Track topics on Twitter Track topics that are important to you
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.
Department of Environmental Engineering, Kwangwoon University, 447-1 Wolgye-Dong, Nowon-Gu, Seoul 139-701, South Korea.
This article was published in the following journal.
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...
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...
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...
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...
Surface segregation is just like an invisible hand in bimetallic electrocatalysts, which has the potential to migrate atoms to the bimetallic nanoparticle surface. On page 3221, Z. J. Xu and co-worker...
Cardiovascular disease (CVD) is the leading cause of death in developed nations and a major health issue in Veterans. Despite a number of different treatments, cardiovascular disease remai...
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...
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...
Nowadays, an increase of inflammatory chronic diseases and/or tumors incidence has been reported in part due to the rising in life expectancy. For instance, exposure to air pollution, and ...
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...
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.