NDLI: Development and characterization of microwave-assisted activated carbons from Parkinsonea aculeata wood

Content Provider	Springer Nature Link
Author	Nunell, G. V. Fernandez, M. E. Bonelli, P. R. Cukierman, A. L.
Copyright Year	2016
Abstract	Activated carbons from invasive Parkinsonia aculeata wood sawdust were developed by microwave assisted H3PO4 acid activation varying the radiation time (2–10 min). Their main physicochemical characteristics were determined, and compared with those of a sample previously obtained by conventional heating using the same precursor, chemical agent, and impregnation ratio. The activated carbons developed for radiation times of 5 and 10 min showed higher BET surface areas (~1300 m2/g) and total pore volume (1 cm3/g) than those obtained at 2 min (~710 m2/g) or by conventional heating (~970 m2/g). Microwave assisted activation also led to activated carbons with higher total amounts of acidic oxygen and basic functionalities in comparison with the sample arising from conventional heating. Phenol adsorption capacity for all the samples was also evaluated from determination of the adsorption isotherms and their proper description by the Freundlich model. The adsorption capacity for the activated carbons obtained at 5 and 10 min was almost twice that measured for the samples prepared at 2 min and by conventional heating, in agreement with the higher BET surface areas characterizing the former. Compared with conventional heating, the process assistance by microwave energy not only reduced operation time, but also improved the characteristics of the resulting activated carbons.
Starting Page	347
Ending Page	356
Page Count	10
File Format	PDF
ISSN	09295607
Journal	Adsorption
Volume Number	22
Issue Number	3
e-ISSN	15728757
Language	English
Publisher	Springer US
Publisher Date	2016-02-26
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Activated carbon Microwave assistance H3PO4 acid activation Phenol adsorption Industrial Chemistry/Chemical Engineering Surfaces and Interfaces, Thin Films Engineering Thermodynamics, Heat and Mass Transfer
Content Type	Text
Resource Type	Article
Subject	Chemistry Chemical Engineering Surfaces and Interfaces

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