Daniele Chinello’s PhD adventure is one of connection and separation – separating charged ionic particles while connecting with people and building lasting friendships. His contagious positivity and perseverance brought a small brick of knowledge as he puts it, but he hopes will inspired many others to get to that great achievement.
With great hand gestures and a smile on his face, Daniele Chinello – PhD candidate in the Desalination & Concentrates theme – reflects on his past four years. His proudest accomplishments extend beyond the lab, shining instead in the moments that highlight the deep bonds he built with his students over time. Discovering his love for coaching and experiencing personal growth emerged as the true achievements of his research. Never mind his advancements in membrane making technology. As he describes his book, it is merely one brick in the tower of worldly knowledge. A start of knowing more, and no close chapters. Yet it is quite the thesis.
In the Italian river Po, intensive rice farming and floodings has resulted in too high concentrations of nitrogen-based molecules. Good news for exotic crab, but the local wildlife has seen a rapid decline. And, not unsimilarly, when it comes to agricultural or horticultural water recycling, we are facing a major challenge. Conventional technologies are a plenty to separate ionic particles from water, but making a distinction between similar particles is far from easy. Daniele was tasked to split chloride from nitrate – two equally-charged ionic particles with similar physicochemical characteristics.
Comparable problems, such as separating potassium and sodium ions, have been studied in the past, but no universal solution exists. For his PhD, Daniele developed a novel membrane designed to leverage the subtle differences in ion properties to achieve separation. Specifically, his research focused on ion dehydration energy, the energy required to remove the water shell surrounding an ion before it passes through the membrane. This subtle difference in dehydration energy between nitrate and chloride became the key to his separation strategy.
Developing the membrane was no simple task. Daniele likens the process to making pancakes: combining different ingredients and using heat to make small yellowish “pancakes”, but these were no ordinary meals. Each “ingredient” had to be meticulously chosen to optimize the membrane’s structure and performance, resulting in a recipe for innovation rather than breakfast.
With the help of interaction modelling, many practical dilemmas solved, and various additives in the membranes, his secret recipe was complete. To sum up the past four years: PVC shows a promise, next it needs to be tested with real wastewater. Yet the researcher learned an arguably even better lesson: “What I like best about Wetsus is that it is close and personal. We are bringing so many people together. Every day, I came into the lab and just had a brief chat with others. It always made my day. We built human relationships, empathy and joy!” Daniele’s PhD was an adventure he would undergo again, without a doubt.