THEOrganic wasteare a possible source of renewable energy, transforming waste into energy is the new frontier of the sectoralternative energies.
There are many technologies and reactions suitable for obtainingenergy from waste. A great opportunity for the energy sector is to derive electricity directly from the combustion of urban waste through incinerators, waste-to-energy plants and pyrolysis; Unfortunately, this perspective presents a large number of side effects to the detriment of the environment and public health. Equally controversial is the issue ofbiomass where there is a real difference of opinion.
Ideally, energy should be drawn from biomass gods waste public. Mowing and pruning of small private or public gardens could represent the biomass perfect; however, mowing and maintenance pruning of public and private green areas must be subject to waste legislation and therefore cannot be collected, directly, by companies operating in the biomass.
Energy from waste
Here are some examples of how this can be doneenergy from waste:
It can be produced starting from organic waste and dry distillation of wood. It can be used both as fuel to power stoves, and in the transport sector in combination with petrol or biodiesel. In the field energetic (for electricity generation), thebiomethanolit can be used as an alternative to hydrogen in fuel cells.
- Thermotoga Neapolitan
Thanks to a detailbacteriumit is possible to produce electricity from organic waste. We talk about the biological production of hydrogen by bacterial fermentation of organic substrates. Hydrogen as a source of energy.
It is a biofuel obtained by refining the biogas generated by the "anaerobic digestion", a technique used in the recycling of the organic fraction of waste which allows to combine the recovery of material with the energy recovery,you seeBiogas.
Biogas is produced by anaerobic digestion (in the absence of oxygen) with a biological process which, starting from Organic waste, leads to the formation of different intermediate metabolites which are gradually transformed until the production of biomethane and carbon dioxide.
- Pyrolysis of municipal waste
A method to deriveenergy from wasterather controversial. We talk aboutwaste-to-energy plants to pyrolysis even if the environmental damage seems to be the same seen with the classicsmunicipal waste incinerators.
Biomass plants, especially those that use wood waste as a "fuel", could play a leading role in energy production. Again we speak ofBiogas.
- Transforming oil into biodiesel
L'exhausted oilit represents an excellent energy source and can be transformed into biofuel or used directly for the production of electricity by combustion in power plants.
THE municipal solid waste not recyclable, they are selected and placed in special ovens. Their combustion produces heat that will heat the water contained in a boiler. The water will turn into high pressure steam that it will produceelectric energy.
In the photo, the Acerra waste-to-energy plant, Naples
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