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| 污泥基活性炭制备改性及其吸附甲苯性能 | |
| 引用本文： | 李石,邢亚彬,孙慧,杜改平,戴安国,赵东风.污泥基活性炭制备改性及其吸附甲苯性能[J].化工进展,2020,39(6):2463-2471. |
| 作者姓名： | 李石 邢亚彬 孙慧 杜改平 戴安国 赵东风 |
| 作者单位： | 1.中国石油大学（华东）化学工程学院，山东 青岛 266580;2.青岛欧赛斯环境与安全技术有限责任公司，山东 青岛 266555;3.中国石油大学（华东）安全环保与节能技术中心，山东 青岛 266580 |
| 基金项目： | 山东省自然科学基金;中央高校基本科研业务费专项 |
| 摘 要： | 以石化企业干化剩余活性污泥为炭源前体、ZnCl2溶液为活化剂，在613℃条件下炭化70min制得了碘值为683.40mg/g、产率为55.5%的污泥基活性炭（SAC，sludge-based activated carbon）样品，并进一步利用不同浓度的HNO3、H2SO4和H2O2溶液为改性剂对SAC氧化改性，通过碘值测定、BET、Boehm滴定、ICP、FTIR、XRD、SEM、TEM等手段对改性前后SAC样品进行了表征分析和对比研究。结果表明，HNO3和H2SO4改性后SAC的BET比表面积、孔容、碘值均明显增加，可有效提高SAC吸附性能，当HNO3浓度为0.5mol/L、H2SO4浓度为1.0mol/L时改性效果最好，动态吸附甲苯的吸附量较改性前分别提高了38.80%和27.19%，吸附穿透时间也明显延长；而对于H2O2溶液为改性剂，总体上不利于SAC吸附性能的提高。对甲苯吸附效果最好的几种改性SAC材料进行再生性能测试，均展现了良好的再生循环利用性能。 |
| 关 键 词： | 石化企业 剩余活性污泥 污泥基活性炭 制备改性 甲苯吸附 |
Preparation and modification of sludge based activated carbon and their performance of toluene adsorption |
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| LI Shi,XING Yabin,SUN Hui,DU Gaiping,DAI Anguo,ZHAO Dongfeng.Preparation and modification of sludge based activated carbon and their performance of toluene adsorption[J].Chemical Industry and Engineering Progress,2020,39(6):2463-2471. | |
| Authors: | LI Shi XING Yabin SUN Hui DU Gaiping DAI Anguo ZHAO Dongfeng |
| Affiliation: | 1.College of Chemical Engineering, China University of Petroleum (East China), Qingdao 266580, Shandong, China 2.Qingdao Oasis Environmental and Safety Technology Co. , Ltd. ，Qingdao 266555, Shandong, China 3.Center for Safety, Environmental & Energy Conservation Technology, China University of Petroleum (East China), Qingdao 266580, Shandong, China |
| Abstract: | The sample of sludge-based activated carbon (SAC) with iodine value of 683.40mg/g and yield of 55.5% was prepared by using the dried activated sludge from petrochemical enterprises as carbon source and ZnCl2 solution as activator. The carbonization condition was 613℃ and 70min. HNO3, H2SO4 and H2O2 solutions with different concentrations were used to modify the properties of obtained SAC. Iodine value, BET, Boehm titration, ICP, FT-IR, XRD, SEM and TEM were used to characterize different SAC samples. The results indicated that the BET surface area, pore volume, iodine value of SAC increased obviously after modification of HNO3 and H2SO4, which could enhance the SAC’s adsorption ability efficiently. When the concentrations of HNO3 and H2SO4 were 0.5mol/L and 1.0mol/L, the modification effects to SAC were better than other concentration conditions. Compared to original SAC， the adsorption amounts of toluene increased by 38.80% and 27.19%, respectively and the adsorption penetration time extended. But the modifiers of H2O2 solution were not favorable to the modification of SAC. Finally, the regeneration abilities of modified SAC were tested and the modified SAC displayed excellent abilities of recycling utilization. |
| Keywords: | petrochemical enterprises excess activated sludge sludge-based activated carbon preparation and modification toluene adsorption |
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