Synthesis of BiOI@NH2-MIL125(Ti)/Zeolite as a novel MOF and advanced hybrid oxidation process application in benzene removal from polluted air stream

IF 3 4区 环境科学与生态学 Q3 ENGINEERING, ENVIRONMENTAL Journal of Environmental Health Science and Engineering Pub Date : 2022-10-29 DOI:10.1007/s40201-022-00837-8
Jamal Mehralipour, Ahmad Jonidi Jafari, Mitra Gholami, Ali Esrafili, Majid Kermani
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引用次数: 5

Abstract

Abstract

One of the popular process in volatile organic compounds removal in gas phase is advanced oxidation process. We in this research, synthesized BiOI@NH2-MIL125(Ti)/Zeolite nanocomposite as a novel nanocomposite to degradation of benzene in hybrid advanced oxidation process. The nanocomposite synthesized via solvothermal method. The effect of airflow, ozone gas concentration, hydrogen peroxide concentration, relative humidity and initial benzene concentration are the main parameters in the UV/O3/H2O2/ nanocomposite hybrid process that were studied. The characterization by XRD, FT-IR, FESEM, EDS element mapping, TEM, BET, and UV–vis spectra indicated that nanocomposite were well synthesized. Optimal operating conditions of the process were determined at air flow of 0.1 l/min, ozone concentration of 0.3 mg/min, hydrogen peroxide concentration of 150 ppm, relative humidity of 45 ± 3% and benzene concentration of 50 ppmv. Under these conditions, more than 99% of benzene was degraded. The synergistic effect coefficient of the mechanisms is 1.53. The nanocomposite had good stability in the hybrid process and remained above 99% efficiency up to 5 times. The ozone concentration residual the system was reported to be negligible (0.013 mg/min). The CO and CO2 emissions in the hybrid process was higher than other processes, which indicates better mineralization in the hybrid process. Formaldehyde, octane, noonan, phenol, decanoic acid were reported as the main by-products. The results indicated that UV/O3/H2O2/ nanocomposite hybrid process has fantastic efficiency in the degradation of benzene as one of the indicators of VOCs.

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新型MOF BiOI@NH2-MIL125(Ti)/沸石的合成及先进混合氧化工艺在污染气流中苯去除中的应用
摘要高级氧化法是气相挥发性有机物脱除的常用方法之一。在本研究中,我们合成了BiOI@NH2-MIL125(Ti)/沸石纳米复合材料,作为一种新型的纳米复合材料,用于混合深度氧化过程中苯的降解。采用溶剂热法合成纳米复合材料。研究了气流、臭氧气体浓度、过氧化氢浓度、相对湿度和初始苯浓度对UV/O3/H2O2/纳米复合复合工艺的影响。通过XRD、FT-IR、FESEM、EDS元素图、TEM、BET和UV-vis光谱等表征表明,纳米复合材料合成效果良好。确定了该工艺的最佳操作条件:空气流量0.1 l/min,臭氧浓度0.3 mg/min,过氧化氢浓度150 ppm,相对湿度45±3%,苯浓度50 ppmv。在此条件下,苯的降解率达99%以上。各机制的协同效应系数为1.53。该纳米复合材料在杂化过程中具有良好的稳定性,效率保持在99%以上的次数高达5次。据报道,该系统的臭氧残留浓度可忽略不计(0.013 mg/min)。混合过程CO和CO2排放量高于其他混合过程,表明混合过程矿化程度较好。主要副产物为甲醛、辛烷、努南、苯酚、癸酸。结果表明,UV/O3/H2O2/纳米复合杂化工艺对作为VOCs指标之一的苯具有良好的降解效果。
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来源期刊
Journal of Environmental Health Science and Engineering
Journal of Environmental Health Science and Engineering ENGINEERING, ENVIRONMENTAL-ENVIRONMENTAL SCIENCES
CiteScore
7.50
自引率
2.90%
发文量
81
期刊介绍: Journal of Environmental Health Science & Engineering is a peer-reviewed journal presenting timely research on all aspects of environmental health science, engineering and management. A broad outline of the journal''s scope includes: -Water pollution and treatment -Wastewater treatment and reuse -Air control -Soil remediation -Noise and radiation control -Environmental biotechnology and nanotechnology -Food safety and hygiene
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