Home ContactUs 中文 English
main product:Sodium Dodecyl Sulfate
Yourlocation:Home >News> sodium dodecyl sulfate four kinds of activated carbon adsorption isotherm

sodium dodecyl sulfate four kinds of activated carbon adsorption isotherm

Time:2015/11/4 6:07:58


As shown.
sodium dodecyl sulfate
four kinds of activated carbon on sodium dodecyl sulfate (SDS), the maximum adsorption capacity, as shown in table 2. The figure shows: with sodium dodecyl sulfate (SDS) concentration increased, the quality of the adsorption capacity increased gradually, when its concentration reaches a certain value, tends to saturated adsorption capacity. Comparing four adsorption isotherm and the data in table 3 shows: AC - 4 largest adsorption capacity of SDS, followed by AC - 3, 1, 2. AC - AC -
Comparison of figure 3 and table 2 shows: for AC - 4, 3, 1 AC - AC -, sodium dodecyl sulfate (SDS) and activated carbon adsorption capacity of large, medium pore specific surface area has relevance, shows that large, medium pore specific surface area on the adsorption of SDS; AC - 2 large, medium pore specific surface area is big, but its adsorption capacity of SDS is minimum, therefore, presumably: AC - 2 was limited by its smaller pore specific surface area of the adsorption of SDS. Comparison table 1 and table 2 shows: activated carbon adsorption capacity of SDS with iodine number and methylene blue value increases. Although the SDS of molecular weight and molecular weight of methylene blue (288 and 374 respectively), but the activated carbon of sodium dodecyl sulfate (SDS) adsorption capacity are almost the adsorption capacity of methylene blue 2 times. On the one hand is due to the SDS is easier to enter the big, middle hole, on the other hand that microporous adsorption played a role of SDS. SDS long chain structure determines during the process of adsorption of sodium dodecyl sulfate (SDS) into the first big, middle hole, when SDS is linear in can enter the pores, despite being the probability of micropore adsorption is very small, but because of the several kinds of activated carbon micropore volume is more than five times the amount of large, medium hole, so the microporous also have certain effect to adsorption. Therefore, activated carbon in sodium dodecyl sulfate (SDS) in the process of adsorption, big, middle hole has played a major role, microporous has played a minor role. The ideal SDS is used to remove the water activated carbon must first have more big, middle hole, secondly should have a certain number of pores; Iodine number and methylene blue value can be used as evaluation of activated carbon on sodium dodecyl sulfate (SDS) index of adsorption capacity.