Hydrodynamics and mass transfer studies on a plate microreactor

Ratchananusorn, Warin; Semyonov, Denis; Gudarzi, Davood; Kolehmainen, Eero; Турунен, Илкка

doi:10.1016/j.cep.2011.08.010

Cited by 9 publications

(2 citation statements)

References 17 publications

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“…The interfacial area of a wood matrix was also estimated at above 6 × 10 4 m 2 /m 3 by AutoCAD (Autodesk Computer Aided Design) as shown in the Supporting Information. It is far above conventional units at about 1000 m 2 /m 3 and superior to other microreactors . The model of the catalytic degradation process in Mn 3 O 4 /TiO 2 /wood matrix as a parallel-series microreactor is schematically shown in Figure .…”

Section: Resultsmentioning

confidence: 99%

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Antifouling Wood Matrix with Natural Water Transfer and Microreaction Channels for Water Treatment

Liu

Chen

Liu³

et al. 2019

ACS Sustainable Chem. Eng.

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Wood with abundant nutrition transport channels could be considered as a kind of natural water purifier due to quick and effective passages for separation. Nevertheless, microporosity as the main porous structure of initial wood is not enough to effectively separate small molecules, such as organic dye pollutants. Meanwhile, like most filters, the fouling resulting in blocking and poor water flux will also restrict their large scale. Here, we incorporate Fenton-like catalysis based on Mn3O4 loading for degradation of methylene blue with water transfer and separation channel of fir wood (the interfacial area was estimated up to 6 × 104 m2/m3) to solve the low separating efficiency and fouling problem. The results show that the wood matrix treated by hydrothermal carbonization loading with Mn3O4 nanoparticles (Mn3O4/TiO2/wood) exhibited remarkable catalytic efficiency on methylene blue (MB) moles degradation and the fouling problem could be significantly alleviated during Fenton-like catalysis. The turnover frequency of the wood matrix is 6.072 × 10–3 molMB·molMn3O4 –1·min–1, which is much higher than the values reported in the literature. The flux maintained approached 2045 L·m–2·h–1 with a high rejection rate of more than 95%. Wood with natural interconnected micropores as the main fluid transfer and microreaction channels is a promising material for construction of parallel-series microreactors, to apply to some vital chemical process besides sewage purification and desalination.

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Section: Resultsmentioning

confidence: 99%

“…It is far above conventional units at about 1000 m 2 /m 3 and superior to other microreactors. 42 The model of the catalytic degradation process in Mn 3 O 4 /TiO 2 /wood matrix as a parallel-series microreactor is schematically shown in Figure 9.…”

Section: ■ Experimental Sectionmentioning

confidence: 99%

Antifouling Wood Matrix with Natural Water Transfer and Microreaction Channels for Water Treatment

Liu

Chen

Liu³

et al. 2019

ACS Sustainable Chem. Eng.

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Process Intensification in Gas–Liquid Mass Transfer by Modification of Reactor Design: A Review

Zhang

Song

et al. 2023

Energy Tech

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Increasing greenhouse gas (GHG) emissions is a major issue facing the global environment and the public. This increase is due to accelerating industrial development and rising emissions of gases, including carbon dioxide (CO 2 ), methane (CH 4 ), and nitrogen oxides (NO x ). These gases are believed to be the source of global warming. [1] According to the Intergovernmental Panel on Climate Change (IPCC), total GHGs need to be reduced by 50-80% by 2050 to avoid extreme consequences. [2] Therefore, gas removal needs to be improved. In the late 1970s, a new method was developed, namely, carbon capture and storage (CCS), as an effective way to avoid CO 2 emissions into the atmosphere. In addition, H 2 absorption is required for microbial conversion to CH 4 . H 2 -liquid mass transfer limits the rate of biomethanation reactions due to the low H 2 distribution in solution that limits its solubility and, thus, its availability to methanogens. The development of biomethanation technology needs to focus on H 2 -liquid mass transfer to develop large biomethanation capacity. Therefore, an in-depth understanding of process design and operating conditions that affect H 2liquid mass transfer is necessary. In addition to, methane is the main component of natural gas and shale gas, accounting for 90% of the total abundance. [3,4] Thus, as one of the most widely used high-energy resources on earth, methane is considered as the next generation of carbon feedstock. Nevertheless, methane is a nonpolar gas, and its low solubility in solution hinders efficient mass transfer. Therefore, it is necessary to overcome these limitations to achieve high methane conversion. [5][6][7] To the best of our knowledge, as low-cost green oxidant, oxygen is widely used in microbial growth and product synthesis. [8] However, oxygen is less soluble in aqueous solution. At 294.15 K and 1 bar, the dissolved oxygen content of pure water is only 9.2 mg L À1 . [9] Therefore, it is a great challenge for reactor engineering to improve the oxygen transfer capacity of the equipment to meet the needs of the reaction.Ozonation is one of the most widely used advanced oxidation processes (AOPs), which has been applied to treat various types of organic wastewater. However, the equilibrium concentration and mass transfer efficiency of ozone in water are limited, leading to the poor ozone utilization. [10] Therefore, it is necessary to find effective methods to enhance ozone-liquid mass transfer.As deduced in the above finding, new approaches are needed to deal with the pointed out these limitations.Process reinforcement is an important part of the varied aspects of chemical science and engineering. [11] It allows for resource maximization and does more with less. [12] As shown in Table 1, the more and the less were summarized. [13] Mass transfer between gas and liquid is widely used in chemical engineering. It is closely correlated with reaction engineering, separation engineering, and many branches of chemical engineering. The rate and efficiency of mass transfer de...

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Preparation and Study of Pd Catalysts Supported on Activated Carbon Cloth (ACC) for Direct Synthesis of H2O2 from H2 and O2

et al. 2013

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Hydrodynamics and mass transfer studies on a plate microreactor

Cited by 9 publications

References 17 publications

Antifouling Wood Matrix with Natural Water Transfer and Microreaction Channels for Water Treatment

Antifouling Wood Matrix with Natural Water Transfer and Microreaction Channels for Water Treatment

Process Intensification in Gas–Liquid Mass Transfer by Modification of Reactor Design: A Review

Preparation and Study of Pd Catalysts Supported on Activated Carbon Cloth (ACC) for Direct Synthesis of H2O2 from H2 and O2

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