PTD Supporters in Academia

Sheridan logo Sheridan is one of Ontario’s leading postsecondary institutions, educating approximately 23,000 full-time and 18,500 continuing and part-time studies students in over 120 programs every year on three campuses Ontario – Oakville, Brampton and Mississauga. An award-winning institution, Sheridan attracts students from across Canada and around the world. Sheridan’s 170,000 alumni play a critical role in shaping the future of our society in the fields of arts, business, community service, health, technology, and the skilled trades.

 Daniel Liao Headshot

Daniel Liao, M.Eng., P.Eng. 

A chemical engineer by training, Daniel is an Associate Dean with Sheridan College’s Faculty of Applied Science and Technology, and is currently overseeing the School of Skilled Trades and Apprenticeship at the Davis Campus in Brampton. Over the five years that Daniel has served at Sheridan, he was heavily involved in community outreach with the promotion of STEM programming. He has also developed partnerships with industry to offer opportunities for students to work on grant-funded applied research projects, primarily in the clean technologies field. Previous to Sheridan, Daniel was a Research Associate at the University of Toronto where he performed engineering for “Reinvent the Toilet Challenge”, a high-profile project funded by the Bill & Melinda Gates Foundation aimed at creating a low-cost, high-tech sanitation system for the developing world.  Regarding PTD, he writes:

Pass-through distillation is truly the bioeconomy game changer. It has the ability to de-risk so many next-generation industrial bioprocesses that struggle techno-economically from low product concentrations heading into recovery or their use of finicky organisms. What is best about it is its ingenious yet straightforward application of the laws of thermodynamics.

UofTlogo   University of Toronto, Canada

BradSeville headshot

 Dr. Bradley A. Saville

Dr. Saville is a Professor of Chemical Engineering and Applied Chemistry at the University of Toronto, with specific expertise in bioprocess technology, biofuels and renewable energy systems, industrial applications of enzymes, economics, and life cycle analysis. He has been a technical advisor and consultant to various Government agencies and to several organizations that produce biofuels and biochemicals. In addition, Brad is a Consultant and Director for Chemical Engineering Research Consultants Ltd, and Founder/Principal of Savant Technical Consulting. He is a published co-author of a number of scientific books and articles.


Dr. Saville Is an external director for Drystill, a company commercializing PTD equipment.

SteveFurlong headshot


Steve Furlong M.Eng. (U of T)

Steve has spent several years with Drystill researching all aspects of commercialization of PTD equipment and building prototypes.



MacLogo   McMaster University, Hamilton, Canada


Dr. Amin Rajabzadeh


Unicamp logo

  University of Campinas, Brazil 


Dr. Adriano Mariano

My research program is aimed at developing technology, design tools and methodologies, and human resources to create energy-efficient technologies and sustainable biorefinery designs. I combine Process Systems Engineering tools with experiments to convert R&D technology efforts into process concepts and sustainable business opportunities for the sugarcane and forest industry.

I have been studying the application of vacuum fermentation to butanol production, and a major cost challenge of this technology is the condensation of vapor products at low pressures. I believe PTD can be a solution to this problem.



Manchester U logo   University of Manchester,  UK


Prof. Dr. Ir. Anton A. Kiss, CEng CSci FIChemE 
Royal Society Wolfson Research Merit Award holder 

Tony has worked for over a decade in the chemical industry, as Senior Project Manager and RD&I Specialist in Chemical Process Technology at AkzoNobel Specialty Chemicals – now rebranded as a new company,Nouryon. At the same time, he was appointed as (part-time) full professor at the University of Twente (SPT group). Just a few years later, he started as full professor & chair at The University of Manchester(CEAS). During the past decades, he carried out numerous research & industrial projects, published many textbooks, chapters, patents, and 100+ scientific articles. In addition, he won several prestigious awards:Royal Society Wolfson Research Merit Award, Hoogewerff Jongerenprijs, and AkzoNobel Innovation Excellence Award. Tony Kiss is also a Fellow of IChemE, research fellow of The Royal Society, and a senior member of established professional institutions: AIChE, CAPE-WP, EFCE, ESMC, IChemE, PSE-NL, SCI. Regarding PTD, he writes:

Distillation remains the most used separation technology in the chemical industry, in spite of its large energy demands caused by low thermodynamic efficiency. Pass-through distillation (PTD) is an emerging hybrid separation technology that efficiently combines distillation with absorption. The basic idea of pass-through distillation involves the decoupling of the evaporation and condensation steps of a distillation process, by means of an absorption-desorption loop that passes through the component to be separated and thus allows the use of different pressures and types of heating/cooling utilities. Its main applications are in areas where conventional distillation  does not work, and other methods are either too costly or prone to fouling.

   Lambton College, Sarnia, Canada

Reyna Gomez 2019


Dr. Reyna Gomez-Flores 

a Gomez-FloresUClogo           bucharest logo


Dr Edmund Maican, Dr. Alberto Coz, and Dr. Mariana Ferdez, collaborating  from the Universidad de Cantabria and Universitatea Politehnica Din Bcuresti, authored the paper below, featuring a thorough description of PTD.


They conclude their treatise with this paragraph:

“The pass-through distillation system has a very good chance to become a new standard among separation technologies due to the following main advantages:
- Depending on system configuration, this technology can perform with up to 60% [savings over] the energy required by conventional distillation;
- Room-temperature operation in the evaporator-absorber module offers a solution towards the recovery of biocatalysts and enzymes;
- Water lost through evaporation in cooling tower is proportional to the energy that it should remove from the system. In pass-through distillation, up to 80% reduction in water consumption can be achieved due to the less energy used and also because of the replacement of energy-inefficient equipment (distillation columns, evaporators, rectifier columns, etc.);
- Possibility to work with high solids fermentable broth;
- Overall reduction in energy consumption proportionally translates into GHG reduction;
- Lower maintenance and capital expenditure.”