Abstract
The removal of nitrobenzene in the zerovalent iron-persulfate (ZVI-PS) system was investigated in this study. During the process of nitrobenzene reduction by pristine ZVI, fast adsorption of nitrobenzene was observed at pHini 3.0 and the removal rate was accelerated with the decrease of initial pH values. The increase of ZVI dosage enhanced the removal effectively and PS added to the system significantly promoted the removal rate of nitrobenzene. The cost of PS added was far less than the increase of counterpart of ZVI dosage to achieve the same removal effect. By XRD characterization of the precipitates after reaction, PS was supposed to enhance nitrobenzene removal by promoting ZVI corrosion and transformation of ZVI corrosion products. By FTIR characterization, it was determined that PS accelerated the nitrobenzene reduction process only, but did not change its reduction pathway. GC-MS results verified that the main product of nitrobenzene reduction by ZVI/ZVI-PS was aniline.
| Translated title of the contribution | Enhanced nitrobenzene removal by persulfate-assisted zerovalent iron |
|---|---|
| Original language | Chinese (Traditional) |
| Pages (from-to) | 2175-2182 |
| Number of pages | 8 |
| Journal | Huagong Xuebao/CIESC Journal |
| Volume | 69 |
| Issue number | 5 |
| DOIs | |
| State | Published - 1 May 2018 |
| Externally published | Yes |