Characterization of nano zero-valent iron (nZVI) and its application in sono-Fenton process to remove COD in palm oil mill effluent

Evaluation of highly active nanoscale zero-valent iron coupled with ultrasound for chromium(VI) removal

“…It was demonstrated that after introducing ultrasound to nZVI/contaminant systems, the chemical reaction between nZVI and the contaminants was obviously accelerated [20][21][22][23][24][25][26]. For example, Liang et al [21] reported that ultrasound could significantly improve the mixing and dispersion of nZVI and enormously accelerate the heterogeneous reaction between nZVI and nitrite.…”

Fe Oxides Loaded on Carbon Cloth by Hydrothermal Process as an Effective and Reusable Heterogenous Fenton Catalyst

“…The peaks at 710.98 eV and 724.50 eV correspond to the binding energy of Fe 2P3/2 and Fe 2P1/2 respectively in Fe2O3 according to the literatures [23]. As shown in Figure 1A, the spectra peaks at 712.20 eV correspond to the binding energy of Fe 2P3/2 in FeOOH [24][25][26][27]. In Figure 1B, the O 1s peak of binding energy at 530.20 eV represents the lattice oxygen in iron (III) oxide, and the peak at 531.50 eV represents the hydroxyl group linked with Fe(III) [28].…”

Automotive fleet repair facility wastewater treatment using air/ZVI and air/ZVI/H2O2 processes

“…Moreover Taha and Ibrahim (2014) found that for palm oil mill effl uent treated withZVI,sonifi cation intensity and duration time have a weak correlation with Fe 2+ production and COD decrease. They found by referring to shell -core concept, that at pH 3.0 and 4.0 only a small amount of Fe 2+ was in aqueous solution resulting from partially dissolved shell.…”

“…In order to avoid these disadvantages, zero valent iron (ZVI) has appeared as an effective heterogeneous catalyst for wastewater treatment. ZVI and other iron based catalysts were used inter alia for the treatment of dye (Chang et al 2006, Devi et al 2009, Grcic et al 2012, Moon et al 2011, Weng et al 2013, Zhang et al 2014, Yang et al 2015a, Yang et al 2015b, nitrobenzene (Dong et al 2010), 2,4-dinitroanisole (Shen et al 2013), pharmaceutical compounds (Bautitz et al 2012, Segura et al 2013, TNT wastewater (Barreto-Rodrigues et al 2009), phenols and chlorophenols (Kim et al 2011, Shimizu et al 2012, pesticides (Fjordboge et al 2013), BPA (Xi et al 2014) or coking wastewater (Lai et al 2007), palm oil mill effl uent (Taha and Ibrahim 2014), nitrites reduction (Fatemina et al 2013, Suzuki et al 2012, oil sands reclamation (Pourrezaei et al 2014), and surfactants removal (Martins et al 2014). …”