The Materials Genome Institute (MGI) of Shanghai University, Shanghai University, Shanghai, 200444, China.
School of Environment and Chemical Engineering, Shanghai University, Shanghai, 200444, China.
Environ Sci Pollut Res Int. 2023 Apr;30(19):57050-57057. doi: 10.1007/s11356-023-26419-1. Epub 2023 Mar 17.
In this article, an innovative sorbent (Fe-FA) is prepared from fly ash; ferrous sulfate-containing waste slag (FSS), which are industrial wastes; and NaOH by a hydrothermal method at 100 °C. As a result, in comparison to several conventional sorbents, such as ZnO, FeO, 13X zeolite, and activated carbon, Fe-FA had the best adsorption performance for HS adsorption. Fe-FA had not only a higher adsorption capacity (near 150 mg/g) but also a longer breakthrough time (near 400 min) when gas hourly space velocity was 8000 h. Then, characterizations of XRD, BET, NH-TPD, FTIR, and XPS analyzed basic properties of Fe-FA and revealed reasons for the excellent adsorption performance. In general, the excellent adsorption performance of Fe-FA for HS is mainly due to the high content of iron species (almost 50%) and suitable mesoporous structure in the Fe-FA.
本文采用水热法，以粉煤灰和含硫酸亚铁废渣（FSS）为原料，氢氧化钠为碱源，制备了一种新型吸附剂（Fe-FA）。结果表明，与 ZnO、FeO、13X 沸石和活性炭等几种传统吸附剂相比，Fe-FA 对 HS 的吸附性能最好。当空速为 8000 h 时，Fe-FA 的吸附容量（接近 150mg/g）更高，穿透时间（接近 400min）更长。随后，通过 XRD、BET、NH-TPD、FTIR 和 XPS 等表征手段分析了 Fe-FA 的基本性质，并揭示了其优异吸附性能的原因。一般来说，Fe-FA 对 HS 具有优异的吸附性能，主要是由于 Fe-FA 中含有高含量的铁物种（接近 50%）和适宜的中孔结构。
