Degradation of Lindane by persulfate/ferrioxalate/solar light process: Influential operating parameters, kinetic model and by-products

Determination of lindane in surface water samples and its degradation by hydrogen peroxide and persulfate assisted TiO2-based photocatalysis

“…Previously, hydrogen abstraction (removal of hydrogen) and dechlorination reactions of organic compounds by ˙OH and SO 4 ˙ − have been reported. 70 Although hydroxylation reaction by SO 4 ˙ − has also been reported, 71,72 the results of the present study – formation of DCP and CBD in solar/H 2 O 2 /TiO 2 – indicated that hydroxylation reaction is the predominant property ˙OH. Moreover, it can also be concluded that there is relatively lower concentration of ˙OH in solar/PS/TiO 2 (produced via reaction (10)) than in solar/H 2 O 2 /TiO 2 , otherwise DCP and CBD could be produced in solar/PS/TiO 2 .…”

“…These detected DPs were identified in previous studies involving lindane degradation by ˙OH and/or SO 4 ˙ − based AOPs. 52,54,71–73 Interestingly, the results showed that although NOM and inorganic ions, i.e. , NO 3 − , SO 4 2− and Cl − , had reduced the degradation efficiency of lindane, they had not affected the degradation mechanism of lindane.…”

Persulfate-enhanced degradation of propranolol over BiOCl0.5I0.5 under visible light irradiation

“…The phenomenon revealed that the establishment of a solid solution could adjust the absorption edge to a certain degree. The corresponding optical band gap energy 49 may be estimated using Tauc's law: αhν = A ( hν − E g ) 1/ n where α , hν and A are the optical absorption coefficient, photonic energy, and proportionality constant, respectively. n decided by photocatalyst transition type, is equal to 2 (both BiOCl and BiOI are indirect transitions between bands).…”

“…Tianjin Komiou Chemical Reagent Co., Ltd. supplied polyvinylpyrrolidone (PVP) (Tianjin, China). Sodium chloride (NaCl), potassium iodide (KI), ethylene glycol, 49 tert -butanol (TBA), furfuryl alcohol (FFA), methanol (MeOH) and sodium oxalate 50 were acquired from Guangdong Guanghua Sci-Tech Co., Ltd (Guangdong, China). P-Benzoquinone (PBQ) was obtained from Shanghai Aladdin Co., Ltd (Shanghai, China).…”

Modeling and optimization study on degradation of organic contaminants using nZVI activated persulfate based on response surface methodology and artificial neural network: a case study of benzene as the model pollutant

“…Many studies have been carried out in modeling and optimizing the degradation of organic contaminants through activated PS oxidation techniques using kinetic models based on OFAT ( Cabrera-Reina et al, 2020 ; Heidari et al, 2022 ; Conte et al, 2023 ). Other studies focused on modeling and optimizing the pollutant degradation process via activated PS using the combined approach of RSM and ANN ( Zhang et al, 2018 ; Asgari et al, 2020 ; Qiu et al, 2021 ).…”