神戸大学附属図書館デジタルアーカイブ
入力補助
English
カテゴリ
学内刊行物
ランキング
アクセスランキング
ダウンロードランキング
https://hdl.handle.net/20.500.14094/90004910
このアイテムのアクセス数:
18
件
(
2024-04-26
00:37 集計
)
閲覧可能ファイル
ファイル
フォーマット
サイズ
閲覧回数
説明
90004910 (fulltext)
pdf
886 KB
18
メタデータ
ファイル出力
メタデータID
90004910
アクセス権
open access
出版タイプ
Accepted Manuscript
タイトル
Improvement of separation performance by fluid motion in the membrane module with a helical baffle
著者
Akagi, Takaaki ; Horie, Takafumi ; Masuda, Hayato ; Matsuda, Keigo ; Matsumoto, Hideyuki ; Ohmura, Naoto ; Hirata, Yushi
著者名
Akagi, Takaaki
著者ID
A0969
研究者ID
1000020513550
KUID
https://kuid-rm-web.ofc.kobe-u.ac.jp/search/detail?systemId=9492430f25bbbadf520e17560c007669
著者名
Horie, Takafumi
堀江, 孝史
ホリエ, タカフミ
所属機関名
工学研究科
著者名
Masuda, Hayato
著者名
Matsuda, Keigo
著者名
Matsumoto, Hideyuki
著者ID
A0906
研究者ID
1000050223954
KUID
https://kuid-rm-web.ofc.kobe-u.ac.jp/search/detail?systemId=ac7bf40bf87e7a29520e17560c007669
著者名
Ohmura, Naoto
大村, 直人
オオムラ, ナオト
所属機関名
工学研究科
著者名
Hirata, Yushi
収録物名
Separation and Purification Technology
巻(号)
198
ページ
52-59
出版者
Elsevier B.V.
刊行日
2018-06-08
公開日
2020-07-01
抄録
Pressure-driven membrane filtration processes such as microfiltration and ultrafiltration are still hindered by concentration polarization and membrane fouling. Generally in these filtration processes, concentration polarization causes decline of permeate flux and rejection, and fouling leads to permeate flux decline with the increase of rejection. The use of high shear stress for cross flow filtrations has long been considered one of the most efficient methods for overcoming these problems. However, circumferential fluid motion of the hollow fiber membrane surface is also important to avoid formation of a high concentration layer on the surface. In this study, ultrafiltration of humic acid aqueous solution using a polyethersulfone hollow fiber membrane was selected as a model case, and a membrane module with a helical baffle installed around the membrane was used. With the insertion of the baffle, normalized permeate flux and rejection became higher than those without the baffle at the wide range of the feed flow rate. In order to identify the cause of the improvement, CFD simulation was conducted for different baffle geometries. Swirling flow motion generated by the helical baffle around the membrane became more dominant with the lower aperture ratio of the cross sectional area, and there existed the optimum value for the swirling flow generation in terms of the variation of the helical baffle pitch length. The intensity of this fluid motion was characterized by Swirl number and it was found out that high separation performance was obtained at the high Swirl number.
キーワード
Ultrafiltration
Water purification
Swirling flow
Helical coil
Process intensification
カテゴリ
工学研究科
学術雑誌論文
権利
©2017 Elsevier B.V.
This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
詳細を表示
資源タイプ
journal article
言語
English (英語)
ISSN
1383-5866
OPACで所蔵を検索
CiNiiで学外所蔵を検索
eISSN
1873-3794
OPACで所蔵を検索
CiNiiで学外所蔵を検索
関連情報
DOI
https://doi.org/10.1016/j.seppur.2017.07.012
ホームへ戻る