Hawaii 2020

Goldschmidt 2020 Workshop
“Reactive Transport Modeling in Geochemical Systems”
Honolulu, Hawaii USA • 20-21 June 2020

Register Now

Please join us in Honolulu, the stately, cosmopolitan, enchanting capital of paradise, famous worldwide for its spectacular beaches, breathtaking views, inclusive culture, world's most perfect climate, and above all its hospitality, for two days of hands-on training in reactive transport modeling using The Geochemist's Workbench®.

Then stay on to hike Diamond Head, snorkel with the turtles, sip a mai tai, while away the evening at a luau, find a quiet beach, take in the grandeur of nature in this geologic wonder, and of course to attend the Goldschmidt 2020 conference.

Goldschmidt workshop registrationSPECIAL OFFER: Sign up for this workshop for only $100 when you register for the Goldschmidt 2020 conference! Online registration for the Goldschmidt Conference opens December 15 and workshop registration closes May 21, 2020. Previous workshops filled to capacity some months beforehand, so don't delay!

What you will learn. Following a fully hands-on format, you will learn to construct, trace, and interpret models of transport in reacting geochemical systems. Specific topics covered include:

  • Introduction to geochemical modeling
  • Transport in flowing groundwater
  • Dual porosity models (stagnant zones)
  • Kd, Freundlich, and Langmuir sorption
  • Surface complexation
  • Colloid-facilitated transport
  • Reaction kinetics
  • Biodegradation
  • Dissolution and precipitation
  • Microbial catalysis and growth
  • Effective graphical presentation
  • Creating animation and video

The topics will be illustrated through a series of case studies.

More information? Contact workshop support. Can't come? Consider an alternative from our 2020 workshop lineup.

The short presentations and example exercises really showcased what the software can do and provided us with an opportunity to test drive the software.

– George A., Environmental Engineer, USA

The best workshop I've ever participated in. The short theoretical introductions and illustrated exercises helped me learn the software in two days.

– Valeria B., Ben-Gurion University of the Negev

The [Johannesburg] workshop was good and quite informative, I'll be attending the one that you'll hold in Cape Town in 2016.

– Hlanganani Tutu, University of the Witwatersrand


The workshop will be presented by Craig Bethke, Brian Farrell, Qusheng Jin, and Jia Wang. Prof. Bethke is the R.E. Grim Professor emeritus at the University of Illinois. He is the primary author of The Geochemist's Workbench® software package and author of the Geochemical and Biogeochemical Reaction Modeling text, published by Cambridge University Press.

Craig Bethke
Craig Bethke

Craig Bethke has been cited many times for excellence in teaching. He is a Fellow of the American Association for the Advancement of Science and recipient of a number of prizes in hydrogeology and geoscience, including the O.E. Meinzer Award and M.K. Hubbert Award.

Brian Farrell is the lead Geochemist at Aqueous Solutions LLC, makers of The Geochemist's Workbench®. Mr. Farrell is expert in aquifer microbiology, geochemical modeling, and reactive transport in geochemical systems. He has taught short courses in North and South America, Europe, Africa, Asia, and Australasia.

Brian Farrell
Brian Farrell
Qusheng Jin Qusheng Jin
Qusheng Jin is a professor of Earth Science at the University of Oregon. Qusheng leverages his mechanistic understanding of biological processes to develop new modeling theories and methods, and to apply them to natural and contaminated environments. Cited for his University teaching accomplishments, Qusheng is an experienced workshop instructor.

Jia Wang is an aqueous and isotope geochemist and a reactive transport modeler with special expertise in weathering and the critical zone. She has many years of experience as an instructor at the undergraduate and graduate levels, and as a noted mentor to less experienced students at the secondary through graduate levels.

Jia Wang
Jia Wang


Workshop locations will be assigned by the Goldschmidt Conference in early 2020; please watch this space for details.

Please come to the workshop with the software installed and activated on a laptop computer running Windows. Plan to arrive on time so that we may start each day at 8:30 am sharp.

The workshop runs until 5:00 pm on the first day, and we will wrap up the second day in time to attend the Icebreaker Welcome Reception.


Register Now

Space is limited, so sign up early. You may join the workshop when you register for Goldschmidt 2020, or you may sign up directly with the workshop organizers.

The workshop fee is only US$100 when you attend as part of the conference, which is the least expensive way to take part. To take advantage of the Conference's early registration discount, be sure to sign up by April 21. Please note the Goldschmidt Conference cuts off registration for all workshops on May 21.

Alternatively, you may register directly with the workshop organizers, without attending the meeting, at the undiscounted price. In this case, the workshop fee is US$599 until April 21, or $699 after that date. Full-time students currently enrolled in a university degree program can register at the reduced rate of US$499, or $599 after April 21. Please bring current student identification to the workshop.

We are pleased to welcome back participants from our previous workshops at a special discount when registering directly. For fastest verification, please sign up with the email address you used registering for the earlier course.

However you register, the workshop fee includes all course materials, coffee breaks, and lunch each day. Each registered participant will receive a free 60-day license to The Geochemist's Workbench® Professional version. We will ask you to bring to the course a laptop running Windows, with the software installed and activated.

Fees paid through the Goldschmidt are subject to Conference policies. A registration made with the workshop organizers may be transfered to another participant at no charge, and is fully refundable until 30 days before the workshop. In either case, liability in the event of workshop cancellation or other eventuality is limited to refund of the registration fee.


The Goldschmidt Conference maintains a list of discounted accommodations available to workshop participants. Please visit their accommodation page for current information.

Hosts and sponsors

The workshop is being held thanks to the generous efforts of our hosts and sponsors:

The Geochemist's Workbench Goldschmidt 2020 Aqueous Solutions