Edible fungus slag derived nitrogen-doped hierarchical porous carbon as a high-performance adsorbent for rapid removal of organic pollutants from water

[Display omitted] •The edible fungus slag was used to prepare nitrogen-doped hierarchical porous carbon.•High specific surface area, large pore volume and hierarchical pores were obtained.•Bisphenol A, 2,4-dichlorophenol and methylene blue could be effectively adsorbed.•The isotherm, thermodynamics...

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Bibliographic Details
Published in:Bioresource technology 2019-12, Vol.294, p.122149-122149, Article 122149
Main Authors: Cheng, Jian, Gu, Jiang-Jiang, Tao, Wei, Wang, Ping, Liu, Lian, Wang, Cao-Yu, Li, Yong-Ke, Feng, Xiong-Han, Qiu, Guo-Hong, Cao, Fei-Fei
Format: Article
Language:English
Subjects:
Adsorption
Bisphenol A
Edible fungus slag
Nitrogen-doped hierarchical porous carbon
Organic contaminants
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Summary:[Display omitted] •The edible fungus slag was used to prepare nitrogen-doped hierarchical porous carbon.•High specific surface area, large pore volume and hierarchical pores were obtained.•Bisphenol A, 2,4-dichlorophenol and methylene blue could be effectively adsorbed.•The isotherm, thermodynamics and kinetics for bisphenol A adsorption were studied. In this work, agricultural waste edible fungus slag derived nitrogen-doped hierarchical porous carbon (EFS-NPC) was prepared by a simple carbonization and activation process. Owing to the biodegradation and infiltrability of hyphae, this EFS-NPC possessed an ultra-high specific surface area (3342 m2/g), large pore volume (1.84 cm3/g) and abundant micropores and mesopores. The obtained EFS-NPC could effectively adsorb bisphenol A (BPA) with the maximal adsorption capacity of 1249 mg/g and the removal process reached 89.9% of the equilibrium uptake in the first 0.5 h. Besides, the EFS-NPC showed much better removal performance towards 2,4-dichlorophenol (2,4-DCP) and methylene blue (MB) than commercial activated carbons (Norit RO 0.8 and DARCO granular activated carbon). Furthermore, adsorption isotherms, thermodynamics and kinetics researches indicated that the adsorption process of BPA was monolayer, exothermic and spontaneous. This research has given evidence that the low-cost EFS-NPC can serve as a high-efficient adsorbent for removing organic contaminants from water.
ISSN:0960-8524
1873-2976
DOI:10.1016/j.biortech.2019.122149