Relevant bibliographies by topics / Dichloroethylene

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Dichloroethylene'

Author: Grafiati
Published: 4 June 2021
Last updated: 14 February 2022

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Journal articles on the topic "Dichloroethylene"

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He, Miao Miao, Xiao Jun Hu, Yong Biao Peng, and Xin He. "Removal of Dichloroethylene in Water Using a Novel TCAS-Loaded Resin." Advanced Materials Research 634-638 (January 2013): 334–37. http://dx.doi.org/10.4028/www.scientific.net/amr.634-638.334.

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Through the method of the static tests, the removal rate of aqueous dichloroethylene onto a new TCAS-loaded resin was researched. This TCAS-loaded resin was made of a novel supramolecular acceptor compound named thiacalix[4]arenetetrasulfonate(TCAS) and anion exchange resin, and the adsorption mechanism was discussed preliminarily. The results of adsorption indicated that the pH value was an important factor for the removal of dichloroethylene and it would be better for the adsorption if the pH value was greater than 6. The operating temperature should be controlled in 5 to 15°C for the adsorption of dichloroethylene onto TCAS-loaded resin while the removal rate decreased with the temperature increasing and the best time for reaction was 40min. The removal rate of dichloroethylene in aqueous solution was better when 25mL aqueous solution of dichloroethylene (1.0mg/L) was adsorbed by 0.5g TCAS-loaded resin. The dichloroethylene can be resolving and TCAS-loaded resin can be reused.
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Ferrey, Mark L., Richard T. Wilkin, Robert G. Ford, and John T. Wilson. "Nonbiological Removal ofcis-Dichloroethylene and 1,1-Dichloroethylene in Aquifer Sediment Containing Magnetite." Environmental Science & Technology 38, no. 6 (March 2004): 1746–52. http://dx.doi.org/10.1021/es0305609.

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Mosses, Joanna, David A. Turton, Leo Lue, Jan Sefcik, and Klaas Wynne. "Crystal templating through liquid–liquid phase separation." Chemical Communications 51, no. 6 (2015): 1139–42. http://dx.doi.org/10.1039/c4cc07880b.

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Hirata, T., O. Nakasugi, M. Yoshioka, and K. Sumi. "Ground Water Pollution by Volatile Organochlorines in Japan and Related Phenomena in the Subsurface Environment." Water Science and Technology 25, no. 11 (June 1, 1992): 9–16. http://dx.doi.org/10.2166/wst.1992.0267.

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The groundwater pollution by volatile organochlorines has been increasingly becoming a major environmental issue in many developed nations. In particular, trichloroethylene and tetrachloroethylene were widely detected in regional groundwaters of Japan. The paper describes the characteristics of groundwater pollution of Japan on the basis of the nationwide survey results, and introduces an incident in industrial site and subsequent counter-measures. In this site detailed investigations of 26 monitoring wells surrounding the pollutant source have continued to date since remedial operation in 1984, and cis-l,2-dichloroethylene was discovered to be created as intermediate product from trichloroethylene during the biodegradation process. Furthermore, the long-term continuous surveys reveal two types of organochlorine behavior in ground-water, that is, (l)cis-l,2-dichloroethylene concentration is proportional to that of trichloroethylene and (2)cis-l,2-dichloroethylene concentration is nearly constant in no relation with trichloroethylene behavior, in seasonal variation of individual well-water.
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Oki, Kyoichi, Sachiko Tsuchida, Hiromasa Nishikiori, Nobuaki Tanaka, and Tsuneo Fujii. "Photocatalytic degradation of chlorinated ethenes." International Journal of Photoenergy 5, no. 1 (2003): 11–15. http://dx.doi.org/10.1155/s1110662x03000059.

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Degradation of three chlorinated ethenes, trichloroethylene, trans-1,2-dichloroethylene and cis-1,2-dichloroethylene, by UV-light irradiatedTiO2catalyst prepared by the sol-gel method in dry air at ambient temperature have been examined by using FTIR measurement. The chlorinated ethenes rapidly decomposed to produce dichloroacethyl chloride, CO, HCl, andCOCL2. For trans- and cis-1,2-DCE systems isomerization to each other is found to be the first step of the degradation. The C = C bond of the chlorinated ethenes interacts directly withTiO2site and, consequently, the degradation results in several products on the catalyst surface in these systems.
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Okeke, Benedict C., Young C. Chang, Masahiro Hatsu, Tohru Suzuki, and Kazuhiro Takamizawa. "Purification, cloning, and sequencing of an enzyme mediating the reductive dechlorination of tetrachloroethylene (PCE) fromClostridium bifermentansDPH-1." Canadian Journal of Microbiology 47, no. 5 (May 1, 2001): 448–56. http://dx.doi.org/10.1139/w01-048.

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An enzyme mediating the reductive dechlorination of tetrachloroethylene (PCE) from cell-free extracts of Clostridium bifermentans DPH-1 was purified, cloned, and sequenced. The enzyme catalyzed the reductive dechlorination of PCE to cis-1,2-dichloroethylene via trichloroethylene, at a Vmaxand Kmof 73 nmol/mg protein and 12 µM, respectively. Maximal activity was recorded at 35°C and pH 7.5. Enzymatic activity was independent of metal ions but was oxygen sensitive. A mixture of propyl iodide and titanium citrate caused a light-reversible inhibition of enzymatic activity suggesting the involvement of a corrinoid cofactor. The molecular mass of the native enzyme was estimated to be approximately 70 kDa. Sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE) and matrix-assisted laser desorption ionization-time of flight/mass spectrometry (MALDI–TOF/MS) revealed molecular masses of approximately 35 kDa and 35.7 kDa, respectively. A broad spectrum of chlorinated aliphatic compounds (PCE, trichloroethylene, cis-1,2-dichloroethylene, trans-1,2-dichloroethylene, 1,1-dichloroethylene, 1,2-dichloropropane, and 1,1,2-trichloroethane) was degraded. With degenerate primers designed from the N-terminal sequence (27 amino acid residues), a partial sequence (81 bp) of the encoding gene was amplified by polymerase chain reaction (PCR) and sequenced. Southern analysis of C. bifermentans genomic DNA using the PCR product as a probe revealed restriction fragment bands. A 5.0 kb ClaI fragment, harboring the relevant gene (designated pceC) was cloned (pDEHAL5) and the complete nucleotide sequence of pceC was determined. The gene showed homology mainly with microbial membrane proteins and no homology with any known dehalogenase, suggesting a distinct PCE dehalogenase.Key words: tetrachloroethylene, Clostridium bifermentans DPH-1, PCE dehalogenase, gene cloning.
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Hayes, J. R., L. W. Condie, J. L. Egle, and J. F. Borzelleca. "The Acute and Subchronic Toxicity in Rats of Trans-1,2-Dichloroethylene in Drinking Water." Journal of the American College of Toxicology 6, no. 4 (July 1987): 471–78. http://dx.doi.org/10.3109/10915818709075692.

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Trans-1,2-dichloroethylene was administered either by gavage (acute studies) or in drinking water (subchronic studies) to male and female Sprague-Dawley derived Charles River rats. The acute oral LD50 was 7902 mg/kg for males and 9939 mg/kg for females. Decreased activity, ataxia, and depressed respiration preceded death. In the subchronic study, rats received theoretical daily doses of 500, 1500, and 3000 mg trans-1,2-dichloroethylene/kg body weight/day for 90 consecutive days. The actual daily doses were 402, 1314, and 3114 mg/kg for males and 353, 1257, and 2809 mg/kg for females. There were no compound-related deaths. There were no consistently significant compound-related dose-dependent adverse effects on any of the hematological, serological, or urinary parameters evaluated. There were dose-dependent increases in kidney weights and ratios in treated females. There were no compound-related gross or histological effects. No specific organ site toxicity could be identified in these studies. These data suggest that the toxicity from exposure to trans-1,2-dichloroethylene in drinking water apparently is low and probably does not constitute a serious health hazard.
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Kim, Y., and L. Semprini. "Cometabolic transformation of cis-1,2-dichloroethylene and cis-1,2-dichloroethylene epoxide by a butane-grown mixed culture." Water Science and Technology 52, no. 8 (October 1, 2005): 125–31. http://dx.doi.org/10.2166/wst.2005.0242.

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Aerobic cometabolism of cis-1,2-dichloroethylene (c-DCE) by a butane-grown mixed culture was evaluated in batch kinetic tests. The transformation of c-DCE resulted in the coincident generation of c-DCE epoxide. Chloride release studies showed ∼75% oxidative dechlorination of c-DCE. Mass spectrometry confirmed the presence of a compound with mass-to-charge-fragment ratios of 112, 83, 48, and 35. These values are in agreement with the spectra of chemically synthesized c-DCE epoxide. The transformation of c-DCE required O2, was inhibited by butane and was inactivated by acetylene (a known monooxygenase inactivator), indicating that a butane monooxygenase enzyme was likely involved in the transformation of c-DCE. This study showed c-DCE epoxide was biologically transformed, likely by a butane monooxygenase enzyme. c-DCE epoxide transformation was inhibited by both acetylene and c-DCE indicating a monooxygenase enzyme was involved. The epoxide transformation was also stopped when mercuric chloride (HgCl2) was added as a biological inhibitor, further support a biological transformation. To our knowledge this is the first report of the biological transform c-DCE epoxide by a butane-grown culture.
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Ratovelomanana, V., A. Hammoud, and G. Linstrumelle. "Selective palladium-catalysed substitution of 1,1-dichloroethylene." Tetrahedron Letters 28, no. 15 (January 1987): 1649–50. http://dx.doi.org/10.1016/s0040-4039(00)95383-8.

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Ban, M., D. Hettich, N. Huguet, and L. Cavelier. "Nephrotoxicity mechanism of 1,1-dichloroethylene in mice." Toxicology Letters 78, no. 2 (July 1995): 87–92. http://dx.doi.org/10.1016/0378-4274(94)03237-2.

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Dissertations / Theses on the topic "Dichloroethylene"

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Jones, Juliet Ann. "Protein targets and metabolites of 1,1-dichloroethylene." Diss., The University of Arizona, 2001. http://hdl.handle.net/10150/289989.

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Xenobiotics and their metabolites are capable of covalent modification of proteins that may lead to cellular injury. Determining the identity of modified proteins, however, has to date been hindered by available analytical instrumentation. Advances in mass spectrometry now allow for routine analysis of large biomolecules. This has given rise to the field of proteomics , which uses mass spectrometry in conjunction with various separation techniques to gain information about large numbers of proteins. This dissertation describes the development of a new proteomic methodology to identify unknown protein targets and its application to identifying protein targets and metabolites of 1,1-dichloroethylene (1,1-DCE). 1,1-DCE undergoes P450 bioactivation in hepatocytes to produce 1,1-DCE oxide and 2-chloroacetyl chloride. These either modify proteins directly, or form the glutathione conjugate S-(2-chloroacetyl)glutathione, which in turn is capable of protein cysteinyl sulfhydryl alkylation. In animals, exposure to 1,1-DCE results in selective injury to the biliary canalicular membrane. Biochemical and physiological evidence suggests damage to the canalicular membrane transport proteins. Putative 1,1-DCE metabolite adducts, including S-carboxymethylated and 2-chloroacetylated peptides and GSCOCH₂-S-cys-peptide adducts, were synthesized using model peptides containing one or two cysteines. The adducts were analyzed by ESI-MS-MS and resulted in fragmentation patterns characteristic of the adduct moiety, including fragment ions, losses from the parent ion and pairs of ions separated by the mass of the modified cysteine residue. The data reduction algorithm SALSA was developed to search for user-specified fragmentation characteristics in MS-MS data dependent scans. Bile samples obtained from animals exposed to 1,1-DCE were analyzed by ESI-MS-MS. SALSA was then used to search the data for spectra containing adduct-specific fragmentation. Five hepatic S-carboxymethylated proteins were identified, as were the 1,1-DCE metabolites S-carboxymethylglutathione, S-(cysteinylacetyl)glutathione and the cyclic product of the intermolecular rearrangement of S-(2-chloroacetyl)glutathione. This work demonstrates the use of mass spectrometry to characterize unknown, modified proteins in complex mixtures without the use of radio- or immunochemical labeling.
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Gu, Zhongchun April. "Assessment of reductive dechlorination of vinyl chloride and characterization of enrichments that grow on vinyl chloride as the sole carbon and energy source /." Thesis, Connect to this title online; UW restricted, 2003. http://hdl.handle.net/1773/10169.

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Dowsley, Taylor Forbes. "CYP2E1-dependent bioactivation of 1,1-dichloroethylene to reactive intermediates in murine and human lung and liver microsomes." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp02/NQ38304.pdf.

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Boyd, Stephanie Mary. "Strain-related differences in CYP2E1 levels are associated with differential bioactivation of 1,1-dichloroethylene in murine lung and liver." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp03/MQ52975.pdf.

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McDougal, Rebecca, and n/a. "DDT residue degradation by soil bacteria." University of Otago. Department of Microbiology & Immunology, 2007. http://adt.otago.ac.nz./public/adt-NZDU20070914.142931.

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1,1,1-trichloro-2,2-bis(4-chlorophenyl)-ethane (DDT) residues (DDTr) are widespread and persistent environmental contaminants, and have been classed as priority pollutants by the United Nations Environment Programme (UNEP). DDTr are potent endocrine disrupting molecules, and have been associated with reproductive abnormalities in juvenile alligators and rats. Microorganisms that metabolise DDTr both aerobically and anaerobically have been isolated and characterised. Bacteria that degrade DDTr aerobically typically utilise a dioxygenase to initiate degradative reactions through ring-hydroxylation, and convert DDTr to 4-chlorobenzoate without further degradation. Terrabacter sp. strain DDE-1 was isolated from DDTr-contaminated soil from Canterbury, New Zealand, and aerobically degrades 1,1-dichloro-2,2-bis-(4-chlorophenyl)-ethylene (DDE) to 4-chlorobenzoate, when grown in the presence of biphenyl (BP). The intermediates of degradation were inferred to be the end products of dioxygenase activity. Sequencing of a large linear plasmid, pBPH-1, from strain DDE-1 identified a cluster of genes with high levels of sequence similarity to BP-degradation genes from Rhodococcus spp. and Pseudomonas spp. This plasmid is lost at high frequency producing the plasmid-cured strain MJ-2, which has lost the ability to degrade BP or DDE. The aim of this study was to confirm that DDE-degradation in strain DDE-1 is encoded by the bph operon located on pBPH-1. No genetic systems to study gene function in either DDE-1 or MJ-2 could be developed using an array of broad-host range vectors. However, heterologous expression of the bph genes in Rhodococcus erythropolis strain TA422 was successful, with the recombinant strain TA425, obtaining the ability to utilise BP and DDE as a sole source of carbon and energy. DDE-1 was shown to convert indole to indigo, but MJ-2 could not, indicating that the biphenyl dioxygenase located on pBPH-1 is responsible for this activity. The bph genes from strain DDE-1 also conferred the ability to produce indigo from indole on strain TA425, confirming successful expression of the functional biphenyl dioxygenase in this strain. Despite several attempts to show quantitative degradation in strain TA425 using gas chromatography, the results were inconclusive Further analysis is needed to provide unequivocal evidence of DDE-degradation by strain TA425. Attempts to express the bph genes in rhizosphere-colonising bacteria, such a Rhizobium spp. or Pseudomonas spp., were unsuccessful, as evidenced by the inability to produce indigo, hence the lack of a functional biphenyl dioxygenase. However, RT-PCR did indeed indicate that P. aeruginosa strain Fin1 produced a bphA1 transcript, indicating that an error is occurring post-transcriptionally in these strains, to prevent production of the functional enzyme. New Zealand has recently been shown to contain hotspots of DDTr-contamination. The second aim of this study was to determine the prevalence of DDTr-degrading bacteria and to gain insight into the types of bacteria that inhabit sites contaminated with DDTr. To investigate this, culture-dependent and culture-independent techniques were employed. Enrichment for DDTr-degrading bacteria yielded species of Rhodococcus and Ralstonia using DDTr-overlayer plate assays. The polymerase chain reaction (PCR) and denaturing gradient gel electrophoresis (DGGE) were used to amplify and analyse the 16S rDNA and 16S rRNA for the identification of dominant and active bacteria in soil samples. The results of this analysis identified bacteria such as Williamsia spp. and Gordonia spp. that degrade other types of pollutants. This analysis did not identify a predominance of Rhodococcus or Ralstonia spp., or other bacteria that have been shown to degrade DDTr. To identify ecologically relevant members of the bacterial communities in DDTr-contaminated soils, and potentially important metabolic pathways, identification of ring-hydroxylating dioxygenase (RHD) genes was performed. PCR and restriction fragment length polymorphism (RFLP) analysis were employed together with phylogenetic analyses. The results showed that the RHD genes identified, clustered separately to those genes previously characterised from cultivated bacteria. Among these genes, one phylogenetic group was most closely related to the dioxygenase genes from Ralstonia eutropha H850, which is potent PCB-degrading bacterium that possesses a dioxygenase with a wide substrate range for many types of heavily chlorinated, PCB congeners. The identification of a predominance of genes with similarity to phenyl-propionate dioxygenases has been not been recognised previously in soil studies.
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Forns, i. Guzman Joan 1981. "Social and environmental determinants of neuropsychological development from birth to preadolescence." Doctoral thesis, Universitat Pompeu Fabra, 2012. http://hdl.handle.net/10803/96193.

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Introduction Neuropsychological development is a genetically guided process which is continuously modified by socio-environmental factors. This thesis aimed to study the main socio-environmental determinants of neuropsychological development in different time-periods, such in the first two years of life, during preschool, and during preadolescence. This thesis also aimed to summarize the work done in environmental epidemiology on neuropsychological development in a novel conceptual framework. Methods This thesis is based on the data of the INMA (Infancia y Medio Ambiente) Project. The main objective of this project is to evaluate the impact of environmental exposures in children’s health in 7 population-based birth cohorts in different regions of Spain. The neuropsychological development of approximate total of 2,650 children was assessed at different time-periods following the same protocols. Results (1) Maternal cognitive capacities were positively related with child cognitive development early in life in more disadvantaged occupational social classes. (2) The levels of child cortisol were not related to child neuropsychological development during the second year of life. (3) Higher levels of long-chain polyunsaturated fatty acids in colostrum due to prolonged periods of breastfeeding improved early neuropsychological development of children, in particular in those children exposed to maternal smoking during pregnancy. (4) Prenatal exposure to PCBs (specially for PCB congener 153) impacted negatively on psychomotor development during the second year in life and on general neuropsychological development at the age of 4 years. (5) Postnatal exposure to organochlorine compounds was associated with a delay in reaction time (speed processing) during the preadolescent period. (6) The conceptual framework proposed will improve the quality of research in this area. Conclusions Social and cultural determinants such as maternal intelligence, educational level or occupational social class, are configuring the proximal environment in which a child develops and determine their neuropsychological development. Current levels of some organochlorine compounds, particularly polychlorinated byphenils, measured in blood samples (from umbilical cord, mothers, or children) are impairing on neuropsychological development in the general population.
Introducció El desenvolupament neuropsicològic infantil és un procés guiat genèticament, el qual és contínuament influenciat per factors socials i ambientals. L’objectiu d’aquesta tesis fou l’estudi dels principals determinants socio-ambientals del desenvolupament neuropsicològic infantil en diferents períodes de temps. Aquesta tesis també té l’objectiu de resumir en un marc conceptual els diferents components del desenvolupament neuropsicològic pel seu ús en estudis d’epidemiologia ambiental. Mètodes Aquesta tesis està basada en dades del projecte INMA (Infancia y Medio Ambiente). El principal objectiu d’aquest projecte és avaluar l’impacte de les exposicions ambientals en la salud infantil en 7 cohorts de població establides en diferents regions d’Espanya. Dintre del marc d’aquest projecte, s’ha avaluat el desenvolupament neuropsicològic d’aproximadament 2.650 nens en diferents moments, seguint els mateixos protocols. Resultats (1) Les capacitats cognitives maternes estan positivament relacionades amb el desenvolupament cognitiu infantil en les primeres etapes, en les classes socials ocupacionals menys afavorides. (2) Els nivells de cortisol infantil no mostren associació amb el desenvolupament neuropsicològic durant el segon any de vida. (3) Nivells elevats d’àcids grassos poliinsaturats de cadena llarga en conjunció amb períodes prolongats de lactancia materna afavoreixen el desenvolupament neuropsicològic a les primeres etapes, especialment en aquells nens de mares fumadores durant l’embaràs. (4) L’exposició prenatal a PCBs (espcialment, al congener 153) impacta negativament en el desenvolupament psicomotor infantil durant el segon any de vida i en el desenvolupament neuropsicològic general als 4 anys d’edat. (5) L’exposició postnatal a compostos organocloroats està associada a una capacitat de reacció (velocitat de processament) més alentida en etapes preadolescents. (6) L’ús del marc conceptual propossat tesis afavorirà la qualitat de l’investigació en aquesta àrea. Conclussions Els determinants socials, com l’intel•ligència materna, el nivell educatiu o la classe social basada en l’ocupació, configuren l’entorn més proper del nen i determinen el seu desenvolupament neuropsicològic. Els nivells actuals de certs compostos organoclorats, especialment els bifenils policlorinats, mesurats en mostres de sang (de cordó umbilical, mares o nens) mostren efectes negatius sobre el desenvolupament neuropsicològic en la població general.
Introducción El desarrollo neuropsicológico infantil es un proceso guiado genéticamente, el cual está contínuamente influenciado por factores sociales y ambientales. El objetivo de esta tesis fue estudiar los principales determinantes socio-ambientales del desarrollo neuropsicológico infantil en diferentes periodos de tiempo. Esta tesis también tenía como objetivo resumir en un marco conceptual el trabajo hecho en epidemiología ambiental en el estudio del desarrollo neuropsicológico infantil. Métodos Esta tesis está basada en datos del proyecto INMA (Infancia y Medio Ambiente). El principal objetivo de esto proyecto es evaluar el impacto de las exposiciones ambientales en la salud infantil en 7 cohortes de población establecidas en diferentes regiones de España. El desarrollo neuropsicológico de aproximadamente 2.650 niños ha sido evaluado en diferentes momentos siguiendo los mismos protocolos. Resultados (1) Las capacidades cognitivas maternas están positivamente relacionadas con el desarrollo cognitivo infantil en edades tempranas en las clases sociales ocupacionales menos aventajadas. (2) Los niveles de cortisol en el niño no se asocian con el desarrollo neuropsicológico durante el segundo año de vida. (3) Niveles altos de ácidos grasos poliinsaturados de cadena larga debido a periodos largos de lactancia materna mejoraron el desarrollo neuropsicológico a edades tempranas, especialmente en esos niños cuyas madres fumaron durante el embarazo. (4) La exposición prenatal a PCBs (espcialmente para el congener 153) impacta negativamente en el desarrollo psicomotor durante el segundo año de vida y en desarrollo neuropsicológico general a la edad de 4 años. (5) La exposición postnatal a compuestos organoclorados está asociado con una peor capacidad de tiempo de reacción (velocidad de procesamiento) durante la preadolescencia. (6) El marco conceptual propuesto mejorará la calidad de la investigación en esta área. Conclusiones Los determinantes sociales tales como inteligencia maternal, nivel educativo o clase social basada en la ocupación, configuran el entorno más cercano en el cual el niño se desarrolla y determinan su desarrollo neuropsicológico. Los niveles actuales de ciertos compuestos organoclorados, especialmente los bifeniles policlorinados, medidos en sangre (de cordón umbilical, madre, o niño) tienen efectos negativos sobre el desarrollo neuropsicológico de la población general.
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Sia, Zih-Fong, and 夏梓峰. "A theoretical study on the photodissociation of cis-dichloroethylene, trans-dichloroethylene, and 1,1-dichloroethylene." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/28812713616832986300.

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碩士
國立東華大學
化學系
98
The photodissociations of cis-, trans-, and 1,1-dichloroethylenes at 248nm, 235nm, 214nm, and 193nm are investigated by theoretical methods. The dissociation paths on the adiabatic ground state potential energy surface of C2H2Cl2 are characterized via B3LYP/cc-pVTZ , and CASSCF/cc-pVTZ calculations, with the energies further refined at the level of CCSD(T)/cc-pVTZ. The rate constants at 248nm, 235nm, 214nm, and 193nm for each reaction path are calculated according to RRKM and variational RRKM theory, the energy partitions in products are estimated. The vertical and adiabatic energies of low-lying excited electronic states are calculated at CIS, TD-DFT, and MRDCI levels; the absorption spectra are also simulated.
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Lin, Chung-Hsiang, and 林中祥. "Near UV/TiO2 Photocatalytic Decomposition of Dichloroethylene." Thesis, 1998. http://ndltd.ncl.edu.tw/handle/85016213402848712016.

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碩士
國立中興大學
環境工程學系
86
The photocatalytic decomposition of dichloroethylene was investigated by near ultraviolet light illuminatedtitanium dioxide . The purpose of this investigation was to understand the feasibility of photocatalytic decomposition of dichloroethylene. The effects of reaction parameters on heterogeneous photocatalytic reaction were also studied. The reaction parameters included dichloroethylene concentration , relative humidity , retention time and light intensity . In addition, the reaction kinetic was discussed. The Langmuir- Hinshelwood kinetic equation was commonly used to rationalize the reaction kinetric of titanium dioxide heterogeneous photocatalytic reaction.
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Lin, Wen-Chang, and 林文章. "A Study on Dichloroethylene Decomposition by Using A Radio- Frequency Plasma System." Thesis, 1994. http://ndltd.ncl.edu.tw/handle/06727370763806162689.

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碩士
國立成功大學
環境工程研究所
82
In this study, a radio-frequency (RF) plasma system was used to decompose the dichloroethylene (DCE) contained gas. The analyses of the reactants and final products were conducted by using a FTIR (Fourier Transform Infared Spectroscopy). Then, the effect of plasma operational-parameters for DCE decomposition evaluated. In addition, the possible reaction pathways were built up and discussed. As the equivalence ratio (Φ) between 0.69 and 1.8, the DCE decomposition efficiency was decreased by increasing a Φ value. While, when the range of Φ values were between 1.8 and 3.0, the DCE decomposition efficiency was higher by a Φ value. This result indicated that the polymerization process prevailed as the Φ value 1.8. In the condition of higher operational power wattage (OPW) was found to have higher DCE decomposition efficiency. But more soot formation were also found in the condition of higher OPW. The DCE decomposition efficiency was also affected significantly by the DCE feeding-concentration. Higher DCE feeding-concentration will decrease its decomposition efficiency. In this study , four final products- H2O, HCl, CO2 and CO had the highest effluent concentration (mole fraction between 1％∼ and 9％). The effluent concentration of C2H2 (0.5％∼7％) and C2HCl3 (0.5％∼1.4％) were the next highest. Beside the reactants -DCE and O2, the remaining final products -CCl4, CHCl3, C2Cl4, COCl2 and CH2ClCOCl were also detected. Both of CO2 concentration and conversion factor [CO2]+[CO]/ [DCE] were increased by increasing the DCE decomposition efficiency . At the conditions of power input between 20 and 40 watts, a Φ value at 0.82 and DCE feeding-concentration at 5.5％, the 99.9％ of DCE decomposition efficiency and 42.9％ of [CO2]+[CO]/[DCE] were obtained without soot formation.
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Timmins, Brian. "Aerobic cometabolism of trichloroethylene and cis-dichloroethylene in propane-fed microcosms from the McClellan Air Force Base." Thesis, 2001. http://hdl.handle.net/1957/29032.

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This thesis focused on using microcosms to better understand the aerobic cometabolic processes of TCE and cis-DCE transformation that occurred during a Cometabolic Air Sparging (CAS) demonstration at McClellan Air Force Base. The microcosms were created with groundwater and aquifer materials from the demonstration site. Concentrations of compounds in the microcosms were maintained to mimic conditions where the demonstration was performed. Propane was used as the primary substrate to stimulate indigenous propane-utilizers present in the McClellan subsurface. The microcosms were used to test the potential of the propane-utilizers to transform the CAHs of interest, and determine their nutrient requirements while transforming these compounds. Vadose zone microcosms were also created and used to compare the cometabolic processes and nutrient requirements of the propane-utilizers under these different conditions. After the addition of propane a ten-day lag period was observed before the propane-utilizers were stimulated in all the microcosms. The presence of CAHs and excess nitrogen did not have any effect on the lag period required to stimulate these microorganisms. Microcosms that received nitrogen amendments maintained effective transformation of TCE and c-DCE with successive additions. The rate of c-DCE transformation was observed to be faster than TCE transformation. Complete removal of the CAHs occurred in these microcosms. No other nutrients, such as phosphorous, were observed to cause any nutrient limitations. However, the microcosms that only had limited amounts of nitrogen present were only able to maintain transformation ability for a short time. Propane utilization rates gradually decreased with each addition, and CAH transformation eventually ceased. This was also observed during the CAS field demonstration after successive additions of propane. Ammonia gas was added to the sparge gas in the field and propane utilization and CAH transformation resumed. Ammonia gas was added to the nitrogen-limited microcosms, and like the field demonstration, propane utilization and CAH transformation resumed. Nitrogen was found to be a critical nutrient for effective cometabolism of CAHs. Nitrogen supplied either as ammonia or nitrate was required for the propane-utilizers to maintain effective rates of propane utilization and CAH transformation ability. By comparing different sets of microcosms under different conditions, estimates were made to the amount of nitrogen required by the propane-utilizers with and without CAHs transformed. The transformation of CAHs significantly increased the propane-utilizers requirements for nitrogen. A 2.0-3.8-fold increase in was observed for nitrogen consumption when CAHs were transformed, possibly resulting from toxic effects caused by the transformations. The sparge gas used at the CAS demonstration also contained ethylene at a low concentration (1% vol/vol). The microcosm experiments with this concentration of ethylene were found not to have any negative effects on CAH transformation. The propane-utilizers were also able to maintain propane utilization and CAH transformation at high CAH concentrations. The vadose zone microcosms showed that propane utilization in the vadose zone was an order of magnitude lower than what was observed in the saturated microcosms. Also bioavailable nitrogen was required to maintain propane utilization rates. However, higher CAH concentrations were found to inhibit the stimulation of the propane-utilizers under these conditions.
Graduation date: 2002
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Books on the topic "Dichloroethylene"

1

Kagaku Busshitsu Hyōka Kenkyū Kikō and Shin Enerugī Sangyō Gijutsu Sōgō Kaihatsu Kikō (Japan), eds. Cis-1,2-jikuroroechiren: Cis-1,2-dichloroethylene. Tōkyō: Seihin Hyōka Gijutsu Kiban Kikō Kagaku Busshitsu Hyōka Kenkyū Kikō, 2009.

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Kagaku Busshitsu Hyōka Kenkyū Kikō and Shin Enerugī Sangyō Gijutsu Sōgō Kaihatsu Kikō (Japan), eds. Trans-1,2-jikuroroechiren: Trans-1,2-dichloroethylene. Tōkyō: Seihin Hyōka Gijutsu Kiban Kikō Kagaku Busshitsu Hyōka Kenkyū Kikō, 2009.

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International Program on Chemical Safety. Vinylidene chloride health and safety guide. Geneva: WHO, 1989.

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Programme, United Nations Environment, International Labour Organisation, World Health Organization, and Inter-Organization Programme for the Sound Management of Chemicals., eds. 1,1-dichloroethene (vinylidene chloride). Geneva: World Health Organization, 2003.

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World Health Organization (WHO). Vinylidene Chlorade. World Health Organization, 1990.

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Organization, World Health, United Nations Environment Programme, International Labour Organisation, and International Program on Chemical Safety., eds. Vinylidene chloride. Geneva: World Health Organization, 1990.

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D, Graham D., Geological Survey (U.S.), and United States Air Force, eds. Trichloroethylene and 1,1-dichloroethylene concentrations in ground water after temporary shutdown of the Reclamation Well Field at Air Force Plant 44, Tucson, Arizona, 1999. Tucson, Ariz: U.S. Dept. of the Interior, U.S. Geological Survey, 2001.

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Seihin Hyōka Gijutsu Kiban Kikō., Kagaku Busshitsu Hyōka Kenkyū Kikō., and Shin Enerugī Sangyō Gijutsu Sōgō Kaihatsu Kikō (Japan), eds. 1, 1-jikuroroechiren (betsumei enka biniriden): Kagaku busshitsu haishutsu haaku kanri sokushinhō seirei gōbangō 1-117, CAS tōroku bangō 75-35-4 = 1, 1-dichloroethylene. Tōkyō: Seihin Hyōka Gijutsu Kiban Kikō Kagaku Busshitsu Kanri Sentā, 2007.

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Trichloroethylene and 1,1-dichloroethylene concentrations in ground water after temporary shutdown of the reclamation well field at Air Force Plant 44, Tucson, Arizona, 1999. Tucson, Ariz: U.S. Dept. of the Interior, U.S. Geological Survey, 2001.

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GDCh-Advisory Committee on Existing Chemicals of Environmental Relevance. 1,1 Dichloroethylene (Bua Report, No 33, December, 1988). Vch Pub, 1992.

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Book chapters on the topic "Dichloroethylene"

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Gooch, Jan W. "1,1-Dichloroethylene." In Encyclopedic Dictionary of Polymers, 210. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_3547.

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Ware, George W. "1,1-Dichloroethylene." In Reviews of Environmental Contamination and Toxicology, 81–91. New York, NY: Springer New York, 1988. http://dx.doi.org/10.1007/978-1-4612-3922-2_7.

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Hashidzume, Akihito. "Poly(1,1-dichloroethylene)." In Encyclopedia of Polymeric Nanomaterials, 1651–54. Berlin, Heidelberg: Springer Berlin Heidelberg, 2015. http://dx.doi.org/10.1007/978-3-642-29648-2_241.

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Hashidzume, Akihito. "Poly(1,1-dichloroethylene)." In Encyclopedia of Polymeric Nanomaterials, 1–5. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-36199-9_241-1.

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Ware, George W. "cis-1,2-Dichloroethylene." In Reviews of Environmental Contamination and Toxicology, 93–101. New York, NY: Springer New York, 1988. http://dx.doi.org/10.1007/978-1-4612-3922-2_8.

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Ware, George W. "Trans-1,2-Dichloroethylene." In Reviews of Environmental Contamination and Toxicology, 103–12. New York, NY: Springer New York, 1988. http://dx.doi.org/10.1007/978-1-4612-3922-2_9.

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Okine, Laud K. N., and Theodore E. Gram. "Tissue Distribution and Covalent Binding of [14C]1,1-Dichloroethylene in Mice: In vivo and in vitro Studies." In Biological Reactive Intermediates III, 903–10. Boston, MA: Springer US, 1986. http://dx.doi.org/10.1007/978-1-4684-5134-4_86.

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Devi, Sachin S., and Harihara M. Mehendale. "Dichloroethylene, 1,2-." In Encyclopedia of Toxicology, 9–11. Elsevier, 2005. http://dx.doi.org/10.1016/b0-12-369400-0/00315-x.

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Devi, S. S., and H. M. Mehendale. "1,2-Dichloroethylene." In Encyclopedia of Toxicology, 95–98. Elsevier, 2014. http://dx.doi.org/10.1016/b978-0-12-386454-3.00306-7.

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"1,1-Dichloroethylene." In Encyclopedic Dictionary of Polymers, 280. New York, NY: Springer New York, 2007. http://dx.doi.org/10.1007/978-0-387-30160-0_3494.

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Conference papers on the topic "Dichloroethylene"

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Marshall, Mark, Leonard Yoon, Craig Nelson, and Helen Leung. "MICROWAVE SPECTRUM AND MOLECULAR STRUCTURE OF THE ARGON-CIS-1,2-DICHLOROETHYLENE COMPLEX." In 71st International Symposium on Molecular Spectroscopy. Urbana, Illinois: University of Illinois at Urbana-Champaign, 2016. http://dx.doi.org/10.15278/isms.2016.wc02.

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Craig, Norman. "APPLICATIONS OF GROUP THEORY: INFRARED AND RAMAN SPECTRA OF THE ISOMERS OF cis- AND trans-1,2-DICHLOROETHYLENE." In 70th International Symposium on Molecular Spectroscopy. Urbana, Illinois: University of Illinois at Urbana-Champaign, 2015. http://dx.doi.org/10.15278/isms.2015.rc05.

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Hara, Junko. "Chemical Degradation of Dichloroethylenes by Pyrite." In WATER DYANMICS: 3rd International Workshop on Water Dynamics. AIP, 2006. http://dx.doi.org/10.1063/1.2207104.

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Reports on the topic "Dichloroethylene"

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McCarty, P. L., and A. M. Spormann. Mechanisms, chemistry, and kinetics of anaerobic biodegradation of cis-dichloroethylene and vinyl chloride. 1998 annual progress report. Office of Scientific and Technical Information (OSTI), June 1998. http://dx.doi.org/10.2172/13692.

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McCarty, P. L., and A. Spormann. Mechanisms, chemistry and kinetics of the anaerobic biodegradation of cis-dichloroethylene and vinyl chloride. First annual progress report, September 15, 1996--September 14, 1997. Office of Scientific and Technical Information (OSTI), January 1997. http://dx.doi.org/10.2172/13691.

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Trichloroethylene and 1,1-dichloroethylene concentrations in ground water after temporary shutdown of the reclamation well field at Air Force Plant 44, Tucson, Arizona, 1999. US Geological Survey, 2001. http://dx.doi.org/10.3133/wri014177.

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