Glucocorticoids (GCs) have drawn great concern due to widespread contamination in the environment and application treating COVID-19. This work aimed compare performance of UVA/chlorination ozonation on GC removal terms efficiency, degradation pathway, toxicity change, with fluocinolone acetonide (FA), triamcinolone (TA), clobetasol propionate (CP) as target compounds. The results showed that bo...

The effects of groundwater table fluctuation (GTF) on the remediation a petrochemically polluted riverside using soil vapor extraction (SVE) were investigated. migration and transformation benzene, toluene, ethylbenzene, o-xylene (BTEX) in cases natural attenuation, SVE without GTF, with GTF simulated TMVOC model. results showed that optimized well pressure influencing radius target site 0.90 a...

Tar removal from gasification gases is a determinant step to guarantee the operational feasibility of gasification-to-chemicals/energy systems. However, this very complex process requiring catalytic materials proceed under reasonably low temperatures and convert tars into fuel (i.e., CHx). The use Fe-based catalysts for application has been reported before, however, there are still unsolved que...

In this 10 year study, Brazilian gasoline (100 L, containing 24% ethanol by volume) was released to a sandy aquifer to evaluate the natural attenuation of benzene, toluene, ethylbenzene, and total xylenes (BTEX) in the presence of ethanol. Groundwater concentrations of BTEX, ethanol, and degradation products (e.g., acetate and methane) were measured over the entire plume using an array of monit...

Laboratory scale experiments and field studies were performed to evaluate the feasibility of biofilters for sequential removal of H2S and VOCs from wastewater treatment plant waste air. The biofilter was designed for spatially separated removal of pollutants in order to mitigate effects of acid production resulting from H2S oxidation. The inlet section of the upflow units was designated for H2S...

The performance of a date palm tree bark-based biofilter inoculated with mixed microbial consortia was investigated for the removal of a benzeneethylbenzene-xylene mixture at a total inlet loading rate range of 38.0 to 612.0 g/m·h. The influences of the inlet pollutant concentration and air flow rate were studied. The maximum elimination capacities attained for benzene, ethylbenzene, and toluen...

Currently, air pollution is being exacerbated by rapid social, economic, and industrial development. Major pollutants include volatile organic compounds (VOCs) CO. Photocatalytic thermocatalytic technology can be used to convert VOCs CO into harmless gases effectively. Recently, photothermal synergistic catalysis has aroused much attention because of its higher performance than those individual...