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                                    Conversion of waste plastics to energy -- anaerobic digestion technology developed in South Australia

                                    發布時間:2017-07-22 11:24:47    552次瀏覽     

                                    South Australia is developing the first anaerobic digestion technology to turn waste plastics into energy and fertilizer systems.
                                    Conversion of waste plastics to energy -- anaerobic digestion technology developed in South Australia
                                    The system, referred to as POET, is an abbreviation for polymers, organic, energy, and processing. The POET system is expected to have two machines, each capable of handling 20 tonnes of plastic waste per week. The technology was developed by David Thompson, which, after years of research and testing, expanded the process into a "positive" business model".
                                    The plastic energy technology has so far been successfully applied to polyethylene, polypropylene, polystyrene and expanded polystyrene, Thompson said. "The anaerobic digestion process varies with the material and depends on the temperature and the stability of the system." Thompson added that he has the ability to control plastic degradation, and that bacteria can completely digest polymers without toxins or heavy metals.
                                    "The POET system is a microbial digestive system that allows rapid microbial digestion," Thompson said. I think this is the key to making it a business opportunity." Currently, Thompson has received appreciation from overseas, including a large consortium in South America, and they are eager to apply the technology.
                                    Currently, the two POET machines will be built in a sewage treatment plant in Vitoria, australia.
                                    The same microbes deal with plastics and water at the same time. The microbes then die, leaving liquid and solid biomass available for fertilizer, and methane that can be separated into methane and carbon dioxide. These methane can be used to make heat and energy, can power the sewage treatment plant, but also capture and reuse carbon dioxide. "The plastic goes into the anaerobic state of wastewater, and microbes can digest the plastic and produce energy," Thompson said." More than one million tons of contaminated plastic are transported to landfill sites in Australia every year. In the United States, the figure is close to 10 million tons.
                                    The system doesn't have any impact on existing recycling systems because the system is targeted at landfills and adds new sources of revenue to companies in the garbage industry, says Thompson.
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