Commercial Development of biobutanol
A number of companies are now investigating novel alternatives to traditional ABE fermentation, which would enable biobutanol to be produced on an industrial scale. These are summarised below.
The two leading technology developers in this area, Gevo and Butamax, have been involved in a patent dispute. Up-to-date information on the respective positions of each company is available from their websites. The information presented on this page was believed to be accurate at the time of writing. However, neither the members of the European Biofuels Technology Platform, the Secretariat, the European Commission, nor any other individual or organisation involved with this activity, accept responsibility or liability whatsoever with regard to the material on this web page or the use to which it is put.
On 24 May 2012, Gevo commenced production at the world's first commercial-scale 18 MGPY biobutanol plant, developed by conversion of the former Agri-Energy corn ethanol plant in Luverne. A number of technical challenges have been overcome (e.g. improved batch turnaround times, avoidance of infections, etc) in the first months of operation, and the company was on target to produce 50,000 to 100,000 gallons per month of isobutanol by the end of 2014 [Source: Gevo]. The company reports that is getting close to the efficiency required for fully commercial operation. In March 2015, Praj Industries Ltd. signed a MOU to become a Gevo licensee.
In December 2013, Gevo announced that the U.S. Army succesful trials of a 50/50 blend of Gevo's ATJ-8 fuel in a Sikorsky UH-60 helicopter. The use of 16% isobutanol in UL 87A pumps has also been approved by Underwriter Laboratories, with no need for any equipment modification.
In September 2009, Gevo, Englewood, CO announced that Gevo Integrated Fermentation Technology (GIFT™) will be used in an ICM demonstration plant in St. Joseph, Missouri to produce one million gallons of biobutanol per year by retrofitting an existing ethanol plant. The process can utilise much of the existing ethanol production system, but uses cellulosic yeast strains engineered to produce butanol instead of ethanol. In 2009, Gevo entered a licensing agreement with Cargill granting the company exclusive rights to use Cargill's host organisms in Gevo Integrated Fermentation Technology. Total has also reportedly invested in Gevo. This technology built upon research by James Liao at the University of California, who developed E.Coli strains with genes coding for 2 enzymes that converted keto acides into aldehydes, and aldehydes into 1-butanol. When further manipulated, the microbes were able to produce butanol at much higher efficiencies, suitable for industrial production. In 2008, Gevo acquired an exclusive license to commercialize Liao's technology
Butamax Advanced Biofuels
In October 2013, Butamax™ Advanced Biofuels LLC, and Highwater Ethanol LLC, a leading producer of first generation ethanol, commenced a retrofit of Highwater’s ethanol plant in Lamberton, Minnesota for the production of biobutanol. In August 2014, phase one of the retrofit was completed, with the implementation of a proprietary Butamax technology to removes corn oil and prepare corn mash for fermentation.
Butamax and Highwater have entered into definitive agreements for license of Butamax’s patented corn oil separation technology, which is an integral part of a full retrofit to biobutanol production.
In April 2012, Butamax entered into collaboration with leading biofuels engineering and construction company Fagen Inc. for commercial-scale biobutanol production (via retrofit of ethanol plants) using Butamax technology.
In December 2011 Butamax™ Advanced Biofuels announced agreement on commercialization principles with Highwater Ethanol, the first entrant to the Butamax Early Adopters Group [Source: Butamax™ website].
In June 2006, DuPont and BP formed a partnership to develop new biobutanol production technology using lignocellulosic feedstocks. In July 2009 the partnership was cleared to take over the US company Biobutanol LLC. In 2009, BP and DuPont formed Butamax™ Advanced Biofuels, Wilmington. Butamax’s business model is to offer current ethanol producers proprietary biobutanol technology to permit improved biofuels growth and plant profitability.
In November 2009, BP and DuPont announced the formation of Kingston Research Ltd and the establishment of a £25 million advanced biofuels research centre in Hull for demonstration of biobutanol technology (which was scheduled to become operational in 2010).
The Abengoa method for production of butanol via catalytic condensation
The Abengoa production method involves catalytic condensation of ethanol to produce butanol through the Guerbet (2CH3-CH2OHCH3- CH2-CH2-CH2OH + H20) reaction. The company has developed and patented a catalyst that enables the manufacture of biobutanol competitively. In November 2013, Abengoa announced that it has produced butanol with 99.8% purity and plans to start commercial-scale produciton of butanol in 2015.
The process allows a butanol plant to be built as an 'add on' to an existing commercial ethanol plant, enabling the production of butanol without having to halt the ethanol production process
In the UK, Green Biologics has developed butanol-producing GM microbial strains and will integrate these into a novel fermentation process. This technology advance should result in a step change in the economic viability of the fermentation and enable the large scale production of Green Biologics' Butafuel™ product.
In January 2015, Green Biologics announced it has raised $76m towards acquisition and conversion of a 21 MMgy plant (Central MN Ethanol Co-op) based in Little Falls, Minnesota. Initially the facility will continue to produce ethanol, but aims to start production of of n-butanol and acetone in 2016.
In January 2012, Green Biologics Limited announced a merger with butylfuel™ Inc., US. The new company will operate under the Green Biologics name with headquarters in the UK, but with a strong operational presence and commercial focus in the US contributed by Green Biologics, Inc. [Source: Green Biologics]. Previously, Green Biologics was also involved in biobutanol development in India and China.
In April 2013, it was announced that Cobalt Technologies, Naval Air Warfare China Lake Weapons Division, Show Me Energy Cooperative and NREL will cooperate in a $2.5m pilot plant for conversion of 'switchgrass butanol' to military-grade jet fuel. In March 2012 it was announced that Albermale would manufacture biojet fuel from butanol, provided by Cobalt, using NAWCWD's alcohol to jet technology. Cobalt and Rhodia have formed a partnership to develop a demonstration plant in Brazil to convert sugarcane bagasse and other non-food feedstocks into biobutanol.