Iron oxide coated sand (IOS): Scale-up analysis and full-scale application for phosphorus removal from goat farm wastewater
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Iron oxide coated sand (IOS) : Scale-up analysis and full-scale application for phosphorus removal from goat farm wastewater. / Zhang, Rui; Wang, Lutian; Lakho, Fida Hussain; Yang, Xuetong; Depuydt, Veerle; Igodt, Wouter; Le, Hong Quan; Rousseau, Diederik P. L.; Van Hulle, Stijn.
In: Separation and Purification Technology, Vol. 284, 120213, 2022.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Iron oxide coated sand (IOS)
T2 - Scale-up analysis and full-scale application for phosphorus removal from goat farm wastewater
AU - Zhang, Rui
AU - Wang, Lutian
AU - Lakho, Fida Hussain
AU - Yang, Xuetong
AU - Depuydt, Veerle
AU - Igodt, Wouter
AU - Le, Hong Quan
AU - Rousseau, Diederik P. L.
AU - Van Hulle, Stijn
N1 - Publisher Copyright: © 2021 Elsevier B.V.
PY - 2022
Y1 - 2022
N2 - Effective eutrophication control, especially for decentralized wastewater treatment, has received increasing attention in recent years. In view of this, iron oxide coated sand (IOS) granules, a recycled waste product from the drinking water industry, was investigated for phosphorus removal from goat farm wastewater, both at laboratory-scale and at full-scale. Brunauer-Emmett-Teller adsorption revealed a high specific surface area (249 m2/g) of the IOS. Fourier Transform Infrared Spectroscopy and X-ray Diffraction demonstrated that Fe(III) compounds are the main functional component and Scanning Electron Microscopy with Energy Dispersive X-ray Spectroscopy showed that Fe and O elements covered more than 84% of the surface of the IOS. The IOS granules showed good phosphorus adsorption capacity over a wide pH range during laboratory-scale batch tests. Moreover, the phosphorus adsorption was very fast and the residual phosphorus concentration dropped below 0.02 mg/L within an hour at a dosage of 20 g/L. After adsorption, the exhausted IOS could be regenerated by using 0.5 M KOH, and more than 80% adsorption capacity remained. Laboratory-scale column tests with real wastewater originating from a goat farm were run and Bed Depth Service Time and Bohart–Adams models were applied in view of scale-up. Based on this, a full-scale IOS based fixed bed reactor was designed, built and tested at a goat farm. A TP removal efficiency of 99% with a 0.87 m3 IOS fixed bed reactor (fed at 2.2 m3/d) was obtained. The TP concentration in the effluent remained below 0.3 mg/L for nearly 400 days, achieving long term TP removal. This study demonstrates that IOS based treatment is an ecological and environmentally friendly method, suitable for full-scale (decentralized) wastewater treatment.
AB - Effective eutrophication control, especially for decentralized wastewater treatment, has received increasing attention in recent years. In view of this, iron oxide coated sand (IOS) granules, a recycled waste product from the drinking water industry, was investigated for phosphorus removal from goat farm wastewater, both at laboratory-scale and at full-scale. Brunauer-Emmett-Teller adsorption revealed a high specific surface area (249 m2/g) of the IOS. Fourier Transform Infrared Spectroscopy and X-ray Diffraction demonstrated that Fe(III) compounds are the main functional component and Scanning Electron Microscopy with Energy Dispersive X-ray Spectroscopy showed that Fe and O elements covered more than 84% of the surface of the IOS. The IOS granules showed good phosphorus adsorption capacity over a wide pH range during laboratory-scale batch tests. Moreover, the phosphorus adsorption was very fast and the residual phosphorus concentration dropped below 0.02 mg/L within an hour at a dosage of 20 g/L. After adsorption, the exhausted IOS could be regenerated by using 0.5 M KOH, and more than 80% adsorption capacity remained. Laboratory-scale column tests with real wastewater originating from a goat farm were run and Bed Depth Service Time and Bohart–Adams models were applied in view of scale-up. Based on this, a full-scale IOS based fixed bed reactor was designed, built and tested at a goat farm. A TP removal efficiency of 99% with a 0.87 m3 IOS fixed bed reactor (fed at 2.2 m3/d) was obtained. The TP concentration in the effluent remained below 0.3 mg/L for nearly 400 days, achieving long term TP removal. This study demonstrates that IOS based treatment is an ecological and environmentally friendly method, suitable for full-scale (decentralized) wastewater treatment.
KW - Adsorption
KW - Full-scale demonstration
KW - Goat farm wastewater
KW - Iron oxide coated sand granules (IOS)
KW - Phosphorus removal
KW - Scale-up
U2 - 10.1016/j.seppur.2021.120213
DO - 10.1016/j.seppur.2021.120213
M3 - Journal article
AN - SCOPUS:85120916112
VL - 284
JO - Gas Separation and Purification
JF - Gas Separation and Purification
SN - 1383-5866
M1 - 120213
ER -
ID: 289228817