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 

Reyna is a biochemical engineer with experience in industrial biotechnology, mainly in microbial fermentation within the Agri-food & biofuels sectors. She holds a Ph.D. in Biochemical Engineering from The University of Western Ontario (UWO, Canada), and a Master Degree in Advanced Technology from the Applied Biotechnology Research Centre (CIBA-IPN, Mexico). She works as an Applied Research Scientist in Biotechnology & Bioenergy, at the Bio-Industrial Process Research Centre (BPRC) within Lambton College’s Applied Research and Innovation Department since 2017. She has been involved with different research projects as a Principle Investigator (PI), and currently working in the Drystill project, Concurrent Alcohol Recovery and Fermentation (CARAF).

The Drystill technology, based on the principle of Pass-through Distillation (PTD), can solve several separation problems currently being faced by the biofuels’ sector and reduce energy consumption during the overall process. During our experimental trials, we have seen the advantages of using the CARAF system during our ethanol fermentations. Furthermore, Drystill technology applications could be extended to different bioprocess and act as a route to avoid microbial inhibition with in-situ product recovery.


Teri Doxtator M.Eng

Teri Doxtator is a researcher at Lambton College. Teri is from Sarnia, Ontario and attended the University of Western Ontario in London. At UWO she completed a Bachelor of Engineering Science Degree (BESc) and a Master of Engineering Degree (M.Eng) specializing in Chemical Engineering. In her M.Eng Program she was able to work on a research project with the Institute for Chemicals and Fuels from Alternative Resources (ICFAR). Teri has always been interested in the energy and fuel sector and specifically in biofuel production.

The Drystill Project at Lambton College has been an interesting research opportunity. The project that we are working on pairs pass through distillation with a continuous alcohol production fermentation. The results that we have obtained show that this technology could be very exciting to bioprocessing companies that utilize fermentations. From an environmental and economic perspective I believe that pass through distillation has the potential to make a huge positive impact across many other industries as well. 


Carlos Diaz B.Sc

Carlos Diaz is a 4th Class Power Engineer who is part of the group working on the Drystill project. One of his key roles as a researcher is to follow the procedures in numerous fermentations and perform mechanical adjustments to the equipment involve in the process (i.e. pumps, distillation unit, valves, etc.). His educational background includes a bachelor’s degree in Petroleum Engineering at Universidad Industrial de Santader – UIS in Colombia, and Chemical Production and Power Engineering program at Lambton College in Canada. He has worked as a researcher for one (1) year at the University of São Paulo – USP in Brazil. Also, He has worked at the Bio-Industrial Process Research Centre – Lambton College since 2017.

Carlos believes that the Drystill Techology is an innovated idea which can be enormously beneficial for several industries. As it is well known, ethanol has been identified as a valuable product for a wide range of purposes (i.e. beer brewing, wine making, bioethanol industry). Furthermore, this significantly contributes to the reduction of crude oil consumption and environmental pollution.


Lambton College Co-Op Students:

Picture                      IMG_8883
Kurtis Tamming, McMaster University          Akshat Shah, Mohawk College


UClogo           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.”