Activation of ultrasound enhanced persulfate oxidation by biogenic nanosilvers for degradation of 4-nitroaniline

Recent Developments in Advanced Oxidation Processes for Organics-Polluted Soil Reclamation

“…•− , as shown in Reaction (4). This radical is a stronger oxidant (E 0 = 2.6 V) than the persulfate anion, giving it a great capacity for organic destruction [57,58].…”

Thermal and Radiation Based Catalytic Activation of Persulfate Systems in the Removal of Micropollutants: A Review

“…Optimization of the initial concentration of a pollutant depends on the composition of the pollutant. Pollutant removal efficiency in terms of percentage is inversely proportional to the increase in the initial concentration of the pollutant. , In general, the higher the initial concentration of the pollutant, the more hydroxyl radicals attack, leading to increased degradation rates. , At a low concentration of pollutant, a part of the hydroxyl radical reacts with the pollutant and another part of the hydroxyl radical is combined to form H 2 O 2 . But if we increase the concentration of the initial pollutant, the formation of H 2 O 2 radical could be avoided.…”

“…However, this type of indirect measurement can overestimate the process because persulfate can undergo other pathways leading to formation other than SO 4 •– . On the basis of the following equations, SO 4 •– scavenged by S 2 O 8 •2– will reduce the efficiency of the process when an excess amount of SO 4 •– is present in the system. , Recombination of excess SO 4 •– leads to decrease in the availability of OH • along with low sulfate radical generation; see eqs – …”

A Cu(ii) complex supported on Fe3O4@SiO2 as a magnetic heterogeneous catalyst for the reduction of environmental pollutants

“…[19][20][21][22][23][24][25][26] Nitro compounds are present in wastewater from various industries such as paints, insecticides, pigments, reneries, wood preservatives, etc. [27][28][29][30] In accordance with the U.S. Environmental Protection Agency, aromatic nitro compounds are very toxic in nature and damage humans and other living organisms. [31][32][33] In addition, organic dyes are very dangerous contaminants owing to their various disadvantages such as highly toxic nature, non-biodegradability and carcinogenicity.…”