Abstract
Three biochars from wheat straw(WSC), chicken manure(CMC) and rice husk(RHC) were prepared as persulfate(PS) activators for p-nitropheol(PNP) removal. RHC exhibitted the best adsorption performance, followed by WSC and CMC, which was consistant with the surface area value. PS addition further promoted the PNP removal, indicating that a synergistic effect existed in the biochar/PS combined system. The composition and textual properties of biochar had a significant effect on the reactivity of activator and the function groups containing oxgygen or nitrogen might play important roles in the reaction. WSC could perform efficiently over a pH range from 4.4 to 10.4. The decrease in activation performance in cycle experiments was possiblely related to the loss of oxgygen-containing groups.
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Supported by the National Natural Science Foundation of China(No.51608276), the Natural Science Foundation of Jiangsu Province, China(No.BK20150978) and the Natural Science Foundation of the Higher Education Institutions of Jiangsu Province, China(No.15KJB610008).
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Shi, C., Li, Y., Feng, H. et al. Removal of p-nitrophenol using persulfate activated by biochars prepared from different biomass materials. Chem. Res. Chin. Univ. 34, 39–43 (2018). https://doi.org/10.1007/s40242-017-7245-0
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DOI: https://doi.org/10.1007/s40242-017-7245-0