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| Bi2O2CO3/Fe3O4磁性复合物在环境污染治理领域中的应用 | |
| 引用本文： | 闫雪倩,裴向军,杜杰,米晓慧,白琳嵚,马蕊,张明宽,钱进.Bi2O2CO3/Fe3O4磁性复合物在环境污染治理领域中的应用[J].化工进展,2021,40(6):3515-3525. |
| 作者姓名： | 闫雪倩 裴向军 杜杰 米晓慧 白琳嵚 马蕊 张明宽 钱进 |
| 作者单位： | 西北工业大学化学与化工学院,陕西西安710072;地质灾害防治与地质环境保护国家重点实验室,四川成都610000;九寨沟县漳扎镇九寨沟管理局,四川阿坝州623402 |
| 基金项目： | 中央高校基本科研业务费项目(3102019AX18);四川省灾后重建遗产保护恢复项目(5132202019000128) |
| 摘 要： | 以Fe3O4纳米粒子和Bi2O2CO3为原料，采用溶剂热法制备Bi2O2CO3/Fe3O4磁性复合物，并通过对印染废水中染料的去除、剩余污泥厌氧消化过程中产甲烷潜力的影响两方面探讨其在环境污染治理中的应用。借助X射线衍射（XRD）、扫描电镜（SEM）、傅里叶红外光谱（FTIR）和比表面积及孔径分析对Bi2O2CO3/Fe3O4复合物进行表征分析，SEM分析结果表明复合物表面较粗糙，BET结果显示复合物的比表面积为9.2294m2/g，Fe3O4的引入大幅度增加了Bi2O2CO3的比表面积，使其具有明显的介孔结构。一方面，以甲基橙（MO）为目标污染物，研究了不同实验条件下该材料对染料的去除效果，结果表明，最大吸附量可达14.373mg/g，且该吸附反应过程符合拟二级动力学和Langmuir吸附等温模型，趋于单分子层吸附；另一方面，评估了复合物对污泥厌氧消化产甲烷潜力的影响，结果表明，复合物的引入对污泥厌氧消化产甲烷过程有一定的促进作用，累积产甲烷量相比于对照组提高了10%。分别用一级动力学模型和修正Gompertz模型模拟厌氧消化过程，模拟结果显示一级动力学模型可以更好地描述引入Bi2O2CO3/Fe3O4磁性复合物的污泥厌氧消化过程。 |
| 关 键 词： | 碳酸氧铋/四氧化三铁 磁性材料 吸附 甲基橙 剩余污泥 厌氧消化 产甲烷潜力 |
| 收稿时间： | 2020-07-29 |
Preparation,characterization and application of Bi2O2CO3/Fe3O4 magnetic composite material in environmental treatment |
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| YAN Xueqian,PEI Xiangjun,DU Jie,MI Xiaohui,BAI Linqin,MA Rui,ZHANG Mingkuan,QIAN Jin.Preparation,characterization and application of Bi2O2CO3/Fe3O4 magnetic composite material in environmental treatment[J].Chemical Industry and Engineering Progress,2021,40(6):3515-3525. | |
| Authors: | YAN Xueqian PEI Xiangjun DU Jie MI Xiaohui BAI Linqin MA Rui ZHANG Mingkuan QIAN Jin |
| Affiliation: | 1.School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi’an 710072, Shaanxi, China 2.State Key Laboratory of Geological Disaster Prevention and Geological Environment Protection, Chengdu 610000, Sichuan, China 3.Jiuzhaigou Administrative Bureau, Zhangzha, Jiuzhaigou, Aba 623402, Sichuan, China |
| Abstract: | Fe3O4 nanoparticles and Bi2O2CO3 were used as raw materials for the manufacture of Bi2O2CO3/Fe3O4 magnetic composite material by solvothermal method. Its applications for the remediation of the environmental pollutions were discussed, in terms of the removal of the dyes in the dyeing wastewater, the potential positive effects on the anaerobic digestion of the wasted sludge. The Bi2O2CO3/Fe3O4 composite material was characterized via X-ray diffraction (XRD), scanning electron microscope (SEM), Fourier transform infrared spectroscopy (FTIR), and specific surface area and pore size analysis. SEM images showed that the surface of the composite material was rough. The BET result indicated that the specific surface area of the composite material was 9.2294m2/g, and the introduction of Fe3O4 largely increased the specific surface area of Bi2O2CO3, resulting in an obvious mesoporous structure. On one hand, the removal efficiencies of the dyes by the composite material with methyl orange (MO) as the target pollutant under different conditions were studied. The maximum adsorption capacity could reach 14.373mg/g. The adsorption reaction is likely to be the pseudo-second-order reaction, which can be described by the Langmuir adsorption isotherm model and characterized as the monolayer adsorption. On the other hand, the effects of composite materials on the methane production potential during anaerobic sludge digestion were evaluated. The addition of composite materials can promote methane production in sludge anaerobic digestion, and the cumulative methane production increased by 10% compared with that of the control group. The first-order kinetic model could well describe Bi2O2CO3/Fe3O4-involved the anaerobic digestion process. |
| Keywords: | bismuth oxycarbonate/ferroferric oxide (Bi2O2CO3/Fe3O4) magnetic material adsorption Methyl orange wasted sludge anaerobic digestion methane production potential |
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