A Closed Loop Solution To Clean Biogas

A new paper published in Science Direct and co-authored by Regenis’ Director of Research and Technology, Dr. Craig Frear, shows promising results on using post-digested dairy fiber as the primary feedstock to clean biogas and to remove odors in animal waste.

The study, funded through the USDA, demonstrated when animal waste run through an anaerobic digester is exposed to the chemical process of pyrolysis at high temperatures over a sustained period of time, it creates a natural, charcoal-like substrate called biochar, which can then be used to clean the hydrogen sulfide in biogas so it can meet the standards for a clean transportation fuel like CNG.

Additionally, once it has scrubbed the hydrogen sulfide, the spent biochar is rich in soil nutrients like carbon and sulfur, giving dairies the option of applying it to their fields to increase the organic content of their soil or creating another revenue source by selling the environmentally friendly substrate to help farmers and gardeners create a pH balanced soil full of nutrients which improves water and oxygen retention.

Download the entire article: Charcoal from Anaerobically Digested Dairy Fiber for Removal of Hydrogen Sulfide Within Biogas

 

 

Happy Holidays From Regenis!

Thanks to everyone for a groundbreaking 2017, and we look forward to working together next year to reimagine our reusable resources.

BioCycle REFOR17

The annual BioCycle REFOR conference was held in Portland last week, drawing anaerobic digestion, compost and sustainability partners to the Red Lion Conference Center in Portland OR. The annual event is co-sponsored by BioCycle Magazine and the American Biogas Council (ABC).

Regenis was in full-force at the event, with Eric Powell, Director of Project Development, manning our booth in the Vendor’s Pavilion and Craig Frear, Director of Research and Technology, serving both as panelist to two key events and presenter at two break-out research development sessions.

Because of Regenis’ unique capabilities in designing, constructing, operating and maintaining digester and nutrient recovery systems, Eric had significant interest at the table from existing and future project developers in need of experience with organics as well as renewable natural gas (RNG) projects, which are a viable alternative use for captured methane gas in anaerobic digesters.

Craig, in his capacity as an ABC Board Member, was co-host to roughly 80 pre-conference attendees in a workshop to spearhead cohesion between the fields of anaerobic digestion and composting.

On the final day of the conference, Craig presented data with Tera Lewandowski from Scotts Miracle-Gro on a research and development partnership aimed at utilizing digested dairy fiber in Miracle-Gro formulations. Additionally, Craig presented the latest data co-collected by Washington State University (WSU) and Regenis of the company’s recently installed fine solids separation unit, which recovers 85 percent of the phosphorous in dairy manure wastewater and 40 percent of the nitrogen, giving dairies another tool to create a closed-loop, sustainable farm while generating another stream of revenue through the creation of nutrient-rich organic fertilizers.

REFOR17 had attendees from 37 states and numerous international countries—including a group from Guatemala, who toured some of Regenis’ Washington state installations after the close of the conference. With such enthusiasm to reimagine reusable resources among this year’s gathering, the Regenis team is already looking forward to the 2018 event.

Regenis Installs Fine Solids Separation System In Western Washington

Washington State’s watersheds scored a win this week as agricultural waste company, Regenis, installed the first phosphorous recovery system west of the Cascades at Edaleen Dairy in Lynden.

This fine solids separation system, called a Dissolved Air Floatation (DAF) unit, removes solids in manure wastewater through a system that injects the tank with air bubbles and organic polymer, causing the solids to float to the surface where they can be skimmed off, dewatered, and stored. (more…)