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By Teun Schröder Scientists at the University of New South Wales (UNSW) in Australia have converted a diesel engine with minimal modifications so that it can also run on hydrogen. The research shows that a rapid switch to a more sustainable fuel is possible, provided that the hydrogen is green, of course. In technology it is called a retrofit: adding new technology to existing systems, so that machines are given new possibilities. In this case, the scientists added a hydrogen injection system to a diesel engine. This allows the engine to run on a mixture of 90 percent hydrogen and 10 percent diesel. The results were published in the International Journal of Hydrogen Energy. Although the fuel mixture cannot therefore be called completely clean, CO2 emissions fell by 85 percent compared to a completely diesel mixture. In addition, scientists reported an improvement in efficiency of 26 percent. Diesel and hydrogen injection The engine still uses a diesel injection, but is supplemented by a hydrogen injection that is directly connected to the cylinder. Both injection systems are controlled separately. This makes it possible to play with the amount of hydrogen in the cylinder. The result of this is a lot less nitrogen emissions than when a mixture of diesel and hydrogen ends up in the cylinder at the same time. Of course, hydrogen must be made with renewable energy to be labeled as a sustainable fuel. That rarely happens now. The vast majority of hydrogen is still produced from fossil fuels. Making mining more sustainable Nevertheless, the scientists already see opportunities for their innovation, for example for heavy vehicles and generators in mines. “At mine sites where hydrogen is already being supplied, we can convert existing diesel generators that are used to generate electricity,” says Professor Shawn Kook, one of the lead researchers. Quick solution “Being able to retrofit diesel engines that are already on the market is much faster than waiting for completely new fuel cell systems to be developed, which may be a decade away,” says Kook. “Due to carbon emissions and climate change, we need more immediate solutions to address the problem of the many diesel engines currently in use.”
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The platypus is among nature's oddest animals to such an extent that the first scientists to examine a specimen believed they were the victims of a hoax. UNSW researchers are teaming up with WWF Australia, Taronga Zoo and NSW National Parks and Wildlife Service to bring platypuses back into the Royal National Park—an area where they haven't been seen in almost 50 years : in fact they were wiped out but a chemical spill in the streams of the park in 1970. Since this time, the population of platypuses has declined across much of its traditional range due to habitat destruction, river regulation, predation by invasive species, and an increased frequency of droughts and fires due to climate change. Researchers will begin this new project by surveying rivers to identify suitable habitat and confirm, as is suspected, that all the platypuses have gone, then a mixture of 10 male and female platypuses will be released in the second half of 2022. Learn more on this project https://www.wwf.org.au/news/blogs/rewilding-the-platypus#gs.cmqc8j https://phys.org/news/2021-09-platypus-comeback-australia-oldest-national.html
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Platypuses lives matter <3
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Yes, we need more wildlife, excellent initiative.
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"Chemical engineers at UNSW Sydney have found a way to make ‘green’ ammonia from air, water and renewable electricity that does not require the high temperatures, high pressure and huge infrastructure currently needed to produce this essential compound." "In a paper published today in Energy and Environmental Science, the authors from UNSW and University of Sydney say that ammonia synthesis was one of the critical achievements of the 20th century. When used in fertilisers that quadrupled the output of food crops, it enabled agriculture to sustain an ever-expanding global population." "Dr Emma Lovell, a co-author on the paper from UNSW’s School of Chemical Engineering, says" "“The current way we make ammonia via the Haber-Bosch method produces more CO2 than any other chemical-making reaction,” she says. “In fact, making ammonia consumes about 2 per cent of the world’s energy and makes 1 per cent of its CO2 – which is a huge amount if you think of all the industrial processes that occur around the globe.”" "The way that we did it does not rely on fossil fuel resources, nor emit CO2,” Dr Lovell says. “And once it becomes available commercially, the technology could be used to produce ammonia directly on site and on demand – farmers could even do this on location using our technology to make fertiliser – which means we negate the need for storage and transport." https://www.scimex.org/newsfeed/new-eco-friendly-way-to-make-ammonia-could-be-boon-for-agriculture,-hydrogen-economy
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Dear Per-Olof Hall Thank you for getting your climate love to level 2! We have reached out to UNSW and requested a response. I will keep you updated on any progress! /Adam We Don't Have Time
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green energy is a calling course
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A great solution
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The future is promising, the future is green energy.