Arsenite Oxidation by Ultrasound Combined with Ultraviolet in Aqueous Solution

Novel Continuous Column Process for As(III) Oxidation from Concentrated Acidic Solutions with Activated Carbon Catalysis

“…The catalyzed oxidation of arsenic has been attracting increasing attention since the chemical oxidation methods usually require high consumption of strong oxidants and may generate toxic byproducts . Despite that there has been plenty of works on the catalysis of arsenic oxidation, only very few of them deal with high arsenic concentrations and the focus has been limited on the initial stages of complicatedly fabricated catalysts or involves energy-intensive radiation processes. − Some recent research has been focused on the development of novel electrochemical processes for arsenic immobilization , and low-cost carbon-based material such as biochar. , …”

Synthesis of porous γ-Fe2O3 from scorodite synthesized using ultrasound irradiation and evaluation of its battery performance

“…(3) and ( 5)]. [29][30][31][32][33][34][35][36][37] Furthermore, the radicals contribute to the oxidation of the divalent iron in the precursor in the early stages of synthesis, which is considered to be the cause of scorodite's rapid crystal growth.…”

Removal of arsenious acid from sulfuric acidic solution using ultrasound oxidation and goethite

“…The use of ultrasound for the oxidation of As(III) was reported previously. [15][16][17][18][19][20][21] It was found that while ultrasound is effective for the oxidation of As(III) to As(V), Ascontaining solutions gradually become acidic under ultrasound irradiation. This prevents the use of adsorbents that dissolve in the acidic solution, such as ferric hydroxide.…”