Analysis of Detoxification Effect of Benzo[ a] pyrene in Polymer Modification ofthe Medium Temperature Coal-tar Pitch

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Analysis of Detoxification Effect of Benzo[ a] pyrene in Polymer Modification ofthe Medium Temperature Coal-tar Pitch

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[1]LI Ruixia,LI Jiahui,JIANG Zhifu,et al.Analysis of Detoxification Effect of Benzo[ a] pyrene in Polymer Modification ofthe Medium Temperature Coal-tar Pitch[J].Journal of Zhengzhou University (Engineering Science),2024,45(05):119-127.[doi:10.13705/j.issn.1671-6833.2024.05.008]

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Journal of Zhengzhou University (Engineering Science)[ISSN 1671-6833/CN 41-1339/T] Volume: 45 Number of periods: 2024 05 Page number: 119-127 Column: Public date: 2024-08-08

Title:: Analysis of Detoxification Effect of Benzo[ a] pyrene in Polymer Modification ofthe Medium Temperature Coal-tar Pitch

Author(s):: LI Ruixia¹; 2; LI Jiahui¹; 3; JIANG Zhifu¹; ZHANG Yadong⁴; 5; YUE Jinzhao¹; 1. School of Water Conservancy and Transportation, Zhengzhou University, Zhengzhou 450001, China; 2. Henan Provincial Engineering Laboratory of Coal-based Ecological Fine Chemicals, Jiyuan 454650, China; 3. Henan Communications Planning and Design Institute Co. ,Ltd. , Zhengzhou 451460, China; 4. School of Chemical Engineering, Zhengzhou University, Zhengzhou 450001, China;5. JiYuan Research Institute, Zhengzhou University, Jiyuan 454750, China

Keywords:: coal-tar pitch; polycyclic aromatic hydrocarbons; benzo[ a] pyrene; single modifier; composite modifier; removal rate

CLC:: U414TQ522. 65

DOI:: 10.13705/j.issn.1671-6833.2024.05.008

Abstract:: In order to reduce the content of carcinogenic polycyclic aromatic hydrocarbons in coal asphalt and realize its green application, polyurethane monomer, trioxymethylene, polyethylene glycol, divinyl benzene and epoxyresin were respectively used to react with coal-tar pitch alone or mixed. The removal rate of benzo [ a ] pyrene( BaP) , a representative carcinogen in coal-tar pitch, was used as an evaluation index to analyze the effects of eachsingle modifier and composite modifier on BaP in coal-tar pitch. The results showed that all the selected modifierscould effectively reduce the mass fraction of BaP in coal-tar pitch, the order of detoxification effect of a single modifier in descending was polyurethane monomer, trioxymethylene, polyethylene glycol, divinyl benzene, epoxy resin;the optimal combination (mass fraction) of composite modifiers was 6% polyurethane monomer +10% trioxymethylene +8% polyethylene glycol, which reduction rate of BaP could reach 82. 16% with the optimal reaction conditions.

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Last Update: 2024-09-02