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Preparation and Properties Characterization of Thin-layer Deinking Paper Sludge-based Activated Carbon with a High Mesopore Ratio
Received:December 02, 2021  
DOI：10.11980/j.issn.0254-508X.2022.05.002
Key Words:deinking sludge  KOH  deashing  ball mill  activated carbon
Fund Project:泰山学者工程。
Author NameAffiliationPostcode
DAI Yuzhuo State Key Lab of Bio-based Materials and Green Papermaking， Qilu University of Technology （Shandong Academy of Sciences）， Ji’nan，Shandong Province，250353 250353
JI Xingxiang State Key Lab of Bio-based Materials and Green Papermaking， Qilu University of Technology （Shandong Academy of Sciences）， Ji’nan，Shandong Province，250353 250353
TIAN Zhongjian* State Key Lab of Bio-based Materials and Green Papermaking， Qilu University of Technology （Shandong Academy of Sciences）， Ji’nan，Shandong Province，250353
Department of Bioengineering， Qilu University of Technology （Shandong Academy of Sciences）， Ji’nan，Shandong Province，250353 		250353
MA Hao State Key Lab of Bio-based Materials and Green Papermaking， Qilu University of Technology （Shandong Academy of Sciences）， Ji’nan，Shandong Province，250353 250353
ZHANG Fengshan Shandong Huatai Paper Co.， Ltd.， Dongying， Shandong Province，257335 257335
FANG Guigan Institute of Chemical Industry of Forest Products， CAF ，Nanjing， Jiangsu Province，210042 210042
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Abstract:The preparation of deinking paper sludge-based activated carbon （DPS-AC） with a thin-layer and high mesopores ratio structure by using deinking paper sludge （DPS） as raw material， via twice deashing with hot water and hydrochloric acid pickling， KOH activation， and ball milling assistance was discussed in this study. The results showed that the optimal process conditions for the preparation of DPS-AC were that hot water pretreatment and acid washing treatment for two deashing， KOH solution concentration of 6.5 mol/L， solid-liquid ratio of 1∶2， carbonization temperature of 750℃， time of 90 min， and 250 r/min intermittent ball milling for 180 min. The DPS-AC prepared under these conditions had an iodine adsorption capacity of 657.50 mg/g， a methylene blue adsorption capacity of 230.69 mg/g， a specific surface area of 595.138 m2/g， a total pore volume of 0.646 cm3/g， an average pore diameter of 4.339 nm， and mesoporous well-developed structure.
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