The Rapid Small Scale Column Test (RSSCT) was developed to predict the adsorbtion of organic compounds in activated carbon adsorbers. In the RSSCT, a small column, which is loaded with an adsorbent ground to small practicle sizes, is used to simulate the performance of a pilot or full scale system. Due to the similarity of mass transfer processes and hydrodynamic characteristics between the small, pilot and full-scale columns, the breakthrough curves are expected to be similar. Due to its small size, the RSSCT requires a fraction of the time and water volume compared to pilot column testing. Recently the RSSCT has been used successfully in simulating the performance of metal-oxide based arsenic adsorbers. The adsorptive-filtration column was scaled down to mimic the performance of continuous flow, full and pilot scale arsenic treatment systems using the RSSCT approach. This paper investigates the application of the RSSCT method for assessing arsenic removal by unconventional adsorptive media such as waste materials.

Processes in the aquatic environment have been intensively explored in recent years, especially sorption processes. In this study, the sorption behavior of benzothiazole (BT) and 2-methylthiobenzothiazole (MTBT) was investigated, on geosorbents with different contents of organic carbon (OC). For both geosorbents and selected organic compounds, nonlinear isotherms were obtained. BT had the greatest degree of nonlinearity on the geosorbent with a higher content of OC, whereas the greatest degree of nonlinearity for MTBT was obtained on the geosorbent with lower OC content. From a comparison of logKoc for selected concentrations, it can be concluded that the geosorbent with the higher OC content has a higher affinity for the sorption of selected compounds.