Properties and coagulation mechanisms of polyferric silicate sulfate with high concentration |
| |
Authors: | SONG Zhiwei and REN Nanqi |
| |
Institution: | 1. School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150001, China;School of Resource and Environment Engineering, Heilongjiang Institute of Science and Technology, Harbin 150027, China 2. School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150001, China |
| |
Abstract: | Polyferric silicate sulfate (PFSS) with high concentration was prepared using the composite-poly method. The coagulation properties and mechanisms of this new complex were probed using TEM, Fe-Ferron timed complex-colorimetric method, and infrared spectrum method. The results showed that the flocculating effect of polyferric silicate sulfate had an advantage over polyferric sulfate (PFS), as the optimum coagulation effect could be obtained when the Si/Fe mole ratio was 0.75 in accordance with its macrostructure of PFSS.According to the Fe-Ferron timed complex-colorimetric method, the Si species was mainly Sic, whereas, the Fe species were Fea and Fec in the copolymerization system. The infrared spectra indicated that the structure of these new flocculants was formed by polymers,mainly by olation, which was different from polyferric sulfate, and the vibration of M-OH-M of around 1100 cm-1, also proved that there existed Fe-OH-Fe and its polymers in some forms. |
| |
Keywords: | polyferric silicate sulfate coagulation mechanisms microstructure species distribution timed complex-colorimetric method |
本文献已被 CNKI 维普 万方数据 ScienceDirect PubMed 等数据库收录! |
| 点击此处可从《环境科学学报(英文版)》浏览原始摘要信息 |
| 点击此处可从《环境科学学报(英文版)》下载免费的PDF全文 |
|