Reverse Osmosis 101+

Ohio Maple Days 2022 did not disappoint.  The food was fantastic, the vendor room crowded, and the presenters shared a wealth of knowledge of expertise across a wide range of subjects.  Joel Oelke, Regional Sales Manager with Leader Evaporator/H2O Innovation, shared an encyclopedic wealth of knowledge regarding reverse osmosis leading up to the lunch hour.  Before we get into a few highlights, be sure to mark your calendars for next year’s conference December 8th and 9th!

At its simplest, reverse osmosis is a process by which sap is passed through a membrane to remove water thereby concentrating sugar.  The pure water pulled out of the sap is referred to as permeate.  The increasingly sugary solution – concentrate.  The benefits are obvious – it saves space on numerous fronts and greatly improves efficiency at the evaporator by reducing time, fuel, and labor.  While the list of pros is long, suffice it to say – reverse osmosis is one of the biggest technological revolutions the maple industry has experienced in the last 100 years.

While reverse osmosis is a true game changer for maple producers, the technology is also one of the most complex and expensive pieces of equipment in the sugarhouse.  It is easy to become intimidated by what’s necessary to implement and maintain a unit, and mistakes chalked up to the “school of hard knocks” can be expensive.  Here are just 5 rules of thumb that I pulled from Joel’s presentation to share in this article.

#1 – RO’s efficiency rating (how many gallons can a unit process per hour) is given at a solution temperature of 55 degrees Fahrenheit.  Because sap is kept at cooler temperatures to ensure syrup quality, you need to factor the lower temperature into your unit’s efficiency rating.  This is especially important to consider if you are shopping for a new RO unit.  Here’s a simple figure to calibrate your RO’s operating efficiency.  If you purchase a unit rated at 600 gallons per hour but expect to run sap at an average temperature of 40 F, you can multiply 600 by an efficiency downgrade of 0.75 (or 75%) and expect a 450 gallon per hour operating rate.

#2 – A second factor influencing RO efficiency is the concentrate level you are trying to achieve assuming you start around 2 Brix.  The more you want to concentrate your sap, the less efficient your unit will be.  Let’s continue with the example we started above in italics.  If you want to take 2% sap to 8% concentrate, your RO unit will run at the temperature-corrected peak of efficiency and achieve your calibrated 450 gallons per hour rate.  However, if you concentrated to something higher, say a 12% level, your operation would get dinged with an additional 30% loss in efficiency.  Here’s what the math would reveal – 450 gallons per hour multiplied by 0.70 = 315 gallons per hour.  Below is another figure to help you calculate the efficiency factor of concentration.  Remember, you must factor in both penalties – sap temperature and concentrate level – to properly estimate your efficiency rating.  And this all assumes you are running a clean, properly-maintained RO unit!

#3 – The desugaring, rinsing, and washing cycles are what keep your expensive reverse osmosis investment operating at the peak of performance.  Long story short – each cycle is critical to maintaining your unit.  And do not – especially in the wash cycle – generalize across all RO units.  Specific models and manufacturers use different membranes which are tailored to different types of soaps and chemicals as well as amounts of each.  Consulting the manuals and consulting with your RO manufacturer reps – just like Joel – is best practice for getting maximum life and performance out of your reverse osmosis technology.

#4 – Don’t let your improved efficiency get you in to trouble.  What I mean is this – sap that goes through a reverse osmosis unit comes out as warmer concentrate.  So, A) the process of reverse osmosis physically warms the concentrate above the temperature that it went in the machine, and B) you aren’t concentrating just sugar with an RO unit, you are concentrating everything – including microbes and bacteria.  The warmer concentrate coupled with a denser community of “nasties” can get a producer in big trouble if the evaporator is not synced up in work flow and their facility can not properly keep concentrate cool.  Stopping short of laying out any specific recommendations for how to integrate and streamline your sugarhouse sap-to-syrup processing, just know that the clock is ticking extra fast once you start concentrating sap.

#5 – If you properly size, run, and maintain an reverse osmosis unit, you can expect roughly a 3-year payback on your purchase when accounting for saved fuel and labor.  A rough cost estimator predicted a $4 cost savings per finished gallon of syrup using fuel oil in a 110 gallon per hour evaporator.  Obviously there a lot of moving parts for each unique scenario, but the bottom line is this asset does not 10 years to recoup costs.

Hopefully these quick 5 points help you make sense of reverse osmosis and how you might consider incorporating or upgrading an RO unit in your sugaring operation.  Thanks for an extremely informative talk Joel!

Ohio Maple Days & Workshop Registration DEADLINE Approaching

Registration is sneaking up for the Friday & Saturday festivities surrounding Ohio Maple Days.

In order of their occurrence, Mark Cannella is hosting a maple business workshop representing by University of Vermont on Friday, December 9th.  Mark is offering this half day workshop with a focus on strategic planning, marketing and managing finances toward profitability.  Participants are encouraged to bring any business records and information of their own to apply during the workshop.  There are 4 SAF category 1 continuing education credits offered for the day.  Space is limited and seats are running out – register now!

Friday evening, you do not want to miss out on the One Sweet Gathering fundraising banquet thrown by the Ohio Maple Producers Association.  Register here!

And of course the main event on December 10th, Saturday for Ohio Maple Days.  We will meet again at Ashland University’s John C. Meyer Convocation Center for a jam-packed program on all things maple.  Updates on red maple research from both Ohio State’s Gabe Karns and the University of Vermont’s Proctor Maple Research Center’s Abby van den Berg.  Add to this other talks on reverse osmosis, marketing and insects impacting maple trees.  A maple themed lunch and a vendor room that features a variety of maple equipment dealers, consulting foresters and other associated equipment help round out the day.  There are also SAF continuing education credits available for the program.  Registration here.

 

 

Ohio Maple Days 2022 Registration Live

Please join us on December 9th and 10th for a great line-up of workshops, socials, and seminars at this year’s Ohio Maple Days.  Registration is available at the Woodland Stewards website.  Saturday has a packed agenda of research talks, seminars, vendor displays, and down time to enjoy meals engaging with fellow maple enthusiasts.

Preceding Saturday, Friday will feature a half-day business planning workshop with Dr. Mark Cannella (ad below) followed by a banquet and social with maple-themed entrees, drinks, and cocktails galore (buy tickets here!).  Registration for each event is separate, so don’t miss out a great 2-day package of maple education and fun.

December Ohio Maple Days & Grading Workshop

Don’t forget to register for the Ohio Maple Days meeting scheduled for December 11 in Ashland.  We have a limited number of seats, so don’t delay too much in getting in those registrations.

We are also excited to host a syrup grading workshop on Friday, December 10th.  Please consider making a couple days of it to participate in both the workshop and the main event on Saturday.  Registration for the syrup grading workshop is on the Woodland Stewards website.

See you there!

Registration LIVE for Ohio Maple Days, December 11th

REGISTER NOW!!!

Join us Saturday, December 11th for a day of all things maple!  We will highlight research from Ohio State’s two ACER research grants and introduce you to some of our research partners from West Virginia and Pennsylvania.  Spotted lanternfly is now in Ohio so learn its impacts and how producers can help.  We will also talk about how to improve your public events at the sugarbush, and a presentation on a new opportunity for selling bulk syrup.  The program runs from 9:00 AM to 4:00 PM with registration opening at 8:30.

The full slate of presentations is as follows:

Ohio’s ACER Grants
Ohio Maple Producer Survey – Sayeed Mehmood, Ohio State University
Reds, Silvers, Rilvers and Sugars – Gabe Karns, Ohio State University,

Spotted Lanternfly in Ohio: How Maple Producers Can Help – Amy Stone, OSU Extension

Forest Management Planning – Kathy Smith, Ohio State University

Is Agritourism in Your Future? – Rob Leeds, Ohio State University Extension

Authentic Appalachia – Mike Rechlin, Future Generations University

Tapping Red Maple – Abby van den Berg, University of Vermont, Proctor Maple Research Center

Maple Programming Survey – Please Participate!

Last week, we shared the exciting news that Ohio Maple Days will be making its IN-PERSON return on December 11th in Ashland, OH.

Ohio Maple Days Save the Date Flyer – December 11, 2021

This week, we want to invite you to participate in a survey to help inform statewide maple programming into the future.  By ranking your interest level across different maple-related topics and providing specific content ideas, we plan to use survey feedback to mold and shape high quality maple programming at Ohio Maple Days and other events – outreach and education that is most useful and most valuable to maple producers throughout the Buckeye State.

Click here to participate anonymously in the survey.

Ohio Maple Days Announcements

We are excited to announce that Ohio Maple Days will be returning IN-PERSON on December 11th after a necessary virtual COVID-19 interruption earlier in January.  Mark your calendars for December 11th in Ashland, Ohio, and get ready to rendezvous with maple producers from around the state to hear great talks from excellent speakers, browse a selection of maple vendors, and reconnect face-to-face with your maple community.

Switching Ohio Maple Days to a one-day main event and moving from January to early December is not exactly going back to the way things were pre-pandemic, but the decisions were collectively made after much discussion between Gary Graham, the Ohio Maple Producers Association board, and the rest of the Ohio State maple team.

Please read the following letter from Gary Graham expressing his delight in the 2+ decades of organizing Ohio Maple Days, and his optimism for the future of Ohio Maple Days moving forward.

Stay tuned for registration details in the next month or two.  Check back next week to participate in a survey that solicits your topic preference for maple programming at Ohio Maple Days and other events in the future.

Ohio Maple Days 2021 Presentations AVAILABLE

Despite being virtual due to COVID-19, 2021 Ohio Maple Days – or more accurately Ohio Maple Day sans the “s” – was a success.  The audience, two hundred or so strong, heard presentations on tapping and updates from our ACER grants in addition to how production might be increased with red maple.  A big thanks to this year’s speakers and an extra round of applause for the committee who worked hard on an event that looked quite a bit different than in years past.  One silver lining to having a virtual event is that the sessions are easily recorded.

Visit the Ohio Woodland Stewards Maple page and scroll to the bottom of that webpage to access the different presentations.  Let us know what you think and send us any questions, comments, concerns, or suggestions to talk topics for next year!

REGISTER NOW: Ohio Maple Days 48 Hours Away!!

Just a friendly reminder to register for Friday’s 2021 Ohio Maple Days event.  Ohio Maple Days will look different than in year’s past with remote presentations to a Zoom audience.  But one thing has not nor will ever change – the high quality content you have come to expect from Ohio’s signature education event for the Buckeye State’s maple producers.

Hope to see you there!

2021 Ohio Maple Days – Virtual Event Announcement

Join us for the virtual version of Ohio Maple Days on Friday, January 15th!  Due to COVID-19 restrictions Ohio Maple Days will take place all on one day and be offered virtually.  The event will be recorded and available afterwards for viewing.  For questions contact Dr. Gary Graham (email: graham.124@osu.edu).

The registration link and more details about the agenda can be found here.  We hope to see you there!