Friday 22 February 2008

Biofuels 'need strict standards'

Biofuels should only be produced if they meet strict environmental standards, an international group of lawmakers have concluded.

The legislators said the fuels also had to deliver significant savings of greenhouse gas emissions.

If such criteria were met, they said there should be an urgent review of the tariffs that currently block imports into markets such as the EU and US.

The forum was hosted by Brazil, one of the world's biggest biofuel producers.

Biofuels have become a highly controversial issue, with claims that the rapid expansion of energy crops could threaten global food security, and add further pressure to sensitive ecosystems including rainforests.

It is also argued that in some cases the benefits to the climate of burning plant material instead of fossil fuels are outweighed by the energy needed to produce and transport biofuels, and by the release of carbon from soils by changes in land use.

The supporters of Brazilian ethanol argue, however, that huge areas of degraded cattle pasture are available to grow the crop, and that expansion of biofuel production does not require significant conversion of native ecosystems.

The meeting also failed to agree a framework for a new global agreement on measures to tackle climate change beyond 2012, with the Chinese delegation apparently reluctant to pre-empt the position of its government in forthcoming negotiations.

Lord Jay, the former head of the British Foreign Office, who had led the efforts to agree the framework, said there had been consensus over his claim that a massive increase was needed in the funds available to poorer countries to cope with the impacts of climate change.
full article

Tuesday 5 February 2008

The £15,000 three-wheeled electric car that can go faster than a Porsche


A car manufacturer has announced they are on the verge of creating a three-wheeled electric sports car that can travel faster than a Porsche.

The enviromentally friendly Zap Alias will cost just £15,000 and does 0 to 60mph in just 5.7 seconds with a top speed of 156mph.
The futuristic looking two-seater is being developed with the help of British car company Lotus. It should go on sale next year though speculation is rife that the launch of the vehicle will be delayed.

It is powered by two electric wheel motors, one driving each of the car's front wheels. Unlike a Reliant Robin the single wheel is at the back. Together the Alias's motors generate an impressive 321.85 horse power - as much as a Porsche 911 Carrera which costs £60,000.
full article

The hypersonic plane


he project is part of an EU drive to push forward the boundaries of air travel. Scientists were asked to find out if it was possible to build a commercial plane that used the sort of technology more closely associated with travel to the edge of space and beyond.

Oxfordshire-based Reaction Engines designs and develops space transport and hi-tech propulsion systems. Its directors are experts in fields ranging from space rockets and weapons systems to nuclear power. One of the firm's main projects is the development of Skylon, an unpiloted reusable spaceplane intended to provide inexpensive and reliable access to space, which is expected to take approximately 10 years to develop and be capable of transporting 12 tonnes of cargo into space.
Reaction Engines estimates that the cost of the flight would be similar to a current first class fare. Moreover, the company claims, the plane would not leave much of a carbon footprint.
full article

biohydrogen production from palm oil waste

A few years ago, we referred to the large potential for the production of bioproducts and next-generation biofuels from the waste biomass that accumulates at palm oil plantations and mills. The palm oil tree is one of the most productive plants on the planet.
A group of researchers from the Universiti Sains Malaysia now finds that this vast stream of waste biomass holds a considerable potential for the efficient and cost-competitive production of renewable biohydrogen via a process known as supercritical water gasification (SCWG) - of growing interest to bioenergy researchers. The process yields hydrogen twenty times less costly than H2 from electrolysis of water when the primary energy comes from renewables like wind or solar, and one fifth less costly than H2 obtained from steam reforming natural gas - the most likely candidate for large scale hydrogen production in the future. The chemical and energetic properties of the residual palm biomass, especially its high moisture content, make it a 'perfect' feedstock for the novel gasification process. The energy balance ('EROEI') of the biohydrogen was found to be 9.9, indicating a highly efficient use of the resource. The researchers discuss their findings in a recent issue of the scientific journal Energy Policy.
full article