GreenWall Technology is founded on the technology developed by renowned scientist and academic Phd Branko Hermescec from University of Melbourne, Australia. Dr Branko Hermescec’s technology has already seen substantial commercial and investment, for instance BlackWood technology. We are concentrating to further develop the technologies and products to eliminate the smoke pollution from the factories’ operation, electro plant, steel factories, chemical factory etc.
Wood Waste to Riches-- ABC Science Online
Scientists at the University of Melbourne have developed the technology to make artificial ebony, almost indistinguishable from the real thing.
The substitute for the valuable, endangered African tree species was developed by Dr Branko Hermescec from the school of forestry.
Ebony is now so scarce it sells for about $20,000 a tonne, but the ebony substitute, produced by specially treating pine, would be much cheaper and could take the pressure off dwindling ebony forests.
The 'ebony' is made by a process developed by Dr Hermescec called Low Temperature Fast Pyrolysis, which extracts chemicals from wood waste, to create value-added products. A wood chemical called furfuryl alcohol is extracted from pine sawdust using Fast Pyrolysis and then soaked into solid radiata pine, chemically imparting a dramatic increase in density, strength, durability and fire retardation.
Dr Hermescec says furfuryl alcohol-treated pine doesn't absorb water or support insect or fungal growth and is three times as hard and has at least twice the bending strength of jarrah, Australia's most valuable hardwood.
Low Temperature Fast Pyrolysis involves degrading wood thermochemically in an oxygen-rich environment. The process requires temperatures of no more than 300 degrees C and takes only seconds. The technique is a modification of conventional pyrolysis, where wood is thermochemically degraded under much higher temperatures and in the absence of oxygen.
The technology has now attracted overseas interest, with one European company announcing it will provide $1.2M to fund the further development of the technique to convert wood waste into high-value chemicals and white pulp for paper making.
Dr Hermescec said the process can take powdered sawdust worth $10 to $20 a tonne and convert it to valuable chemicals such as furfuryl alcohol, furfural, alpha-cellulose and a number of phenols - all currently imported into Australia in large quantities at up to $1500 a tonne.
Industry uses these chemicals to make plastics, adhesives, rayon, paper, explosives, medicines and food additives. Australia's imports of cellulose and its derivative products alone total more than $2000 million a year. The new funding will see the bench-top system devised by Dr Hermescec and his team established as a much larger production development unit to be commissioned later this year.