Salt-Resistant Catalyst Fe-Bi@γ-Al2O3 for Catalytic Ozonation of High-Salt Simulated Wastewater

IF 3.8 4区环境科学与生态学 Q2 ENVIRONMENTAL SCIENCES Water, Air, & Soil Pollution Pub Date : 2024-11-22 DOI:10.1007/s11270-024-07652-x

Lei Guo, Xingwang Yang, Yanhua Xu, Jun Zhou, Wenquan Sun, Yongjun Sun

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Abstract

In order to study the effects of common ionic components in wastewater on the catalytic performance and salt resistance of the Fe-Bi@γ-Al₂O₃ catalyst, hydroquinone was selected as the target organic pollutant. Five factors, namely cation species, anion species, total hardness, total alkalinity, and TDS were studied to investigate the effects of different ionic components on the degradation of hydroquinone by the Fe-Bi@γ-Al₂O₃ catalyst. K⁺ and Na⁺ had basically no effect on the COD removal rate, and the COD removal rates were 81.43% and 83.81%, respectively, with no significant change from the COD removal rate from raw water (85.24%), Cu²⁺ and Al³⁺ had some inhibitory effect on the COD removal rate, and the COD removal rate was 68.57% and 70.00%, respectively. While, the presence of Fe³⁺, Cl⁻, Br⁻ and SiO₃²⁻ had a significant inhibitory effect on the COD removal rate, and the COD removal rate was 61.90%, 51.90%, 55.71% and 60.48%. The concentration of Ca²⁺ was 50 mg/L and Mg²⁺ was 200 mg/L, the COD removal rate was 57.62% and 60.48%, respectively due to water hardness. The alkalinity had an inhibitory effect on the treatment effect of simulated waste water, when the OH concentration was 1500 mg/L, the COD removal rate was 49.05%. The higher the TDS concentration, the more obvious was the inhibitory effect on the COD removal rate, and the COD removal rate was 41.43% when the TDS was 50,000 mg/L. The intermediates and possible degradation mechanisms after catalytic ozone oxidation of hydroquinone-simulated wastewater by Fe-Bi@γ-Al₂O₃ were investigated by UV spectroscopy scanning, 3D fluorescence spectroscopy scanning, and GC–MS scanning.

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用于高盐模拟废水催化臭氧处理的耐盐催化剂 Fe-Bi@γ-Al2O3

为了研究废水中常见离子成分对Fe-Bi@γ-Al2O3催化剂催化性能和耐盐性的影响，选择对苯二酚作为目标有机污染物。研究了阳离子种类、阴离子种类、总硬度、总碱度和 TDS 五个因素，考察了不同离子组分对 Fe-Bi@γ-Al2O3 催化剂降解对苯二酚的影响。K+和Na+对COD的去除率基本没有影响，COD去除率分别为81.43%和83.81%，与原水的COD去除率（85.24%）相比没有显著变化；Cu2+和Al3+对COD的去除率有一定的抑制作用，COD去除率分别为68.57%和70.00%。而 Fe3+、Cl-、Br- 和 SiO32- 的存在对 COD 去除率有明显的抑制作用，COD 去除率分别为 61.90%、51.90%、55.71% 和 60.48%。当 Ca2+ 浓度为 50 mg/L 和 Mg2+ 浓度为 200 mg/L 时，由于水硬度的影响，COD 去除率分别为 57.62% 和 60.48%。碱度对模拟废水的处理效果有抑制作用，当 OH 浓度为 1500 mg/L 时，COD 去除率为 49.05%。TDS 浓度越高，对 COD 去除率的抑制作用越明显，当 TDS 为 50,000 mg/L 时，COD 去除率为 41.43%。通过紫外光谱扫描、三维荧光光谱扫描和气相色谱-质谱扫描研究了 Fe-Bi@γ-Al2O3 催化臭氧氧化对苯二酚模拟废水后的中间产物及可能的降解机理。

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来源期刊

Water, Air, & Soil Pollution 环境科学-环境科学

CiteScore

4.50

自引率

6.90%

发文量

448

审稿时长

2.6 months

期刊介绍： Water, Air, & Soil Pollution is an international, interdisciplinary journal on all aspects of pollution and solutions to pollution in the biosphere. This includes chemical, physical and biological processes affecting flora, fauna, water, air and soil in relation to environmental pollution. Because of its scope, the subject areas are diverse and include all aspects of pollution sources, transport, deposition, accumulation, acid precipitation, atmospheric pollution, metals, aquatic pollution including marine pollution and ground water, waste water, pesticides, soil pollution, sewage, sediment pollution, forestry pollution, effects of pollutants on humans, vegetation, fish, aquatic species, micro-organisms, and animals, environmental and molecular toxicology applied to pollution research, biosensors, global and climate change, ecological implications of pollution and pollution models. Water, Air, & Soil Pollution also publishes manuscripts on novel methods used in the study of environmental pollutants, environmental toxicology, environmental biology, novel environmental engineering related to pollution, biodiversity as influenced by pollution, novel environmental biotechnology as applied to pollution (e.g. bioremediation), environmental modelling and biorestoration of polluted environments. Articles should not be submitted that are of local interest only and do not advance international knowledge in environmental pollution and solutions to pollution. Articles that simply replicate known knowledge or techniques while researching a local pollution problem will normally be rejected without review. Submitted articles must have up-to-date references, employ the correct experimental replication and statistical analysis, where needed and contain a significant contribution to new knowledge. The publishing and editorial team sincerely appreciate your cooperation. Water, Air, & Soil Pollution publishes research papers; review articles; mini-reviews; and book reviews.