Rainbow Bee Eater’s ECHO2 is an innovative Australian-designed and built system that not only removes and locks away carbon from the atmosphere but also produces a clean, net zero fuel that can replace fossil fuels for heat and/or power generation.

Rainbow Bee Eater is the only company globally to have a proved biochar pyrolysis technology that produces a clean, cool, high-quality syngas & biochar with no chemical clean up required. Pyrolysis refers to the process of thermally degrading organic solids into small, volatile molecules, without reacting with oxygen or other oxidants.

Biochar, a byproduct from pyrolysis has many practical applications, including soil enrichment – it is very stable and is great a locking away carbon. Syngas on the other hand, which refers is the volatile gas fraction from pyrolysis, is a combustible, renewable gas that can be used to displace or reduce the use of fossil fuels including natural gas, diesel, or LPG. Unlike most pyrolysis technologies in the market today that produce hot syngas with tar and other containments that require extensive cleanup, RBE’s ECHO2 produces a clean, cool, high-quality syngas, with no chemical clean up required.

Many existing pyrolysis technologies only use feedstocks that have other uses, and subsequently high-cost and low availability such as woodchips, whereas the ECHO2 is designed to work on low quality biomass wastes such as husks, straws, forestry residues, tomato vines, etc., that are often landfilled or burnt in field, providing carbon drawdown from otherwise unusable stocks. RBE’s ECHO2 is also a proven carbon removal technology with puro.earth, a European exchange for negative carbon certificate trading, with major companies such as Microsoft, Shopify and several other already being involved.

The ECHO2 uses a unique, patented counterflow process, which combines efficiency, simplicity, and performance. Hot syngas from the pyrolysis chamber is fed through the incoming feedstock, which cleans and cools the syngas in a single process. The feedstock is simultaneously heated, minimising heat loss in the system for maximum efficiency.

The condensation from syngas cooling before combustion, creates another byproduct called Wood Vinegar, that has multiple traditional uses in Japan, Thailand and China and is being trailed in Australia for avocado fungi, compositing, as a growth stimulant and many other applications. The ECHO2 is also a modular technology and can be scaled to meet each application, which reduces project and capital risk. This modular design provides more opportunities to use stranded biomass and adapt to behind the meter energy generation opportunities.

This technology has many use cases, including enabling farmers to be paid to harvest their stubble providing a secondary valuable income stream rather than burning them off as is normally done. Additionally, there is great potential for this technology in industries such as building products, asphalt production, land remediation, landscaping and nursery, pet food, etc. RBE was first deployed as a quarter-scale protype in Kalannie, Western Australia, with the first commercial demonstration at Holla Fresh, located in Mt Gambier, South Australia, which has been operating since 2020.