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Dissertations / Theses on the topic 'Propylene glycol ethers'

Author: Grafiati

Published: 24 April 2022

Last updated: 18 July 2025

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1

Zhao, Cen. "Advanced Oxidation Processes of Problematic Toxin and Water Contaminants: Cylindrospermopsin, Iopamidol, 4-methylcyclohexane Methanol and Propylene Glycol Phenyl Ether." FIU Digital Commons, 2015. http://digitalcommons.fiu.edu/etd/2235.

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The occurrences of cyanotoxin and organic contaminants threaten drinking water sources and are a serious human health and environmental concern. The control of these problematic contaminants and the remediation of the associated contaminants are critical for ensuring safe drinking water to significant populations. Advanced oxidation processes (AOPs) have received considerable attention as a potential water treatment for various pollutants. In this dissertation, advanced oxidative degradation of four problematic water toxic contaminants (CYN, iopamidol, 4-methylcyclohexane methanol and propylen

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2

Hsieh, Cheng-Ting, and 謝政廷. "Vapor-Liquid Equilibria for Mixtures Containing Acetate Acid , Propylene Glycol Monomethyl Ether , and Propylene Glycol Monomethyl Ether Acetate." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/36505914462282800689.

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碩士<br>國立臺灣科技大學<br>化學工程系<br>92<br>A static-type apparatus equipped with a visual cell was utilized in the present study to measure isothermal vapor-liquid equilibrium (VLE) data. The investigated binary mixtures were composed of acetic acid, propylene glycol monomethyl ether (PGME), and propylene glycol methyl ether acetate (PGMEA). The measurements were conducted in a temperature range from 343.15K to 393.15K. These new VLE data are urgently needed in process development of manufacturing propylene glycol methyl ether acetate via reactive distillation. The vapor-liquid equilibrium data were cor

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3

WANG, YI-LIN, and 王一霖. "Isothermal Vapor-Liquid Equilibria for Mixtures Containing Water, Propylene Glycol Monomethyl Ether, and Propylene Glycol Monomethyl Ether Propionate." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/5k4z7n.

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碩士<br>國立臺灣科技大學<br>化學工程系<br>100<br>A static-type apparatus equipped with a visual cell was utilized in the present study to measure isothermal vapor-liquid equilibrium (VLE) and vapor-liquid-liquid equilibrium (VLLE) data over a temperature range of 318.15 K to 363.15 K. The VLE data were determined experimentally for the binary systems of propylene glycol monomethyl ether (PGME) + propylene glycol monomethyl ether propionate (PGMEP). The VLLE data were also measured for water + PGMEP and water + PGME + PGMEP. The experimental data of the binary systems can be correlated well with the NRTL-HOC

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4

Lin, Ming-Wei, and 林明緯. "The Optimal Process Design of Propylene Glycol Monomethyl Ether." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/32996168576814245306.

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碩士<br>國立中興大學<br>化學工程學系所<br>103<br>This study comprises the design of distillation processes for solvent recycling with Aspen Plus. Propylene glycol monomethyl ether (PM) is separable from thinner by distillation. Raw material includes alcohol, ethers and esters.This study comprises the design of distillation processes for solvent recycling with Aspen Plus. Propylene glycolmonomethyl ether (PM) is separable from thinner by distillation. Raw material includes alcohol, ethers and esters. NRTL activity coefficient and Hayden-O’Connell state equation are chosen to model the real situation with good

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5

Tsai, Pei-Yuan, and 蔡培元. "Removal of Propylene Glycol Monomethyl Ether Acetate by Biofiltration Process." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/78099269092033673200.

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碩士<br>國立交通大學<br>分子醫學與生物工程研究所<br>98<br>This research is aimed to establish an effective biofiltration process which applys to remove the water-soluble organic waste gases emission from semiconductors and photonics industry. The target pollutant is focus on propylene glycol monomethyl ether acetate (PGMEA), which is harmful for human body, especially for liver and kidney. The objective of this study is to estimate the removal efficiency in different conditions by three kinds of biofiltration processes. The data showed that it could remove 100-300 ppm PGMEA for 98% removal efficiency (RE) in biof

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6

Kuo, Chia-Hui, and 郭佳慧. "Using SPME-GC Technique in Propylene Glycol Ether acetate Airborne Monitoring." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/96245944700907969503.

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碩士<br>弘光科技大學<br>職業安全與防災研究所<br>98<br>A headspace solid-phase microextraction (HS-SPME) combining capillary gas chromatography with flame ionization detection (GC-FID) for use in the determination of three frequentlly used propylene glycol ethers (PEs) at ppb level is described. A commercial 75m carboxen- polydimethylsiloxane fiber was used to extract the analytes from PEs standard gas. The factors affecting the HS-SPME extraction, such as coating material, desorption time, temperature, concentration and wind velocity etc. were discussed. The concentration ranges for calibration curves were 23

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7

Shan, Yu-Ran, and 沈育任. "The study of reaction of propylene glycol methyl ether with ozone." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/m685gp.

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碩士<br>義守大學<br>化學工程學系暨生物技術與化學工程研究所<br>106<br>This research was applied the high oxidation of ozone and high absorption capacity of ZSM-5 zeolite to study the degradation of PGME. The identification of reaction intermediate and products were useful to understand the possible mechanism. There were new absorptions of C=O vibrational mode were observed after the ozone passed through PGME sample. Compared with GC/MS spectrum, suggested that the products included carbon dioxide, acetaldehyde, methyl formate, isopropyl alcohol, acrylic acid, propylene glycol, methyl acetate, and methyl lactate. Mi

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8

Li, Ya-Chien, and 李亞蒨. "Treating the Wastewater Containing Propylene Glycol Methyl Ether Acetate by Fenton Method." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/hwqaca.

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碩士<br>國立高雄科技大學<br>化學工程與材料工程系<br>107<br>Propylene Glycol Methyl Ether Acetate (PMA) is often used as a solvent for water-based paints because of its suitable polarity and volatility. The vapor of solvents is usually removed from the waste gas by water curtain equipment in spraying plants, so PMA becomes one of the main organic pollutants in the wastewater of such plants. Chemical Oxygen Demand (COD) of such wastewater is often close to 10,000 mg/L, but according to environment regulation of ROC, it must be treated until COD is less than 100 mg/L before discharging. Fenton method is a method tha

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9

Chen, Hong-Long, and 陳鴻龍. "Design and Control of the Process of Propylene Glycol Mono-methyl Ether Acetate." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/34468859076172762173.

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碩士<br>國立臺灣科技大學<br>化學工程系<br>102<br>In this research, design and control of a reactive distillation column to produce propylene glycol mono-methyl ether acetate (PGMEA) from propylene glycol methyl ether (PGME) and acetic acid (AA) via the esterification reaction is proposed. PGMEA is widely used as the photoresist in electronics industry and it is also important reactant in other industry. First of all, suitable thermodynamic and kinetic model are chosen to describe this process and perform the steady-state simulation by Aspen Plus. The system in this process is a reversible reaction and seekin

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10

Luo, Shih-Pang, and 羅詩雱. "Using Tape Stripping Mehtod for Dermal Exposure of Propylene Glycol Monomethyl Ether Acetate." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/05043138873058408126.

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碩士<br>弘光科技大學<br>職業安全與防災研究所<br>100<br>Abstract Glycol ethers are frequently used as solvents, detergents and emulsifiers in industrial and consumer products. Because of their toxic potential, the ethylene glycol ethers are increasingly being substituted by propylene glycol ethers, wich do not show toxic properties such as tetratogenicity, haemolysis and testicular atrophy,but for which less information is published.Exposure of formulators and users to propylene glycol ethers, and among them mainly propylene glycol ethers, can occur via respiratory and dermal uptake of the vapour,or via dermal u

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11

Chang, Yu-feng, and 張鈺鋒. "Biotreatment of propylene glycol methyl ether acetate (PGMEA) and toluene in air streams." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/t2h886.

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博士<br>國立中山大學<br>環境工程研究所<br>97<br>Biotreatment for air pollution control can generally be categorized as biofilter, bioscrubbing and biotrickling filter systems. Generally, biotreatments could be effective and more economical treatment for containment waste gas if designed and operated properly. A two stage down-flow biofilter (2.18 m in height and 0.4 m×0.4 m in cross-sectional area) was constructed to develop a biofilter packed only with fern chips for the removal of air-borne propylene glycol monomethyl ether acetate (PGMEA). Both stages were packed with fern chips of 0.30 m in height and 0.

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12

Syu, Shih-Bo, and 徐詩博. "Study on Photocatalytic Degradation of Ozone and Propylene Glycol Monomethyl Ether Acetate over TiO2." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/z225vj.

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碩士<br>國立臺灣科技大學<br>化學工程系<br>103<br>In this work, the photocatalytic degradation of gaseous ozone and propylene glycol monomethyl ether acetate (PGMEA) over metal-modified TiO2 filter under UV illumination in a continuous flow reaction was investigated in detail. The effects of kind of metal, amount of metal, and amount of titanium on photocatalytic reaction rate were studied to obtain the most reactive catalyst. The metal-modified ceramic filter was prepared in a dip coating process using the metal-containing titania sol. The surface physical properties of photocatalytic filter were analyzed by

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13

Liou, Siang-Cian, and 劉向千. "Study on the biotrickling-biofiltration treatment of gas-borne propylene glycol methyl ether acetate (PGMEA)." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/01273259153919752327.

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碩士<br>國立中山大學<br>環境工程研究所<br>102<br>Industrial applications of organic solvents would emit large quantities of volatile organic compounds (VOCs) into the atmospheric environment. Biotreatment for air pollution control can generally be categorized as biofiter, biotrickling filter and bioscrubbing systems. This study armed to develop a biotrickling-biofilter packed only with wood chips for the removal of air-borne propylene glycol monomethyl ether acetate (PGMEA). The wood chip biofilters could avoid the shortcomings of traditional media, such as compaction, drying, and breakdown, which lead to th

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14

Ramsauer, Bernhard [Verfasser]. "Characterization of propylene glycol n-propyl ether : measuring and modeling of important thermodynamic parameters / von Bernhard Ramsauer." 2010. http://d-nb.info/1001181506/34.

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15

Peng, Hsiao-ting, and 彭筱婷. "Study on the Treatment of Airborne Propylene Glycol Monomethyl Ether Acetate (PGMEA) by Biofilter Packed with Fern Chips." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/34580455735358100489.

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碩士<br>國立中山大學<br>環境工程研究所<br>94<br>This study armed to develop a biofilter packed only with fern chips for the removal of air-borne propylene glycol monomethyl ether acetate (PGMEA). The fern chip biofilters could avoid the shortcomings of traditional media, such as compaction, drying, and breakdown, which lead to the performance failure of the biofilters. In the present study, a three stage down-flow biofilter (2.18 m in height and 0.4 m×0.4 m in cross-sectional area) was constructed for the performance test. The first stage serviced as a humidifier for the incoming gas and the following

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16

Huang, Bo-Jen, and 黃柏仁. "Kinetic Study on Degradation of Gas-phase 1, 3-Butadiene and Propylene Glycol Monomethyl Ether Acetate (PGMEA) by UV/O3." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/08228867849148593462.

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博士<br>國立中山大學<br>環境工程研究所<br>94<br>This study investigates the rate kinetics for BD and PGMEA oxidation by UV/O3 process. The reactor constructs of a 100 cm x 20 cm x 85 cm (L x W x H) stainless steel chamber, in which four vertical steel plates (20 cm x 65 cm, W x H) were inserted to establish a plug flow path for the flowing gas. The reactor has a total effective volume of 170 L. Each of the five compartments of the reactor is equipped with an individual UV irradiation system with a 3.0-cm x 15-cm (ID x L) quartz sheath that housed an UV lamp, and two electric UV power inputs of 0.147 or 0.

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17

葉虹秀. "Vapor-liquid equilibria for the binary systems of water, methanol, ethanol and 2-propanol+ propylene glycol monomethyl ether acetate at 101.3 kPa." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/33800271752242154178.

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碩士<br>明新科技大學<br>化學工程研究所<br>98<br>Vapor-liquid equilibria measurements have been made for the binary systems of water, methanol, ethanol and isopropanol + propylene glycol monomethyl ether acetate at 101.3 kPa by using a static recirculating still. The isobaric T-x-y data have been reported and the thermodynamic consistency has been examined. The nonideal behavior in the vapor phase was considered by Redlich-Kwong equation of states in calculating the fugacity coefficient. The NRTL and UNIQUAC activity coefficient models were used to correlate the experimental VLE data. The calculated results,

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18

Cheng, Mao-Wei, and 程茂偉. "The feasibility of making paint mixing with propylene glycol mono-methyl ether in dissolving acrylic resins and the effect of silicate series in for heat insulation." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/67506122886559393879.

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碩士<br>崑山科技大學<br>材料工程研究所<br>101<br>Paints in general contain organic solvents because paints consist of consolidated raw materials (mostly resins and cellulose), pigments, solvents, and unwind agents of pigment etc. Acrylic-based resins are waterproof, so the main solvent is toluene; however, due to toluene’s volatile nature, it is universally recognized as a main air pollutant. Since the concept of green products and clean production has become of great importance worldwide, paint improvement has headed in the direction of less toxicity, less pollution and high value added products. This study

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