Abstract
Effluents from the textile industry often contain dyes and metals that are a serious environmental concern. It is a challenge to develop a method for simultaneous removal of mixed contaminants. In this study, kaolinite supported bimetallic Fe/Pd (K–Fe/Pd) is firstly reported to be used for simultaneous catalytic removal of acid brilliant violet (ABV) and Cu2+ in aqueous solution, where the presence of kaolinite as a stable supporter and disperser maintains the reactivity of Fe0 as a reductant, while Pd0 as a catalyst accelerates the reaction. This was confirmed by scanning electron microscopy (SEM), X-ray diffraction (XRD), and batch experiments. 96.23 % of ABV and 100 % of Cu2+ was removed using K–Fe/Pd within 60 min, while only 77.50 % of ABV and 99.45 % of Cu2+ using K–Fe, and 19.75 % of ABV and 4.00 % of Cu2+ using kaolinite was removed, respectively. However, both efficiency and rate of removal in the mixed solution were higher than that of the single one regarding both ABV and Cu2+, which is attributable to the formation of in situ trimetallic Cu/Fe/Pd in the mixed solution. Different factors impacting on the removal of ABV–Cu2+ using K–Fe/Pd showed that the catalytic reduction decreased when pH, initial concentration, and temperature increased. Finally, the reuse and application of K–Fe/Pd in dyeing wastewater led to a removal efficiency of 96.35 % for ABV and 100 % for Cu2+, respectively.
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The project was supported by a Fujian “Minjiang Fellowship” from Fujian Normal University and the foundation of the Fujian Education Department (JA13071).
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Jin, X., Chen, Z., Wang, T. et al. Simultaneous removal of co-contaminants: acid brilliant violet and Cu2+ by functional bimetallic Fe/Pd nanoparticles. J Nanopart Res 16, 2657 (2014). https://doi.org/10.1007/s11051-014-2657-y
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DOI: https://doi.org/10.1007/s11051-014-2657-y