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woodchips, etc ; biofuels; friction; humidity; rheometers; torque; wood; woody biomass; Show all 8 Subjects
Abstract:
... Friction between wood particles can be a critical property when designing processing equipment for creating cellulosic biofuels and similar natural products. Also, as wood processing is likely to occur year-round, understanding the friction between wet as well as dry wood particles can help design and model equipment, such as screw feeders. Here, a tribo-rheometry method was developed using a comm ...
woodchips, etc ; Populus; bioenergy; biomass; carbon dioxide; economic sustainability; energy; environment; Italy; Show all 9 Subjects
Abstract:
... Short rotation woody crops (SRWCs) can be a sustainable solution for producing biomass for bioenergy and, at the same time, mitigating CO₂ emissions. Although the contribution SRWCs can give to the transition to a low-carbon energy economy, farmers are hesitant to introduce them, as they have a low added value and there are uncertain economic prospects for cultivating SRWCs. Therefore, this study ...
woodchips, etc ; biomass; combustion; energy; fluid mechanics; fuel bed; models; prediction; wastes; wood; Show all 10 Subjects
Abstract:
... A detailed but still central processing unit (CPU)-efficient bed model for grate-fired combustion of biomass and waste is developed. Simulations of wood chip combustion are performed, and the results are compared to experiments. The so-called layer model is used to track the development of the thermally thick representative fuel particles in the bed. As an efficient way of handling a large number ...
woodchips, etc ; Fagus; apples; bacon; heterocyclic compounds; pears; thiobarbituric acid-reactive substances; water content; Show all 8 Subjects
Abstract:
... The impact of different woodchips (beech, oak, pear, and apple) on the contents of heterocyclic aromatic amines (HAAs) and quality characteristics of smoked bacon was investigated. The results indicated that the contents of total HAAs and non-polar HAAs in beech- and oak-smoked bacon were lower than that in pear- and apple-smoked bacon (P < 0.05). There were no HAAs detectable in control (non-smok ...
woodchips, etc ; biomass; compression strength; concrete; modulus of elasticity; modulus of rupture; rubber; wood; Show all 8 Subjects
Abstract:
... HighlightsA more flexible and ductile concrete was produced with micronized rubber powder (MRP) and wood chip inclusions.Failure modes with MRP or wood chip inclusions were less sudden and less catastrophic than with 100% concrete.The composites with MRP and wood chips lessened the propagation of cracks throughout the specimen.Compressive strength was reduced when MRP or wood chips was used as a r ...
woodchips, etc ; Doppler radar; acoustics; foams; particle image velocimetry; rivers; sediments; sowing; streams; surface roughness; Show all 10 Subjects
Abstract:
... Surface velocity is traditionally measured with in situ techniques such as velocity probes (in shallow rivers) or Acoustic Doppler Current Profilers (in deeper water). In the last years, researchers have developed remote sensing techniques, both optical (e.g., image-based velocimetry techniques) and microwave (e.g., Doppler radar). These techniques can be deployed from Unmanned Aerial Systems (UAS ...
woodchips, etc ; Acidobacteria; Chloroflexi; Myriophyllum aquaticum; Planctomycetes; Proteobacteria; biochar; environment; municipal wastewater; species richness; zeolites; Show all 11 Subjects
Abstract:
... The performance of different suspended fillers (zeolite, drinking water treatment residual, biochar, woodchip and stereo-elastic packing) and their combinations in treating municipal wastewater in ecological floating beds (Eco-FBs) planted with Myriophyllum aquaticum was assessed. Six sets of enhanced Eco-FBs were developed to assess the individual and synergistic effects of combinations of the va ...
woodchips, etc ; bioreactors; denitrification; environment; nitrate nitrogen; nitrogen; rain; subsurface drainage; temperature; water quality; South Dakota; Show all 11 Subjects
Abstract:
... Edge-of-field practices such as denitrifying woodchip bioreactors can be used to improve the water quality of agricultural effluents. This study evaluated the effectiveness of four field-scale woodchip bioreactors in removing nitrate‑nitrogen (nitrate-N) from subsurface drainage in eastern South Dakota. Four woodchip bioreactors were installed and monitored between 2014 and 2016 near Arlington, Ba ...
woodchips, etc ; bioreactors; cold; cold zones; dissolved inorganic nitrogen; mosses and liverworts; nitrogen; water flow; Finland; Show all 9 Subjects
Abstract:
... To remove nitrogen in cold conditions, we studied new nature-based treatment solutions using six pilot-scale reactors. The pilots were woodchip bioreactor (WBR), aquatic floating hook-moss (Warnstorfia fluitans) (MBR), and a combined woodchip and floating hook-moss hybrid unit (HBR) with an improved hydraulic design. The experiment was run in a climate room at temperatures of 10 °C and 5 °C and us ...
woodchips, etc ; bioreactors; databases; drainage; effective porosity; equations; nitrates; oxygen; pH; principal component analysis; stormwater; temperature; Show all 12 Subjects
Abstract:
... Woodchip bioreactor (WBR) is one of the green infrastructures in the agriculture system to reduce nitrate from agricultural drainage and stormwater. A lot of abiotic factors have been reported that affect nitrate removal lacking a comprehensive understanding. In this study, we studied eight important abiotic factors, including media age, hydraulic retention time (HRT), influent nitrate concentrati ...
woodchips, etc ; Methanosarcina; ammonia; anaerobic digestion; biochar; electron transfer; environment; food waste; iron; methane; methanogens; propionic acid; Show all 12 Subjects
Abstract:
... The effects of different recovery strategies on inhibited anaerobic digestion (AD) of food waste (FW) was examined in this study, with the finding that dosing pine woodchip biochar could reverse the effect of volatile fatty acids (VFA) inhibition (mainly propionic acid) and yielded 105.55% more methane than the control. The addition of nano-zerovalent iron (nZVI) promoted the generation of VFA whi ...
... The effect of organic bulking agents on CO₂, NH₃, N₂O and CH₄ emission and related genes was evaluated in 40 days sludge composting with wood chip, wheat straw and rice husk, respectively. The results showed wood chip had the highest C/N of 111.3, total porosity of 93.13% and aeration porosity of 78.98% among three bulking agents. Wheat straw had the highest water-holding porosity of 25.62%, which ...
... Woodchip bioreactors are a promising approach to remove nitrate from agricultural drainage systems; however, their low removal efficiency at cold temperatures remains a significant challenge. Here we analyzed the efficacy of fungal inoculation to enhance nitrate removal in woodchip bioreactor microcosms under cold conditions. Among the cold-adapted, nitrate-reducing, and cellulose-degrading fungi ...
... This study investigated groundwater hexavalent chromium (Cr(VI)) decontamination by a biological permeable reactive barrier (bio-PRB), where a woodchip-elemental sulfur [S(0)] based mixotrophic process was established. 89.0 ± 0.27% of Cr(VI) was removed from the synthetic groundwater after 72 h at a concentration of 50 mg/L during the preliminary batch experiment. The impact of geochemical and hyd ...
... A lab-scale sulfur-limestone based bioretention system with a submerged zone was used to remove nitrate–nitrogen (NO₃⁻-N) from stormwater. The results indicated that denitrification mainly occurred during the first 5 d of drying period. With the NO₃⁻-N concentration in the influent increasing from 20 to 50 mg/L, after 5 d of drying period 93.99–97.26% NO₃⁻-N was removed, and the effluent sulfate ( ...
woodchips, etc ; aeration; air flow; bulk density; composts; laboratory experimentation; mortality; oxygen; permeability; porosity; sawdust; strength (mechanics); swine; water content; Show all 14 Subjects
Abstract:
... HighlightsDesign characteristics for animal mortality compost cover materials were tested.Compressive stress was applied to simulate the effects of the mortalities on cover materials.The highest permeability was measured for sawdust at 25% moisture content.A linear relationship was found between the volumetric flow rate and the power required to aerate the piles.Abstract. Composting is an aerobic ...
... As a zero-carbon energy source, biomass will play an important role in achieving the goal of carbon neutrality. The efficient conversion and utilization of biomass energy remains a great challenge. Thermochemical liquefaction is one of the most efficient ways to convert biomass into liquid fuels. In this study, five different solvents were used to liquefy sawdust. The results showed that cyclohexa ...
woodchips, etc ; chemical composition; gravel; industrial wastewater; lead; lignocellulosic wastes; neutralization; pH; sawdust; spent mushroom compost; wastewater treatment; zinc; Montenegro; Show all 13 Subjects
Abstract:
... Passive wastewater treatment systems are an alternative to costly and ineffective chemical wastewater treatment methods. Lignocellulosic waste materials (LWM) are often used in passive wastewater treatment systems as a cheap and accessible source of nutrients. LWM, such as spent mushroom compost and woodchips, have been implemented for the successful management of mildly alkaline effluents, which ...
woodchips, etc ; adsorption; aquatic environment; biochar; biomass; cellulose; filtration; lignin; microplastics; municipal wastewater; pyrolysis; research; river water; sand; temperature; wastewater treatment; Show all 16 Subjects
Abstract:
... The release of microplastics (MPs) especially those with sizes less than 10 μm from effluent of wastewater treatment plants (WWTPs) is one of the major sources of plastics into aquatic environment. To reduce the discharge of MPs into environment, it is essential to further enhance their removal efficiencies in WWTPs. In present study, to boost the removal performance of MPs in sand filtration syst ...
woodchips, etc ; biomass; carbon dioxide; combustion; decision making; electricity; forest management; forests; geographic information systems; heat; research; spatial data; thermal energy; Show all 13 Subjects
Abstract:
... The aim of the work was to quantify the mass of logging residues (branches and tops; t yr⁻¹ dry matter, DM) for energy generation starting from Forest Management Plans (FMP) data. The methodology was applied to public stands of an Italian district (area: 3.60 × 10⁴ ha; period: 2009–2018). Compared to the previous preliminary analysis, the potentially available residues were computed considering fo ...