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- W4213160120 abstract "Co-pyrolysis of sludge and biomass was conducted to produce biochar with heavy metals solidification. The synergistic coupling mechanism and the surface functional groups and pore structure characteristics of co-pyrolytic biochar were studied. The solidification characteristics and mechanism of heavy metals were also investigated. Biomass composition in the co-pyrolysis system provided energy, solidified heavy metals and improved product quality. Compared with the weighted calculated value of two individual materials, the secondary decomposition process of co-pyrolysis was prolonged by approximately 80 °C and enhanced by 29%. O H bond, C H bond, and C O bond of co-pyrolytic biochar obtained at 500 °C increased significantly, and the carbon network structure and skeleton were enhanced, and the specific surface area increased by 102.8%, comparing with that of sludge biochar. The solidification effect of Cu and Cd in co-pyrolytic biochar was 29% and 50% higher than that in sludge biochar, respectively. The leaching rates of Cu and Cd in co-pyrolytic biochar were only 38.22% and 39.54% of that from sludge biochar. This study demonstrated that high-quality biochar with low heavy metal risk can be obtained by co-pyrolysis technology, which provides a potential way for the comprehensive utilization of industrial sludge and biomass. • Co-pyrolysis of industrial sludge and biomass for biochar production was conducted. • Synergetic mechanism of industrial sludge and rice straw co-pyrolysis was studied. • Co-pyrolytic biochar exhibited more developed pore structure and functional groups. • Addition of biomass enhanced solidification of heavy metals in co-pyrolytic biochar." @default.
- W4213160120 created "2022-02-24" @default.
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- W4213160120 date "2022-06-01" @default.
- W4213160120 modified "2023-10-12" @default.
- W4213160120 title "Co-pyrolysis of industrial sludge and rice straw: Synergistic effects of biomass on reaction characteristics, biochar properties and heavy metals solidification" @default.
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- W4213160120 doi "https://doi.org/10.1016/j.fuproc.2022.107211" @default.
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