A critical analysis of sono-hybrid advanced oxidation process of ferrioxalate system for degradation of recalcitrant pollutants

Effects of gas saturation and sparging on sonochemical oxidation activity in open and closed systems, Part I: H2O2 generation

“…During ultrasonic irradiation, acoustic cavitation events occur continuously, and cavitation-induced oxidizing radicals such as OH radicals are generated and consumed to generate H 2 O 2 , as shown in the following reactions [39] , [40] : …”

Electronic Tuning of Active Sites in Bifunctional Covalent Organic Frameworks for Photoassisted CO2 Electrocatalytic Full Reaction

“…in wastewater have caused prominent problems to the ecosystem or human beings and remain as a hot topic. , Among them, nitrophenol-based contaminates are a class of notorious organic compounds with obvious toxicity and hard biodegradability, yet they are continuously used as drugs, synthetic dyes, and pesticides in industry, causing giant damage to human health through erosion of the liver, kidney, central nervous system, and blood system. , For instance, 4-nitrophenol (4-NP) as a common nitrophenol-based contaminant with stable chemical properties and high toxicity, possessing high threat to microorganisms and humans, has facilitated the U.S. Environmental Protection Agency (USEPA) to declare 4-NP as a priority pollutant and limited its permissible concentration range to 1∼20 ppb . Aiming at this target, traditional removal methods, such as adsorption, filtration, microbial degradation, or advanced oxidation process (AOP), , have been studied for phenolic contaminant treatment, yet most of which still face challenges like low selectivity/energy efficiency or toxic byproducts, etc., which will in turn increase the costs and power supply during these processes. In this regard, it would be much desired to seek economy and energy benign treatment methods to rationally remove nitrophenol contaminants like 4-NP from wastewater and maximize resource utilization. , …”

“…5,6 For instance, 4-nitrophenol (4-NP) as a common nitrophenol-based contaminant with stable chemical properties and high toxicity, possessing high threat to microorganisms and humans, has facilitated the U.S. Environmental Protection Agency (USEPA) to declare 4-NP as a priority pollutant and limited its permissible concentration range to 1∼20 ppb. 7 Aiming at this target, traditional removal methods, such as adsorption, 8 filtration, 9 microbial degradation, 10 or advanced oxidation process (AOP), 11,12 have been studied for phenolic contaminant treatment, yet most of which still face challenges like low selectivity/energy efficiency or toxic byproducts, etc., which will in turn increase the costs and power supply during these processes. In this regard, it would be much desired to seek economy and energy benign treatment methods to rationally remove nitrophenol contaminants like 4-NP from wastewater and maximize resource utilization.…”

One-Step Synthesis of Iron and Titanium-Based Compounds Using Black Mineral Sands and Oxalic Acid under Subcritical Water Conditions

“…[27][28][29]. Although ferrous oxalate is less common, it is considered an effective heterogeneous catalyst in advanced oxidation processes for eliminating a series of persistent organic pollutants from wastewaters [30][31][32][33]. It can also be a precursor for the synthesis of other materials such as ferrate (VI), whose ion has a strong oxidizing potential, beneficial for water treatment [34].…”