Surface velocity is traditionally measured with in situ techniques such as probes (in shallow rivers) or Acoustic Doppler Current Profilers deeper water). In the last years, researchers have developed remote sensing techniques, both optical (e.g., image-based velocimetry techniques) and microwave radar). These can be deployed from Unmanned Aerial Systems (UAS), which ensure fast low-cost survey...

Formaldehyde is a dangerous compound that must eliminate from contaminated air. Different methods exist for removal of pollutants from the air that among them, the biological processes attracted a great deal of attention. Removal of formaldehyde from the contaminated air was investigated in three laboratory-scale biofilters packed with different materials (a mixture of compost and woodchips, th...

Highlights Performance of denitrifying bioreactors in Alberta was evaluated. Barley straw more effective reducing nitrate compared to wood chips. Hydraulic retention time, feedstock, and season are the primary factors affecting removal. Abstract. This study evaluated performance pilot-scale (LWD: 6 × 0.6 1m) filled with different carbon substrates, including barley straw, hemp woodchips, for re...

The co-disposal of densified sludge and wastepaper in a co-current flow packed bed gasifier represents new application of the thermal gasification process. Advantages of this technolo a gy include lower costs than other incineration or pyrolysis technologies, simple construction and operation, and the ability to a variety of fuels including agricultural wastes and other b.iomass materials in ad...

Abstract A recirculating aquaculture system (RAS) aims to achieve fish production with negligible discharge into the environment. RASs have been applied for in several countries, but nitrate removal is often a limiting factor increases. In this study, pilot-scale RAS (10 tons of fish/year) was connected water treatment field which consisted denitrifying woodchip bioreactor (9 m × 14 m) filled b...

Biomass transport represents a significant share of the final price biomass for energy, and itself requires fuel, whose combustion adds to greenhouse gas emissions. We conducted techno-economic analysis main forest wood products in Switzerland (firewood woodchips), as well solid liquid manure. First, we identified most common chains from supplier consumer Switzerland, by conducting expert inter...

Stirling engines (SE) offer good part load performance and high heat sink temperatures which make it a suitable candidate to serve as prime mover in micro-combined cooling, heating power (?-CCHP) applications. In this study, novel ?-CCHP configuration hybridising SE with an ORC utilise the waste from produce additional is proposed. Additional was recovered flue gas dry biomass feedstock, fire t...

Limited overall efficiency and excessive complexity can hinder the competitiveness of biomass gasifier solid oxide fuel cell micro combined heat power systems. To overcome these problems, hydrocarbons direct internal reforming is analysed as a strategy to increase reduce system complexity. same end, two biosyngas heating-up strategies are compared: catalytic partial oxidation afterburner off ga...

Abstract In recent decades, the use of forwarders in agroforestry systems has been increasing. systems, possibility to these machines various operational contexts allows reduction hourly costs and favors its also small enterprises. Europe, or farm forestry represents an important resource that offers alternative more sustainable land uses agricultural areas. By covering large areas, fruit orcha...

Although there are opportunities to reduce electrical energy demand in unit processes of mechanical pulp-based paper and paperboard production, this may not be financially beneficial. This is generally because optimization connected reduced refiner electricity pulping systems also results less steam available for the drying paper. As modern high consistency produce approximately one ton each MW...