Photochemical transformation of anthracene (ANT) in surface soil: Chlorination and hydroxylation.

To reveal the fate of anthracene (ANT) in soil, the photodegradation behavior of ANT was systematically studied using SiO to simulate a soil environment. Under xenon lamp irradiation, more than 90% of ANT loaded on SiO could be removed after 240 min. Moreover, the effects of water content, chloride ions (Cl) and humic acid (HA) were examined.

Enhanced removal of ammonia in Fe(VI)/Br oxidation system: Kinetics, transformation mechanism and theoretical calculations.

This work systematically examined the capability of ferrate (Fe(VI)) for ammonia oxidation, revealing for the first time that bromide ions (Br) played an important role in promoting the removal of ammonia in Fe(VI) system. In the presence of 10.0 mM Br, the removal efficiency of ammonia was nearly 3.

Photochemical transformation of hexachlorobenzene (HCB) in solid-water system: Kinetics, mechanism and toxicity evaluation.

As one of the first batch of persistent organic pollutants (POPs) included in Stockholm Convention, hexachlorobenzene (HCB) has attracted great attention because of its wide occurrence and great environmental risks. Considering the easy adsorption of HCB on solids and the complexity of natural particles, we systematically investigated the photodegradation of HCB on the surface of silica gel (SG) in aqueous solution in this work to reveal its fate in natural waters. Under mercury lamp irradiation, more than 90% of HCB loaded on SG could be removed after 240 min.