BY MARY PEREZ
Largest wood pellet manufacturer in the U.S. is proposing to build the world’s largest wood pellet mill in Lucedale, Mississippi in George County. Some residents are for it, others question environmental impact.
Residents of Lucedale who showed up in force to a public hearing Tuesday already made up their minds about the largest wood pellet mill in the country locating in their town.
They wore stickers announcing their position. And they weren’t swayed by speakers who came mostly from outside the area, arguing that while Enviva might be good for the bottom line, it might not be good for the health of the community.
The company proposes building a $140 million pellet plant in the George County Industrial Park in Lucedale and a $60 million shipping terminal in Pascagoula. The state Legislature appropriated more than $2 million to fix the rail spur between the two.
The pellets will be made mostly from pine trees in and around George County and shipped overseas to supply fuel for power plants in the United Kingdom, Asia and other countries.
Tuesday’s meeting was the last step in the review process before the Mississippi Department of Environmental Quality decides whether to approve the pollution control equipment so the plant can operate within the legal limits of Mississippi. The decision could come as early as the June 11 meeting of the MDEQ review board, which meets the second Tuesday of each month.
By Molly Priddy
The U.S. timber industry scored a win on April 9 in the decades-long battle with Canada over softwood lumber, after the World Trade Organization ruled in its favor.
On April 9, the WTO decided that the United States Department of Commerce had done the correct calculations when it determined anti-dumping duties on Canadian softwood lumber.
“It’s a victory for the United States and the forest products industry,” said Chuck Roady, general manager of F.H. Stoltze Land and Lumber, as well as the president of the Montana Wood Products Association. “It was great to see an excellent decision on our part, because the U.S. rarely prevails in the WTO.”
Softwood lumber has been the subject of an enduring trade dispute between the two countries, and the most recent Softwood Lumber Agreement (SLA) lapsed in 2016 after 10 years.
The roots of the dispute come down to two different forms of government having two different methods of lumber harvest. Canada’s provincial government owns the majority of timberlands that provide trees to Canadian producers, charging an administered fee. In the U.S., the timberlands are typically privately owned, and the market determines the price of those logs through public sales.
“Both systems work until you sell the lumber in the United States,” Roady said.
In November 2017, the U.S. Commerce Department determined that Canadian exporters had sold lumber in the U.S. for 3.2 percent to 8.9 percent under fair market value, and that Canada is subsidizing softwood lumber producers at rates of 3.34 percent to 18.19 percent. The department determined that Canadian lumber producers should then pay a combined tariff of 20.83 percent.
In its mixed ruling on April 9, the WTO determined that the U.S. use of “zeroing” to calculate the anti-dumping duties is not prohibited. In the past, the organization had ruled against the methodology.
The ruling also determined that the U.S. had violated international trade rules when it calculated the tariffs on softwood lumber imports, which Canada applauded.
Wood may seem more at home in log cabins than modern architecture, but a specially treated type of timber could be tomorrow’s trendy building material. Today, scientists report a new kind of transparent wood that not only transmits light, but also absorbs and releases heat, potentially saving on energy costs. The material can bear heavy loads and is biodegradable, opening the door for its eventual use in eco-friendly homes and other buildings.
“Back in 2016, we showed that transparent wood has excellent thermal-insulating properties compared with glass, combined with high optical transmittance,” says Céline Montanari, a Ph.D. student who is presenting the research at the meeting. “In this work, we tried to reduce the building energy consumption even more by incorporating a material that can absorb, store and release heat.”
As economic development progresses worldwide, energy consumption has soared. Much of this energy is used to light, heat and cool homes, offices and other buildings. Glass windows can transmit light, helping to brighten and heat homes, but they don’t store energy for use when the sun goes down.
Three years ago, lead investigator Lars Berglund, Ph.D., and colleagues at KTH Royal Institute of Technology in Stockholm, Sweden, reported an optically transparent wood in the ACS journal Biomacromolecules. The researchers made the material by removing a light-absorbing component called lignin from the cell walls of balsa wood. To reduce light scattering, they incorporated acrylic into the porous wood scaffold. The team could see through the material, yet it was hazy enough to provide privacy if used as a major building material. The transparent wood also had favorable mechanical properties, enabling it to bear heavy loads.
Building on this work, Montanari and Berglund added a polymer called polyethylene glycol (PEG) to the de-lignified wood. “We chose PEG because of its ability to store heat, but also because of its high affinity for wood,” Montanari says. “In Stockholm, there’s a really old ship called Vasa, and the scientists used PEG to stabilize the wood. So we knew that PEG can go really deep into the wood cells.”
Known as a “phase-change material,” PEG is a solid that melts at a temperature of 80 F, storing energy in the process. The melting temperature can be adjusted by using different types of PEGs. “During a sunny day, the material will absorb heat before it reaches the indoor space, and the indoors will be cooler than outside,” Montanari explains. “And at night, the reverse occurs — the PEG becomes solid and releases heat indoors so that you can maintain a constant temperature in the house.”
By Ian Randall
A fire-retardant structural material can be made by chemically softening and compressing wood to remove the spaces between cell walls. When burnt, the resulting material forms a protective char layer on its outside which helps preserve its internal strength.
The use of wood in structural applications is limited by both its inherent flammability and susceptibility to rapid collapse on burning. Wood can be made more fire-proof by chemical treatments – such as through injections of halogenated flame retardants, or coatings of inorganic nanoparticles – but these approaches are typically either prohibitively expensive, fail environmental and health standards, or result in insufficient structural strength.
Liangbing Hu and colleagues of the University of Maryland in the US show that their process to create bullet-proof wood through densification also confers fire-resistant properties without recourse to potentially toxic or environmentally-unfriendly materials.
The densified material – which Hu dubs ‘super wood’ – is created by first chemically treating timber with sodium hydroxide and sodium sulfite to partially remove its lignin, the organic polymer which makes cell walls rigid. Subsequent hot pressing creates a dense, laminated material free of lumina – the tiny channels that create a porous structure, supplying oxygen and increasing flammability.
AN has mapped the schools, organizations, and manufacturers across the U.S. and Canada that are powering the domestic timber boom.
The timber industry has long thrived on its small-scale, local nature due to the sourcing of its materials as well as the limits on project size set by the building code. With this has come a good deal of fragmentation and disorganization, so we decided to map out the different schools, organizations, and manufacturers that are leading the way in the research and development of mass timber across the United States and Canada.
Is wood pellet-based electricity less carbon-intensive than coal-based electricity? It depends on perspectives, baselines, feedstocks, and forest management practices
P Dwivedi, M Khanna, and Madisen Fuller
Some studies suggest that the carbon intensity of electricity generated in the United Kingdom by using imported wood pellets from the southern United States is higher than that of coal-based electricity, whereas other studies suggest that the use of wood pellet-based electricity reduces carbon emissions significantly, relative to coal-based electricity. We developed the Forest Bioenergy Carbon Accounting Model (ForBioCAM 1.0) to analyze factors that influence the carbon intensity of wood pellet-based electricity, using a common set of assumptions and the same system boundary. We show that widely differing assessments of the carbon intensity of wood pellet-based electricity depend on the choice of forest management perspectives (landscape or stand), baselines (no harvest, or harvesting for the manufacture of traditional finished wood products), feedstocks (whole trees, pulpwood, or logging residues), forest management practices (change in rotation age), and the duration of the analysis itself. Unlike with a stand perspective, we demonstrate conditions under which a landscape perspective results in carbon savings net of avoided emissions from coal-based electricity. Our results also suggest that the two perspectives of forest management converge in their assessment of the positive carbon effects of various feedstock types used to manufacture wood pellets relative to a no-harvest baseline, and that the use of whole trees for wood pellets results in net carbon savings after a break-even period of about three years relative to a no-harvest scenario. The results of this study can guide future policy deliberations on the use of wood pellets as a renewable energy source worldwide.
By Andrew Moore
The tiny rod-like structures have been shown to improve the strength and durability of concrete structures and reduce the carbon footprint of manufacturing cement.
If you were to walk through downtown Greenville, you would likely notice several landmarks, including the Liberty Bridge and the old county courthouse.
While these iconic structures are unique in their own right, they share one commonality: They’re made of concrete. The coarse, gray material is the very foundation of modern infrastructure. It’s been used in the construction of everything from buildings and bridges to roads and sidewalks.
But despite all its benefits of strength and durability, there’s a major downside to using concrete.
The production of cement, which when mixed with water forms the binding agent in concrete, accounts for 5 to 10 percent of all human-caused carbon dioxide emissions, according to the International Energy Agency. These emissions have been on the rise since the industrial revolution and remain the leading cause of global warming.
Over the past decade, though, researchers from across the country have been working together to create a cleaner version of the versatile building material. And now they plan to test the capabilities of their environmentally friendly alternative in Greenville.
The U.S. Endowment for Forestry and Communities, a Greenville-based environmental nonprofit, has partnered with the U.S. Forest Service, Oregon State University, and Purdue University to study a concrete mixture infused with cellulosic nanomaterials.
Cellulosic nanomaterials are produced by breaking down wood to its smallest, strongest components through mechanical and chemical processes similar to making paper. These tiny rodlike structures have diameters 20,000 times smaller than the width of a human hair and can be seen only using an electron microscope, yet they are as strong as steel with only one-fifth the weight.
“Researchers are testing these cellulosic nanomaterials in a wide range of applications from substrate for computer chips, they don’t warp under heat like plastics do, to car and airplane bodies, lighter and stronger than steel,” said Dr. Alan Rudie, a chemist with the U.S. Forest Service’s Forest Products Laboratory in Wisconsin, in a news release. “Our team expects that concrete will be among the first commercial applications.”
By Pranjal Mehar
A key finding of the study is that positive climate change mitigation effects can be gained only if efforts are made to use more wood for long-lived wood products.
A new study by the University of Eastern Finland has suggested that the way we use wood mitigate climate change. It also supports the economy.
Forests assume a vital job in the worldwide carbon cycle and add to climate change mitigation. Forests ingest carbon from the environment through photosynthesis and store the carbon in living biomass, dead wood, litter and soil.
When wood is collected, a lot of carbon is expelled from the Forest and would then be able to be put away for a considerable length of time in enduring wood items, for example, wooden houses and furniture. Up until this point, numerous examinations have concentrated on carbon put away in Forest, yet fewer investigations have concentrated on the job of wood items.
A new study intends to fill this gap in knowledge. The study analyzed and applied various methods and models in order to estimate the effects of wood use effects on climate change mitigation and to reveal the environmental, economic and even social effects of wood use.
The examination followed the streams of wood in Lithuania and the Czech Republic beginning from the forest through the wood handling industry until the point when the end products, with an accentuation on carbon conventional and atmosphere moderation impacts.
The outcomes demonstrate that traditional carbon bookkeeping strategies for reap wood items may prompt a huge underestimation of the carbon put away in wood items. The examination discovered that in a few nations, the yearly carbon spending plan in wood items is 40% higher when ascertained with a more definite technique.
By George Plaven
Timm Locke relishes a chance to drive around Portland and showcase the latest commercial buildings made with mass timber, a construction material that uses wood beams and panels instead of concrete and steel.
First stop: Albina Yard, a four-story office building that opened in 2016 featuring cross-laminated timber panels from D.R. Johnson, a lumber company south of Roseburg.
Every piece of cross-laminated timber — or CLT for short — is prefabricated, designed for a specific part of the building, said Locke, director of forest products at the Oregon Forest Resources Institute. That means buildings go up faster, with fewer workers.
Wood is also environmentally superior to steel and concrete, Locke said, because it sequesters carbon and takes less energy to produce.
“There are so many benefits, it doesn’t matter which one you choose to start with,” Locke said.
First developed in Europe, mass timber is now catching on in the U.S., and Oregon is working to position itself as the industry hub, kick-starting rural economies that have traditionally relied on forest products. On Aug. 1, Oregon became the first state to approve language in its building codes allowing for wood-framed buildings up to 18 stories tall.
BY ADELE PETERS
Spinnova has found a way to spin any cellulose–wood, potato peels, even old T-shirts–into new, strong fiber.
In a new pilot factory in Jyväskylä, Finland–a city surrounded by forests and known in part for its lumber and paper industries–a startup will soon begin to turn wood pulp into something new: a type of fabric that could eventually compete with cotton.
Making wood into fabric isn’t new, but older wood-based fabrics like rayon use harsh chemicals that can pollute water and poison workers. The new fabric, made by a startup called Spinnova, uses a mechanical process instead of chemicals; the only byproduct is evaporated water, which is reused in production. Unlike cotton, which uses massive amounts of water in areas often prone to droughts, it needs little water, no pesticides, and no farmland.
The new process uses FSC-certified wood pulp that’s ground into a gel-like material called microfibrillated cellulose, which is made of tiny fibers. The material flows through the startup’s patented machinery to create a network of fibers that are spun and dried into a fluffy, firm wool that can be knit or woven into fabric and then made into clothing, shoes, or other textiles.