Adsorption of Pb2+ by ameliorated alum plasma in water and soil.

ABSTRACT: Four methods, including hot acid treatment, hot alkali treatment, calcination treatment and sulfhydrylation treatment, were applied to activate alum plasma in order to obtain new Pb2+ adsorbents. The corresponding adsorption isotherm satisfies the Langmuir equation, and the maximum adsorption of the alum plasma after hot acid treatment, hot alkali treatment and high-temperature calcination were 18.9, 57.3 and 10.9 mg·g-1, respectively, and in the range of 1.23-6.57 times greater than the adsorption capacity of the original alum plasma. The soil culture experiments indicated that the effective Pb content in the soils treated with hot alkali ameliorated alum plasma was significantly lower (p < 0.05) than those treated with the other three types of alum plasma. For example, if the additive co

SUBMITTER: Li N 

PROVIDER: S-EPMC6347192 | biostudies-literature | 2019

REPOSITORIES: biostudies-literature