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- W4296363191 abstract "In this study, to simultaneously dispose of sludge and wastewater containing heavy metals, sludge biochar loaded with nano zero-valent-iron (nZVI) was prepared at 700 °C (nBC700) to remove Cr(VI) and Cu(II). The results showed the removal capacity of biochar was greatly improved by loading nZVI, and the adsorption capacities of biochar for Cu(II) and Cr(VI) increased by 251.96% and 205.18%. Pseudo-second-order kinetic and Sips isotherm models were fitted to the removal processes. Intraparticle diffusion models showed the removal process was controlled by surface diffusion and intraparticle diffusion. Competitive experiments showed Cr(VI) can compete with Cu(II) for active sites, but Cr(VI) was more easily removed by nBC700 through cation bridge. The removal mechanism illustrated removing Cu(II) mainly depended on complex precipitation, followed by reduction reaction, while Cr(VI) was on the contrary. This work provided effective data for sludge disposal and heavy metal removal." @default.
- W4296363191 created "2022-09-20" @default.
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- W4296363191 date "2022-09-19" @default.
- W4296363191 modified "2023-09-25" @default.
- W4296363191 title "Study on the performance of sewage sludge biochar modified by nZVI to remove Cu(II) and Cr(VI) in water" @default.
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- W4296363191 doi "https://doi.org/10.2166/wst.2022.302" @default.
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