Incineration of waste
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SectorsObjectiveThe most commonly used conversion methods – combustion of waste to produce heat or electricity; anaerobic digestion to produce methane for heat or power production etc. all are well-established and commercial technologies. A further set of conversion processes – for example, the production of liquid fuels from cellulosic materials by biological or thermochemical conversion processes, such as pyrolysis – are at earlier stages of commercialisation or still under development.
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SectorsObjectiveAccording to the EC (19 November, 2008) “waste means any substance or object which the holder discards or intends or is required to discard.” Recycling materials and products – that are considered waste - is an ancient practice which shows that in times of resource scarcity (i.e. shortage of virgin materials) societies attach more economic and societal value to their own waste. This implies that throughout time the definition of waste can change as well. Generally speaking longer use or re-use of materials and products this is often mainly to cover a society’s needs.
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Publication dateObjectiveApproach
Amidst a visible period of transition with trade unions, employers’ organisations, the private sector and the UN allying themselves to low-carbon and sustainable thinking, this paper reports on the emergence of a “green economy” and its impact on the world of work in the 21st Century. It shows for the first time at a global level that green jobs are being generated in some sectors and economies.
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The solid fuel dispenser primary function is to inject the right amount of fuel and oxidizer into the incinerator furnace with airflow at the needed pressure to move this mixture in a fluidized way during the chemical reaction of combustion. The dispenser requires a combustion with a temperature above 800 °C to maintain the conditions necessary for self-sustainability and self-ignition of the flame thus achieving complete combustion.
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Modern silicon solar cell manufacturing relies on screen printing as a metallization process to apply the front contact grid to solar cells. This process uses silver-containing paste that is applied on top of the silicon nitride anti-reflection coating. In order for the paste to solidify and make contact to the substrate the cell goes through a sequence of thermal treatments. At first the paste dries out then it etches through the dielectric and finally makes contact with silicon. The screen printing process has a number of drawbacks limiting potential improvement of future solar cells.
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Overview of Market-Based Operation Management Modes for Biogas Plants in Beijing
