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| Research on Modification of Activated Carbon from Deinking Sludge |
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| DOI：10.11981/j.issn.1000-6842.2019.03.31 |
| Key Words:deinking sludge; activated carbon; activated carbon modifying; Cr（VI）ion adsorption |
| Author Name | Affiliation | | WAN Yueliang | Tianjin Key Laboratory of Pulp & Paper， Tianjin University of Science & Technology, Tianjin， 300457 | | MENG Xiangmei | Tianjin Key Laboratory of Pulp & Paper， Tianjin University of Science & Technology, Tianjin， 300457 | | FENG Kun | Tianjin Key Laboratory of Pulp & Paper， Tianjin University of Science & Technology, Tianjin， 300457 | | KONG Huazheng | Tianjin Key Laboratory of Pulp & Paper， Tianjin University of Science & Technology, Tianjin， 300457 | | LIU Tingzhi* | Tianjin Key Laboratory of Pulp & Paper， Tianjin University of Science & Technology, Tianjin， 300457 |
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| Abstract: |
| The activated carbon prepared from deinking sludge was modified and applied to the adsorption of Cr（VI）ion， the optimal modification conditions were determined as follows: modifier was 10 mol/L HNO3， 1∶15 （m∶V）， modification time 2.0 h. The modified activated carbon was used to remove Cr（VI） ion from waste water. When the amount of modified activated carbon was 5 g/L， the removal rate and adsorption capacity of Cr（VI）ion were 83.9% and 25.17 mg/g， respectively， and the adsorption capacity increased by 140.3% compared with that of unmodified activated carbon， the iodine adsorption value and methylene blue adsorption value of the activated carbon were 543.92 mg/g and 103.5 mg/g respectively， the iodine adsorption capacity increased by 28.9%. The specific surface area of activated carbon was 1020.161 m2/g， increased by 42.6%， the total pore volume was about 0.608 cm3/g， increased by 72.4% and the mesopore volume was about 0.393 cm3/g， increased by 14.2%， based on the calculation by the N2 adsorption-desorption experiment． |
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