Containment of organic leachates from leaking underground storage tanks using tailored soils as liners

Conference · Sun Jan 01 04:00:00 EST 1989

OSTI ID:6033936

Peters, R W; Cadena, F; Page, M W

The technical feasibility of using tailored soils for containment of hazardous organic pollutants has been demonstrated. The adsorptive properties of soils for benzene are dramatically improved using organophilic coatings. Tailoring of the soils results in a highly selective adsorbent, which have a great capacity to remove benzene, toluene, and xylene (BTX) compounds. All four soils studied showed significant adsorptive capacity improvement after tailoring with tetramethylammonium ions (TMA/sup +/). The optimum TMA/sup +/:CEC (cation exchange capacity) ratio was between 0.6 and 1.5. Soils tailored at TMA/sup +/ doses as low as 50% of the CEC of the soil removed significant amounts of benzene from solution. pH plays a secondary role in the adsorption of benzene on the tailored soils. The capacities for benzene removal under dynamic column conditions were about 40--75% lower than those predicted from batch adsorption studies. The holdup of benzene increases with increasing clay content of the soils. The breakthrough curves for the pollutant movement through the soil columns can be predicted using conventional one-dimensional solute transport models. 28 refs., 10 figs., 4 tabs.

• Research Organization: Argonne National Lab., IL (USA)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 6033936
• Report Number(s): CONF-8905162-1; ON: DE89013180
• Country of Publication: United States
• Language: English

Related Subjects

510200* -- Environment
Terrestrial-- Chemicals Monitoring & Transport-- (-1989)
520200 -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
ALKYLATED AROMATICS
AROMATICS
BENTONITE
BENZENE
CLAYS
CONTAINMENT
DISPERSIONS
ENVIRONMENTAL TRANSPORT
HYDROCARBONS
LEACHATES
LINERS
LIQUID WASTES
MANAGEMENT
MASS TRANSFER
MIXTURES
ONE-DIMENSIONAL CALCULATIONS
ORGANIC COMPOUNDS
RESEARCH PROGRAMS
SOILS
SOLUTIONS
SORPTIVE PROPERTIES
STORAGE
SURFACE PROPERTIES
TOLUENE
WASTE MANAGEMENT
WASTE STORAGE
WASTES
XYLENES