Activated carbon startup eyes commercial plant
A South Australian startup that has developed a low-cost technique for making activated carbon from agricultural waste will soon begin a capital raising round to fund commercial production. Adelaide-based company ByGen is looking for investment of A$1.5 million to build a full-scale plant capable of producing commercial quantities of activated carbon. Founders Lewis Dunnigan (CEO) and Ben Morton (CTO) established a pilot plant at the University of Adelaide last year, and have experimented with a variety of widely available agricultural wastes including almond shell, sawdust, grape marc and rice husks to produce high quality activated carbon. Activated carbon has a variety of uses including purifying liquids such as drinking water, food and beverage processing, odour removal, remediating contaminated soils and in the precious metals industry. It is traditionally made from coal, wood, or coconut shells, but Dr Dunnigan said he believed ByGen’s product was the first made sustainably from wastes. “We came up with a really low cost, low energy way of making activated carbon and then we realised there was a lot of demand for it, so we’ve commercialised the technology we developed,” he said. Activated carbon has many uses from water purification to soil improvement and mineral processing. “Traditionally you have to make it at about 1000 degrees, using steam or harsh chemicals. We felt like the energy intensive processes in developing countries with non-renewable feedstocks weren’t sustainable, so we tried lots of different Australian agricultural wastes and came up with the ByGen process.” The ByGen process is significantly less energy intensive with quality and yields in-line with existing technologies; four tonnes of agricultural waste produces approximately one tonne of activated carbon, with a value of up to A$2500 a tonne. The process can be done at the source of the waste production to reduce transportation costs and produces activated carbon at […]