Abstract：
:Rice straw was modified by azide-alkyne click reaction in order to realize selective extraction of noble metal ions. The ability of the modified straw to adsorb Pd(2+) and Pt(4+) was assessed using a batch adsorption technique. It was found that the sorption equilibrium could be reached within 1h and the adsorption capacity increased with temperature for both Pd(2+) and Pt(4+). The maximum sorption capacities for Pd(2+) and Pt(4+) were respectively attained in 1.0 and 0.1 mol/L HCl. The modified straw showed excellent selectivity for noble metal ions in comparison to the pristine straw. In addition, the modified straw was examined as a column packing material for extraction of noble metal ions. It was indicated that 1.0 mL/min was the best flow rate for Pd(2+) and Pt(4+). The modified straw could be repeatedly used for 10 times without any significant loss in the initial binding affinity.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Wang J,Wei J,Li Jdoi
10.1016/j.biortech.2014.11.092subject
Has Abstractpub_date
2015-02-01 00:00:00pages
182-7eissn
0960-8524issn
1873-2976pii
S0960-8524(14)01706-4journal_volume
177pub_type
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