Development and evaluation of modified whetlerite, an adsorbent material for in situ degradation of sulphur mustard

Kinetics of adsorption of 2-chloroethylethylsulphide on Al2O3 nanoparticles with and without impregnants

“…AP-Al 2 O 3 when was impregnated with MoVPA (V 3 ) [10% (w/w)], surface area decreased from 375 to 318 m 2 /g. This decrease was due to impregnants, which during impregnation travel through the macropores and gets deposited in the mesopores or the pore opening of micropores to cause the blocking of the meso/micropores [8][9][10]. Decrease in surface area after impregnation was found with all samples (Table 1).…”

“…NaOH), it showed a decrease of ∼62% in surface area, whereas the adsorption capacity for 2-CEES adsorption decreased by ∼95%. Decrease in adsorption potential with impregnated systems was because of impregnants, which work as a barrier and resist the movement of adsorbate molecules [8][9][10]. Among impregnated systems AP-Al 2 O 3 + MoVPA (V 3 ) and AP-Al 2 O 3 + NaOH systems showed the highest (574 mg/g) and lowest (88 mg/g) values of equilibration capacity respectively.…”

“…Remarkable contributions have been made by Klabunde and coworkers [5][6][7] for the preparation, characterization and application of nanosize metal oxide particles alone and in association with other oxides. Metal oxide particles alone show promising results against CW agents, but their efficiency can further be increased by loading/impregnating them with those reactive compounds, which have already been proven to be active against toxic agents [8][9][10][11], however, the possibility of new compounds for impregnation also exists. The use of polyoxometalates (POMs) for impregnation of nanosize metal oxides can be explored with confidence as these have already been proven to be useful for the degradation of toxicants [9][10][11][12].…”

Kinetics of adsorption of sulfur mustard on Al2O3 nanoparticles with and without impregnants

“…13 The use of polyoxometalates (POMs) for impregnation of nanosize metal oxides can be explored with confidence as these have already been proven to be useful for the degradation of toxicants. 11,12,14 Recently, efforts have also been made to develop a non-particulate non-woven decontamination substrate, which has been shown to have both absorption and adsorption characteristics for mustard and a few other toxic chemicals. 15 Systems based on impregnated nanoparticles can be used to remove CW agents from solutions or contaminated air.…”

Non-carcinogenic carbon sorbents for respiratory protection

“…They are common in industrial, environmental and some other, special applications. One example of this last type is Cu-Cr-Ag/activated carbon (Whetlerite), used in respiratory protection devices for military purposes [3,4]. It is known that adsorption takes place mainly in the micropores of activated carbon.…”