石化企业剩余活性污泥基活性炭制备及吸附甲苯气体的研究

doi:10.11896/cldb.19080061

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Abstract Sludge-based activated carbon was prepared by orthogonal experiment with residual activated sludge from petrochemical enterprises as precursor and applied to the adsorption of toluene in typical VOCs gas. The results showed that the SAC prepared at 613 ℃, 1∶2 solid-liquid ratio, 4 mol/L activator concentration, 15 ℃/min heating rate and 70 min carbonization time had the best performance. The gas-phase adsorption capacity of low concentration toluene on the unit mass (g) sample reached 232.830 mg. Meanwhile, SEM, BET, FT-IR, XRD, TEM and other characterizations of SAC prepared without activator and under optimal conditions were analyzed and compared, and the changes of element contents in sludge and SAC were compared. The results showed that the activated SAC had abundant pore structure, increased specific surface area, increased surface acidic functional groups, increased carbon content and excellent toluene adsorption. SAC was prepared by drying excess activated sludge from petrochemical enterprises and toluene gas was adsorbed. The purpose of “turning waste into treasure” and resource utilization was realized.

Key words： petrochemical enterprises drying sludge SAC gas adsorption toluene

Published: 24 July 2020

CLC number:

X705

Fund:This work was financially supported by the Project of Shandong Natural Science Foundation (ZR201702150018), Funds for Basic Scientific Research in Central Colleges and Universities (17CX05017).

About author:: Shi Li, associate professor, master’s supervisor, College of Chemical Engineering, China University of Petroleum (East China). In July 2009, he received his doctorate from China University of Petroleum (East China). During that time, he studied at the National University of Singapore and studied at Texas Agricultural and Industrial University as a visiting scholar. Presiding over national, provincial and ministerial research projects. The main research directions are VOCs treatment technology research, new environmental protection materials research, etc.
Yabin Xinggraduated from Hebei University of Science and Technology in June 2017 with a bachelor’s degree in environmental science. Now he is a postgraduate student of China University of Petroleum (East China). Under the guidance of Professor Li Shi, he conducts research on the subject. At present, the preparation and modification of activated carbon based on sludge are mainly studied.
Dongfeng Zhao, professor, Ph.D. supervisor, Ministry of Education Outstanding Talents Support Program in the New Century, National Safety Production Expert Group, National Environmental Protection Expert Group, National Energy Conservation Center Expert Group, director of CCPS-CS, Chemical Process Safety Center of American Chemical Engineers Association, etc. He has been engaged in the research of chemical safety and environmental protection for a long time. He has published such academic monographs as Chemical Process Safety: Fundamentals with Applications (Third Edition), A Practical Approach to Hazard Identification for Operations and Maintenance Workers, Analysis of Process Safety Accidents, etc. He has presided over and participated in the construction of many scientific research platforms, and has published more than 30 related scientific research articles in SCI.

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	LI Shi
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Cite this article:

LI Shi,XING Yabin,ZHAO Dongfeng, et al. Study on Preparation of Activated Carbon Based on Excess Activated Sludge and Adsorption of Toluene Gas in Petrochemical Enterprises[J]. Materials Reports, 2020, 34(16): 16066-16071.

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http://www.mater-rep.com/EN/10.11896/cldb.19080061 OR http://www.mater-rep.com/EN/Y2020/V34/I16/16066

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