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Fe基类Fenton催化剂非均相处理造纸废水 |
Fe-derived Fenton-like Catalyst for Non-homogeneous Treatment of Papermaking Wastewater |
收稿日期:2023-09-19 |
DOI:10.11980/j.issn.0254-508X.2024.03.018 |
关键词: 高温烧结 类Fenton催化剂 造纸废水 非均相Fenton |
Key Words:high-temperature sintering Fenton-like catalyst papermaking wastewater non-homogeneous Fenton |
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摘要:针对传统均相Fenton法深度处理造纸废水中铁泥量大、成本较高等问题,将Fe2O3、Al2O3、SiO2、石墨粉采用高温烧结的方式,制备Fe基类Fenton催化剂,并用于非均相Fenton处理造纸废水,可达到节省FeSO4用量的效果。结果表明,经高温烧结制备的Fe基类Fenton催化剂具有丰富的孔隙结构,在pH值为3、催化剂投加量15 g/L、CODCr和H2O2质量比1∶0.75、反应时间90 min的条件下,造纸废水CODCr去除率为74.8%,且经过10次循环实验仍达70%以上,BOD5去除率可达67%以上。 |
Abstract:To solve the problems of large amount of iron sludge and high cost in the traditional homogeneous Fenton method for the deep treatment of papermaking wastewater, Fe-derived Fenton catalysts were prepared by high temperature sintering of Fe2O3, Al2O3, SiO2, and graphite powder, which was used in the non-homogeneous Fenton treatment of papermaking wastewater to achieve the effect of saving the dosage of FeSO4. The results showed that the Fe-derived Fenton-like catalyst prepared by high-temperature sintering had a rich pore structure. Under the conditions that pH value of 3, catalyst dosage of 15 g/L, mass ratio of CODCr and H2O2 of 1∶0.75, and reaction time of 90 min, the removal rate of CODCr was up to 74.8% and more than 70% even after 10 cycles of experiments. The removal rate of BOD5 could be more than 67%. |
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