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Switchgrass (Panicum virgatum L.) is a promising bioenergy feedstock because it can be grown on marginal land and produces abundant biomass. Recalcitrance of the lignocellulosic components of the switchgrass cell wall to enzymatic degradation into simple sugars impedes efficient biofuel production. We previously demonstrated that overexpression …
The cost to mow, bale, transport and process switchgrass was $2,345 per poultry house (spread at 3" depth of bedding) compared to $2,750 for pine shavings, a 15% savings. An average size poultry house (about 20,000ft2) required 13.4 tons of switchgrass. At 3 tons of switchgrass per acre, this meant that each poultry house bedded with ...
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A Vermeer TG5000 tub grinder (Vermeer Corporation, Pella, IA, USA) was utilized to unpack and grind the switchgrass in January 2012. Once the biomass was ground, the next step was to sample the moisture content and the chemical composition; the measures for the chemical composition were obtained with a near-infrared (NIR) technology.
Switchgrass tillers were collected at the R1 developmental stage from triplicate greenhouse-grown plants and air dried for 3 weeks at room temperature before grinding to 1 mm (20 mesh) particle size. Sugar release efficiency was determined via NREL high-throughput sugar release assays on pretreated extractives- and starch-free samples [ 31, 32 ].
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The FerIN switchgrass improved by 15% in height and 65% in yield, whereas the FerIN/IBPex transgenics showed enhancement up to 30% in height and 115% in yield. The FerIN and FerIN/IBPex switchgrass had 27% and 51% higher in planta iron accumulation than the empty vector (EV) control, respectively, under normal growth conditions.
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and 2.8 mm screen sizes for hammer mill grinding of switchgrass. Mani et al. (2002, 2004a) found that switchgrass had the highest specific energy requirement (27.6 kWh/Mg) to grind
Direct mechanical energy measures of hammer mill comminution of switchgrass, wheat straw, and corn stover and analysis of their particle size distributions. Download. Related Papers. Comminution Properties of Biomass in Hammer Mill and its Particle Size Characterization. By Nehru Chevanan.
The grinding system will reportedly be used to manufacture transmission parts for the carmaker's electric vehicle (EV) product line. GCH Machinery redesigned and repurposed the automaker's older dual-head grinder to the latest technology; in addition, the redesign was aimed at fulfilling the automaker's green initiative.
Switchgrass plants were grown for about four months after re-potting and the leaf adjacent to the second node from the base of vegetative tillers at an early elongation stage (three tillers per plant) was sampled. Both sugarcane and switchgrass samples were collected between midday and 1 pm on a sunny day and snap frozen in liquid nitrogen.
The first switchgrass harvest this fall is expected to yield 2 dry tons per acre, which is about one-third of its full potential of 7 dry tons per acre. Harvesting and storage methods are being studied this winter, comparing square and round bales that are both tarped and left uncovered, as well as being set on the ground, on gravel and on pallets.
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This study analyzes the effects of N fertilizer application rates on profitability of growing switchgrass and using the feedstock in a pyrolysis biorefinery facility to create a source of sustainable aviation fuel (SAF) supply in Tennessee. Switchgrass (Panicum virgatum L.) is a perennial bunchgrass native to North America with traits suitable for biofuel and co-product …
Before the second stage grinding process, pine residues are predried to 30% (wb) using a rotary drum dryer. For switchgrass, the first stage uses the bale grinder at the depot to reduce feedstock to 152 mm particles. For both feedstocks, the second stage grinding uses the hammer mill to reduce the size to 2.5–3.8 mm.
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these goals were met. The design target for the switchgrass handling system was 12.5 ton/h (11.3 tonne/h), which we exceeded after a redesign of the secondary grinder in our system. We had hoped to burn over 3,000 tons (2,722 tonnes) of switchgrass during this first round of testing,
A hammer mill (New Holland grinder model 358, New Holland, PA.) with 3.175-mm (1/8 in.) sieve size was used for particle size reduction. Particles from switchgrass were collected and oven-dried at 105 °C for 12 h and kept in a …
Supply logistics systems for corn (Zea mays L.) stover and switchgrass (Panicum virgatum L.) with two collection methods, round bales and rectangular bales, are developed. A location in the US Midwest is assumed with corn grown on highly productive crop land and switchgrass grown on less productive land. Bales (15 % moisture wet basis) are stored at …
Although manufacturers typically provide performance parameters for augers while horizontally conveying grain or sand at low speeds, data for augering lignocellulosic feedstock particles are …
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Background Switchgrass (Panicum virgatum L.) is a prime candidate crop for biofuel feedstock production in the United States. As it is a self-incompatible polyploid perennial species, breeding elite and stable switchgrass cultivars with traditional breeding methods is very challenging. Translational genomics may contribute significantly to the genetic improvement of …
Lignin content of switchgrass (Panicum virgatum L.), a bioenergy species, is a critical determinant of biomass quality since it can negatively impact conversion of biomass into liquid fuels via biochemical platforms. Cinnamyl alcohol dehydrogenase (CAD) is a key enzyme in lignin biosynthesis. Here, we have shown that cv. Kanlow switchgrass contains at least two …
1. 1-8. (canceled) 9. A gel, lotion, cream or ointment composition suitable for topical administration comprising microalgal exopolysaccharide particles, the exopolysaccharide produced by microalgae of the genus Parachlorella, wherein the exopolysaccharide particles are made by: culturing microalgae cells in a culture medium so that exopolysaccharide is secreted …
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