Enrique Ruiz-Trejo, PhD

Research & Development

Enrique Ruiz-Trejo has a MSc in Chemistry from UNAM, Mexico and obtained his P.h.D. in Materials from Imperial College. He was then lecturer at UNAM and Humboldt scholar at the Max Planck Institute for Solid State Research. This was followed by research positions at Risoe National Laboratories, Denmark, University of St Andrews and Imperial College working in materials for energy applications and gas separation membranes, the development of porous electrodes for fuel cells and the manufacture of metal-ceramic composites.

He works at Smart Separations as R&D Manager working in all projects related to membrane process development and manufacture and microfiltration, conversion and capillary porous supports. ERT enjoys music (S Rodriguez, K Wecker, A Lara, M Sosa), reading (Garcia Marquez, Rulfo, Franzen, Chomsky) and cinema (Kubrick, Buñuel, Egoyan) and walking on the mountains of Zacatlan, Mexico.

Get to know Enrique

Name a favourite scientist, inventor or researcher and tell us why you like them?

Nikola Tesla, the guy was really crazy. Great vision, defeated Edison in the AC vs DC power supply debate and he didn’t need to electrocute an elephant to do that. Albert Einstein, he managed to create two branches of modern Physics with two contradictory assumptions: corpuscular theory leading to quantum physics and wave theory leading to relativity. Linus Pauling, not only a great chemist but also got the Nobel Peace prize. The last two also had a strong influence in public opinion at the time. Currently, sadly, that is left to TV personalities.

What do you think is the most interesting area of research for the future? (Yes, it’s broad).

Well, whatever anyone wants to develop will require energy: from AI to genetics, from communications to transport, they all need energy. So, energy.

Tell us one of your favourite quotes?

“Three passions, simple but overwhelmingly strong have governed my life: the longing for love, the search for knowledge, and unbearable pity for the suffering of mankind.“ ― Bertrand Russell

What gadget or piece of technology are you most excited by?

I’m really fascinated by search engines. They can find anything, really.

If you could put SSL’s filter in anything, where would you put it?

Well, everywhere really, in cars, air conditioning units, microreactors, masks, liquid clarification filters, bioreactors, but maybe I’d like to see them as part of the concept of Lab in a chip.

Which book have you given away the most. Why?

Memory of Fire, Century of the Wind by Eduardo Galeano. It has strongly influenced my view of the world, even years after having read it for the first time.

The endless possibilities of the technology and the friendly atmosphere in the team.

Enrique Ruiz-Trejo, PhD

Fun Filtration Facts

Juice with or without pulp/bits? (i.e. filtered or unfiltered)

Either one as long as it doesn’t have added sugar.

Do you filter your coffee? If so how do you take it? (moka pot, espresso machine, french press etc.)


Where/what was the best water you ever tasted? (i.e. tap water in Lisbon or Volvic water etc.)

The water in the natural wells of Zacatlan, Mexico. Unfiltered.

What’s the freshest air you’ve ever experienced? (i.e. on a mountain in the Pyrenees).

In Zacatlan, Mexico.

If you could put SSL’s filter in anything, where would you put itIf you had to get rid of one tiny particle, which would it be? (i.e. cat hair, pollen)

Soot from cars. Cat hair and pollen are natural and I love cats and flowers.

If your air purifier had to emit an odour instead of absorbing them, which smell would you choose?

None, I wouldn’t like to have a machine emitting an odour that I can find in nature.