Details
| Original language | English |
|---|---|
| Pages (from-to) | 6370-6381 |
| Number of pages | 12 |
| Journal | Journal of Environmental Chemical Engineering |
| Volume | 6 |
| Issue number | 5 |
| Early online date | 2 Oct 2018 |
| Publication status | Published - Oct 2018 |
Abstract
In this work, different recalcitrant organic compounds including biologically treated palm oil mill effluent (POME), diazinon and paraquat dichloride and natural dye from algal growth in Solaymanshah's dam was degraded using a novel highly efficient magnetically visible driven photocatalyst (boron doped TiO 2-SiO 2 cobalt ferrite) which was synthesized by a sol gel hydrothermal method. The prepared nanocomposites were characterized by UV-vis diffuse reflectance (DRS) spectroscopy, X-ray diffraction (XRD), photoluminescence (PL), Fourier transform infrared (FT-IR), field emission scanning electron microscopy (FESEM) and vibrating sample magnetometer (VSM) analyses. The results revealed that boron doped-TiO 2-SiO 2 cobalt ferrite nanocomposite not only expanded the response region to the visible light but also reduced recombination of the photoinduced e -/h + pairs. The effects of various parameters, such as COD concentrations (300-800 mg/l), photocatalyst concentration (1.5-3.5 g/l) and pH (3-11) on the photocatalytic process were also evaluated. The COD contents was completely removed for the biologically treated POME, paraquat dichloride, diazinon, natural dye from algal growth in Solaymanshah dam's after 4/5, 3/5, 3 and 2/5 h, respectively at optimum conditions (initial COD concentration of 300 mg/l, catalyst loading 2/5 g/l and pH of 3). Furthermore, the magnetic nanocomposite can be easily recovered and separated with an extra magnet with a small loss of 0.01-0.05 g/l corresponding to 0.4-2 %. After being reused for three times, the reduction of COD removal efficiency of the natural dyes, diazinon, paraquat dichloride and biologically treated POME was about 1, 1, 3 and 4%, respectively that confirmed the photocatalytic stability of nanocomposite.
Keywords
- Magnetic CoFe O nanoparticles, Recalcitrant compounds, Separable visible driven photocatalyst, Wastewater treatment under sun light
ASJC Scopus subject areas
- Chemical Engineering(all)
- Chemical Engineering (miscellaneous)
- Environmental Science(all)
- Waste Management and Disposal
- Environmental Science(all)
- Pollution
- Chemical Engineering(all)
- Process Chemistry and Technology
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In: Journal of Environmental Chemical Engineering, Vol. 6, No. 5, 10.2018, p. 6370-6381.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Photomineralization of recalcitrant wastewaters by a novel magnetically recyclable boron doped-TiO2-SiO2 cobalt ferrite nanocomposite as a visible-driven heterogeneous photocatalyst
AU - Zangeneh, H.
AU - Zinatizadeh, A.A.
AU - Feyzi, M.
AU - Zinadini, S.
AU - Bahnemann, D.W.
N1 - Funding information: The authors would like to thank Kermanshah’s Municipal Water and Wastewater Company (Grant no.: 14579/94/129 ) for their full financial support. The authors also thank the Razi University Research Council for support of this work.
PY - 2018/10
Y1 - 2018/10
N2 - In this work, different recalcitrant organic compounds including biologically treated palm oil mill effluent (POME), diazinon and paraquat dichloride and natural dye from algal growth in Solaymanshah's dam was degraded using a novel highly efficient magnetically visible driven photocatalyst (boron doped TiO 2-SiO 2 cobalt ferrite) which was synthesized by a sol gel hydrothermal method. The prepared nanocomposites were characterized by UV-vis diffuse reflectance (DRS) spectroscopy, X-ray diffraction (XRD), photoluminescence (PL), Fourier transform infrared (FT-IR), field emission scanning electron microscopy (FESEM) and vibrating sample magnetometer (VSM) analyses. The results revealed that boron doped-TiO 2-SiO 2 cobalt ferrite nanocomposite not only expanded the response region to the visible light but also reduced recombination of the photoinduced e -/h + pairs. The effects of various parameters, such as COD concentrations (300-800 mg/l), photocatalyst concentration (1.5-3.5 g/l) and pH (3-11) on the photocatalytic process were also evaluated. The COD contents was completely removed for the biologically treated POME, paraquat dichloride, diazinon, natural dye from algal growth in Solaymanshah dam's after 4/5, 3/5, 3 and 2/5 h, respectively at optimum conditions (initial COD concentration of 300 mg/l, catalyst loading 2/5 g/l and pH of 3). Furthermore, the magnetic nanocomposite can be easily recovered and separated with an extra magnet with a small loss of 0.01-0.05 g/l corresponding to 0.4-2 %. After being reused for three times, the reduction of COD removal efficiency of the natural dyes, diazinon, paraquat dichloride and biologically treated POME was about 1, 1, 3 and 4%, respectively that confirmed the photocatalytic stability of nanocomposite.
AB - In this work, different recalcitrant organic compounds including biologically treated palm oil mill effluent (POME), diazinon and paraquat dichloride and natural dye from algal growth in Solaymanshah's dam was degraded using a novel highly efficient magnetically visible driven photocatalyst (boron doped TiO 2-SiO 2 cobalt ferrite) which was synthesized by a sol gel hydrothermal method. The prepared nanocomposites were characterized by UV-vis diffuse reflectance (DRS) spectroscopy, X-ray diffraction (XRD), photoluminescence (PL), Fourier transform infrared (FT-IR), field emission scanning electron microscopy (FESEM) and vibrating sample magnetometer (VSM) analyses. The results revealed that boron doped-TiO 2-SiO 2 cobalt ferrite nanocomposite not only expanded the response region to the visible light but also reduced recombination of the photoinduced e -/h + pairs. The effects of various parameters, such as COD concentrations (300-800 mg/l), photocatalyst concentration (1.5-3.5 g/l) and pH (3-11) on the photocatalytic process were also evaluated. The COD contents was completely removed for the biologically treated POME, paraquat dichloride, diazinon, natural dye from algal growth in Solaymanshah dam's after 4/5, 3/5, 3 and 2/5 h, respectively at optimum conditions (initial COD concentration of 300 mg/l, catalyst loading 2/5 g/l and pH of 3). Furthermore, the magnetic nanocomposite can be easily recovered and separated with an extra magnet with a small loss of 0.01-0.05 g/l corresponding to 0.4-2 %. After being reused for three times, the reduction of COD removal efficiency of the natural dyes, diazinon, paraquat dichloride and biologically treated POME was about 1, 1, 3 and 4%, respectively that confirmed the photocatalytic stability of nanocomposite.
KW - Magnetic CoFe O nanoparticles
KW - Recalcitrant compounds
KW - Separable visible driven photocatalyst
KW - Wastewater treatment under sun light
UR - http://www.scopus.com/inward/record.url?scp=85054767135&partnerID=8YFLogxK
U2 - 10.1016/j.jece.2018.10.001
DO - 10.1016/j.jece.2018.10.001
M3 - Article
VL - 6
SP - 6370
EP - 6381
JO - Journal of Environmental Chemical Engineering
JF - Journal of Environmental Chemical Engineering
IS - 5
ER -