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Government CIO Outlook | Wednesday, January 05, 2022
Governments can no longer deny that sustainable development is the very least one should aim for, and waste-to-energy is a potential option that converts waste into useable energy, which is why it's classified as an energy recovery technique.
Fremont, CA: Gaseous, liquid, and semi-solid waste can all be converted into heat, transportation fuel, or power using waste-to-energy technologies. Waste-to-energy technology typically uses non-recyclable waste, which means there's no alternative way to turn it into anything useful. Waste-to-energy is the epitome of a circular economy. While incineration has traditionally been the most prevalent technique for waste-to-energy (WtE) conversion, there are several up-and-coming progressive waste solutions that show better promise and come with fewer drawbacks, such as concerns about harmful gases emitted by waste incinerators. Keep in mind that, in order for waste-to-energy systems to be completely circular, all compostable and recyclable trash must be composted and recycled.
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Some of the types of Waste-to-Energy solutions are:
Anaerobic digestion
Anaerobic digestion is a biochemical process that uses the material to make biogas and digest it in the absence of oxygen in a reactor. Reactors are densely populated with microbial populations that help break down the feedstock. Methane and carbon dioxide makes up the majority of the biogas produced by AD, although it also contains trace amounts of water vapor, other gases, and pollutants.
Gasification
Gasification is a thermal waste-to-energy technology that is widely regarded as a superior option to incineration because the product is cleaned before use. To put it another way, gasification waste-to-energy plants pollute the environment significantly less than typical incinerators. Municipal trash is used as a feedstock rather than a fuel in gasification, which turns it into syngas at high temperatures. Syngas is a flammable synthetic gas that can be used as a transportation fuel, natural gas substitute, and fertilizer.
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Hydrothermal Carbonization (HTC)
Hydrothermal Carbonization (HTC) is a thermochemical process that converts organic waste into structured carbons that are comparable to those found in fossil fuels. HTC uses a wet feedstock and a method that combines an acid catalyst with pressure at high temperatures (180 to 250°C) to produce hydro-char, a carbon-rich fossil fuel-like product. Hydro-char can be utilized not only as a fuel but also as a coal substitute. The result can be utilized to enhance soil, and the feedstock can be used in the gasification process.
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