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Physicochemical regeneration of industrial spent activated carbons using a green activating agent and their adsorption for methyl orange
Fagbohun, Emmanuel Oluwaseyi1,2; Wang, Qianyu1; Spessato, Lucas3; Zheng, Yuhua1; Li, Wenli1,2; Olatoye, Abiola Ganiyat1,2; Cui, Yanbin1,2
2022-04-01
Source PublicationSURFACES AND INTERFACES
ISSN2468-0230
Volume29Pages:15
AbstractThermal regeneration of spent activated carbons (SACs) is widely used in industry. However, low specific surface areas (SBET) of regenerated activated carbons (RACs) are achieved after thermal regeneration, constraining the adsorption of contaminants. Herein, a green chemical mixture of K2CO3 and KCl compared to conventional activating agents was used to regenerate SAC1 and SAC2, all prepared from plants and used to adsorb compounds in pharmaceutical and food factory respectively. Two kinds of RAC were used for the adsorption of methyl orange (MO). The SBET value of SAC1 after regeneration increased from 592 m(2) g(-1) to 1830 m(2) g(-1) with an abundance of micropores, and the SBET of SAC2 after regeneration increased from 3 m(2) g(-1) to 1802 m(2) g(-1) consisting of mesopores. A high carbon yield of 73% for RAC was achieved due to the presence of a KCl activating agent. A maximum MO adsorption capacity (Q(m)) of 733.73 mg g(-1) and 755.73 mg g(-1) was achieved for RAC1 and RAC2, respectively. After five cycles of adsorption-regeneration, the Q(m) of RAC1 and RAC2 was 577.66 mg g(-1) and 567.63 mg g(-1), and the SBET was 1122 m(2) g(-1) and 1101 m(2) g(-1), respectively. This work shows that the combination of K2CO3 and KCl can be used as an activating agent to achieve high specific surface area and carbon yield.
KeywordRegeneration Spent activated carbon Adsorption Green activating agent Methyl orange
DOI10.1016/j.surfin.2021.101696
Language英语
WOS KeywordCHEMICAL ACTIVATION ; POROUS CARBON ; THERMAL REGENERATION ; AQUEOUS-SOLUTION ; BLUE DYE ; REMOVAL ; WASTE ; BIOMASS ; COAL ; TECHNOLOGIES
Funding ProjectNational Natural Science Foundation of China[22076189]
WOS Research AreaChemistry ; Materials Science ; Physics
WOS SubjectChemistry, Physical ; Materials Science, Coatings & Films ; Physics, Applied ; Physics, Condensed Matter
Funding OrganizationNational Natural Science Foundation of China
WOS IDWOS:000764896400001
PublisherELSEVIER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/52402
Collection中国科学院过程工程研究所
Corresponding AuthorCui, Yanbin
Affiliation1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R China
3.Univ Estadual Maringa, Dept Chem, Multifunct Carbonaceous Mat Lab, Av Colombo 5790, Maringa, Parana, Brazil
Recommended Citation
GB/T 7714
Fagbohun, Emmanuel Oluwaseyi,Wang, Qianyu,Spessato, Lucas,et al. Physicochemical regeneration of industrial spent activated carbons using a green activating agent and their adsorption for methyl orange[J]. SURFACES AND INTERFACES,2022,29:15.
APA Fagbohun, Emmanuel Oluwaseyi.,Wang, Qianyu.,Spessato, Lucas.,Zheng, Yuhua.,Li, Wenli.,...&Cui, Yanbin.(2022).Physicochemical regeneration of industrial spent activated carbons using a green activating agent and their adsorption for methyl orange.SURFACES AND INTERFACES,29,15.
MLA Fagbohun, Emmanuel Oluwaseyi,et al."Physicochemical regeneration of industrial spent activated carbons using a green activating agent and their adsorption for methyl orange".SURFACES AND INTERFACES 29(2022):15.
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