Phenol Removal from Wastewater in Petroleum Refineries by Managing Flow Characteristics and Nanocatalyst in Ozonized Bubble Column

IF 1.3 4区工程技术 Q3 CHEMISTRY, ORGANIC

Petroleum Chemistry Pub Date : 2024-05-23 DOI:10.1134/s0965544124020117

Saja A. Alattar, Khalid A. Sukkar, May A. Alsaffar

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Abstract

Packed bubble column reactor (PBCR) is an efficient category of multiphase reactors in the petroleum and petrochemical industries. The hydrodynamics parameters in this reactor regard the main imaginary mirror that reflects the operating performance. In the present study, the removal of phenol was achieved from wastewater using a PBCR with TiO₂ as a nanocatalyst. The reactor was constructed from QF-glass of 150 cm in height and 8 cm in diameter. The phenol degradation process was carried out in the presence of ozone as a gas phase in the chemical reaction. The superficial gas velocity in the reactor was studied at different gas velocities (i.e., 0.7, 1.3, 2, 2.7, and 3.4 cm/s). The results showed that superficial gas velocity plays an important task in determining the bubble size, bubble rise velocity, and reactor flow patterns. All these parameters provided clear indications for the high-performance reactor and then the high reaction rate of phenol degradation. Moreover, the results showed that the highest phenol removal of 100% was obtained with TiO₂ NPs as a heterogeneous catalyst in the ozonation process. Also, it was notice that the mass transfer process and the contact time and surface area inside the reactor are improved by the use of packing material in BCR. All these parameters will provide an efficient phenol degradation mechanism in the reactor. Finally, the use of packed bubble columns in the present experimental work improves wastewater treatment with simple operation, low cost, and high performance.

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通过管理臭氧气泡塔中的流动特性和纳米催化剂去除石油炼制废水中的苯酚

摘要成套气泡塔反应器（PBCR）是石油和石化工业中的一类高效多相反应器。该反应器中的流体力学参数是反映其运行性能的主要假想镜像。在本研究中，使用以 TiO2 为纳米催化剂的 PBCR 实现了废水中苯酚的去除。反应器由 QF 玻璃制成，高 150 厘米，直径 8 厘米。苯酚降解过程是在臭氧作为化学反应气相存在的情况下进行的。研究了不同气速（即 0.7、1.3、2、2.7 和 3.4 厘米/秒）下反应器中的表面气速。结果表明，表层气体速度在决定气泡大小、气泡上升速度和反应器流动模式方面起着重要作用。所有这些参数都清楚地表明了反应器的高性能以及苯酚降解的高反应速率。此外，研究结果表明，在臭氧处理过程中使用 TiO2 NPs 作为异相催化剂，苯酚去除率最高，达到 100%。同时还发现，在 BCR 中使用填料后，反应器内的传质过程、接触时间和表面积都得到了改善。所有这些参数都将为反应器提供高效的苯酚降解机制。最后，在本实验工作中使用填料气泡塔可以改善废水处理效果，而且操作简单、成本低、性能高。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Petroleum Chemistry 工程技术-工程：化工

CiteScore

2.50

自引率

21.40%

发文量

102

审稿时长

6-12 weeks

期刊介绍： Petroleum Chemistry (Neftekhimiya), founded in 1961, offers original papers on and reviews of theoretical and experimental studies concerned with current problems of petroleum chemistry and processing such as chemical composition of crude oils and natural gas liquids; petroleum refining (cracking, hydrocracking, and catalytic reforming); catalysts for petrochemical processes (hydrogenation, isomerization, oxidation, hydroformylation, etc.); activation and catalytic transformation of hydrocarbons and other components of petroleum, natural gas, and other complex organic mixtures; new petrochemicals including lubricants and additives; environmental problems; and information on scientific meetings relevant to these areas. Petroleum Chemistry publishes articles on these topics from members of the scientific community of the former Soviet Union.