October 31, 2009
EDMONTON, AB, Oct. 31, 2009/ Troy Media/ — As combines mowed farmers’ fields across Canadian prairies this fall, there was a scene near Edmonton right out of a time warp: – a crew of workers actually using their hands to harvest plants.
The workers were taking down three-metre-tall hemp plants at a breeding nursery outside of Vegreville, AB. The plants, which dwarfed the workers, were being bundled, numbered, bagged and transported to researchers, who see a high-tech future for the ancient plant.
The Alberta Research Council (ARC) is working to help hemp find its way into everything from homes to cars to clothes. It’s part of a campaign to see our agriculture and forestry industries compete in the global push for sustainable products.
“ARC is evaluating hemp as a fibre crop for mature, large-scale industries looking for green products,” ARC crop and plant physiologist, Jan Slaski said. “Alberta’s soil and climate are perfectly suited for growing hemp crops.
“We analyze the seed and plant for biomass and fibre yield, as part of the breeding program for creating the perfect industrial hemp,” he added. ARC uses advanced breeding techniques to develop traits such as water- and nitrogen-use efficiency, with no useable trace of the psychoactive compound THC, which is found in marijuana. It is hoped the breeding program will ultimately lead to a stronger plant with a bigger yield.
In ARC’s Edmonton facility, advanced materials program leader John Wolodko picked up a boat part made from material pressed from hemp and plastic. “This is traditionally made from fiberglass,” he said. “Products made from biocomposites work as well as those made from conventional materials, with the advantages of being lighter and less expensive. The ability of environmentally friendly products to compete with non-renewable products like fiberglass makes for a competitive and promising future for the biocomposites industry.”
Slaski and Wolodko are part of ARC’s biofibre development team, the largest of its kind in Canada, offering solutions from “seed to final product.” Hemp is only one aspect of the biofibre program, but its unrivalled fibre and biomass yield make the fast-growing and versatile crop a potential biocomposite superstar. While wheat straw yields about three tonnes of fibre per hectare, hemp weighs in at 10 to 15 tonnes.
Slaski peeled a hemp stalk, held the outer fibre in both hands and yanked with force. The fibre is unrelenting. The peeled outer and inner layers each have different industry potential. Applications for the resilient, long outer (bast) fibre include car parts, textiles, reinforced cement and panel boards for construction. Hemp’s inner core (hurd) fibre, only a half-millimeter long, has recently seen an increase in demand. “It is appealing as an absorbent for the oil and gas industry or bedding for livestock operations, since it has no dust,” Slaski said.
Alberta’s new ally for the agriculture and forestry industries is the Alberta Biomaterials Development Centre (ABDC), a $15-million facility set up by the province to bring advanced products and sustainable solutions to market. “The hemp processing challenge is an example of where ABDC will fill technical gaps in processing biomaterials and business gaps to get products to market faster,” ARC business development manager Richard Gibson said.
ABDC offers access to expertise, test facilities, scale-up equipment, validation prototyping and customer-demonstration support. “Bio-industrial entrepreneurs will be able to test their business cases at ABDC,” Alberta Agriculture program leader and ABDC spokesperson Trevor Kloeck said. “Industry will have access to staff and specialized equipment, such as technology used to separate the different hemp fibres. Then the market applications are endless.”
ABDC’s resources work in tandem with those at ARC to form a bridge between the field and the final product. “We have a patent-pending decortication process. This technology produces 10 to 50 mm-length fibres, for biocomposite products and pulp and paper applications,” says ARC research engineer Laura McIlveen. “ABDC has slightly different technology: a long-line decorticator, which processes one-third-metre-length fibre at one tonne an hour.” Both technologies are available through ABDC for pilot scale market assessments.
Hemp is currently grown in Alberta for the high-quality oil niche market. But the case for using a new and improved strain of hemp for a broad range of products is becoming stronger by the day. “It also makes sense to include hemp in rotation with wheat and canola,” Slaski said, “since it can reduce the spread of disease and increase the life of the fertility of the soil.”
That could mean that scene out of the time warp will vanish, as hemp becomes a lucrative industrial crop, harvested with high-tech machinery to provide solutions for green products.
Channels: Engineering Canada, October 31, 2009