| Item type |
紀要論文 / Departmental Bulletin Paper(1) |
| 公開日 |
2023-09-27 |
| タイトル |
|
|
タイトル |
TiO2 光触媒を用いたプラスチックフィルム分解におけるプラスチックの種類と光触媒濃度の影響 |
|
言語 |
ja |
| タイトル |
|
|
タイトル |
Effect of plastic-type and photocatalyst concentration on plastic film degradation using TIO2 |
|
言語 |
en |
| 言語 |
|
|
言語 |
jpn |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Microplastic degradation |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Photocatalyst |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Titanium o ide |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Wastewater treatment |
| 資源タイプ |
|
|
資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
|
資源タイプ |
departmental bulletin paper |
| 著者 |
山口,真奈未
Manami, Yamaguchi
成田, 唯人
Yuito, Narita
西, 健斗
Kento, Nishi
松山, 達
Tatsushi, Matsuyama
井田, 旬一
Junichi, Ida
|
| 抄録 |
|
|
内容記述タイプ |
Abstract |
|
内容記述 |
Microplastics, small plastic pieces less than 5 mm in size, are one of the most con- cerning pollutants that can be harmful to the environment and its biota today. Because of their high abundance and small particle size, microplastics are known to be easily ingested by micro organisms and affect many organisms as they move through the food chain. In addition, there is concern that microplastics can be vectors of hazardous substances as they are known to adsorb persistent organic pollutants (POPs) in the environment. However, an efficient treatment method for removing microplastics in wastewater has yet to be established. In recent years, research on introducing photocatalytic o idative degradation systems into wastewater treatment plants (WWTPs) was reported for the potential removal of microplastics from wastewater. Neverthe less, previous reports only focused on developing and evaluating photocatalysts suitable for microplastic degradation, and the e amination of the effects of the types of plastic and photocat alyst concentration on microplastic degradation remains limited. The aim of this study is to eval uate the effect of plastic type and photocatalyst concentration on the degradation of plastic. We used four types of plastic films in the e periment: low-density polyethylene (LDPE), high-den sity polyethylene (HDPE), polypropylene (PP) and polyethylene terephthalate (PET), where the degradation of the plastic was measured by weight. The most used and commercially available TiO2 (P25) was used as a photocatalyst with different concentrations from 0.001 to 1.0 g L-1. The plastic degradation e periment used 3.30 cm squares films with 25 to 30 µm thickness under ultraviolet light irradiation using nine black-light fluorescent lamps (6 W; wavelength: 340-400 nm). The degradation and surface morphology of the plastic film was evaluated by measuring weight loss, carbonyl inde , and scanning electron microscopy. The result showed the LDPE had the highest weight loss compared to other plastic types, which could be due to its simple structure consisting solely of C-H single bonds. Additionally, the highest degradation rate was observed when the photocatalyst concentration was 0.01 g L-1. The reason for the degradation rate decrease at concentrations above 0.01 g L-1 was probably due to the self-light shielding effect of TiO . The low degradation rate at a lower concentration of less than 0.01 g L-1 could be due to insufficient catalyst concentration. In the future, it will be important to analyze the degradation pathways by measuring intermediates during the degrading process for each plastic type. |
|
言語 |
en |
| 書誌情報 |
プランクトン工学研究
号 3,
p. 20-28,
発行日 2023-06-26
|
| 出版者 |
|
|
出版者 |
創価大学プランクトン工学研究所 |
| ISSN |
|
|
収録物識別子タイプ |
EISSN |
|
収録物識別子 |
24364878 |
| 著者版フラグ |
|
|
出版タイプ |
VoR |
|
出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
pulanktonkogakukenkyu0_3_02.pdf (1.6 MB)
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