Experts agree: Environmental standards needed for biofuels

Oct 02, 2008

The United States lacks the standards to ensure that producing biofuels from cellulose won't cause environmental harm, says a distinguished group of international scientists. But because the industry is so young, policymakers have an exceptional opportunity to develop incentive programs to ensure the industry doesn't harm the environment.

"Environmental standards are needed now, before the industry moves out of its research and development phase," said Phil Robertson, Michigan State University professor of crop and soil sciences and lead author of the paper "Sustainable Biofuels Redux" published in the Oct. 3 issue of the journal Science. "With production standards and incentive programs, cellulosic biofuel cropping systems could provide significant environmental benefits."

Currently, all the commercial ethanol produced in the United States is made from grain, primarily corn. Robertson said that science has shown that almost all intensive grain-based cropping systems, as currently managed, cause environmental harm. As director of the MSU Long-Term Ecological Research program at the Kellogg Biological Station, part of Robertson's research focuses on management practices that can reduce these negative effects.

"We can soften the environmental impacts by using strategies such as no-till farming to minimize erosion and planting cover crops to sequester carbon and reduce nitrogen and phosphorus run-off," he said. "But few farmers use all of the best available practices because there are limited incentives –and many disincentives – for them to do so. As the technology to make biofuels from cellulose is refined and commercialized, we believe it's crucial that the industry and legislators adopt policies that reward environmentally sustainable production practices for cellulosic biofuels. It's equally important for grain-based systems."

This is one of the first times such a large and diverse group of internationally recognized scientists have spoken with one voice on the issue. The 23 authors are some of the world's top ecologists, agronomists, conservation biologists and economists. The paper is the result of discussions that took place at a spring workshop on the environmental sustainability of biofuels sponsored by the Ecological Society of America.

"This was truly a collaborative effort," Robertson said. "There are strong and divergent scientific opinions on the sustainability of biofuel cropping systems. That this group, with its diverse backgrounds and professional experiences, can come to consensus is remarkable. Decision-makers should take notice."

Source: Michigan State University

Explore further: Air in US cities getting cleaner, EPA says

add to favorites email to friend print save as pdf

Related Stories

Aviation offers a way forward in biofuels research

Jul 09, 2014

(Phys.org) —Biofuels researchers are increasingly thinking about how the energy market is changing, which challenges them to balance the basic science of new fuels with a more holistic view of the most ...

Recommended for you

Water crisis threatens thirsty Sao Paulo

4 hours ago

Sao Paulo is thirsty. A severe drought is hitting Brazil's largest city and thriving economic capital with no end in sight, threatening the municipal water supply to millions of people.

Climate change: meteorologists preparing for the worst

9 hours ago

Intense aerial turbulence, ice storms and scorching heatwaves, huge ocean waves—the world's climate experts forecast apocalyptic weather over the coming decades at a conference in Montreal that ended Thursday.

Sunlight, not microbes, key to CO2 in Arctic

9 hours ago

The vast reservoir of carbon stored in Arctic permafrost is gradually being converted to carbon dioxide (CO2) after entering the freshwater system in a process thought to be controlled largely by microbial ...

User comments : 0