Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7843141 | Journal of Molecular Liquids | 2018 | 6 Pages |
Abstract
Development of engineering materials is critical to the improvement of adsorption performance. In this study, the new adsorbent of magnetic iron oxide/biochar (MIO/B) composites was synthesized by one-pot pyrolysis of FeCl2-preloaded Paecilomyces catenlannulatus under N2 conditions. The as-prepared composites were characterized by TEM, XPS, XRD and FT-IR techniques. The characteristic results showed that MIO/B composites presented a variety of nitrogen- and oxygen-containing functional groups. The effect of water chemistry on U(VI) adsorption towards MIO/B composites was investigated by batch techniques. The batch adsorption showed that U(VI) adsorption on MIO/B composites was independent of ionic strength at pH from 2.0 to 11.0, approximate 90% of U(VI) was removed by MIO/B composites at reaction time of 12Â h. The maximum adsorption capacity of U(VI) on MIO/B composites calculated from Langmuir mode at pHÂ 4.0 and 293Â K was 74.63Â mg/g. These findings are crucial for the practical application of biochar-based composites for the high effective enrichment of radionuclides from aqueous solutions in environmental remediation.
Keywords
Related Topics
Physical Sciences and Engineering
Chemistry
Physical and Theoretical Chemistry
Authors
Fengbo Li, Xiaoyu Li, Pu Cui,