Research Center of Resource Recycling Science and Engineering, Shanghai Polytechnic University, Shanghai, 201209, China.
School of Environmental and Materials Engineering, Shanghai Polytechnic University, Shanghai, 201209, China.
Environ Sci Pollut Res Int. 2021 Sep;28(34):46281-46290. doi: 10.1007/s11356-021-13814-9. Epub 2021 Apr 8.
Glass fiber sphere (GFS), used as support of MIL-100(Fe) to treat dye wastewater, was successfully synthesized using glass fibers from waste printed circuit board. Structural and textural features of MIL-100(Fe) supported by GFS (GFS/MIL-100(Fe)) were characterized by different techniques. GFS/MIL-100(Fe) showed higher specific surface area and better rhodamine B (RHB) removal performance as well as reusability. RHB removal percentage by GFS/MIL-100(Fe) reached 92% in 11 h, compared with 79% in 7 h of MIL-100(Fe). The highest RHB removal rate was obtained with the GFS/MIL-100(Fe) concentration of 20 g/L. Increasing RHB concentration over 100 mg/L reduced the time needed for saturated adsorption from 11 to 7 h. The best RHB removal performance of GFS/MIL-100(Fe) was obtained at pH = 3, and the removal percentage was almost the same in the pH range 5-11. The adsorption data fitted the pseudo-second-order kinetics better than the pseudo-first-order kinetics, and the adsorption isotherm data fitted Langmuir model better than Freundlich model. MIL-100(Fe) synthesized in organic solvents showed higher loading rate than that obtained in water. GFS/MIL-100(Fe) also showed promising removal performances for methylene blue, acid orange 7, and malachite green in water. The removal percentage of RHB was still 80% even after being used for 3 times. The results of this study indicate the prospect of synthesizing GFS with glass fibers from waste printed circuit boards and its use as the support of MIL-100(Fe).
玻璃纤维球（GFS），用作 MIL-100(Fe) 的载体来处理染料废水，是使用来自废印刷电路板的玻璃纤维成功合成的。通过不同的技术对 GFS 负载的 MIL-100(Fe)（GFS/MIL-100(Fe)）的结构和纹理特征进行了表征。GFS/MIL-100(Fe) 具有更高的比表面积和更好的罗丹明 B（RHB）去除性能以及可重复使用性。GFS/MIL-100(Fe) 在 11 小时内达到 92%的 RHB 去除率，而 MIL-100(Fe) 在 7 小时内达到 79%。在 GFS/MIL-100(Fe) 浓度为 20 g/L 时，获得了最高的 RHB 去除速率。当 RHB 浓度超过 100 mg/L 时，达到饱和吸附所需的时间从 11 小时缩短至 7 小时。在 pH = 3 时，GFS/MIL-100(Fe) 的去除性能最佳，在 pH 5-11 的范围内，去除率几乎相同。吸附数据更符合拟二级动力学模型，而吸附等温线数据更符合朗缪尔模型。在有机溶剂中合成的 MIL-100(Fe) 的负载速率高于在水中合成的 MIL-100(Fe)。GFS/MIL-100(Fe) 对水中的亚甲基蓝、酸性橙 7 和孔雀石绿也表现出良好的去除性能。即使使用 3 次后，RHB 的去除率仍为 80%。本研究结果表明，用来自废印刷电路板的玻璃纤维合成 GFS 并将其用作 MIL-100(Fe) 的载体具有广阔的前景。
