Tag: Waste

Pharmaceutical residues can be removed from effluent using pine bark. Now, a Singapore-based research team is looking to pomegranate peel to remove 4-nitrophenol from water. The toxin is used when producing dyes, pesticides and analgesics. The pomegranate peel is converted to biochar at 600° before being ground to nanoparticles through ultrasound treatment. The particles’ surface attracts the nitrophenol, which...

Tomato waste can protect tinned food. Meanwhile another Italian startup is aiming to extend the shelf life of fruit and vegetables - using waste from liquorice production. Certain materials in the ‘sweet root’ are effective against bacteria, viruses and fungal spores. In a patented process, root hairs from the plant are extracted then converted into nanoparticles, which are used...

Foliage can be used to make sustainable paper and packaging material. Similarly, a Swedish startup is using seagrass that has been washed ashore to manufacture environmentally-friendly yarn. Until now the plant, which is present in large quantities on beaches, has simply been discarded. A recent feasibility study has shown it can be made into yarn without the addition of...

Bumpers on boats are helping to keep waterways clean. Now a young English couple is removing rotting yachts from Cornwall’s riverbanks. Their non-profit organisation’s focus: the abandoned fibreglass vessels from whose hulls plastic particles and toxic materials have leaked into surrounding waters. Recent on-site analysis showed there were more than 11,000 fibreglass shards in a single kilogram of oysters....

We have octopuses to thank for sustainable suncream. Environmentally-friendly containers for the cosmetics industry, in turn, are the brainchild of a female founder’s startup in London. Their process entails fermenting plant waste and converting it into bio-based synthetic materials. They can be hard or soft, matt or glossy. The products have been certified for home composting by a testing organisation...

No one needs kidney stones. Nevertheless, a mineral present in animals’ urinary calculus is helping to make construction materials from sawdust fire resistant. A research team in Switzerland mixed sawdust and struvite (a crystalline ammonium magnesium phosphate), adding an enzyme extracted from watermelon seeds for stickiness. The mixture was then pressed for two days into chipboards. Tests showed that...

AI can find sustainable materials for the textile industry. A startup in England, meanwhile, is focusing on the circular economy and the power of nature to create non-toxic colouration technology. Plants owe their dazzling colour to crystals present in their cell walls, which reflect light differently depending on how they are arranged. The team extracts these crystals from the...

Tree bark can be an alternative to single-use plastic. Meanwhile a Finnish PhD student has alighted on pine bark as a filter for removing pharmaceutical residues from liquid waste. Treated wastewater often contains traces of medication such as blood pressure medicine or antidepressants. Antibiotics are particularly problematic as their presence helps pathogens develop resistance. The female researcher fortified the...