TU Delft: Circular Economy: An Introduction
Note
I found nothing new in this course. Everything mentioned was already taught in the online course taught by Dr. Guido Sonnemann in the first semester.
1. Reinforced that Circular Economy as System Design, Not Just “Recycling”
Course insight: The first module reframed the problem: planetary challenges (resource scarcity, waste, environmental impact) are systemic. The circular economy is not a “plug-in” add-on, but a full paradigm shift in how products are designed, used, and re-used.
My takeaway: As a materials-science & recycling student, this only reinforced what I already knew and have learnt multiple times throughout this masters degree, that my work doesn’t start (or end) at material selection. Instead, I should think in closed loops: from raw material sourcing → product design → use → end-of-life recovery/recycling/revalorization.

2. Value Creation via Circular Business and Supply-Chain Models
Course insight: One episode explores how closed-loop supply chains and reverse logistics enable new business models: shifting from selling products to providing services, leasing, take-back programs, remanufacturing, or product-as-service models.
My takeaway: This goes beyond technical recycling, there is economic viability in circular models. For example, in recycling construction-based recycling projects (my background), circular business models could guarantee material recapture and sustainable material flows rather than pure disposal or downcycling.

3. “Design for R” Philosophy
Course insight: The course emphasizes designing products to last longer, be repaired, remanufactured or recycled, rather than built for obsolescence.
My takeaway: Given my interest in materials science and recycling, this principle resonates strongly: when developing new materials/processes (e.g. in mine waste recycling), I must consider entire lifecycle: durability, ease of disassembly, reuse potential, recyclability, not just performance in first use. One nice thing to go through again was fairphone being mentioned. I discovered fairphone through a colleague who is also enrolled in the same program, Valentina Chessa, so it was interesting to see Fairphone used as a case study in this course.

Thank you for taking the time out to read my reflections for the optional course! 🙂
I hope you liked my reflections and learnings from the course. All proof of completion can be found in here:
Lastly, since this will probably be my last post on this blog. I also want to share my love for photography, specifically astrophotography, with my current colleagues and all future readers. I will miss posting here 😢
About SHAH SAUD
Hi! I am Shah. Professionally, I like to exist in the intersection of materials and circularity. Currently pursuing a Master’s in Advance Materials Innovative Recycling at Universidad Politécnica de Madrid (UPM). Outside my professional sphere, you will find me chasing sunsets, travelling to lesser-known destinations and making a mean carrot cake.





