Effect of activated carbon surface chemistry on adsorption of phenoxy carboxylic acid herbicides from aqueous solutions

2020 ◽  
Vol 186 ◽  
pp. 450-459
Author(s):  
Krzysztof Kuśmierek ◽  
Arkadiusz Białek ◽  
Andrzej Świątkowski
Keyword(s):  
Activated Carbon ◽  
Carboxylic Acid ◽  
Surface Chemistry ◽  
Aqueous Solutions ◽  
Carbon Surface ◽  
Acid Herbicides

scholarly journals Activated carbon surface chemistry: Changes upon impregnation with Al(III), Fe(III) and Zn(II)-metal oxide catalyst precursors from NO3− aqueous solutions

2019 ◽  
Vol 12 (8) ◽  
pp. 3963-3976 ◽  
Author(s):  
Adrián Barroso-Bogeat ◽  
María Alexandre-Franco ◽  
Carmen Fernández-González ◽  
Vicente Gómez-Serrano
Keyword(s):  
Activated Carbon ◽  
Metal Oxide ◽  
Surface Chemistry ◽  
Aqueous Solutions ◽  
Oxide Catalyst ◽  
Carbon Surface ◽  
Metal Oxide Catalyst

SURFACE MODIFICATIONS OF ACTIVATED CARBON AND ITS IMPACT ON APPLICATION

2019 ◽  
Vol 26 (01) ◽  
pp. 1830006 ◽  
Author(s):  
MATHEUS PEGO ◽  
JANAÍNA CARVALHO ◽  
DAVID GUEDES
Keyword(s):  
Surface Modification ◽  
Activated Carbon ◽  
Surface Chemistry ◽  
Surface Structure ◽  
Adsorption Capacity ◽  
Activated Carbons ◽  
Surface Modifications ◽  
Hazardous Substances ◽  
Carbon Surface ◽  
Corona Treatment

The main and new surface modification methods of activated carbon (AC) and their influence on application (adsorption capacity) were reviewed. Adsorption capacity is an important issue, contributing to hazardous substances environment management. According to literature, it is true that surface chemistry strongly affects adsorption capacity. Surface chemistry can be modified by several methods that lead to different activated carbon properties. Furthermore, adsorbate properties, and their relationships with surface structure, can impact adsorption properties. Surface modifications can be conducted by adding some atoms to the surface structure, making the surface more acidic or basic. Introduction of oxygen and ammonia atoms (chemical modification) are the main processes to make the surface more acidic and basic, respectively, although may bring chemical wastes to environment. Surface modification is done by chemical and physical modifications that lead activated carbons to present different properties. The main and new methods of chemical and physical modifications are compared and presented in this paper. Some new physical methods, like corona treatment, plasma discharge and microwave radiation, can be applied to cause surface modifications. Corona treatment can be a practical and new way to cause surface modification on an activated carbon surface.

Effect of activated carbon surface chemistry on the activity of ZVI/AC catalysts for Fenton-like oxidation of phenol

2015 ◽  
Vol 240 ◽  
pp. 73-79 ◽  
Author(s):  
S.A. Messele ◽  
O.S.G.P. Soares ◽  
J.J.M. Órfão ◽  
C. Bengoa ◽  
F. Stüber ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Surface Chemistry ◽  
Carbon Surface ◽  
Oxidation Of Phenol
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