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Showing 1 to 20 of 29 for “"wood chips"”.
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Analysis of shaker unit parameters to separate whole-tree wood chips
The quality of whole-tree wood chips has been the focus of much attention during the past few years because of the increased use of lower grade wood über in pulp production. The need to up-grade the quality has resulted in the use of some form of screening system to separate acceptable wood chips …
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Soil community structure and litter decomposition under irrigated Eucalyptus Globulus in South Western Australia
… enhance biodiversity, and provide timber and wood chips. They are increasingly important because of their role in carbon sequestration (Adolphson, 2000; Anonymous, 2005; Jones et al. , 2005; Kozlowski, 2002; Paul and Polglase, 2004). Recent research has highlighted the connection between …
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A column experiment for groundwater remediation post-mine closure at the Wolverine Mine, Yukon
… with manure, sewage sludge, zero-valent iron, or wood chips and alfalfa. Selenium, sulphate and other parameters of concern were lowered in column effluents, most effectively by the control column and by the columns amended with sewage sludge. Column effluent metal and sulphate concentrations …
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Reflections
… I explore the many different textures of stones, wood chips, tree bark, water ripples, lily pads, birds' feathers, and webbed feet. I find that the reflections on the surface of a pond, and the shadows and highlights on my subjects, are most beautifully captured as they are veiled by the dusk …
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Design and testing of a prototype in-line chip quality monitor
… control information for the manufacturers of wood chips. This monitor specifically addresses three common complaints with current chip sampling procedures. Chip sampling occurs too late in the process. It is inadequate. It is too infrequent to develop management information. The monitor is …
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Nitrogen chemistry in an urban bioretention system in Singapore
… from the anoxic layer material which includes wood chips and sand. Readings at outflow pipes indicate that a percentage of this nitrogen is likely re-mineralizing to ammonia upon exposure to more oxygen-rich conditions in the outflow pipes. Further study in the Balam Rain Garden using isotope …
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Optimisation of Co-Firing of High Moisture Biomass with Coal in a Bubbling Fluidised Bed Combustor
… Sugar.<br/><br/>Different fuels including wood pellets, wood chips and sugar industry by-products such as vinasse, raffinate and pressed pulp were fired/cofired with Thoresby coal in a fluidised bed test rig installed at the University of Glamorgan. The blends of wood chips and pressed pulp …
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Efficiency of Using Commercial DNA Extraction Kits and the Organic Extraction Method in Removal of Polymerase Chain Reaction Inhibitors
… ten μl of whole blood were deposited on soil, wood chips, and cotton swatches treated with bleach. DNA was extracted from all samples and controls using three extraction procedures and quantitated. The AmpflSTR Identifiler kit was used to develop genetic profiles to assess the quality of the …
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Investigation of Recyclable and Renewable Crude oil from Biomass and Plastics
… PS, PP), recycled rubber from tires to poplar wood chips. It was found that, increasing the temperature from 500 ∘C to 600 ∘C for LDPE and HDPE decrease the liquid oil yield from 61.1% to 54.7% and 79.0 wt.% to 75.5 wt.% respectively. The olefin to paraffin ratio increases as the temperature …
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Urban Landscape Management Practices as Tools for Stormwater Mitigation by Trees and Soils
… after traffic, respectively. Runoff rates from wood chips were only 0.19 ml/s faster after traffic while rates from bare soil and marble gravel with geotextile increased 2.28 and 2.56 ml/s, respectively. Management of soils, trees and landscapes for stormwater benefit could reduce cost of …
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Nitrification of Landfill Leachate by Biofilm Columns
… achieved by a packing media consisting of pine wood chips. The effects of varied concentration loading, varied hydraulic loading, and nitrification inhibitors were studied. Varied ammonia concentration did not have a huge impact on the ammonia removal rates (77-87%) in the reactor with pine wood …
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Development of unsaturated flow functions for low impact development stormwater management systems filter media and flow routines for hydrological modeling of permeable pavement systems
… of filter media soils containing gravel and wood chips.</p><p>The theta (psi) and Kr(theta) development framework used in conjunction with Richards' Equation performed well when tested against real time moisture profile in the sublayers of a permeable pavement system under natural …
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The simulation modeling of supply logistics of forest biomass in British Columbia
… BC forests has led to huge volumes of dead wood that exceed the capacity of the lumber industry. One way to make the most value of the surplus wood is to use it as the feedstock for bioenergy. The forest biomass can be supplied through conventional (roadside residuals), full-tree chipping, …
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Groundcover Management System and Nutrient Source Impact Physical Soil Quality Indicators in an Organically Managed Apple Orchard
… green compost (GC), shredded office paper (SP), wood chips (WC), and mow-blow (MB) grass mulch were utilized as GMS, and NS supplied to trees were from composted poultry litter (PL), a commercial organic fertilizer (CF), or an untreated control (NF) in a 4x3 factorial study. An established, …
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A Comparison of Chipper Productivity, Chip Characteristics, and Nutrient Removals from Two Woody Biomass Harvesting Treatments
… increased interest and incentive for the use of wood as a renewable form of energy. As a result, landowners and forest managers are considering chipping whole trees and harvesting residues as a means to meet increased demand of wood chips as a renewable source of energy. However, the …
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The recovery of acetic acid from wastes of tanning extract manufacture
… of weak leach liquors obtained by extraction of wood chips. The liquors are highly corrosive due to acetic acid contained therein along with lesser quantities of other organic substances common to woody materials. Recovery of the acetic acid would be desirable from two standpoints: (1) the value …
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The separation of the insoluble non-tannin constituents from chestnut extract
… the preparation of tannin extract from chestnut wood chips there is present in the extract, along with the tannin, certain insoluble non-tannin constituents. If allowed to remain in the extract, these materials make the tanning solution unsuitable for use in the manufacture of leather. To …
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A comparison of integrated biomass to electricity systems
… diesel engine. The feedstock in all cases is wood in chipped form. This is the first time that all three thermochemical conversion technologies have been compared in a single, consistent evaluation.The systems have been modelled from the transportation of the wood chips through pretreatment, …
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Host plant associations and chemical ecology of Cerambycidae
… include some of the most damaging pests of woody plants and invasive species pose a serious threat to North American forests. The beetle family of Cerambycidae is a diverse group whose larvae feed primarily in the woody parts of trees, and many species are important pests in their native …
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Sustainable management of tannery hair waste through composting
… of bovine hair, mixed with dry leaves, soil, and wood chips/sawdust was performed in a rotary drum under controlled conditions. Optimum conditions, in order to sustain thermophilic microbial flora, were found to be (1) a moisture content of 55-+2% RH, (2) pH 7-8, (3) temperature of 49-+ C, and (4) …
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