Title: Influences of co-existing contaminants on the sorption of 1,2,4-trichlorobenzene by CTMAB-bentonite
Abstract:Based on the properties of organic contaminants, two representative compounds, 1,4-dichlorobenzene (DCB) and aniline, were chosen to study the influences of them on 1,2,4-trichlorobenzene (TCB) sorpti...Based on the properties of organic contaminants, two representative compounds, 1,4-dichlorobenzene (DCB) and aniline, were chosen to study the influences of them on 1,2,4-trichlorobenzene (TCB) sorption by CTMAB-bentonite. Both isotherm and kinetics tests of TCB were conducted using fresh CTMAB-bentonite and CTMAB-bentonite preloaded with the representative compounds. In isotherm tests, the results showed that for both fresh and preloaded CTMAB-bentonites, DCB depressed TCB sorption in the lowest residual solution phase concentration ranges of that target solute investigated, while the suppression effect disappeared in its higher residual solution ranges. Aniline showed the same influence as DCB did on TCB sorption by fresh CTMAB-bentonite in isotherm tests. While, aniline enhanced the sorption capacity of TCB in the whole residual solution ranges of TCB in the preloading system. For fresh CTMAB-bentonite system, when co-contaminants concentrations were changed, aniline and DCB decreased TCB sorption at lower co-contaminants concentrations, whereas at the higher co-contaminants concentrations, the competition effect leveled off for DCB, while the TCB sorption was even enhanced for aniline. In kinetics tests, TCB sorption rate was lowered in all bi-solutes systems, except for CTMAB-bentonite preloaded with aniline, which had no influence on TCB sorption rate at all.Read More
Publication Year: 2006
Publication Date: 2006-01-01
Language: en
Type: article
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Cited By Count: 1
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