English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Zendy Plus

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Zendy Tools

Zendy Open

In this work, batch experiments were carried out to explore the sorption properties for perrhenate (ReO 4  − , a surrogate for TcO 4  − ) by two types of commercial bifunctional anion-exchange resins (Purolite A530E and A532E). It is found that these two bifunctional anion-exchange resins could rapidly remove ReO 4  −  from aqueous solution within 150 min and the maximum sorption capacity for ReO 4  −  reached as high as 707 and 446 mg/g for Purolite A530E and A532E, respectively. The sorption properties were independent of pH over a wide range from 1 to 13. More importantly, both Purolite A530E and A532E exhibited excellent selectivity for the removal of ReO 4  −  in the presence of large excess of NO 3  −  and SO 4  2− . Finally, the removal percentage of ReO 4  −  by these two resins could be &gt;90% and 80%, respectively, from the Hanford low-level waste melter off-gas scrubber simulant stream. Such high selectivity of Purolite A530E and A532E for the removal of ReO 4  −  might be due to the presence of the long-chain group of –[N(Hexyl) 3 ] + , which favored hydrophobic and large anions such as ReO 4  − /TcO 4  −  rather than NO 3  − .

Efficient uptake of perrhenate/pertechnenate from aqueous solutions by the bifunctional anion-exchange resin