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Keyword: pyrolysis

Measurement of pyrolysis products from mixed fuel beds during fires in a wind tunnel

Publications Posted on: December 14, 2018
Pyrolysis of intact wildland fuels in the southern United States is being measured at bench, wind tunnel, and field scales as part of a larger research project to measure and model pyrolysis of wildland fuels to improve models used to predict prescribed fire behavior. Traditional pyrolysis experiments typically use dried, ground samples in either an inert or oxidizing environment subject to uniform heating and heat transfer.

A project to measure and model pyrolysis to improve prediction of prescribed fire behavior

Publications Posted on: November 29, 2018
Laboratory and field experiments focused on pyrolysis and ignition coupled with sufficient description of fuel characteristics and physics-based modeling are being used to improve our understanding of combustion processes in mixed (heterogeneous) fuel beds managed with prescribed fire in the southern United States.

Financial viability of biofuel and biochar production from forest biomass in the face of market price volatility and uncertainty

Publications Posted on: October 03, 2018
A comparative techno-economic analysis of two different thermochemical biomass conversion pathways was conducted to examine the effects of fuel price and other variables on project financial performance.

Producing biochar from forest biomass

Science Spotlights Posted on: October 07, 2015
Forests in the West are overgrown and vulnerable to catastrophic wildfires and attacks by insects and disease. Drought and conditions associated with climate change exacerbate the problem and further contribute to deteriorating forest health. The use of woody biomass to produce value-added products, especially from residual materials of biomass removal and wood processing, enhances the feasibility of biomass removal and thus forest treatment projects. An important outcome of biochar research is the dialogue it has fostered among researchers, industry, and communities.

Growing native plants with biochar

Projects Posted on: April 16, 2015
Rocky Mountain Research Station scientists and their partners are evaluating biochar as a seed coating and as an amendment to nursery substrates to improve germination and growth of native plants. The goal is to reduce costs associated with restoring ecosystems.

Tucker RNG: Little machine, big impact

Publications Posted on: August 27, 2014
When the Tucker RNG thermal conversion unit connected to the power grid for the first time April 23 in Charlotte, N.C., Richard Tucker, president of Tucker Engineering Associates, could feel the weight of the world coming off his shoulders. After more than a decade of developing his high-temperature, fast pyrolysis system, he was finally seeing it export electricity for the first time.

Productivity and cost analysis of a mobile pyrolysis system deployed to convert mill residues into biochar

Publications Posted on: September 26, 2013
Forest and mill residues are a promising source of biomass feedstock for the production of bioenergy, biofuels and bioproducts. However, high costs of transportation and handling of feedstock often make utilization of forest residues, such as logging slash, financially unviable. As a result, these materials are often considered waste and left on site to decompose or pile-burned to reduce wildfire risk and open space for regeneration.

Growth of Norway spruce seedlings after transplanting into silty soil amended with biochar: A bioassay in a growth chamber

Publications Posted on: April 02, 2013
Biochar (BC), the carbon-rich by-product resulting from pyrolysis of biomass, is used for bioenergy and increasingly as a soil additive for carbon sequestration and soil improvement. However, information about the effects of BC on forest productivity and reforestation success, especially on boreal and temperate forest soils, is scant.

A comparison of producer gas, biochar, and activated carbon from two distributed scale thermochemical conversion systems used to process forest biomass

Publications Posted on: February 06, 2013
Thermochemical biomass conversion systems have the potential to produce heat, power, fuels and other products from forest biomass at distributed scales that meet the needs of some forest industry facilities. However, many of these systems have not been deployed in this sector and the products they produce from forest biomass have not been adequately described or characterized with regards to chemical properties, possible uses, and markets.

Pelleted biochar: chemical and physical properties show potential use as a substrate in container nurseries

Publications Posted on: April 04, 2011
We found that peat moss, amended with various ratios of pellets comprised of equal proportions of biochar and wood flour, generally had chemical and physical properties suitable for service as a substrate during nursery production of plants.