2,812 Results Found

Rainwater needs to be recognized as a natural water source for domestic use, but finding viable processes to remove its contaminants is essential. The aim of this work was to compare the UV/H₂O₂ and UV/Fenton-like processes for the oxidation of 3,5-d...

Extensive research has been carried out to figure out safe means of disposing various industrial effluents. Industrial wastewaters from the aeration industry such as heavy metals and oily substances contain a high degree of contamination. The advance...

Sulfamethoxazole (SMZ), sulfathiazole (STZ) and sulfamethazine (SMT) are typical sulfonamides, which are widespread in aqueous environments and have aroused great concern in recent years. In this study, the photochemical oxidation of SMZ, STZ and SMT...

Environmental problems caused by UV filters, a group of emerging contaminants, have attracted much attention. The removal of two typical UV filters benzophenone (BP) and 4,4′-dihydroxy-benzophenone (HBP) in water was investigated by the UV/H₂O₂...

This study presents an efficient way to degrade methylene blue (MB) present in water via photodegradation using H₂O₂ as an oxidant in the presence of UV irradiation and without the use of a catalyst. The reaction variables, employed to evaluate the p...

The high molecular weight and poor solubility of seaweed polysaccharides have limited their function and application. In this study, ultraviolet/hydrogen peroxide (UV/H₂O₂) treatment was used to prepare low-molecular-weight seaweed polysaccharides fr...

The illegal use and low biodegradability of psychoactive substances has led to their introduction to the natural water environment, causing potential harm to ecosystems and human health. This paper compared the reaction kinetics and degradation mecha...

This study aimed to investigate the effect of H₂O₂ addition, ozone feed rate, and UV addition on the change in the concentration of organics such as COD_Mn, COD_Cr, TOC, and PFCs in tertiary-treated effluent from a sewage treatment plant (STP) during t...

UV/H₂O₂, which is an advanced treatment technology used to reduce multiple contaminants, is effective in potable water treatment. Simultaneous degradation effects and kinetics of three types of coexisting micropollutant estrogens (steroid estrogens,...

In wastewater treatment, reverse osmosis (RO) technology is gaining significance. However, antiscalants in RO systems harm the environment by hindering hardness removal and causing phosphorus pollution in receiving waters. This research employed the...

The main purpose of this study was to analyze the structural properties and anti-inflammatory activity of the purified fractions derived from UV/H₂O₂-degraded polysaccharides from Sargassum fusiforme. Results indicated that twofractions with differen...

This study investigated the removal of methylene blue (MB) by different UV, UV-catalyzed H₂O₂ (UV/H₂O₂) and UV-and-iron-catalyzed H₂O₂ (UV/H₂O₂/Fe²⁺)-based advanced oxidation processes. At pH 6.0, the removal of MB (15 mg/L) was found to be 6.31% at...

Fumonisins are secondary metabolites of mold whose presence has been proven in water. Since fumonisin B₁ (FB₁) is highly toxic and has dangerous effects on the health of living organisms, in this study, the influence of various water matrices on the...

UV chemical degradation is a low-cost and sustainable wastewater treatment technology that protects the environment. In this study, computational fluid dynamics (CFD), mass transfer, and photochemical kinetic models combined with the continuous flow...

Effluent of a municipal wastewater treatment plant (WWTP) was treated on-site with the UV/chlorine (UV/HOCl) advanced oxidation process (AOP) using a pilot plant equipped with a medium pressure UV lamp with an adjustable performance of up to 1 kW. Re...

Olive tree pruning (OTP), a widely available agricultural residue in Mediterranean countries, represents a promising lignocellulosic feedstock for anaerobic digestion. However, its recalcitrant structure limits its biodegradability and methane yields...

This study researches the impact of diclofenac (DCF) oxidation via UV/H₂O₂ on water quality, focusing on aromaticity and color changes. The process effectively degrades DCF and its intermediates through hydroxyl radical attack on the aromatic structu...

Halogenated disinfection by-products such as 2,6-dichlorobenzoquinone (DCBQ) are emerging microcontaminants of concern due to their persistence and toxicity in aquatic environments. This study evaluated the oxidative degradation of DCBQ under UV irra...

The inevitable ubiquity of natural organic matter (NOM) in all waters presents a challenge to the proper functioning of water treatment processes. Therefore, minimizing NOM in raw water is crucial to avoid operational issues in subsequent treatment s...

Implementing efficient and cost-effective wastewater treatment methods in wastewater treatment plants (WWTPs) is crucial for ensuring sustainable development in contemporary societies. This study explores the feasibility of a continuous UV/${\mathrm{H}}_2{\mathrm{O}}_2$ tubul...

Advanced oxidation processes (AOPs) have emerged as a promising approach for the removal of organic dyes from effluents. Different AOPs were employed for the degradation of Reactive Yellow 160A (RY-160A) dye, i.e., SnO₂/UV/H₂O₂ and TiO₂/UV/H₂O₂. In t...

In the present study, a novel graft modified flocculant CTS-g-PAMD was synthesized and applied to conduct sludge conditioning and dewatering. CTS-g-PAMD was copolymerized with AM, DMC and chitosan (CTS) under UV-H₂O₂ initiation. In addition, the effe...

The removal of four representative pharmaceuticals—sulfamethoxazole (SMX), carbamazepine (CBZ), diclofenac (DCF) and ibuprofen (IBU)—was investigated in a model aqueous solution using UV-C photolysis, ozonation and a hybrid UV/O₃ process....

The degradation rates of formic acid and lactic acid in the presence and absence of H₂O₂ were studied, utilizing several TiO₂ catalysts: PC105 (100% anatase), MPT 625 (100% rutile), and P25 (80% anatase/20% rutile), and the results were discussed wit...

Ethylene glycol (EG) is a contaminant in the wastewater of airports because it is commonly used in aircraft deicing fluids during the cold season in northern regions. Ethylene glycol by itself has relatively low toxicity to mammals and aquatic organi...

UV/H₂O₂ process and TiO₂-based photocatalysis were studied in the present work. The effectiveness of these methods was tested in the treatment of effluents taken from handicraft factories. Microorganisms, dyes, and different organic pollutants were d...

As a green advanced process for drinking water treatment, the UV/hydrogen peroxide (UV/H₂O₂) process has been gradually applied in China. To study the effect and mechanism of organic matter removal and the development of microbial communities in the...

The hepatotoxin microcystin-LR (MC-LR) represents one of the most toxic cyanotoxins for human health. Considering its harmful effect, the World Health Organization recommended a limit in drinking water (DW) of 1 µg L⁻¹. Due to the ineffec...

Advanced oxidation technology represented by hydroxyl radicals has great potential to remove residual antibiotics. In this study, we systematically compared the metronidazole (MTZ) degradation behavior and mechanism in the UV and UV/H₂O₂ systems at p...

This experiment investigated the degradation of amoxicillin in water using hydrogen peroxide (H₂O₂) and UV Irradiation. The parameters analyzed included the initial concentration of amoxicillin, the pH of the solution, and the quantity of H₂O₂ used....

Ionic liquids (ILs) are considered to be a new type of solvent due to their low vapor pressure, some unique properties and are expected to be used widely in the following days. Given their water solubility, stable chemical structure, and biological t...

Intensive agriculture has led to the increasing application of pesticides, such as malathion, thus generating large volumes of untreated cropland wastewater (CropWW). In this work, a hybrid system constructed wetlands (CW) coupled in continuous with...

The robust structure of algal cell walls presents a major barrier in the recovery of fermentable sugars and intracellular lipids for biofuel production. This study investigates the effectiveness of ultraviolet (UV) radiation and UV-assisted hydrogen...

This study utilizes a natural air diffusion cathode (ADC) and an ultraviolet lamp to construct a UV/H₂O₂ reactor for the in situ synthesis and activation of H₂O₂ and evaluates its potential application in practical lake water treatment. The results i...

Sulfolane is an emerging contaminant in the groundwater and soil nearby gas plants, which has attracted much attention from many researchers and regulatory agencies in the past ten years. In this paper, a field pilot-scale ultraviolet (UV)/hydrogen p...

Cyanobacteria, particularly Microcystis aeruginosa, can form dense blooms that impair water quality, and conventional treatment methods often fail to remove them effectively. This study evaluated the impact of cell age on the performance of the UV/H₂...

A treatment process was developed for effluents from direct physical lithium-ion battery (LIB) recycling with a focus on the removal of organic contaminants. The high chemical oxygen demand to biological oxygen demand ratio (COD/BOD₅) of 3.9–4.6 indi...

The applications of fucoidan in the food industry were limited due to its high molecular weight and low solubility. Moderate degradation was required to depolymerize fucoidan. A few studies have reported that fucoidan has potential antibacterial acti...

The photodegradation of azithromycin present was carried out in water using H₂O₂ under UV irradiation. The reaction variables considered in this study were the amount of H₂O₂ solution and the initial concentration of azithromycin to evaluate the perf...

Azo dye wastewater belongs to the highly concentrated organic wastewater, which is difficult to be treated by traditional biological processes. The oxidation efficiency of a single physicochemical method is not considerable. Recent research indicated...

In this work, a UV/H₂O₂ system in real tannery wastewater was evaluated by an experimental design with optimal stage 2-level I-optimal reaction surface using Design Expert software to analyze the effects of temperature, pH, UV lamp power (W), and H₂O...

In this study, nanoparticles of five photocatalytic systems based on pure zinc oxide and with rare earths ions M-ZnO (M = La³⁺, Ce³⁺, Pr³⁺ or Nd³⁺) calcined at 500 °C or 700 °C were synthesized and investigated as potential photocatalysts for the rem...

Hydroxyl radical (•OH) scavenging demand can be an indicator that represents the water quality characteristics of raw water. It is one of the key parameters predicting UV/H₂O₂ system performance and affects the operating parameters. Based on the...

Two-stage reverse osmosis (RO) processes with intermediate concentrate demineralization (ICD) provide an efficient strategy to treat brines with high CaSO₄ contents and reduce concentrate discharge. In this paper, an SRO concentrate is treated using...

Microplastics are an emerging class of recalcitrant organic pollutants that are of general scientific and public interest nowadays. It would be ideal to remove microplastics from the environment through biodegradation, as biodegradation is a highly e...

Calcium-chelated polysaccharides have been increasingly considered as promising calcium supplements. In this study, degraded fucoidans (DFs) with different molecular weights (Mws) were prepared after UV/H₂O₂ treatment; their calcium-chelating capacit...

Tannic acid (TA) is a major pollutant present in the wastewater generated from vegetable tanneries process and food processing. This work studied TA degradation by two advanced oxidation processes (APOs): UV irradiation at the wavelength of 254 nm in...

The organic material from cyanobacteria is a significant precursor to the generation of disinfection byproducts. This study’s aim was to evaluate the formation of assimilable organic carbon (AOC) in water contaminated with cyanobacteria. Furthe...

Advanced technologies, such as reverse osmosis (RO), allow the reuse of treated wastewater for direct or indirect potable use. However, even highly efficient RO systems produce ~10–15% highly contaminated concentrate as a byproduct. This wastew...

Photocatalytic hydrogen production via water splitting using a noble metal on a TiO₂ is a technology that has developed rapidly over the past few years. Specifically, palladium doped TiO₂ irradiated with near-UV or alternatively with visible light ha...