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Lab partners with Native American carbon researchers

By R&D Editors | February 22, 2012

Garden Project

Lawrence Livermore National Laboratory has established a small garden project on Rongelap Island in conjunction with the Rongelap Atoll local government. The basic aim of the garden project is to assess the uptake of nuclear fallout radionuclides such as cesium-137 and strontium-90 into non-traditional locally grown foods such as leafy green vegetables. Image: Lawrence Livermore National Laboratory

Researchers from the Lawrence Livermore National Laboratory
and a team of American Indian scientists and engineers have partnered to study
the possible use of Black Earth technology, or Cpryo, to help mitigate the
uptake of radiocesium in locally grown foods in the Marshall Islands.

After World War II, the United
States conducted 66 nuclear detonations between 1946 and
1958, on once-pristine inhabited atolls of Bikini and Enewetak in the northern Marshall Islands.
The detonations contaminated the islands with radioactive fallout. Long-lived
radionuclides such as radiocesium remain at different levels in indigenous
terrestrial plants that may be used as food.

To help reduce levels of radiation exposure and support
ongoing efforts by Marshall Islanders to resettle their ancestral homelands,
the contaminated coral soils need to be remediated as a best practice under the
general principles of ALARA—As Low As Reasonably Achievable.

“Terra Mulata, an ancient indigenous Amazon Black Earth
technology, will be investigated at Lawrence Livermore and on the atolls this
year,” said Dan Hawk, a climate change expert, and lead researcher within
the American Indian team. “Our team expects carbon, the main ingredient of
Terra Mulata, to significantly improve plant productivity as well as
water/nutrient retention of coral soils, and potentially help decrease radiocesium
uptake in plants.”

Together with existing recommendations on remediation of
radiocesium uptake into tree-crop products such as coconut, this work may provide
an alternative method to using large amounts of chemical fertilizers as opposed
to a one-time application of Cpryo, especially for use in home vegetable
gardens, said Terry Hamilton, head of LLNL’s Marshall Island Program.

“We envision that this work will ultimately support
food security and economic development of island communities, and provide added
assurances on radiation safety and health,” Hawk said. “We hope these
efforts will help bring about dietary change to combat rampant indigenous diabetes;
as the Marshall Islands
has one of the highest rates of diabetes in the world.”

SOURCE

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