AeroThermal's autoclave is a pressure vessel that steam treats its contents at a constant temperature and pressure, serving to sterilise, clean, break-down lignin structures and reduce waste volume by approximately 60%. Then, by applying a secondary process the true added value of the autoclave can be realised. These qualities can not only serve to increase landfill diversion rates, but if the process by-product, cellulose floc, is used to its full advantage, clean, green energy can be derived from waste.

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The EnviroThermal fixed bed gasifier is an innovative design that utilises a revolutionary multidirectional airflow. The system is currently being rigorously tested under University conditions and a small demonstration prototype will soon be available in Poole, Dorset.

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Anaerobic Digestion (AD) is the preferred stabilisation process for the treatment of wastewater sludge and organic wastes. The process provides volume and mass reduction and delivers valuable renewable energy with biogas production. Anaerobic digestion is a simple process that can greatly reduce the amount of organic matter that might otherwise be destined for landfill or burnt in an incinerator.

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British engineering company AeroThermal Group Ltd together with 4Recycling Ltd is proposing to develop a sustainable waste and resource treatment facility at the site of Imerys Minerals Ltd at Lee Moor, South Devon. The facility will use autoclave and The AeroThermal Group Ltd's proprietary Advanced Anaerobic Digestion (AAD) technology to generate 3MW of renewable (green) electricity. Recyclable materials will also be recovered from the waste stream and the stable digestate, a by-product of the AAD process, will be used to help restore parts of the adjoining Imerys Minerals Ltd Lee Moor China Clay workings.

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