Suiling Wang

TL;DR: An analysis of the currently available information on recognized problem areas, and an overview of current knowledge of the principal hydrogeochemical processes of arsenic transportation and transformation are provided, however, a more detailed understanding of local sources of arsenic and mechanisms of arsenic release is required.

TL;DR: This review paper summarizes existing information regarding the effects of natural organic matter (NOM) on the fate and mobility of As species in the environment and development of proper geochemical conceptual models may provide means of predicting the role of NOM in arsenic leaching and/or immobilization.

TL;DR: Natural attenuation of As-contaminated soils and groundwater may be a cost-effective in situ remedial option that relies on the site intrinsic assimilative capacity and allows in-place cleanup, but is subject to hydrological changes and may take substantial periods of time, thus requiring long-term monitoring.

TL;DR: This paper gives a comprehensive overview and evaluation of an emerging promising alternative, surfactant foam technology, designed either to remove contaminants or to simultaneously act as an augmentation for the existing technologies such as pump-and-treat systems and bioremediation processes to improve the contaminant removal efficiency and cost effectiveness.

TL;DR: In this paper, a study was conducted in three steps: evaluation of the foam characteristics, investigation of pressure buildup by foam injection and the removal of metals by the foam, which was shown to vary between 90% and 99% with stabilities from 17 to 41 min.