BACKGROUND: The production of paper makes use of cellulose and lignin as a raw material, and almost all cellulose and lignin production comes from raw wood materials, contributing to deforestation and resulting in potential environmental harm. It is therefore beneficial to develop technologies for cellulose and lignin recovery for re-use and sustainability of resources.
BACKGROUND: The presence of certain polybrominated flame retardants in electrical and electronic equipment plastics can make recycling of the raw materials difficult. We have investigated the use of ionic liquids to selectively remove these harmful components and a series of imidazolium-and pyridinium-based ionic liquids have been prepared in a microwave reactor. Microwave synthesis is rapid and the products obtained are identical to those obtained by conventional synthetic methods.
BACKGROUND: Ionic liquids (ILs) are able to dissolve a wide range of organic and inorganic molecules and have potential application in the separation and recovery of valuable components from wastes. The potential for ILs to separate sugar and fat from food waste is demonstrated using chocolate as a model system.
BACKGROUND: Chemical oxidation is generally used to oxidise Cr(III) to Cr(VI) in aqueous effluents, but this leads to Cr(VI) solutions that are contaminated with oxidising agents, which reduces their recycle and reuse value.
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