Magnetic Fixed-bed Column for Cr(VI) Removal from Aqueous Solution Using Schwertmannite

Akbar Eskandarpour, Maurice S. Onyango, Mitsuru TANAHASHI , Aoyi Ochieng, YOSHIYUKI BANDO, KAZUHIKO IWAI, Masazumi OKIDO, Shigeo Asai

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

The fine particles of schwertmannite as an iron oxyhydroxide adsorbent has been suggested as a novel and strong Cr(VI) sorbent for treatment of Cr-contaminated industrial wastewater. The removal process was conducted in both batch and continuous trials. As a result of the batch experiments, the maximal adsorption capacity of the schwertmannite was obtained as 178 mg/g which was quite high amount in comparison with the usual applied Cr(VI) sorbents in the literatures. The continuous removal process involved a combination of a fixed bed column with a high gradient magnetic field which was firstly introduced as a novel designation of a fixed bed column to overcome the difficulties accompanied with the application of some especial fine particle adsorbents through the fixed-beds. The experimental results revealed that the magnetization force had a great function in this process to control the shape and the fitness of the bed during the sorption test as well as to simplify the experimental set-up.
Original languageEnglish
Pages (from-to)240-244
Number of pages5
JournalISIJ International
Volume48
Issue number2
Publication statusPublished - 2007

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Sorbents
Adsorbents
Sorption
Magnetization
Wastewater
Magnetic fields
Iron
Adsorption
Experiments
chromium hexavalent ion
schwertmannite
ferric hydroxide

Cite this

Eskandarpour, A., Onyango, M. S., TANAHASHI , M., Ochieng, A., BANDO, YOSHIYUKI., IWAI, KAZUHIKO., ... Asai, S. (2007). Magnetic Fixed-bed Column for Cr(VI) Removal from Aqueous Solution Using Schwertmannite. ISIJ International, 48(2), 240-244.
Eskandarpour, Akbar ; Onyango, Maurice S. ; TANAHASHI , Mitsuru ; Ochieng, Aoyi ; BANDO, YOSHIYUKI ; IWAI, KAZUHIKO ; OKIDO, Masazumi ; Asai, Shigeo. / Magnetic Fixed-bed Column for Cr(VI) Removal from Aqueous Solution Using Schwertmannite. In: ISIJ International. 2007 ; Vol. 48, No. 2. pp. 240-244.
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author = "Akbar Eskandarpour and Onyango, {Maurice S.} and Mitsuru TANAHASHI and Aoyi Ochieng and YOSHIYUKI BANDO and KAZUHIKO IWAI and Masazumi OKIDO and Shigeo Asai",
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Eskandarpour, A, Onyango, MS, TANAHASHI , M, Ochieng, A, BANDO, YOSHIYUKI, IWAI, KAZUHIKO, OKIDO, M & Asai, S 2007, 'Magnetic Fixed-bed Column for Cr(VI) Removal from Aqueous Solution Using Schwertmannite', ISIJ International, vol. 48, no. 2, pp. 240-244.

Magnetic Fixed-bed Column for Cr(VI) Removal from Aqueous Solution Using Schwertmannite. / Eskandarpour, Akbar; Onyango, Maurice S.; TANAHASHI , Mitsuru; Ochieng, Aoyi; BANDO, YOSHIYUKI; IWAI, KAZUHIKO; OKIDO, Masazumi; Asai, Shigeo.

In: ISIJ International, Vol. 48, No. 2, 2007, p. 240-244.

Research output: Contribution to journalArticle

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T1 - Magnetic Fixed-bed Column for Cr(VI) Removal from Aqueous Solution Using Schwertmannite

AU - Eskandarpour, Akbar

AU - Onyango, Maurice S.

AU - TANAHASHI , Mitsuru

AU - Ochieng, Aoyi

AU - BANDO, YOSHIYUKI

AU - IWAI, KAZUHIKO

AU - OKIDO, Masazumi

AU - Asai, Shigeo

PY - 2007

Y1 - 2007

N2 - The fine particles of schwertmannite as an iron oxyhydroxide adsorbent has been suggested as a novel and strong Cr(VI) sorbent for treatment of Cr-contaminated industrial wastewater. The removal process was conducted in both batch and continuous trials. As a result of the batch experiments, the maximal adsorption capacity of the schwertmannite was obtained as 178 mg/g which was quite high amount in comparison with the usual applied Cr(VI) sorbents in the literatures. The continuous removal process involved a combination of a fixed bed column with a high gradient magnetic field which was firstly introduced as a novel designation of a fixed bed column to overcome the difficulties accompanied with the application of some especial fine particle adsorbents through the fixed-beds. The experimental results revealed that the magnetization force had a great function in this process to control the shape and the fitness of the bed during the sorption test as well as to simplify the experimental set-up.

AB - The fine particles of schwertmannite as an iron oxyhydroxide adsorbent has been suggested as a novel and strong Cr(VI) sorbent for treatment of Cr-contaminated industrial wastewater. The removal process was conducted in both batch and continuous trials. As a result of the batch experiments, the maximal adsorption capacity of the schwertmannite was obtained as 178 mg/g which was quite high amount in comparison with the usual applied Cr(VI) sorbents in the literatures. The continuous removal process involved a combination of a fixed bed column with a high gradient magnetic field which was firstly introduced as a novel designation of a fixed bed column to overcome the difficulties accompanied with the application of some especial fine particle adsorbents through the fixed-beds. The experimental results revealed that the magnetization force had a great function in this process to control the shape and the fitness of the bed during the sorption test as well as to simplify the experimental set-up.

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Eskandarpour A, Onyango MS, TANAHASHI M, Ochieng A, BANDO YOSHIYUKI, IWAI KAZUHIKO et al. Magnetic Fixed-bed Column for Cr(VI) Removal from Aqueous Solution Using Schwertmannite. ISIJ International. 2007;48(2):240-244.