Advertisement

Topics

Degradation of PCE, TCE and 1,1,1-TCA by nanosized FePd bimetallic particles under various experimental conditions.

Summary of "Degradation of PCE, TCE and 1,1,1-TCA by nanosized FePd bimetallic particles under various experimental conditions."

The degradation of chlorinated organic compounds, such as PCE (tetrachloroethene), TCE (trichloroethene) and 1,1,1-TCA (1,1,1-trichloroethane), was conducted using nanosized FePd bimetallic particles. In order to enhance the reactivity of ZVI (zero valent iron) nanoparticles, surface modification of ZVI nanoparticles was performed using Pd and CMC (carboxymethyl cellulose). The surface modification was found to form CMC-stabilized FePd bimetallic nanoparticles (CMC-FePd). The average TCE removal efficiency by the CMC-FePd was significantly increased by approximately 85% compared to employing conventional ZVI nanoparticles ( approximately 15%). This increase in the TCE removal efficiency was most likely due to the increased amount of atomic hydrogen produced by the formation of CMC-FePd. For PCE and 1,1,1-TCA, the removal efficiencies by CMC-FePd were approximately 80% and 56%, respectively. For all three chlorinated organic compounds, the amount of Cl(-) ions in the aqueous phase during the degradation increased with increasing reaction time. This result suggests that the main degradation mechanism of the chlorinated compounds by CMC-FePd was reductive dechlorination.

Affiliation

Department of Environmental Engineering, Kwangwoon University, 447-1 Wolgye-Dong, Nowon-Gu, Seoul 139-701, South Korea.

Journal Details

This article was published in the following journal.

Name: Chemosphere
ISSN: 1879-1298
Pages:

Links

DeepDyve research library

PubMed Articles [12264 Associated PubMed Articles listed on BioPortfolio]

Strain-Induced Segregation in Bimetallic Multiply Twinned Particles.

We analyze the possibility of strain-induced segregation in bimetallic multiply twinned particles by an analytic first-order expansion within a continuum model. The results indicate that while the cha...

Characterisation of nanoplastics during the degradation of polystyrene.

The release of plastics into the environment has been identified as an important issue for some time. Recent publications have suggested that the degradation of plastic materials will result in the re...

In vitro degradation of biodegradable polylactic acid/magnesium composites: relevance of Mg particle shape.

Absorbable medical devices must be developed in order to have an appropriate degradation rate in agreement with the healing rate of bone in the implantation site. In this work, biodegradable composite...

Debromination of polybrominated diphenyl ethers by attapulgite-supported Fe/Ni bimetallic nanoparticles: Influencing factors, kinetics and mechanism.

To enhance the removal efficiency of 2,2',4,4'-tetrabromodiphenylether (BDE47) in aqueous solutions, novel attapulgite-supported Fe/Ni bimetallic nanoparticles (A-Fe/Ni), which were characterized by a...

Shape-Persistent Replica Synthesis of Gold/Silver Bimetallic Nanoplates Using Tailored Silica Cages.

Shape-persistent replica synthesis of Au/Ag bimetallic nanoplates is invented. Using a tailored silica cage as a template for the synthesis, a successful shape-replication of Au/Ag bimetallic nanoplat...

Clinical Trials [1155 Associated Clinical Trials listed on BioPortfolio]

Does Extra-Fine Hydrofluoroalkane-Beclomethasone Dipropionate (HFA-BDP) Suppress Small Airways Inflammation in Chronic Obstructive Pulmonary Disease (COPD)?

Chronic obstructive pulmonary disease or 'COPD' is a chronic disease, which means that it cannot be cured, but that inhalers and tablets can be used to control the symptoms. In COPD, the a...

Diesel Exhaust Particles and Leukotriene Production

The purpose of this study is to measure the effects of allergens and/or diesel exhaust particles in the nose to learn more about allergic responses in individuals with cat allergic rhiniti...

Bioequivalence Study of Dr. Reddy's Divalproex Sodium Coated Particles in Capsules, 125 mg, Under Fed Condition

An open label, balanced, randomized, two-treatment, two-period, two-sequence, single dose, crossover, bioequivalence study of Divalproex Sodium coated particles in capsules 125 mg with Dep...

A Study Evaluating the Effect of Esomeprazole on SYN-004 Degradation of Ceftriaxone In Adults With an Ileostomy

A Phase 1b/2a, Multi-Center, Open-Label, 2-Period, Fixed-Sequence Study Evaluating the Effect of Esomeprazole on SYN-004 Degradation of Ceftriaxone In Healthy Adult Subjects with a Functio...

Study to Explore the Effects of Two Hour Inhalation of Ultrafine Carbon Black Particles on Airway Inflammation in Asthmatics

The aim of the study is to test the hypothesis that the allergic airway inflammation in asthmatic patients will be enhanced after exposure to ultrafine particles (UFP). In order to test th...

Medical and Biotech [MESH] Definitions

The interactions of particles responsible for their scattering and transformations (decays and reactions). Because of interactions, an isolated particle may decay into other particles. Two particles passing near each other may transform, perhaps into the same particles but with changed momenta (elastic scattering) or into other particles (inelastic scattering). Interactions fall into three groups: strong, electromagnetic, and weak. (From McGraw-Hill Encyclopedia of Science & Technology, 7th ed)

Round, granular, mononuclear phagocytes found in the alveoli of the lungs. They ingest small inhaled particles resulting in degradation and presentation of the antigen to immunocompetent cells.

Experimental animal models for human AUTOIMMUNE DISEASES OF THE NERVOUS SYSTEM. They include GUILLAIN-BARRE SYNDROME (see NEURITIS, AUTOIMMUNE, EXPERIMENTAL); MYASTHENIA GRAVIS (see MYASTHENIA GRAVIS, AUTOIMMUNE, EXPERIMENTAL); and MULTIPLE SCLEROSIS (see ENCEPHALOMYELITIS, AUTOIMMUNE, EXPERIMENTAL).

Groups that serve as a standard for comparison in experimental studies. They are similar in relevant characteristics to the experimental group but do not receive the experimental intervention.

Three, alpha, beta, and gamma isomers of ultraviolet degradation products of colchicine that lack many of the physiological actions of the parent; used as experimental control for colchicine actions.

Quick Search
Advertisement
 


DeepDyve research library

Searches Linking to this Article