Journal
BIORESOURCE TECHNOLOGY
Volume 214, Issue -, Pages 192-198Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2016.04.096
Keywords
Cesium; Prussian blue; Ion exchange; Granules; Seawater
Funding
- Taipei Water Department
- Taipei City Government
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Cesium (Cs) removal from contaminated water bodies is an emerging issue after the disaster at the Fukushima Daiichi Nuclear Power Plant. The Prussian blue (PB) is an effective Cs adsorbent but will release hexacyanoferrate fragments from the adsorbent matrix during adsorption. Alginate is an affordable biopolymer for PB particles immobilization. This study synthesized poly(vinyl alcohol) (PVA) and alginate cross-linked matrix for immobilization of PB nano-sized particles and a surface-modified styrene-ethyl styrene divinyl benzene resin and tested their swelling stability and Cs adsorption performance in fresh water and in seawater. The PVA-alginate granules have high structural stability in both fresh water and seawater, with the Cs adsorption capability higher for the former than the latter. The adopted resin effectively remove released PB fragments from the tested granules. The transport and reaction parameters for the granules and for the sand filter bed were estimated. (C) 2016 Elsevier Ltd. All rights reserved.
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