for the first time the encapsulation of micron sized material cells, pancreatic islets etc. 

Selected publications:

For students interested in the membrane emulsification.

For the students interested in production of O/W emulsions.

Capsule formation using complex coacervation.

 

Full publication list

External links:

  • Nottingham University (Production of W/O/W emulsions)
  • Institute on Membrane Technology, National Research Council, Italy (Polycaprolactone multicore-matrix particle for the simultaneous encapsulation of hydrophilic and hydrophobic compounds produced by membrane emulsification and solvent diffusion processes; https://doi.org/10.1016/j.colsurfb.2015.06.071)
  • Unicamp Campinas, Brazil (Palm oil encapsulation using membrane emulsification and spray drying)
  • Departamento de Engenharia e Tecnologia de Alimentos UNESP - Campus de São José do Rio Preto, Brazil (Microcapsule formation using complex coacervation)
  • Agilent, Ltd. UK (Inorganic particles)
  • Ashland ltd, UK (Complex coacervation)
  • Halcrest Ltd., UK (Complex coacervation) 

External roles and appointments:

  • Fellow of Higher education (19/5/2015).
  • Member of the Bioencapsulation Group.
  • Member of the Royal Society of Chemistry.
  • Member of IChemE.

Invited lectures:

  • December, 2017: Continuous Encapsulation, Innovation in Encapsulation, London, UK.
  • November, 2017: Encapsulation by Membrane Emulsification, 3rd Latin Microencapsulation Conference, Temuco, Chile
  • September, 2017: Formulation by Membrane emulsification, 9th Microencapsulation school, Berlin, Germany
  • May, 2017: Encapsulation by Membrane Emulsification, 25th Bioencapsulation Conference
  • September 2016:  Formulation by Membrane emulsification, 8th Microencapsulation school, Cork, Ireland.
  • September, 2015: Formulation by Membrane emulsification, Summer School on the use of Membranes, Cetraro, Italy
  • October, 2014: Membrane emulsification, MSc program at AgroPariTech, France.
  • September, 2014: Encapsulation of oil in fish gelatin/gumarabic, 23rd Bioencapsulation Conference, Bratislava, Slovakia