Results for "Environmental engineering"
Aiming to meet the recently adopted strict environmental standards, and the need of affordable in cost clean power production, a preventive fuels pre-treatment technique, based on low temperature carbonization, has been tested. Clean coals were produced from two poor quality Greek coals and an Austr...
The leachability of trace elements from lignite, biomass, and blends cocombustion ashes was investigated by using the Toxicity Characteristic Leaching Procedure (TCLP) of the US Environmental Protection Agency (US EPA). In this work, the toxicity of the aqueous leachates and the concentrations of th...
A treatment technique involving three sequential stages (demineralisation, activation and sulphur dispersion) was developed for the production of suitable activated carbons. Demineralisation included three steps of acid treatment and samples received were characterised by X-ray diffraction (XRD). A ...
Blends of natural wood, demolition wood, railroad sleepers, medium-density fiberboard residues, and power poles with lignite were used, and the co-combustion efficiency and the effect of wastewood addition on the emitted pollutants were investigated. Carbon monoxide, sulfur dioxide, and oxides of ni...
This research is composed by the study, testing and modeling of the main CO2 capture technologies, mechanisms for economic sequestration (enhanced coal-bed methane) and use of CO2 for enhanced coal mine methane production (CMM). More specifically it includes:
The aim of the invention is to create a heating boiler of higher efficiency and reduced amount of environmentally- harmful, dismissed into the atmosphere, emissions, operating with pellets as well as with other kind of biofuel. The solution to this aim is a heating boiler, which consists of a coated...
System of production and storage of renewable energy from the sun, as well as biomass and geothermal ones.
The product aims primarily to a significant increase in the transformation process of the primary energy (solar, geothermal and biomass), since the obtaining of final energy (heat and electricity) is based on processes of low enthalpy, low pressure, low temperature. The proposed solution is therefor...
Hybrid Photocatalysis - Ultrafiltration oxidation process for a broad range of water treatment applications
A hybrid photocatalysis-ultrafiltration membrane system offers an integrated solution for simultaneous oxidation of organic substances and separation of suspended photo-catalyst nano-particles. This novel technology is implemented in a continuous, once-through, mode of operation with automatically c...
The presented technology suggests combination of the two processes that leads to significant safe of additional fuels use and decreases the price of the final product – the briquettes. Other significant novelty of the technology is the idea for production of customized coal briquettes by combining t...
The amount of heat / cooling, through an energy transmitter - the air, is passed to the entrance of the heated object: working place, bed, armchair etc. The valve for weight, a crane or another device or regulator is activated only by human’s presence. There is access to the air path (with local or...
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