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‘Significant potential’: China uses organic ‘detector’ to extract ocean uranium for energy

  • ‘Exceptional’ new material could be the answer in search for an efficient, economical source of endless nuclear energy, researchers say

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Chinese scientists say they are a step closer to economically extracting uranium from seawater for nuclear energy. Photo: Shutterstock Images
Dannie Pengin Beijing
China is a step closer to securing its nuclear energy ambitions after scientists said they had developed a new material that can efficiently extract uranium – the primary heavy metal used to fuel nuclear reactors – from seawater.

The research group at the Qingdao Institute of Bioenergy and Bioprocess Technology (QIBEBT) under the Chinese Academy of Sciences has delivered a new “cost-effective” material that they said has “exceptional uranium adsorption capability”.

Adsorbent materials work by allowing a dissolved solid, gas or liquid to adhere to their surfaces. The Chinese-developed material consists of very small, hollow, round particles known as “SA-DNA hydrogel microspheres” with organic structures that are about 2mm across and contain numerous micrometre-sized pores.

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The material was created by combining sodium alginate – a readily available product extracted from kelp or other sources – with functional strands of DNA that can recognise and bind to uranium ions.

SA-DNA hydrogel microspheres for uranium extraction from seawater. Photo: Science Direct
SA-DNA hydrogel microspheres for uranium extraction from seawater. Photo: Science Direct

The team, led by QIBEBT engineer Fa Yun and researcher Liu Huizhou, published their findings in the peer-reviewed Chemical Engineering Journal this month.

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