N-doped graphite encapsulated metal nanoparticles catalyst for removal of Bisphenol A via activation of peroxymonosulfate: A singlet oxygen-dominated oxidation process

2021 ◽  
Vol 415 ◽  
pp. 128890
Author(s):  
Junjie You ◽  
Chengyang Zhang ◽  
Zelin Wu ◽  
Zhimin Ao ◽  
Weiyi Sun ◽  
...  
Keyword(s):  
Bisphenol A ◽  
Singlet Oxygen ◽  
Metal Nanoparticles ◽  
Oxidation Process

Singlet oxygen-dominated non-radical oxidation process for efficient degradation of bisphenol A under high salinity condition

2019 ◽  
Vol 148 ◽  
pp. 416-424 ◽  
Author(s):  
Rui Luo ◽  
Miaoqing Li ◽  
Chaohai Wang ◽  
Ming Zhang ◽  
Muhammad Abdul Nasir Khan ◽  
...  
Keyword(s):  
Bisphenol A ◽  
Singlet Oxygen ◽  
High Salinity ◽  
Oxidation Process ◽  
Radical Oxidation ◽  
Salinity Condition

scholarly journals The simultaneous removal of bisphenol A, manganese and ammonium from groundwater by MeOx: The role of chemical catalytic oxidation for bisphenol A

2021 ◽  
Author(s):  
Yingming Guo ◽  
Ben Ma ◽  
Jianxiong Huang ◽  
Jing Yang ◽  
Ruifeng Zhang
Keyword(s):  
Oxide Film ◽  
Bisphenol A ◽  
Dissolved Oxygen ◽  
Oxidation Process ◽  
Pilot Scale ◽  
Simultaneous Removal ◽  
Chemical Forms ◽  
Synergy Effect ◽  
Iron And Manganese

Abstract The iron and manganese oxide filter film (MeOx) were used to research the simultaneous removal of bisphenol A (BPA), manganese (Mn2+) and ammonium (NH4+) in a pilot-scale filter system. We found that 0.52 mg/L of BPA could be removed while consuming 5.44 mg/L of dissolved oxygen (DO). Since the oxidation process of NH4+ and BPA both consume the DO in water, the presence of NH4+ can hinder the removal of BPA. The presence of Mn2+ in water had a synergy effect on the BPA removal. The filter film was characterized by SEM, XRD and XPS. Some substances were generated to block the pores of the oxide film, and a small amount of film was found to crack and fall off. The elemental composition of C and O were both increased by about 9%, the composition of Mn was decreased from 63.48% to 44.55%, and the reduced manganese substance might affect the activity of the oxide film. The main chemical forms of MeOx are Mn6O12·3H2O, MnFe2O4 or Mn3O4. The decrease in the removal efficiency of BPA was mainly due to the C-containing intermediate [−CH2C − H(OH)]n covering the surface of the oxide film and blocking the pore size of the film.

A unique Si-doped carbon nanocatalyst for peroxymonosulfate (PMS) activation: insights into the singlet oxygen generation mechanism and the abnormal salt effect

2020 ◽  
Vol 7 (10) ◽  
pp. 2982-2994
Author(s):  
Weijian Duan ◽  
Jinglei He ◽  
Ziliang Wei ◽  
Zongren Dai ◽  
Chunhua Feng
Keyword(s):  
Singlet Oxygen ◽  
Advanced Oxidation Process ◽  
Oxidation Process ◽  
Salt Effect ◽  
Advanced Oxidation ◽  
Generation Mechanism ◽  
Radical Oxidation ◽  
Oxygen Generation ◽  
Singlet Oxygen Generation ◽  
Si Doped

The Si-engaged, carbon-activated peroxymonosulfate (PMS) system proceeding via the non-radical oxidation pathway involving singlet oxygen (1O2) represents a promising advanced oxidation process.

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