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| Preparation of Polystyrene/Fe3O4 Suspension Filler and Fenton-like Treatment of Guaiacol Simulated Wastewater |
| Received:August 03, 2023 |
| DOI：10.11981/j.issn.1000-6842.2023.04.31 |
| Key Words:nano Fe3O4;PS@Fe3O4 suspended filler;Fenton-like reaction;guaiacol |
| Fund Project:广西清洁化制浆造纸与污染控制重点实验室项目（2021KF16）。 |
| Author Name | Affiliation | Postcode | | LUO Qing* | College of Bioresources Chemical and Materials Engineering， National Demonstration Center for Experimental Light Chemistry Engineering Education， Shaanxi University of Science & Technology， Xi'an， Shaanxi Province， 710021 | 710021 | | JING Tianhao | College of Bioresources Chemical and Materials Engineering， National Demonstration Center for Experimental Light Chemistry Engineering Education， Shaanxi University of Science & Technology， Xi'an， Shaanxi Province， 710021 | 710021 | | ZHANG Anlong | School of Environmental Science and Engineering，Shaanxi University of Science & Technology， Xi'an， Shaanxi Province， 710021 | 710021 | | ZONG Xiaoning | College of Bioresources Chemical and Materials Engineering， National Demonstration Center for Experimental Light Chemistry Engineering Education， Shaanxi University of Science & Technology， Xi'an， Shaanxi Province， 710021 | 710021 | | LIU Yuxing | College of Bioresources Chemical and Materials Engineering， National Demonstration Center for Experimental Light Chemistry Engineering Education， Shaanxi University of Science & Technology， Xi'an， Shaanxi Province， 710021 | 710021 |
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| Abstract: |
| Fenton-like reaction is one of the effective solutions to the problems of large dosage of chemical agents and large amount of iron mud production in homogeneous Fenton. In this study， polystyrene （PS）/Fe3O4 suspension filler was synthesized with Fe3O4-OH and styrene （St） as main raw materials by chain polymerization reaction， which was used for Fenton-like treatment of guaiacol simulated wastewater. Fourier transform infrared spectroscopy （FT-IR）， thermogravimetry （TGA）， ultra-depth of field microscope， scanning electron microscope （SEM） and X-ray energy spectrometry （EDS） were used to analyze and characterize the suspension fillers， and it was found that PS/Fe3O4 suspension fillers had a double-layer composite structure of Fe3O4-OH and polystyrene. The mass ratio of Fe3O4 is 51.6%. The degradation effect of PS/Fe3O4 suspension filler and nano Fe3O4 Fenton-like system on guaiacol was compared and studied. It was found that the treatment effect of PS/Fe3O4 suspension filler was better， and the optimal process conditions were as follows： The initial pH value was 4， m（CODCr）∶m（H2O2）=1∶1.5， the dosage of suspension filler was 0.8 g/L， the reaction time was 120 min， and the degradation rate of guaiacol reached 88.63%. The free radical quenching experiment showed that the main active free radical in the Fenton-like degradation system of guaiacol before and after Fe3O4 modification was ·OH. |
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