From the pore analysis of the CC products, it indicated an increasing trend, as the BET surface area greatly increased from about 1.0 to 44.30 m 2 /g.
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Production of Mesoporous Magnetic Carbon Materials from Oily Sludge by Combining Thermal Activation and Post-Washing.
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The sentences
It indicated a decreasing trend in the reuse of this oily sludge as the treatment by self-combustion and off-site disposal increased accordingly.