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Cow manure transformed by researchers into manufacturing-grade cellulose
Researchers have extracted cellulose strands from cow manure and turned them into manufacturing-grade cellulose for use in everyday items such as surgical masks and food packaging.
Through a process of trial and error, the research team discovered that using a horizontal rather than vertical vessel containing surface nozzles and injecting the jet of liquid into still or flowing water caused cellulose fibres to form. Yanqi Dai, first author of the study from UCL Mechanical Engineering, said: “Dairy farm waste such as cow manure is a threat to the environment and humans – especially through waterway pollution, the release of greenhouse gases into the atmosphere when it decomposes and the spread of pathogens. “Horizontal nozzle-pressurised spinning could be a huge boost to the global dairy farming industry by putting this problematic waste product to good use and perhaps creating a new source of income.”
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