Published May 2019 | Version v1
Miscellaneous Metadata-only

Effects of ultrafine bubbles on the aerosols removal efficiency due to pool scrubbing

Creators

  • 1. Tokyo University, Tokyo (Japan)

Description

Radioactive aerosols which show strong diffusion and migration have become one of the most difficult problem during the decommissioning of Fukushima Daiichi Nuclear Power Plant. Although cutting the debris underwater can suppress the generation of radioactive aerosols due to pool scrubbing to some extent, the removal efficiency of bubble columns can be influenced by many factors. In this research, ultrafine bubbles who have long residence time, large specific surface area were introduced into a simple scrubber. The effects of ultrafine bubbles on the aerosols removal efficiency during pool scrubbing was studied for TiO2 aerosols (200nm∼300nm). To clarify the effects ultrafine bubbles, three kinds of water were prepared, namely, distilled water, nanobubble water, and microbubble water. As the result, Microbubble water has the highest removal efficiency and distilled water has the lowest removal efficiency. The improved removal efficiency by ultrafine bubbles may indicate a new method for control of radioactive aerosols in the decommissioning of Fukushima Daiichi NPP. (author)

Part of:
Proceedings of the 27th international conference on nuclear engineering (ICONE-27)

Additional details

Publishing Information

Imprint Title
Proceedings of the 27th international conference on nuclear engineering (ICONE-27)
Imprint Pagination
[4028 p.]
Journal Page Range
6 p.

Conference

Title
27. international conference on nuclear engineering
Acronym
ICONE-27
Dates
19-24 May 2019
Place
Tsukuba, Ibaraki (Japan)

INIS

Country of Publication
Japan
Country of Input or Organization
Japan
INIS RN
51023688
Subject category
S21: SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS;
Resource subtype / Literary indicator
Conference, Non-conventional Literature
Descriptors DEI
BUBBLES; CUTTING; FILTERS; FISSION PRODUCTS; FLOW RATE; FUKUSHIMA DAIICHI NUCLEAR POWER STATION; PARTICLE SIZE; RADIOACTIVE AEROSOLS; REACTOR DECOMMISSIONING; REMOVAL; SCRUBBING; UNDERWATER OPERATIONS; WET SCRUBBERS
Descriptors DEC
AEROSOLS; COLLOIDS; DECOMMISSIONING; DISPERSIONS; EQUIPMENT; ISOTOPES; MACHINING; MATERIALS; POLLUTION CONTROL EQUIPMENT; RADIOACTIVE MATERIALS; REACTOR LIFE CYCLE; REACTOR SITES; SCRUBBERS; SIZE; SOLS

Optional Information

Notes
Available as Internet Data in PDF format, Folder Name: Track10, Paper ID: ICONE27-2022F.pdf; 16 refs., 9 figs., 2 tabs.