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Wednesday, August 22, 2007

Researchers look at impacts of fossil fuel choices; find LNG to have high carbon footprint

A team of Carnegie Mellon University researchers report that the choices U.S. officials make today could limit how the nation's future energy needs are met and could cost consumers billions in idle power plants and associated infrastructure systems. Their findings about decisions on liquefied natural gas (LNG) are important for the bioenergy community because in the near future ultra-clean carbon-negative biomethane production could be fused with existing LNG production sites. Biopact will share preliminary results from a study on these options at the upcoming Sparks & Flames energy conference at which the organisation will chair a session on carbon-negative energy, part of the Gas Storage & Trading Summit (earlier post).

In the upcoming September 1 edition of the journal Environmental Science and Technology, Paulina Jaramillo, W. Michael Griffin and H. Scott Matthews compared the greenhouse gas as well as SOx, and NOx life-cycle emissions for different fossil fuel combinations used to generate electricity: natural gas, liquefied natural gas (LNG), synthetic natural gas (SNG) via coal gasification-methanation, and coal. The objective of this study was to compare the emissions of NG/LNG/SNG versus coal.

At first instance, their estimates suggest that with the current fleet of power plants, a mix of domestic NG, LNG, and SNG would have lower GHG emissions than coal. But if advanced technologies with carbon capture and sequestration (CCS) are used coal and a mix of domestic NG, LNG, and SNG would have very similar life-cycle GHG emissions. For SOx and NOx they find there are significant emissions in the upstream stages of the NG/LNG life-cycles, which contribute to a larger range in SOx and NOx emissions for NG/LNG than for coal and SNG. Thus, LNG imported from foreign countries and used for electricity generation could have 35 percent higher lifecycle greenhouse gas emissions than coal used in advanced CCS power plants.
Investing in LNG infrastructure today could make sense if it helps moderate natural gas prices and keeps existing natural gas power plants running. But making this investment ultimately locks us into certain technologies that make it harder for us to change paths in an increasingly carbon-constrained world. - H. Scott Matthews, associate professor in Carnegie Mellon's Civil and Environmental Engineering Department.
The 1990s saw a surge in construction of natural gas power plants, fueled by cheap natural gas, low investment requirements and the idea that natural gas was less carbon-intensive than coal. Since these plants were constructed, natural gas prices have skyrocketed as the North American natural gas supply has become more limited. These gas plants are now operating at a very low capacity, fueling the energy industry's interest in increasing gas supply by using LNG:
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Those decisions are complicated by the fact that natural gas prices may stay high because of maturing North American gas fields. Natural gas production in North America has been flat or down in each of the past six years, according to the federal government's Energy Information Administration. Increasingly, domestic natural gas will be drawn from nontraditional and more expensive sources that require the development of more complex networks to extract and deliver it to the U.S. market.

However, the increased imports of LNG and all of its indirect impacts could eliminate the environmental benefits of natural gas over coal when future carbon mitigation technologies such as carbon capture and storage (CCS) are adopted.

The researchers point out that LNG has many indirect impacts compared to domestic gas. LNG is extracted in a foreign country, liquefied, put into a tanker to cross oceans, and then regasified and put into pipelines when it reaches the U.S. Each of these steps leads to indirect environmental impacts, such as carbon dioxide emissions from changing from gas to liquid and back. In addition, the facilities and tankers necessary to liquefy, move and regasify the natural gas expected are not plentiful and those in the works will not be up-and-running for several years.

The Carnegie Mellon research team also argues that the U.S. shouldn't rush to invest large amounts in a new infrastructure, such as the LNG infrastructure, without analyzing all the indirect implications of those investments compared to alternative supply options. In addition, utilities and the government should put more effort into conservation and energy efficiency that could help reduce the need for large investments. As the options grow more complicated, the choices become harder and harder.

Carbon-negative biomethane
The Carnegie Mellon suggestions are fundamental, but they do not take into account the emergence of a new energy concept, based on coupling biogas production to LNG export infrastructrues. Biopact is currently conducting a basic lifecycle and economic feasibility assessment of the opportunity to produce biogas close to such existing LNG facilities. The concept consists of capturing and storing carbon dioxide from biogas which results in carbon-negative and ultra-clean biomethane (schematic, click to enlarge). This upgraded bio-based gas is then integrated into the existing LNG upstream.

Given the fact that separating CO2 from biogas before it is combusted is considerably less costly than capturing carbon from fossil fuels, we predict it might become a feasible option to couple biogas with CCS to existing LNG infrastructures. Storage of the carbon dioxide can occur in oil and gas fields to enhance the recovery of these resources, or in (onshore) saline aquifers which hold large potential and are found to be abundant near some of the largest current LNG sites in the Global South (more here: "Deep geological CO2 storage: principles, and prospecting for bioenergy disposal sites", *.pdf).

In December of this year, the United Nations Climate Change Conference will convene in Bali, Indonesia, to prepare the post-Kyoto future. This meeting will be crucial for the future of carbon markets. Some are working towards the adoption of measures that allow bioenergy producers to bank in on carbon-negative biofuels. It is within this context that the commercial feasibility of carbon-negative biogas production coupled to LNG will be determined. If enough voices favor a transition towards a global carbon market, then such projects might become profitable.

Biopact will share preliminary results of its assessment at the upcoming Sparks & Flames energy conference at which the organisation will chair a session on carbon-negative energy, part of the Gas Storage and Trading Summit.

The Carnegie Mellon insights on the GHG emissions of LNG might have to be adapted with these new perspectives in mind, and vice-versa.

On another note, even though co-firing biomass with coal is already practised on a relatively large scale in Europe, the study did not look at the use of biomass in CCS-power plants.

References:
Jaramillo, P.; Griffin, W. M.; Matthews, H. S., "Comparative Life-Cycle Air Emissions of Coal, Domestic Natural Gas, LNG, and SNG for Electricity Generation", Environ. Sci. Technol. 2007; ASAP Article; DOI: 10.1021/es063031o

Haszeldine, R. S.,"Deep geological CO2 storage: principles, and prospecting for bioenergy disposal sites", Draft for Paris IEA meeting - September 24, 2004

Biopact: Pre-combustion CO2 capture from biogas - the way forward? - March 31, 2007.


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Biodiesel in Thailand less costly than petro-diesel, as Bangchak Petroleum plans new facility

Some interesting numbers come from Thailand, where Bangchak Petroleum Plc plans to invest between 900 million and 1 billion baht (€20.5-22.8/$27.8-30.9 million) to build a biodiesel plant by the end of this year.

Patiparn Sukorndhaman, Bangchak's senior executive vice-president, told reporters that biodiesel produced locally costs 70 satang (70 cents) per litre less than conventional diesel. Since 2005, diesel has seen a continuous price hike, with the government feeling the pinch of subsidizing the fuel. First-generation biodiesel being competitive at current prices, Sukorndhaman thinks the alternative fuel will become increasingly popular locally.

Starting in April next year, the Thai government will call on local oil companies to switch all their diesel products to B2, a blend of 2% biodiesel and 98% diesel fuel. The move would encourage and build up confidence among motorists to use the much cheaper B5 fuel currently marketed by Bangchak Petroleum. Bangchak Petroleum offers B5 at 300 of its fuel stations and is planning to increase the number to 500 before the end of 2007.

A recent project coordinated by the Thai government and executed by Bangchak Petroleum in the city Chiang Mai, saw 1,300 public-transport buses utilizing unsubsidized B2, which was 0.5 bath per liter less costly than diesel (overview of this and other projects).

The biodiesel currently produced by the company relies on waste vegetable oils. Bangchak Petroleum has opened units to buy used vegetable oils from towns and communities for the production of biodiesel at its oil refinery in Sukhumvit. It also sources waste oil from various markets in Bangkok.

Bangchak Petroleum's new plant, with a daily production capacity of 300,000 litres per day (78,000 gallons), will use waste and palm oil. It is scheduled to be completed within 20-23 months. The plant would be located near Bangchak's existing oil storage facilities in Bang Pa-in, Ayutthaya (see map, click to enlarge), to save the company's logistics cost:
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Bangchak is now the leader in Thailand's biodiesel market, with a share of 78.6% of total market volume of 30 million litres per month, followed by PTT Plc with 21.4%. Patiparn said the company's biodiesel production output rose by 47% to 28.7 million litres per month over the past six months.

Of the total investment in the new plant, up to 300 million baht would come from the company's capital and the rest from loans, which would lift its debt-to-equity ratio to two times from 0.6 currently.

Patiparn said Bangchak forecast its total revenue would grow 15% this year to 107.57 billion baht although its gross refining margin would decline to below US$2.90 per barrel this year on average compared to more than $3 per barrel on average last year.

The revenue growth would be contributed by the company's promising exports of fuel oil, which account for 30% of its total output, to China. This year, it will ship around 25,000 barrels per day of fuels to China, almost double the 14,000 barrels per day last year. The export price is now around $8-10 per barrel.

Nevertheless, the exports would have to be terminated in the fourth quarter when its product quality improvement (PQI) facilities have been completed. The facilities will transform fuel oil into more lucrative lighter fuel products including gasoline and diesel.

Bangchak will shut down two-thirds of its production capacity for 12 days in February next year, which will cause its capacity to decrease to 40,000-50,000 barrels per day from 70,000 barrels currently.

Bangchak now ranks fourth in the local fuel retail market, with a 12.5% share or 180 million litres per month, after PTT (32.9%), Esso (17.5%), and Shell (15.9%).

The company is also investing in the production of ethanol made from cassava.

References:

Bangchak Petroleum: renewable energy.

Bangkok Post: Bangchak plans biodiesel plant - B900m facility to be located in Ayutthaya - August 23, 2007.


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USDA awards $97 million in loans for bioenergy projects

U.S. Agriculture Secretary Mike Johanns yesterday announced the award of US$97 million in guaranteed loans to help businesses in Georgia, Illinois and North Carolina create jobs and develop bioenergy systems.

The four recipients received funding through the United States Department of Agriculture's Renewable Energy and Energy Efficiency (Section 9006) guaranteed loan program and the Business and Industry (B&I) guaranteed loan program. The Section 9006 program provides financial assistance to agricultural producers and rural small businesses to install renewable energy projects or make energy efficiency improvements. The Business and Industry program complements the existing private credit structure by guaranteeing loans that will provide lasting community and economic benefits, such as for business expansions.

The selected projects include:
  • Clean Burn Fuels LLC of North Carolina, which was approved to receive $10 million from the Section 9006 program and a $25 million B&I loan guarantee to construct a new first generation ethanol plant that is expected to produce 60 million gallons (227 million liters) of ethanol per year. The plant has potential room for expansion to 220 million gallons (832 million liters) per year. Clean Burn Fuels expects work to begin in the second quarter of 2007.
  • Blackhawk Biofuels LLC, Illinois, is approved for a $7.5 million Section 9006 loan and a $20 million B&I loan to build and operate a 30-million-gallon (114 million liters) first generation biodiesel facility. Soybean oil, other vegetable oils, and possibly animal fat will be used as feedstocks.
  • Appling County Pellets from Georgia is approved to receive a $10 million Section 9006 loan and a $9.5 million B&I loan to produce up to 130,000 metric tons of wood pellets to be sold in domestic and international markets.
  • National Trail Biodiesel, Illinois, also approved to receive a $10 million Section 9006 loan and a $5 million B&I loan to build and operate a 30-million-gallon-per-year (114 million liters) biodiesel production facility in Jasper County. The plant will use soy oil.
USDA Rural Development's mission is to increase economic opportunity and improve the quality of life for rural residents:
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Rural Development has invested more than $76.8 billion since 2001 for equity and technical assistance to finance and foster growth in homeownership, business development, and critical community and technology infrastructure.
These funds are part of USDA's ongoing commitment to bring greater economic opportunities to rural citizens. They will help rural communities create jobs and strong, competitive business enterprises. - Mike Johanns, U.S. Agriculture Secretary
More than 1.5 million jobs have been created or saved through these investments.



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Canada's government invests $1 million in 12 biofuel projects in Quebec

Canada's new government announced it is investing $992,563 in 12 projects designed to help the nascent biofuels industry in Quebec. Through the Biofuels Opportunities for Producers Initiative (BOPI), organizations will receive funding to conduct feasibility studies and develop business plans for biofuel projects.

BOPI is a two-year $20 million commitment by Canada's new government designed to provide farmers and rural communities with opportunities to participate in, and benefit from, increased Canadian biofuels production. The initiative helps agricultural producers and others develop sound business proposals, as well as undertake feasibility or other studies to support the creation and expansion of biofuel production capacity. It is delivered through the industry councils in each province and territory that administer Agriculture and Agri-food Canada's Advancing Canadian Agriculture and Agri-Food Program.

On July 5, 2007, Prime Minister Harper announced that the government will provide up to $1.5 billion over nine years to support the production of renewable fuels. In addition, since coming to office, Canada's New Government has announced it will invest $500 million in biofuels and bio-products initiatives to assist farmers and rural communities to seize new market opportunities in the bioeconomy (earlier post).

Canada aims for a 5 percent average renewable fuel content in transportation fuels by 2010 and intends to regulate a 2 percent requirement for renewable content in diesel fuel and heating oil by 2012.

Small projects
Funding under BOPI for Quebec is provided through the Conseil pour le developpement de l'agriculture du Quebec (CDAQ). The 12 selected projects include:
  • $300,000 to the Federation des producteurs de bovins du Quebec to develop engineering phases leading to the construction of an integrated facility for processing slaughter and dead animal by-products into biofuel.
  • $187,808 to Nutrinor, Cooperative agroalimentaire du Saguenay, Lac St-Jean to develop a business plan and required studies for construction of a biodiesel microproduction facility.
  • $108,800 to Societe 9043-3616 Quebec inc. St-Alexis-de-Montcalm - Lanaudiere to develop a feasibility study and business plan for the construction of a biofuel facility from existing infrastructures.
  • $98,393 to Potager Meunier inc., St-Roch-de-L'Achigan - Lanaudiere to develop a feasibility study concerning the construction of a pilot ethanol and by-products production facility from willow crops:
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  • $71,561 to the Federation des producteurs de cultures commerciales du Quebec to position grain producers in Quebec and facilitate their uptake of biofuel market opportunities.
  • $70,256 to the Ferme Gaston Roy, Sainte-Marguerite to develop a feasibility study for a biodiesel production unit in the Quebec City region.
  • $42,999 to La Cooperative federee du Quebec, Montreal to contribute to the gathering of information for the preparation of a biofuel development policy and feasibility study for the production of ethanol and biodiesel.
  • $39,375 to Serge Quintal, Saint-Ignace-de-Standbridge to develop a feasibility study and production of a business plan for the construction of a biodiesel production plant.
  • $23,800 to the Syndicat des producteurs de cultures commerciales du Centre-du-Quebec to develop a feasibility study concerning biodiesel production from oilcrops oil.
  • $19,580 to the Institut de recherche et de developpement en agroenvironnement, Ste-Foy to determine the potential for biomass production from various vegetable species and the quality of their ligno-cellulosic complex for ethanol processing.
  • $16,000 to Les Huiles naturelles d'Amérique, Les Cèdres to develop a feasibility study for biofuel production in a small-size facility, Suroît region (in the western Montérégie).
  • $13,991 to Coopérative agricole Profid'Or, Joliette - Lanaudière to develop a feasibility study concerning the construction of an ethanol production facility from sugar beet.
Christian Paradis, Secretary of State for Agriculture announced the investment on behalf of the Gerry Ritz, Minister of Agriculture and Agri-Food and Minister for the Canadian Wheat Board. He said: "Canada's New Government is helping to ensure that producers are able to participate in and benefit from increased biofuels production in Canada. The renewable energy industry holds great potential for enhancing the economic prosperity of Quebec."

For his part, Mr. Laurent Pellerin, Chair of the Conseil pour le developpement de l'agriculture du Quebec (CDAQ), which administers the BOPI program in Quebec said: "Through their involvement in developing biofuels, Quebec's farm producers have once again shown that they share the environmental concerns of their fellow citizens while exploring new markets,"

Background
The Government of Canada is committed to establishing regulations that will require 5 percent average renewable fuel content in transportation fuels by 2010 and intends to regulate a 2 percent requirement for renewable content in diesel fuel and heating oil by 2012. Agriculture and Agri-Food Canada (AAFC) wants to ensure that these targets are implemented in ways that result in the greatest possible benefit to the agricultural sector, including ownership of biofuels production facilities by agricultural producers.

On July 17, 2006, Canada's New Government announced $10 million in funding for the Biofuels Opportunities for Producers Initiative (BOPI) to be delivered through the industry councils in each province and territory that administer the Advancing Canadian Agriculture and Agri-Food (ACAAF) Program.

Due to the high demand from producers and industry, on March 3, 2007, Canada's New Government announced an additional $10 million in BOPI funding. An additional $3 million was made available last fiscal year to fund additional projects and $7 million is being provided this fiscal year (2007-2008) for new BOPI project proposals, bringing the total up to $20 million over the two fiscal years.

The BOPI, delivered through the industry councils in each province/territory that administer AAFC's ACAAF Program, was developed to help meet this goal. Individual project funding is capped at $300,000 and at least 25 per cent of the project cost must be provided by the industry, of which one third must come from producers.

References:
Conseil pour le développement de l'agriculture du Québec

Biofuels Opportunities for Producers Initiative


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BP Australia signs large biofuel supply agreement, becomes leading marketer

BP Australia and Manildra Energy Australia announced today one of Australia’s largest biofuels supply agreements, a deal which will result in nearly half of BP’s fuel sales in New South Wales containing renewable ethanol.

BP will receive from Manildra’s Bomaderry ethanol plant 40 million litres of ethanol over the next year, with deliveries to commence this month. The agreement with Manildra combined with BP’s existing 15 million litre ethanol supply deal with CSR makes BP the largest marketer of biofuels in Australia.

Both BP and Manildra have also commenced negotiations to extend the agreement for a further two years.

BP’s ethanol fuel blend has the following properties and will be marketed as follows:
  • The new BP Unleaded 91 is a specially formulated 91 octane unleaded petrol blended with up to 10% renewable ethanol.
  • BP will offer new BP Unleaded 91 to New South Wales motorists at a three cents per litre discount through the company’s Biorewards program.
  • By the end of the year (2007) all of the 50 BP branded service stations in New South Wales will be selling new BP Unleaded petrol in place of regular Unleaded petrol.
The ethanol will be blended at the Newcastle and Parramatta fuel terminals to result in the BP Unleaded 91 fuel that will be sold across New South Wales. BP is investing approximately $4 million to enable the delivery, storage and blending of ethanol to take place at both of these terminals. The new facilities at BP’s Newcastle Terminal commenced operation earlier this month, with Parramatta’s facilities to be operational towards the end of this year.

BP has been marketing ethanol blended fuel in Queensland since 2001 and will now be able to commence the rollout to BP branded service stations in New South Wales, with the fuel to be available at about 50 additional locations by the end of the year. Over the next few years BP’s planned rollout of ethanol blended fuel in New South Wales will see this number of service stations at least doubling:
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BP Australia's president said that the company’s actions demonstrated its commitment to create a sustainable future for biofuels in Australia.
Increasing the supply of biofuels is part of BP’s long term strategy to provide Australian motorists with the choice of a range of cleaner fuels. Selling more ethanol blended fuel at more service stations is just one part of our strategy. Supplying large volumes of biofuels also requires large scale supply agreements and the investment in necessary infrastructure. - Gerry Hueston, BP Australia President
Getting all three necessities in place has required considerable work over the past year. This commitment from BP has ensured that today’s announcement ticks all of the boxes for bringing biofuels into the mainstream in a way that ensures it is around to stay.

Manildra is a major Australian producer of food grade and industrial alcohol for the chemical and pharmaceutical industries.

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Storing hydrogen in solid ammonia borane pellets

Hydrogen may prove to be the fuel of the future in powering the efficient, eco-friendly fuel cell vehicles of tomorrow. The clean gas can be made from renewables such as biomass, wind and solar. However, developing a method to safely store, dispense and easily 'refuel' the vehicle's storage material with hydrogen has baffled researchers for years. A new and attractive storage medium being developed by Pacific Northwest National Laboratory scientists may provide the 'power of pellets' to fuel future transportation needs.

The Department of Energy's Chemical Hydrogen Storage Center of Excellence is investigating a hydrogen storage medium that holds promise in meeting long-term targets for transportation use. As part of the center, PNNL scientists are using solid ammonia borane (NH3BH3), or AB, compressed into small pellets to serve as a hydrogen storage material. Each milliliter of AB weighs about three-quarters of a gram and harbors up to 1.8 liters of hydrogen. Researchers expect that a fuel system using small AB pellets will occupy less space and be lighter in weight than systems using pressurized hydrogen gas, thus enabling fuel cell vehicles to have room, range and performance comparable to today's automobiles.
With this new understanding and our improved methods in working with ammonia borane, we're making positive strides in developing a viable storage medium to provide reliable, environmentally friendly hydrogen power generation for future transportation needs. - Dave Heldebrant, PNNL
A small pellet of solid ammonia borane (240 mg), as shown in the picture, is capable of storing relatively large quantities of hydrogen (0.5 liter) in a very small volume:
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PNNL scientists are learning to manipulate the release of hydrogen from AB at predictable rates. By varying temperature and manipulating AB feed rates to a reactor, researchers envision controlling the production of hydrogen and thus fuel cell power, much like a gas pedal regulates fuel to a car's combustion engine.

Once hydrogen from the storage material is depleted, the AB pellets must be safely and efficiently regenerated by way of chemical processing. This 'refueling' method requires chemically digesting or breaking down the solid spent fuel into chemicals that can be recycled back to AB with hydrogen.

Earlier, other scientists found a way to convert carbohydrates directly into biohydrogen using synthetic enzymes. Their findings may one day allow us to store dry starch as a biofuel in our gas cars, which would be an equally safe way to 'store' hydrogen - or at least its feedstock (earlier post).


Image: A small pellet of solid ammonia borane (240 mg), as shown, is capable of storing relatively large quantities of hydrogen (0.5 liter) in a very small volume. Credit: Pacific Northwest National Laboratory

References:
Donald M. Camaioni, David J. Heldebrant, John C. Linehan, Wendy J. Shaw, Jun Li, Daniel L. DuBois, and Tom Autrey; "Toward regenerating ammonia borane from spent fuel” (FUEL 137), 234th American Chemical Society National Meeting, Boston - August 21, 2007.

David J. Heldebrant, Tom Autrey, John C. Linehan, Donald M. Camaioni, Scot D. Rassat, and Feng Zheng; “Effect of additives on the thermolysis of ammonia borane” (FUEL 164), 234th American Chemical Society National Meeting, Boston - August 21, 2007.

PNNL: Pellets of power designed to deliver hydrogen for tomorrow's vehicles - August 21, 2007.


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