Abstract
A novel biochar, whose precursor is popped rice, was produced to remove oil pollution in water. Popped rice biochar is characteristic with large pores. When popped rice was carbonized at 300 °C, its oil absorption capacity for paraffin oil is up to 10.88 ± 0.51 g/g, being much higher than that of the original popped rice (4.03 ± 0.39 g/g). In order to improve the oil-water separation property of popped rice biochar to absorb oil selectively, epoxy resin was used as a binder to make superhydrophobic SiO2 coated on the surface of popped rice biochar. The water contact angle of superhydrophobic SiO2 / popped rice biochar is 153 ± 0.9°, and it has good oil-absorption capacity with low water-absorption ratio. As the oil-absorption material is environmentally friendly, it will be a good select for the removal of oil pollution.
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All data generated or analysed during this study are included in this published article.
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This work was supported by the National Natural Science Foundation of China (Grant No. 51003030).
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Ying Jiang provide Superhydrophobic SiO2 and coating method, Xiaoye Huang prepared the popped rice biochar and analyzed the data, and was a major contributor in writing the manuscript. All authors read and approved the final manuscript.
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Huang, X., Jiang, Y. & Yu, R. Popped Rice Biochar and Superhydrophobic SiO2 / Popped Rice Biochar for Oil Adsorption. Silicon 13, 2661–2669 (2021). https://doi.org/10.1007/s12633-020-00621-z
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DOI: https://doi.org/10.1007/s12633-020-00621-z