Development and Continuous Operation of a Bench-Scale System for the Production of O3 + O2 + CO2 Hydrates

Tomomi Hatsugai; Ryutaro Nakayama; Shigeo Tomura; Ryo Akiyoshi; Shirou Nishitsuka; Ryo Nakamura; Satoshi Takeya; Ryo Ohmura

doi:10.1002/ceat.202000044

Development and Continuous Operation of a Bench-Scale System for the Production of O₃ + O₂ + CO₂ Hydrates

Tomomi Hatsugai, Ryutaro Nakayama, Shigeo Tomura, Ryo Akiyoshi, Shirou Nishitsuka, Ryo Nakamura, Satoshi Takeya, Ryo Ohmura

Department of Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

Abstract

Ozone (O₃) has many industrial applications such as in sterilization. One of the long-term O₃ preservation methods is molecular storage in clathrate hydrate. In this study, an experimental system was developed for continuously forming O₃ + O₂ + CO₂ hydrates. The parameters that affect the continuous operation of the system and that lead to increases in the concentration of O₃ in the hydrates were also experimentally evaluated, implementing the method of quality engineering. After optimizing these operating parameters, the O₃ storage capacity in the hydrates was measured to be 0.26 wt % at 2 h of total operation time. By X-ray diffraction, it was found that the produced sample contained hydrates, and long-term preservation for 6 months was possible at the temperature of general freezing warehouses.

Original language	English
Pages (from-to)	2307-2314
Number of pages	8
Journal	Chemical Engineering and Technology
Volume	43
Issue number	11
DOIs	https://doi.org/10.1002/ceat.202000044
Publication status	Published - 2020 Nov 1

Keywords

Clathrate hydrate
Continuous formation
Long-term preservation
Ozone
X-ray diffraction

ASJC Scopus subject areas

Chemistry(all)
Chemical Engineering(all)
Industrial and Manufacturing Engineering

Access to Document

10.1002/ceat.202000044

Cite this

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title = "Development and Continuous Operation of a Bench-Scale System for the Production of O3 + O2 + CO2 Hydrates",

abstract = "Ozone (O3) has many industrial applications such as in sterilization. One of the long-term O3 preservation methods is molecular storage in clathrate hydrate. In this study, an experimental system was developed for continuously forming O3 + O2 + CO2 hydrates. The parameters that affect the continuous operation of the system and that lead to increases in the concentration of O3 in the hydrates were also experimentally evaluated, implementing the method of quality engineering. After optimizing these operating parameters, the O3 storage capacity in the hydrates was measured to be 0.26 wt % at 2 h of total operation time. By X-ray diffraction, it was found that the produced sample contained hydrates, and long-term preservation for 6 months was possible at the temperature of general freezing warehouses.",

keywords = "Clathrate hydrate, Continuous formation, Long-term preservation, Ozone, X-ray diffraction",

author = "Tomomi Hatsugai and Ryutaro Nakayama and Shigeo Tomura and Ryo Akiyoshi and Shirou Nishitsuka and Ryo Nakamura and Satoshi Takeya and Ryo Ohmura",

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AU - Hatsugai, Tomomi

AU - Nakayama, Ryutaro

AU - Tomura, Shigeo

AU - Akiyoshi, Ryo

AU - Nishitsuka, Shirou

AU - Nakamura, Ryo

AU - Takeya, Satoshi

AU - Ohmura, Ryo

PY - 2020/11/1

Y1 - 2020/11/1

N2 - Ozone (O3) has many industrial applications such as in sterilization. One of the long-term O3 preservation methods is molecular storage in clathrate hydrate. In this study, an experimental system was developed for continuously forming O3 + O2 + CO2 hydrates. The parameters that affect the continuous operation of the system and that lead to increases in the concentration of O3 in the hydrates were also experimentally evaluated, implementing the method of quality engineering. After optimizing these operating parameters, the O3 storage capacity in the hydrates was measured to be 0.26 wt % at 2 h of total operation time. By X-ray diffraction, it was found that the produced sample contained hydrates, and long-term preservation for 6 months was possible at the temperature of general freezing warehouses.

AB - Ozone (O3) has many industrial applications such as in sterilization. One of the long-term O3 preservation methods is molecular storage in clathrate hydrate. In this study, an experimental system was developed for continuously forming O3 + O2 + CO2 hydrates. The parameters that affect the continuous operation of the system and that lead to increases in the concentration of O3 in the hydrates were also experimentally evaluated, implementing the method of quality engineering. After optimizing these operating parameters, the O3 storage capacity in the hydrates was measured to be 0.26 wt % at 2 h of total operation time. By X-ray diffraction, it was found that the produced sample contained hydrates, and long-term preservation for 6 months was possible at the temperature of general freezing warehouses.

KW - Clathrate hydrate

KW - Continuous formation

KW - Long-term preservation

KW - Ozone

KW - X-ray diffraction

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