Remediation of Dicofol Type Ddts-Contaminated Sediments by Ferrous Activated Sodium Persulfate Oxidation

Abstract

In recent years, contamination by dicofol-type DDTs has attracted immense concern as a new source of DDT pollution. In this study, sediment samples from a dicofol manufacturing factory in Tianjing, China exhibited serious DDT contamination [p, − between ferrous ion and DDTs resulted in decreased DDT degradation efficiency and increased persulfate decomposition (represented by the generated amount of sulfate). Our results implied that a slow and steady production of sulfate free radicals is favorable for DDT degradation, and that Fe 2+ availability plays an important role in controlling persulfate reactions activated by ferrous ion. Fe 2+ -activated persulfate oxidation may be significant in developing environment friendly and fast-remediation options for DDT-contaminated sediments and soil. Therefore, this study contributes to current knowledge on remediating DDT contamination.

Study on the Degradation Effect of Tetracycline Using a Co-Catalyst Loaded on Red Mud

“…Persulfate oxidation as a new method for removing refractory organic pollutants has received considerable attention. Peroxydisulfate (PDS) is a commonly used substrate in the catalytic process, which can be activated by activation methods such as heat, alkali [9], ultraviolet radiation [10], and metals to produce various active species. Meanwhile, PDS has high solubility and stability in water, which is advantageous for its application in the treatment of soil and groundwater pollution.…”