Correlation of methyl chloride, methylene chloride, chloroform, and carbon tetrachloride adsorption data on silica gel

Journal Article · Thu Aug 01 04:00:00 EDT 1991 · Separation Science and Technology; (United States)

OSTI ID:6065357

Kuo, Shinglin; Hines, A L; Dural, N H ^[1]

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1. Univ. of Missouri, Columbia (United States)

Of all the indoor air pollutants, methylene chloride and chloroform are considered to be two of the most dangerous. Methyl chloride and carbon tetrachloride are also thought to be responsible for many respiratory diseases even though they are not present in large amounts as compared to the other household chemicals. Adsorption data of the homologous series methyl chloride, methylene chloride, chloroform, and carbon tetrachloride on silica gel were measured gravimetrically at 288, 293, and 298 K. For all the chlorinated hydrocarbons examined, the isotherms were Type 1, showing no apparent hysteresis between the adsorption and desorption cycles. Experimental data were compared with the calculated equilibrium uptake as predicted by a synthetic heterogeneous isotherm model in which the local isotherm on a site is given by the Jovanovic equation and the distribution of energetically different sites is represented by a Morse-type energy distribution function. The absolute errors between the values calculated by the heterogeneous isotherm model and the experimental data ranged from 1.17 to 2.67%. Energy distribution functions showed that silica gel exhibits the same degree of heterogeneity for all of the adsorbates in the homologous series.

• OSTI ID: 6065357
• Journal Information: Separation Science and Technology; (United States), Journal Name: Separation Science and Technology; (United States) Vol. 26:8; ISSN 0149-6395; ISSN SSTED
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
54 ENVIRONMENTAL SCIENCES
540120 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (1990-)
ADSORBENTS
ADSORPTION
ADSORPTION ISOTHERMS
AIR POLLUTION
CARBON TETRACHLORIDE
CHLORINATED ALIPHATIC HYDROCARBONS
CHLOROFORM
COMPARATIVE EVALUATIONS
CORRELATIONS
DATA
DATA ANALYSIS
DESORPTION
EQUILIBRIUM
EVALUATION
EXPERIMENTAL DATA
HALOGENATED ALIPHATIC HYDROCARBONS
HETEROGENEOUS EFFECTS
INDOOR AIR POLLUTION
INFORMATION
ISOTHERMS
METHYL CHLORIDE
METHYLENE CHLORIDE
NUMERICAL DATA
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
POLLUTION
REMOVAL
SILICA GEL
SORPTION
SORPTIVE PROPERTIES
SURFACE PROPERTIES