High-energy irradiation treatment of aqueous solutions of C.I. Reactive Black 5 azo dye: pulse radiolysis experiments

Radiation induced degradation of dyes—An overview

“…In the case of studying the formation and decay of reactive transients under radiolytic conditions, pulse radiolysis technique is generally employed [49]. In this technique, a short pulse of ionizing radiation is used to initiate the primary chemical reactions.…”

“…Reactive Black 5 with short lived e aq − , • OH radical and H atom intermediates of water radiolysis in aqueous solution were investigated by pulse radiolysis with kinetic spectroscopic detection [49]. The e aq − was found to add to the azo group, and adduct radical anion rapidly protonated forming hydrazil radical.…”

Gamma radiation/H2O2 treatment of a nonylphenol ethoxylates: Degradation, cytotoxicity, and mutagenicity evaluation

“…These facts certainly demand the development of an efficient, cost effective, and green technique for the degradation and detoxification of toxic environmental pollutants [21]. The ionizing radiation has been tried for degradation of recalcitrant compounds [22,23] and resultantly, a significant reduction in biochemical oxygen demand (BOD), TOC, COD, and toxicity have been achieved [13,15,[24][25][26][27][28][29][30][31][32][33]. The radiation based AOP are efficient as compared to other treatment methods [16,[34][35][36].…”

Controlled synthesis and characterization of electron rich iron(iii) oxide doped nanoporous activated carbon for the catalytic oxidation of aqueous ortho phenylene diamine

“…9 Thus, advanced oxidation processes (AOPs) have been developed to degrade biorefractory organic compounds in domestic water and industrial effluents. [10][11][12] The widely used AOP processes include a UV photolytic technique, 13 Fenton process, [14][15][16] photo-Fenton process, 17,18 ozonation process, 19 sonolysis, [20][21][22][23] photocatalytic approach [24][25][26][27] and radiation induced degradation, [28][29][30][31] especially for high organic contents, high colour intensity and non-biodegradable contaminants. 32 Amongst several AOPs, the Fenton oxidation process has been one of the most widely used due to its effectiveness to treat Environmental Technology Division, Council of Scientic & Industrial Research (CSIR)-Central Leather Research Institute (CLRI), Adyar, Chennai-600 020, Tamilnadu, India.…”