Artificial Photosynthesis Developed

Panasonic said on Monday it has created a new system for artificial photosynthesis that can remove carbon dioxide from the air almost as well as plants do, as part of the company’s entry into an industry-wide trend toward greener tech.

The company said its system uses nitride semiconductors, which are widely used in LEDs (light-emitting diodes) to convert light to energy, and a metal catalyst to convert carbon dioxide and water to formic acid, which is widely used in dyes, leather production and as a preservative.

Carbon dioxide is a major pollutant and considered to be a main cause of the “greenhouse effect,” which most climate scientists believe causes global warming.

Panasonic has struggled with its traditional electronics business and has made eco-friendly products and practices the key element in its turnaround plan. The company is hoping to leverage its large rechargeable battery and solar businesses, while joining the industry in embracing technologies that are friendlier to the environment. The issue is an important one with customers, as demonstrated by the the outcry earlier this month when Apple was forced to rejoin a green standards program when clients complained about its earlier withdrawal.

Panasonic said the system can convert carbon dioxide and water to formic acid with an efficiency of 0.2 percent in laboratory conditions, which is similar to the conversion rate for green plants. The efficiency refers to the portion of the incoming light energy stored in materials produced during the process.

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Data Center Emissions Concerns Citizens

Some residents of Quincy, Washington, the location of massive data centers operated by Microsoft, Yahoo and others, are growing concerned about pollution from backup diesel generators at the data centers, and on Wednesday they’ll have the chance to discuss the issue.

The Washington State Department of Ecology is conducting a public meeting on Wednesday evening in Quincy for residents to voice their concerns over on an application from Dell for permission to use 28 generators powered by diesel engines.

Quincy, a town of around 6,000 people, will have 141 back-up generators once those belonging to Dell, and others that have been permitted or are in line for permission, are put in place. While the generators are designed to be used only in the rare case of an electricity outage, the data center operators turn them on regularly for testing.

On average, the companies are permitted to turn on each generator for 103 hours per year. If they use that maximum running time, data center generators in Quincy would run for the equivalent of 40 hours per day on average.

The Department of Ecology says diesel emissions, when breathed in, have been known to create or worsen a variety of health problems, including heart disease, asthma and
lung cancer.

Some residents, including former mayor Patty Martin, wonder about the health impact of the diesel emissions on the community. She thinks the generators should use the same types of devices to reduce emissions that are required by other Washington cities such as Olympia and Moses Lake.

Such devices aren’t necessary in Quincy, said Karen Wood, section supervisor for air quality in Eastern Washington for the Department of Ecology. Because Olympia is a much bigger city it already has high diesel emissions from other sources, so a new data center there was required to reduce its emissions, she said.

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