| Issue |
E3S Web Conf.
Volume 630, 2025
2025 International Conference on Eco-environmental Protection, Environmental Monitoring and Remediation (EPEMR 2025)
|
|
|---|---|---|
| Article Number | 01007 | |
| Number of page(s) | 4 | |
| Section | Smart Technologies for Environmental Monitoring and Pollution Mitigation | |
| DOI | https://doi.org/10.1051/e3sconf/202563001007 | |
| Published online | 22 May 2025 | |
Study on photodegradation of typical new brominated flame retardants on soil minerals and actual soil
Sanya Oceanographic Institution, Ocean University of China, Sanya 572000, China
The photodegradation process of hexabromobenzene (HBB) adsorbed on four soil minerals and actual soil was studied under simulated sunlight irradiation. The results showed that the photodegradation of HBB on all soils was in accordance with the pseudo-first-order kinetic process. In different soil types, the order of photodegradation rate from fast to slow was silica gel (simulated soil mineral system) > montmorillonite > kaolinite > Sanya soil > quartz sand > Haikou soil. The higher the thickness of soil laying, the lower the photodegradation efficiency of HBB. The photodegradation rate in the system with humic acid (HA) decreased significantly, and the higher the HA concentration, the more obvious the inhibition effect. The photodegradation products of HBB were identified by GC-MS, mainly the formation of debromination products, and the degradation pathway was reduction debromination.
© The Authors, published by EDP Sciences, 2025
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