Menu

msc
thesis/internship project; enhancing polyhydroxyalkanoates (pha) production from municipal waste activated sludge

Type of project: MSc Thesis/internship
Anticipated start: from April, 2025
Duration: >5 months
Location: Wetsus, European center of excellence for sustainable water technology (Leeuwarden, the Netherlands)

Offers & Benefits:
– Allowance: The allowance for students is €425 per month. This allowance is not forn intern students who have a grant f.e. Erasmus (mundos) or other.
– Collaborative interaction within a dynamic, multidisciplinary and multinationals research team between Wetsus and TU Delft.
– You would be part of a dynamic team with industrial partners where you have the chance to expand your network and improve your skills

Project description:

Municipal waste activated sludge (WAS) is produced in large quantities daily as a by-product of wastewater treatment processes. PHA-storing phenotypes have been found commonly present in WAS. PHA, a class of  biodegradable and biobased polymers with thermoplastic like properties, can therefore be directly produced by exploiting the PHA-accumulation potential of WAS. Given the continuous availability of surplus WAS in wastewater treatment plants (WWTPs), every WWTP has the potential to function as a PHA production facility in addition to producing treated effluent. To produce PHA from WAS, one challenge is that WAS community presents a complex system with a coexistence of variety kinds of microorganisms, including also flanking non-PHA accumulating microorganisms. Any general activity of flanking populations will reduce the product yield and productivity. Thus, fundamental insights are needed to understand the competition between PHA-storing and flanking populations that can guide to optimize the bioprocess conditions leading to enhanced PHA production. The aim of this project is to apply the fundamental microbiology principles to the bioprocess design. Defining bioprocess conditions specifically related to substrate feeding types and feeding strategies to enhance PHA production. Establishing broadly applicable methods can help to facilitate development and growth of large scale PHA supply chain networks that can satisfy market needs.

Tasks:

  • Bioprocess design and bioreactors operation
  • Water and polymer quality analysis
  • Bioprocess modelling

Your profile:

  • Background in environmental engineering, biochemistry, microbiology or related fields;
  • Experience and knowledge in bioprocess design would be a plus.
  • Highly motivated, enthusiastic, and willing to learn about biotechnology and biochemistry;
  • Established hands-on laboratory and instrument (e.g. TGA) experience would be a plus.
  • Fluent in English and good English writing skills
  • EU citizen or non-EU citizen already enrolled in a Dutch university and living in the Netherlands.

How to apply:
Please upload your cv (max 2 A4 pages), motivation letter (max. 1 A4 page), and a list of the attended courses and the equivalent ECTS via the application form provided below (in English). Feel free to contact Yizhou Xing (yizhou.xing@wetsus.nl), if you have further questions or need more information.

Application form; Enhancing polyhydroxyalkanoates (PHA) production from municipal waste activated sludge

  • Max. bestandsgrootte: 1 GB.
  • Max. bestandsgrootte: 1 GB.

Towards an economy of value preservation | By Niels Faber

Abstract

The realisation of a circular economy has thus far unfolded under the assumption that it would fit within existing economic arrangements. In practice, we witness many circular initiatives struggling to give shape to their ambitions, let alone develop to maturity. These past months, various material recycling organisations terminated their activities, seeing virgin alternatives from other parts of the world flooding the market at prices against they cannot compete. If the transition towards a circular economy (i.e. an economy of value preservation) is to be taken seriously, a new perspective on value in our economic system seems unavoidable, as the rewriting of the rules of the economic game. At this moment, current perceptions of value stand in the way of this transition both at micro as well as macro levels. Several contours for a collective exploration of new directions of value and economic configuration that foster circular transition will be addressed.

Searching Innovation for the Common Good | By Cees Buisman

Abstract

In his key note he will conclude after a life of innovations that it is impossible that humanity will stay within the save planetary boundaries with innovation only. We should be more critical about the behaviour of the rich population in the world and more critical about new innovations that prove to be dangerous, like the PFAS crisis shows at this moment. In his keynote he will investigate how to look at the world that can stay within the save planetary boundaries, how should we change ourselves? It is clear if we only talk about the words of science and systems we miss the essential words of how we should cooperate and change ourselves. And his search for coherent save innovations. Which innovations will be save and will lead to a fair and sustainable world? And will lead to a world we want to live in.

Future-fit economic models: What do they have in common – how can they join forces? | By Christian Felber

Abstract

There is a growing number of new sustainable, inclusive, cohesive, participatory, just and humane economic models. A possible next step in the discourse about them is the comparative analysis in order to find out key commonalities, potential synergies, and “requirements” for a future-fit economic model. The author and initiator of the Economy for the Common Good provides an overview of these „new sustainable economic models“ and compares them according to underlying values, principles, and practical ways of implementation. The keynote addresses the cooperative spirit of the conference and prepares the ground for its public highlight on the eve of June 3rd, the round table with representatives of diverse future-fit economic models.

The era of postgrowth economics | By Matthias Olthaar

Abstract

The scientific debate on whether economies should always continue to grow increasingly becomes a political and societal debate. On the one hand further growth for the most affluent countries seems neither possible nor valuable, but on the other hand there is still lack of understanding and knowledge what a non-growing economy should look like and could best be governed. In this lecture we discuss various policy measures that can be realistically implemented, take into account government finances and aim at a higher quality of life despite a non-growing economy.

Democratic principles for a sustainable economy | By Lisa Herzog

Abstract

Democracy is under pressure, and less and less able to stir the economy into a sustainable direction. Therefore, to stabilize democracy and to make possible the socio-ecological transformation of the economy, democratic principles need to be implemented directly in the economy. This is not only a matter of morality, but also has practical advantages. Democratizing the economy can increase legitimacy and take advantage of the “knowledge of the many” to accelerate the transformation. Democratic practices, especially deliberation, allow bringing together different forms of knowledge, which is crucial for the local implementation of principles of social and ecological sustainability. This talk explores what this idea means in more concrete terms, from democratic participation in the workplace to the democratization of time.

Market, state, association, and well-being. An historical approach | By Bas van Bavel

Abstract

Over the past decades, markets have conventionally been seen as the best instrument to stimulate economic growth and enhance prosperity and well-being. The automatic link between markets and economic growth is increasingly questioned, however, as well as the automatic link between economic growth and enhancement of well-being. This has led to attempts to capture well-being development more directly than through GDP per capita figures and has produced a more variegated picture of well-being growth. Also, this has led to a shift of focus to other coordination systems than the market, as primarily the state but increasingly also the association. Analyses of the historical record suggest that especially the latter could be a vital component in future well-being.