Agri-waste
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Peanut shells are generally considered to be a worthless agricultural byproduct. That could be about to change, however, as scientists have developed an air-purifying filter that utilizes the shells.
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In tropical countries such as the Philippines, there are plenty of rice husks ... and also plenty of termites. A group of engineering students recently decided to use the former to address the latter, by creating termite-resistant particleboard from rice husks.
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A chemist is making eco-friendly fireplace logs from lawn clippings.
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A Hong Kong company is selling 100% biodegradable fast food containers, made from waste straw left over after wheat harvesting.
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Researchers have created partially-biodegradable bioplastic using waste meat and bone meal.
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The Argentine National Institute for Industrial Technology is taking an interesting alternative approach to the green revival interest in natural dyes: they're experimenting with the extraction of pigments from agricultural waste.