After Fukushima nuclear accidents, a fear of radioactive substances are spreading in the world. Their uncontrolled release may contaminate land, underground water, and ocean. If humans ingest a radioactive substance, it's accumulated in their body and believed to increase one's lifetime risk of developing certain types of cancer. Radioactive water from nuclear accident mainly contains cesium-137, and cesium-137 reacts with water producing a water soluble compound. To remove radioactive cesium in water, zeolite is considered one of the best absorbent materials to treat radioactive wastewater since zeolite can efficiently remove cesium by ion exchange. It also has high selectivity than other ions so it can be used for removing cesium ion in seawater. To increase the removal rate of cesium, we invented a zeolite mixed with carbon electrode and investigated the removal rate of cesium ion in comparison with applying voltage.

Removal of cesium ion by zeolite modified carbon electrode

244th National Meeting (2012)

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