Role of dissolved oxygen on the adsorptive capacity of activated carbon for synthetic and natural organic matter

Journal Article · Sun Sep 01 00:00:00 EDT 1991 · Environmental Science and Technology; (United States)

DOI:https://doi.org/10.1021/es00021a013· OSTI ID:5469264

Vidic, R D; Suidan, M T ^[1]

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1. Univ. of Cincinnati, OH (United States)

Parameters affecting the adsorptive capacity of granular activated carbon (GAC) for o-cresol, phenol, o-chlorophenol, 3-ethylphenol, trichloroethylene, and natural organic matter are investigated in this study. Experimental results prove that the presence of molecular oxygen significantly increased the adsorptive capacity of GAC for five of these six compounds. The oxic GAC adsorptive capacity for o-cresol, for example, can be up to 2.6-fold the capacity that is attainable under anoxic conditions. Experimental data also prove that there was no biological degradation of these compounds in the presence of oxygen; consequently, biological activity was not responsible for the increased adsorbate removal from the liquid phase. Presumably, the increase in the adsorptive capacity under oxic conditions is due to some polymerization of adsorbate on the surface of the carbon. Naturally occurring organic matter was also adsorbed to a greater extent when molecular oxygen was present in the test environment. However, the adsorptive capacity of GAC for aliphatic organic compounds, such as trichloroethylene, is not significantly influenced by the presence of molecular oxygen.

• OSTI ID: 5469264
• Journal Information: Environmental Science and Technology; (United States), Journal Name: Environmental Science and Technology; (United States) Vol. 25:9; ISSN ESTHA; ISSN 0013-936X
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320305* -- Energy Conservation
Consumption
& Utilization-- Industrial & Agricultural Processes-- Industrial Waste Management
54 ENVIRONMENTAL SCIENCES
540320 -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (1990-)
ACTIVATED CARBON
ADSORBENTS
ADSORPTION
ALKYLATED AROMATICS
AROMATICS
CARBON
CATALYTIC EFFECTS
CHEMICAL REACTIONS
CHLORINATED ALIPHATIC HYDROCARBONS
CHLORINATED AROMATIC HYDROCARBONS
CRESOLS
DATA
DISSOLVED GASES
ELEMENTS
EXPERIMENTAL DATA
FLUIDS
GASES
HALOGENATED ALIPHATIC HYDROCARBONS
HALOGENATED AROMATIC HYDROCARBONS
HYDROXY COMPOUNDS
INFORMATION
MATTER
NONMETALS
NUMERICAL DATA
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
ORGANIC MATTER
OXYGEN
PHENOL
PHENOLS
POLYMERIZATION
SOLUTES
SORPTION
SORPTIVE PROPERTIES
SURFACE PROPERTIES
WATER TREATMENT