SoCalGas, Scripps Institution Of Oceanography Explore System Using Algae To Capture Carbon Dioxide From Natural Gas Equipment And Power Plants

Algae could absorb pollution emissions at the source

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Jul 30, 2012, 01:00 ET

LOS ANGELES, July 30, 2012 /PRNewswire/ -- Southern California Gas Co. (SoCalGas) and Scripps Institution of Oceanography at UC San Diego (Scripps) have entered into an agreement focusing on the design of an innovative system in which algae consume carbon dioxide (CO₂) emissions from natural gas combustion and cost-effectively convert it into valuable byproducts such as biomethane, biodiesel and animal feed.

For several years, researchers at Scripps, a member organization of the San Diego Center for Algae Biotechnology, and a number of commercial companies around San Diego and elsewhere, have been studying how algae can most efficiently be developed into a clean, renewable biofuel to one day replace non-renewable fossil fuels. Taking this research a step further, Scripps' researchers hope to leverage algae's natural ability to absorb CO₂in the environment and convert it into oil rich biomass or biomethane or refined into fossil fuel replacements. After extracting the oils for biodiesel, the remaining biomass can be sold as a safe, protein-rich animal feed.

The new collaboration between Scripps and SoCalGas includes an investigative research and systems engineering study to explore how algae production systems currently in development could most effectively capture industrial CO₂ emissions. Targeted CO₂ sources include: natural gas power plants, large engines used in natural gas compression and water pumping and boilers used to produce steam for industrial processes such as enhanced oil recovery.

"We are very excited to enter into this collaboration with Southern California Gas Company and bring our world-class scientific and engineering analysis capabilities to bear in assessing state-of-the-art algal culture systems for CO₂ capture from point sources," said Dominick Mendola, a senior development engineer in the laboratory of Greg Mitchell, a Scripps biologist who has explored marine algae for their potential as a new biofuel source. "If the Phase I analysis proves such systems can be safe and economical, we then hope to enter into a Phase II agreement to help SoCalGas build and operate a module of a commercially scaled system, and test its capabilities at a site to be selected within Southern California."

"We are strongly committed to supporting the development of zero and near-zero- emission natural gas technologies. Recovering CO₂ from combustion and turning it into commodities such as biomethane, biodiesel or a high-quality animal feedstock is great for the environment while creating valuable products," said Hal D. Snyder, vice president of customer solutions for SoCalGas. "None of this is easy, but working with world-class scientific organizations like Scripps Institution of Oceanography and UC San Diego greatly improves our chances of success."

About Southern California Gas Company

SoCalGas has been delivering clean, safe and reliable natural gas to its customers for more than 140 years. It is the nation's largest natural gas distribution utility, providing service to 20.9 million consumers connected through 5.9 million meters in more than 500 communities. The company's service territory encompasses approximately 20,000 square miles throughout Central and Southern California, from Visalia to the Mexican border. SoCalGas is a regulated subsidiary of Sempra Energy (NYSE: SRE).

About Scripps Institution of Oceanography

Scripps Institution of Oceanography at University of California, San Diego, is one of the oldest, largest and most important centers for global science research and education in the world. Now in its second century of discovery, the scientific scope of the institution has grown to include biological, physical, chemical, geological, geophysical and atmospheric studies of the earth as a system. Hundreds of research programs covering a wide range of scientific areas are under way today in 65 countries. The institution has a staff of about 1,400 and annual expenditures of approximately $170 million from federal, state and private sources. Scripps operates robotic networks, and one of the largest U.S. academic fleets with four oceanographic research ships and one research platform for worldwide exploration.

About UC San Diego

Fifty years ago, the founders of the University of California, San Diego, had one criterion for the campus: It must be distinctive. Since then, UC San Diego has achieved the extraordinary in education, research and innovation. Sixteen Nobel laureates have taught on campus; stellar faculty members have been awarded Fields Medals, Pulitzer Prizes, McArthur Fellowships and many other honors. UC San Diego—recognized as one of the top ten public universities by U.S. News & World Report and named by the Washington Monthly as number one in the nation in rankings measuring "what colleges are doing for the country"—is widely acknowledged for its local impact, national influence and global reach. UC San Diego is celebrating 50 years of visionaries, innovators and overachievers. www.50th.ucsd.edu

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SOURCE Southern California Gas Co.