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APRIL 2013 Issue 2 Vol. 22 • P: (03) 9888 4834 • E: l.martin@ryanmediapl.com.au • www.timberbiz.com.au
Creating a new future for Scottsdale By Rosemary Ann Ogilvie
I
NNOVATIVE THINKING has been largely responsible for Tasmania’s reputation as one of the great international foodie destinations. Big thoughts have led to the development in recent years of highly specialised – and risk-laden – industries including truffle, saffron, wasabi, and artisan cheese. Now, the Dorset Research Group is investigating a project that will use innovative, Australian-developed technology to produce ethanol from existing green resource in Tasmania’s northeast, revitalising an area where 600 jobs have disappeared in the past decade through the loss of both forestry and food processing. Dorset is one of the hardest hit municipalities, with an unemployment rate of 9.6% and the lowest household income of Tasmania. Population is moving away, housing prices are falling, retail sales are very poor. “It’s well recognised that Scottsdale has been the most severely affected because of the forestry industry and that’s proven by a number of studies and backed up by ABS data,” says Wendy Mitchell, Dorset Council’s Economic Development Manager. After identifying this opportunity last July, Wendy contacted several members of the community –
among them Timber Communities of Australia branch president Karen Hall, and harvesting contractor Ken Hall – suggesting they pull together a team to look at the opportunity. And so the Dorset Research Group was formed to investigate the viability of an integrated timber processing plant with ethanol as the central point, using technology invented by Russell Reeves Ph.D., managing director and chief chemist of Apace Research Limited. A who’s who of local business identities, many from the forestry industry, makes up the group: John Beattie, Alan Davenport, Health Blair, David Hamilton, Dale Jessup, and of course Wendy, Karen and Ken.
Embracing the concept The community embraced the concept from day one – and indeed, the model the Group is pursuing is very much community based, with the whole ethos underpinning the project being the creation of community wealth. Two hundred people attended the inaugural meeting in August, where various experts spoke about biofuels in general, and presenter John Lord explained how a project like the Dorset Integrated Timber Processing Facility – as it’s now called – could reinvigorate small
Ethtec Process
Conventional ethanol production relies on the sugar and starch content of food crops, and requires the specific planting of these crops for ethanol, which is causing concern about future food security as valuable farmland is turned over to biofuel crops. Ethtec technology actually converts low-value material – often waste products – into ethanol, eliminating the need to grow special biofuel crops. It utilises the so-called second-generation or lignocellulosic ethanol technology, which has been proven in the laboratory. A scaled pilot plant in Harwood, NSW, is testing commercial production feasibility with a range of feedstock such as wood and sugarcane harvest residue. The Ethtec plant consists of four independent but linked technologies operating in a continuous process, and featuring water and acid recovery and recycling loops. Hydrolysis: Concentrated sulphuric acid treatment of lignocellulosic feedstock to produce sugars using a twin screw extruder and tube reactor. Lignin separation and acid recovery: Separation of the lignin and acid from the sugars, recovery/recycling of the acid for further use in the hydrolysis step, and recovery of the lignin for combustion via cogeneration to produce energy. Fermentation: Simultaneous fermentation of two types of sugars (pentose and hexose) to ethanol using newly developed micro-organisms. Ethanol recovery: Recovery of ethanol from the fermentation broth by induced phase separation using potassium carbonate, and recycling of the water back to earlier phases.
Environmental Benefits
Ethtec’s ethanol production technology features strong environmental benefits not found in most other transport-fuel options. Extremely low life-cycle greenhouse gas emissions and high positive energy balance, compared with other transport fuels, including biofuels. Closed-loop recovery and recycling of process liquids and energy, with reduced total water consumption and elimination of wasteful effluent. Waste fibre sources from existing, established industries such as sawmills, sugar mills, etc., eliminating the need to compete with food crops.
Ken Hall and Dr Russell Reeves.
communities. Subsequent meetings have been equally well attended. Towards the end of August, the Group visited the small sugar-mill town of Harwood in NSW (between Maclean and Iluka) to see the extraction technology – Ethtec – in action at the Ethanol Technologies Limited pilot plant. Ethtec technology converts lignocellulosic materials to ethanol in an economically viable way that, according to the Ethtec website, “…is internationally recognised as being the basis of a legitimate and environmentally sustainable ethanol fuel industry …able to produce ethanol in the volume required to meet demand for liquid fuels.” Almost any lignocellulosic material can be used with this process: wood, paper, sugarcane bagasse, grain crop stubbles, cotton stubble and grasses. The visit piqued the Group’s interest, and led to Dr Reeves and chairman Robert Carey visiting Tasmania in December for a two-day workshop about the operations and how to progress the project. After being briefed on the technology by Dr Reeves, Deputy Premier Bryan Green agreed that ethanol “…may present an exciting opportunity for our timber and agricultural sectors”. “Another group in the Huon Valley has been working in unison with our group,” says Karen. “We have slightly different dynamics, of course: different feedstock, totally continued on page 4.
The whole world’s forestry fair
MOREinnovations Forestry professionals from around the world meet at Elmia Wood to see the latest innovations. Suppliers, contractors, forest owners, timber merchants, timber hauliers, forest administrators, researchers and students make new contacts and business deals. Since it began in 1975, Elmia Wood has been an irreplaceable meeting place for forestry professionals from around the world. Every fourth year 500 exhibitors and 50,000 visitors from 50 countries get together in the forest south of Jönköping, Sweden.
5-8 JUNE 2013 In the forest · Innovations · Encounters · Machines · Demos · Technology · Bioenergy · Economics
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