Transformation of bromide and formation of brominated disinfection byproducts in peracetic acid oxidation of phenol

Selective Transformation of Micropollutants in Saline Wastewater by Peracetic Acid: The Overlooked Brominating Agents

“…9,17 In addition, the generated hypohalous acids could subsequently react with dissolved organic matter to form halogenated DBPs in saline waters. 9,14,16 Generally, hypohalous acids were considered to be primary reactive species in pollutant abatement and halogenated DBP formation. 9,14 However, several recent works have discovered that other chlorine species, such as dichlorine monoxide (Cl 2 O) and molecular chlorine (Cl 2 ), also exist in free available chlorine (FAC) solution.…”

“…Chemical disinfectants and oxidants (e.g., chlorine and ozone) have been extensively employed for removing inorganic and organic micropollutants in ballast water and wastewater treatment. − Recently, peracetic acid [PAA, CH 3 C­(O)­OOH] has emerged as a promising alternative to traditional disinfectants due to low ecotoxicity and limited disinfection byproduct (DBP) formation. − Hence, PAA was used as the chemical disinfectant to treat saline water (e.g., ballast water on oceangoing board ships). , The saline wastewater is characterized by a high concentration of soluble salts and refractory organic compounds, which severely hinder biological treatment. , Halide ions (i.e., bromide (Br – ), chloride (Cl – )) are ubiquitous in saline waters and play a critical role in chemical oxidation and disinfection . Several studies have reported the reactions of PAA with halide ions to form hypohalous acid (HOCl and HOBr), which could accelerate pollutant abatement. ,− The second-order rate constant of PAA with Cl – is determined to be 1.47 × 10 –5 M –1 s –1 , which is 6 orders of magnitude lower than that of PAA with Br – (0.24 M –1 s –1 ). , In addition, the generated hypohalous acids could subsequently react with dissolved organic matter to form halogenated DBPs in saline waters. ,, …”

Dynamic Fluorescence Sensing of Bromide Ions by Photochromic Bi(III)‐Coordination Polymers Based on a Ligand Integrated by Naphthalene Diimides and Pyridinium in Solution and Films

“…Bromine wastewater is defined as wastewater containing bromide anions (Br − ), primarily originating from industrial processes in the bromine chemical industry, printing and dyeing, medicine, and other sectors. [1][2][3] It is characterized by a high there has been a surge in research on the main group metals, including indium (In), tin (Sn), and bismuth (Bi). [27][28][29] Bi, in particular, emerges as an intriguing candidate for constructing fluorescence chemosensors owing to its reduced environmental impact and cost advantages in manufacturing.…”

“…Bromine wastewater is defined as wastewater containing bromide anions (Br − ), primarily originating from industrial processes in the bromine chemical industry, printing and dyeing, medicine, and other sectors. [ 1–3 ] It is characterized by a high concentration of bromide ions, which exhibit strong corrosion, high toxicity, and volatility, posing a significant threat to the environment and human health. [ 4–6 ] Therefore, it is crucial to devise materials capable of detecting bromide ion concentrations in wastewater environments.…”