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You searched for subject:(desorption order). Showing records 1 – 3 of 3 total matches.

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1. Sattar, Md. Abdus. 光和周波および第二高調波分光によるSi(111)表面の水素脱離研究.

Degree: 博士(マテリアルサイエンス), 2016, Japan Advanced Institute of Science and Technology / 北陸先端科学技術大学院大学

Supervisor:水谷 五郎

マテリアルサイエンス研究科

博士

Subjects/Keywords: Sum frequency generation (SFG); Second harmonic generation (SHG); Si (111)1x1surface; desorption order; desorption activation energy; hydrogen coverage

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Sattar, M. A. (2016). 光和周波および第二高調波分光によるSi(111)表面の水素脱離研究. (Thesis). Japan Advanced Institute of Science and Technology / 北陸先端科学技術大学院大学. Retrieved from http://hdl.handle.net/10119/13808

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16th Edition):

Sattar, Md Abdus. “光和周波および第二高調波分光によるSi(111)表面の水素脱離研究.” 2016. Thesis, Japan Advanced Institute of Science and Technology / 北陸先端科学技術大学院大学. Accessed October 13, 2019. http://hdl.handle.net/10119/13808.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7th Edition):

Sattar, Md Abdus. “光和周波および第二高調波分光によるSi(111)表面の水素脱離研究.” 2016. Web. 13 Oct 2019.

Vancouver:

Sattar MA. 光和周波および第二高調波分光によるSi(111)表面の水素脱離研究. [Internet] [Thesis]. Japan Advanced Institute of Science and Technology / 北陸先端科学技術大学院大学; 2016. [cited 2019 Oct 13]. Available from: http://hdl.handle.net/10119/13808.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Sattar MA. 光和周波および第二高調波分光によるSi(111)表面の水素脱離研究. [Thesis]. Japan Advanced Institute of Science and Technology / 北陸先端科学技術大学院大学; 2016. Available from: http://hdl.handle.net/10119/13808

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation


Penn State University

2. Mubin, Shafat A. Theory of Thermodynamics and Kinetics of Benzene Adsorption on Ag(111).

Degree: PhD, Physics, 2016, Penn State University

The adsorbed layer of benzene on Ag(111) is studied using molecular dynamics techniques. A force-field is developed to describe benzene-Ag interaction, involving the introduction of a fictitious site at the center of benzene, and the binding energy Eb=0.64 eV and the vanishing coverage prefactor of desorption k0 = (5.0±3.0) × 1014 s-1 are obtained from the force-field. Subsequently, the intermolecular interaction is studied and found to be dominated by substrate-mediated interactions, primarily the pairwise interaction between adsorbates produced by scattering of Shockley states. The z-dependence of these substrate-mediated interactions is derived and found to create noticeable difference to the order-disorder transition temperature of the adsorbed benzene monolayer. These substrate-mediated interactions are further validated by simulating high-coverage temperature-programmed desorption (TPD) spectra. In simulating high-coverage TPD, the bond-boost method is used to boost the simulated timescale several orders of magnitude. In the process, the impact of surface defects on TPD spectra is also investigated, and found to slightly shift the peak desorption temperatures and considerably broaden the trailing edge of the spectra.

Subjects/Keywords: Benzene; Monolayer; Desorption; Accelerated MD; Bond-boost Method; Force-field; Order-disorder; Ag(111); TPD; Substrate-mediated Interaction; Molecular Dynamics; Surface Defects

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APA (6th Edition):

Mubin, S. A. (2016). Theory of Thermodynamics and Kinetics of Benzene Adsorption on Ag(111). (Doctoral Dissertation). Penn State University. Retrieved from https://etda.libraries.psu.edu/catalog/13319svm5300

Chicago Manual of Style (16th Edition):

Mubin, Shafat A. “Theory of Thermodynamics and Kinetics of Benzene Adsorption on Ag(111).” 2016. Doctoral Dissertation, Penn State University. Accessed October 13, 2019. https://etda.libraries.psu.edu/catalog/13319svm5300.

MLA Handbook (7th Edition):

Mubin, Shafat A. “Theory of Thermodynamics and Kinetics of Benzene Adsorption on Ag(111).” 2016. Web. 13 Oct 2019.

Vancouver:

Mubin SA. Theory of Thermodynamics and Kinetics of Benzene Adsorption on Ag(111). [Internet] [Doctoral dissertation]. Penn State University; 2016. [cited 2019 Oct 13]. Available from: https://etda.libraries.psu.edu/catalog/13319svm5300.

Council of Science Editors:

Mubin SA. Theory of Thermodynamics and Kinetics of Benzene Adsorption on Ag(111). [Doctoral Dissertation]. Penn State University; 2016. Available from: https://etda.libraries.psu.edu/catalog/13319svm5300

3. Berhane, Tedros Mesfin. KINETIC AND EQUILIBRIUM SORPTION EXPERIMENTS INVESTIGATING PALYGORSKITE-MONTMORILLONITE AS A POTENTIAL FILTER MEDIUM FOR REMOVAL OF PHARMACEUTICALS AND ENDOCRINE-DISRUPTING COMPOUNDS.

Degree: PhD, Geology & Environmental Earth Science, 2015, Miami University

Water resources contamination by pharmaceutically-active and endocrine-disrupting compounds (EDCs) is widespread. Sewage treatment plants (STPs) are the main gateway of these compounds to the natural environment, posing acute and chronic health risks to aquatic organisms once discharged to rivers and streams as well as a potential human health concern through induced infiltration to municipal groundwater supplies. Concentrations of many of these compounds in the environment tend to be very low; however, the ecosystem and human health effects associated with chronic exposure to low-level concentrations are unknown. Also unknown are the effects when a synergic mix of these compounds and other chemicals that are consumed over a long period of time. There is therefore a need to research cost-effective, innovative alternative treatment technologies to remove pharmaceuticals and EDCs from STP effluent. Sorption is one of the main treatment mechanisms that is employed in sewage- and drinking-water treatment plants due to its low cost, simplicity and effectiveness. This dissertation used batch kinetic and batch equilibrium sorption-desorption experimental approaches to explore the use of the palygorskite-montmorillonite (PM) mix of clay minerals as a function of granule size for removing a selected group of pharmaceuticals and EDCs. This optimization based on granule size is mainly to maximizing both water-flow through the medium while still achieving significant retention of the compounds under common sewage effluent and environmental conditions (pH, ionic strength and temperature). This project also focused on improving the sorptive removal capacity of PM through surfactant-intercalation of PM for a selected group of pharmaceuticals and EDCs. Results from the batch experiments were fit to appropriate kinetic and equilibrium sorption models. For those compounds that followed a Langmuir equilibrium isotherm, a best fit-kinetic model was related to the Langmuir kinetics. This generated a true kinetic, predictive model that was independent of initial experimental conditions and that could be used to evaluate the transport and fate of the compounds through the filter media. The PM had a mix of fibrous and plate-like morphologies. Equilibrium sorption/ desorption data were best fit to the Freundlich isotherm for carbamazepine (with the Freundlich exponent >1) and to the Langmuir isotherm for bisphenol A and ciprofloxacin. As expected, sorption was inversely dependent on granule size. For carbamazepine, given the small differences in sorption between the smallest and medium granules sizes, the medium granule sizes would be appropriate for optimizing both flow and sorption. For ciprofloxacin, and bisphenol A, the smaller granule size would be the most appropriate. Carbamazepine had a higher relative sorption at elevated concentrations (Freundlich exponent greater than one) indicating cooperative sorption. For ciprofloxacin, and bisphenol A, the fit of the Langmuir isotherm implied that there were a limited number of sorption… Advisors/Committee Members: Krekeler, Mark (Committee Co-Chair), Levy, Jonathan (Advisor).

Subjects/Keywords: Environmental Geology; Environmental Studies; Geology; Hydrologic Sciences; Hydrology; Water Resource Management; Palygorskite, montmorillonite, pharmaceuticals, EDCs; surfactant, sorption, desorption, hysteresis, Freundlich, Langmuir, kinetic-sorption, pseudo-second-order, Elovich, intraparticle diffusion

desorption of carbamazepine by palygorskite- montmorillonite (PM) filter medium: Effect… …fitting parameters for sorption and desorption of carbamazepine by the three PM granule sizes… …desorption of bisphenol A and ciprofloxacin by palygorskitemontmorillonite (PM) filter… …together. CHAPTER 2: Sorption-desorption of carbamazepine by palygorskite- montmorillonite (… …initial aqueous concentrations. FIGURE 2.5 – Carbamazepine isotherms after net-desorption A… 

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Berhane, T. M. (2015). KINETIC AND EQUILIBRIUM SORPTION EXPERIMENTS INVESTIGATING PALYGORSKITE-MONTMORILLONITE AS A POTENTIAL FILTER MEDIUM FOR REMOVAL OF PHARMACEUTICALS AND ENDOCRINE-DISRUPTING COMPOUNDS. (Doctoral Dissertation). Miami University. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=miami1429882830

Chicago Manual of Style (16th Edition):

Berhane, Tedros Mesfin. “KINETIC AND EQUILIBRIUM SORPTION EXPERIMENTS INVESTIGATING PALYGORSKITE-MONTMORILLONITE AS A POTENTIAL FILTER MEDIUM FOR REMOVAL OF PHARMACEUTICALS AND ENDOCRINE-DISRUPTING COMPOUNDS.” 2015. Doctoral Dissertation, Miami University. Accessed October 13, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=miami1429882830.

MLA Handbook (7th Edition):

Berhane, Tedros Mesfin. “KINETIC AND EQUILIBRIUM SORPTION EXPERIMENTS INVESTIGATING PALYGORSKITE-MONTMORILLONITE AS A POTENTIAL FILTER MEDIUM FOR REMOVAL OF PHARMACEUTICALS AND ENDOCRINE-DISRUPTING COMPOUNDS.” 2015. Web. 13 Oct 2019.

Vancouver:

Berhane TM. KINETIC AND EQUILIBRIUM SORPTION EXPERIMENTS INVESTIGATING PALYGORSKITE-MONTMORILLONITE AS A POTENTIAL FILTER MEDIUM FOR REMOVAL OF PHARMACEUTICALS AND ENDOCRINE-DISRUPTING COMPOUNDS. [Internet] [Doctoral dissertation]. Miami University; 2015. [cited 2019 Oct 13]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=miami1429882830.

Council of Science Editors:

Berhane TM. KINETIC AND EQUILIBRIUM SORPTION EXPERIMENTS INVESTIGATING PALYGORSKITE-MONTMORILLONITE AS A POTENTIAL FILTER MEDIUM FOR REMOVAL OF PHARMACEUTICALS AND ENDOCRINE-DISRUPTING COMPOUNDS. [Doctoral Dissertation]. Miami University; 2015. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=miami1429882830

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