Advertisement

Topics

Fast and efficient removal of As(III) from water by CuFeO with peroxymonosulfate: Effects of oxidation and adsorption.

07:00 EST 27th November 2018 | BioPortfolio

Summary of "Fast and efficient removal of As(III) from water by CuFeO with peroxymonosulfate: Effects of oxidation and adsorption."

Although oxidation of As(III) to As(V) is deemed necessary to promote arsenic removal, the oxidation process usually involves toxic byproducts, well-defined conditions, energy input or sludge generation. Moreover, extra operations are required to remove the resulting As(V). A heterogeneous catalytic process of CuFeO with peroxymonosulfate (PMS) is established for As(III) oxidation and adsorption. The PMS can be activated by CuFeO to generate radical species for As(III) oxidation. The CuFeO/PMS has a stronger affinity for arsenic than CuFeO alone. Oxidation and adsorption promote each other. As a result, the heterogeneous catalytic process is more efficient for As(III) removal than a preoxidation of As(III) followed by adsorption. The adsorption capacity for As on CuFeO/PMS reached up to 63.9 mg/g, which is much higher than that of As(III) (36.9 mg/g) or As(V) (45.4 mg/g) on CuFeO alone. The process can work effectively over a wide range of pH values (3-9) and temperatures (10-40 °C). Coexisting ions such as sulfate, carbonate, silicate and humic acid have an insignificant effect on As(III) removal. The As(III) (1415 μg/L) can be completely oxidized to As(V) and rapidly removed to below 10 μg/L (less than 15 min) using CuFeO(0.2 g/L)/PMS(100 μM). Moreover, the As(III) (50 μg/L) can be completely oxidized and removed within 1 min. The proposed process is easily applicable for the remediation of As(III)-contaminated water under ambient conditions.

Affiliation

Journal Details

This article was published in the following journal.

Name: Water research
ISSN: 1879-2448
Pages: 182-190

Links

DeepDyve research library

PubMed Articles [14062 Associated PubMed Articles listed on BioPortfolio]

A general strategy to fabricate soft magnetic CuFeO@SiO nanofibrous membranes as efficient and recyclable Fenton-like catalysts.

Fenton or Fenton-like technique, as one of the advanced oxidation processes, plays a significant role in the removal of non-easily degradable organic pollutants; however, most of such catalysts are fr...

Unary and binary adsorption studies of lead and malachite green onto a nanomagnetic copper ferrite/drumstick pod biomass composite.

Modern-day practices are the major contributors in water quality deterioration, consequently results in clean water scarcity. Herein, co-precipitation procedure was adopted to develop a nanomagnetic c...

Enhanced degradation of sulfadiazine by novel β-alaninediacetic acid-modified FeO nanocomposite coupled with peroxymonosulfate.

Magnetic nanocomposite β-alaninediacetic acid-modified FeO (β-ADA@FeO) was prepared, characterized and evaluated to activate peroxymonosulfate (PMS) for improved degradation of sulfadiazine (SD). Th...

Highly efficient catalysis of chalcopyrite with surface bonded ferrous species for activation of peroxymonosulfate toward degradation of bisphenol A: A mechanism study.

Chalcopyrite nanoparticles (CuFeS NPs) with abundant surface bonded ferrous were successfully prepared, characterized and used as a catalyst for peroxymonosulfate (PMS) activation and BPA degradation....

Facile and eco-friendly synthesis of functionalized iron nanoparticles for cyanazine removal in water.

Second generation herbicide is applied for broad leaf weeds and yearly grasses in the growing fields of bananas, pineapple, sugarcane - polluting water sources. Cyanazine removal is described on funct...

Clinical Trials [3279 Associated Clinical Trials listed on BioPortfolio]

Removal of Dermal Exposure to Phthalate Ester by Hand Washing

The aim of the study is to evaluate the effectiveness in removing chemical exposure on hand, we compare removal efficiency of Di-(2-ethylhexyl)phthalate (DEHP) on hands by hand washing wit...

Cardiac (CMRI) Assessment of Acromegaly

In this study, the investigators will evaluate the cardiac structure and function, focusing on the myocardial water content and interstitial fibrosis, in patients with active acromegaly in...

Effects of Ozonated Water on Pain, Swelling, Trismus and Quality of Life in Third Molar Surgery

The aim of this study was to evaluate the effect of ozonated water on pain, edema and trismus after third molar removal. Patients were submitted to extraction of lower third molar under ir...

Water Consumption, Hydration and Resting Energy Expenditure

A randomized, cross over study will assess the effects of ingestion of high and low volumes of water on REE over 90 minutes. The high volume of water 500ml and the low volume of water 250m...

A Study to Improve the FAST Ultrasound Exam

This research study aims to improve the standard exam called Focused Assessment with Sonography in Trauma (FAST). The FAST exam is an ultrasound test used to identify an abdominal bleed. T...

Medical and Biotech [MESH] Definitions

Skeletal muscle fibers characterized by their expression of the Type II MYOSIN HEAVY CHAIN isoforms which have high ATPase activity and effect several other functional properties - shortening velocity, power output, rate of tension redevelopment. Several fast types have been identified.

A milky, product excreted from the latex canals of a variety of plant species that contain cauotchouc. Latex is composed of 25-35% caoutchouc, 60-75% water, 2% protein, 2% resin, 1.5% sugar & 1% ash. RUBBER is made by the removal of water from latex.(From Concise Encyclopedia Biochemistry and Molecular Biology, 3rd ed). Hevein proteins are responsible for LATEX HYPERSENSITIVITY. Latexes are used as inert vehicles to carry antibodies or antigens in LATEX FIXATION TESTS.

Enzymes that catalyze the breakage of a carbon-oxygen bond leading to unsaturated products via the removal of water. EC 4.2.1.

An enzyme that, in the course of pyrimidine biosynthesis, catalyzes ring closure by removal of water from N-carbamoylaspartate to yield dihydro-orotic acid. EC 3.5.2.3.

Cell surface proteins that bind amino acids and trigger changes which influence the behavior of cells. Glutamate receptors are the most common receptors for fast excitatory synaptic transmission in the vertebrate central nervous system, and GAMMA-AMINOBUTYRIC ACID and glycine receptors are the most common receptors for fast inhibition.

Advertisement
Quick Search
Advertisement
Advertisement

 


DeepDyve research library

Searches Linking to this Article