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Use of Solvents for Pahs Extraction and Enhancement of the Pahs Bioremediation in Coal- Tar-Contaminated Soils Pak-Hing Lee Iowa State University
Iowa State University Capstones, Theses and Retrospective Theses and Dissertations Dissertations 2000 Use of solvents for PAHs extraction and enhancement of the PAHs bioremediation in coal- tar-contaminated soils Pak-Hing Lee Iowa State University Follow this and additional works at: https://lib.dr.iastate.edu/rtd Part of the Environmental Engineering Commons Recommended Citation Lee, Pak-Hing, "Use of solvents for PAHs extraction and enhancement of the PAHs bioremediation in coal-tar-contaminated soils " (2000). Retrospective Theses and Dissertations. 13912. https://lib.dr.iastate.edu/rtd/13912 This Dissertation is brought to you for free and open access by the Iowa State University Capstones, Theses and Dissertations at Iowa State University Digital Repository. It has been accepted for inclusion in Retrospective Theses and Dissertations by an authorized administrator of Iowa State University Digital Repository. For more information, please contact [email protected]. INFORMATION TO USERS This manuscript has been reproduced from the microfilm master. UMI films the text directly from the original or copy submitted. Thus, some thesis and dissertation copies are in typewriter fece, while others may be from any type of computer printer. The quality of this reproduction is dependent upon the quaiity of the copy submitted. Broken or indistinct print colored or poor quality illustrations and photographs, print bleedthrough, substeindard margins, and improper alignment can adversely affect reproduction. In the unlilcely event that the author did not send UMI a complete manuscript and there are missing pages, these will be noted. Also, if unauthorized copyright material had to be removed, a note will indicate the deletion. -
Catalytic Pyrolysis of Plastic Wastes for the Production of Liquid Fuels for Engines
Electronic Supplementary Material (ESI) for RSC Advances. This journal is © The Royal Society of Chemistry 2019 Supporting information for: Catalytic pyrolysis of plastic wastes for the production of liquid fuels for engines Supattra Budsaereechaia, Andrew J. Huntb and Yuvarat Ngernyen*a aDepartment of Chemical Engineering, Faculty of Engineering, Khon Kaen University, Khon Kaen, 40002, Thailand. E-mail:[email protected] bMaterials Chemistry Research Center, Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Khon Kaen University, Khon Kaen, 40002, Thailand Fig. S1 The process for pelletization of catalyst PS PS+bentonite PP ) t e PP+bentonite s f f o % ( LDPE e c n a t t LDPE+bentonite s i m s n HDPE a r T HDPE+bentonite Gasohol 91 Diesel 4000 3500 3000 2500 2000 1500 1000 500 Wavenumber (cm-1) Fig. S2 FTIR spectra of oil from pyrolysis of plastic waste type. Table S1 Compounds in oils (%Area) from the pyrolysis of plastic wastes as detected by GCMS analysis PS PP LDPE HDPE Gasohol 91 Diesel Compound NC C Compound NC C Compound NC C Compound NC C 1- 0 0.15 Pentane 1.13 1.29 n-Hexane 0.71 0.73 n-Hexane 0.65 0.64 Butane, 2- Octane : 0.32 Tetradecene methyl- : 2.60 Toluene 7.93 7.56 Cyclohexane 2.28 2.51 1-Hexene 1.05 1.10 1-Hexene 1.15 1.16 Pentane : 1.95 Nonane : 0.83 Ethylbenzen 15.07 11.29 Heptane, 4- 1.81 1.68 Heptane 1.26 1.35 Heptane 1.22 1.23 Butane, 2,2- Decane : 1.34 e methyl- dimethyl- : 0.47 1-Tridecene 0 0.14 2,2-Dimethyl- 0.63 0 1-Heptene 1.37 1.46 1-Heptene 1.32 1.35 Pentane, -
Title Crystallization of Stereospecific Olefin Copolymers (Special Issue on Physical Chemistry) Author(S) Sakaguchi, Fumio; Kita
Crystallization of Stereospecific Olefin Copolymers (Special Title Issue on Physical Chemistry) Author(s) Sakaguchi, Fumio; Kitamaru, Ryozo; Tsuji, Waichiro Bulletin of the Institute for Chemical Research, Kyoto Citation University (1966), 44(4): 295-315 Issue Date 1966-10-31 URL http://hdl.handle.net/2433/76134 Right Type Departmental Bulletin Paper Textversion publisher Kyoto University Crystallization of Stereospecifie Olefin Copolymers Fumio SAKAGUCHI,Ryozo KITAMARU and Waichiro TSUJI* (Tsuji Laboratory) Received August 13, 1966 The stereoregularity of isotactic poly(4-methyl-1-pentene) was characterized and isomorphism phenomena were examined for the copolymeric systems of 4-methyl-1-pentene with several olefins in order to study the crystallization phenomena in these olefin copoly- mers polymerized with stereospecific catalysts. The structural heterogeneity or the fine crystalline structure of poly(4-methyl-1-pentene) could be correlated with its molecular structure by viewing this stereoregular homopolymer as if it were a copolymer. Cocrystallization or isomorphism phenomenon was recognized for the copolymeric systems of 4-methyl-1-pentene with butene-1, pentene-1, decene-1 and 3-methyl-1-butene, while no evidence of the phenomenon was obtained for the copolymeric systems with styrene and propylene. The degree of the isomorphism of those copolymers was discussed with the informations on the crystalline phases obtained from the X-ray study, on the constitution of the copolymeric chains in the amorphous phases obtained from the viscoelastic studies and on the other thermodynamical properties of these systems. INTRODUCTION Many works have been made with regard to the homopolymerization of olefins with stereospecific catalysts, i. e. complex catalysts composed of the combination of organometallic compound and transitional metallic compound. -
Highly Efficient Olefin Isomerization Catalyzed by Metal Hydrides Derives from Dirhodium(Ii) Carboxylates and Catecholborane
HIGHLY EFFICIENT OLEFIN ISOMERIZATION CATALYZED BY METAL HYDRIDES DERIVES FROM DIRHODIUM(II) CARBOXYLATES AND CATECHOLBORANE Gene A. Devora and Michael P. DoyleL' * Department of Chemistry, Trinity University, San Antonio, Texas 78212, USA Abstract. Dirhodium(ll) tetraacetate in combination with catecholborane catalyzes the iso- merization of alkenes and dienes. Effective isomerization occurs at 80-135°C with the use of only 0.1 mol % rhodium acetate. With 2-methyl-1,5-hexadiene the disubstituted double bond is prefer- entially isomerized. In addition, hydrogen transfer hydrogenation occurs with 1,4-cyclohexadienes. The mechanism of these reactions is proposed to involve organoborane addition across a Rh-0 bond which activates the catalyst for isomerization and hydrogenation. INTRODUCTION Catalytic isomerization of alkenes is a characteristic transformation of transition metal hy- drides that often accompanies hydrogenation1 and is one of the most thoroughly studied catalytic reactions.2"4 Compounds of cobalt, nickel, palladium, platinum, rhodium, and ruthenium are effective,2 but other transition metal compounds have also been employed for catalytic isomeriza- tions.2"4 Although the nature of this transformation is dependent on the catalyst, selectivity for alkene isomerization generally favors reactions with monosubstituted ethylenes over di- and tri-sub- stituted ethylenes. In the course of our investigations of the catalytic effectiveness of dirhodium(ll) tetrakis(carboxylates) we have uncovered a useful methodology for the generation of rhodium hydride species that, as we now report, are surprisingly effective for the isomerization of alkenes as well as for hydrogen transfer hydrogenation. MATERIALS AND METHODS Reactions were performed in a round bottom flask equipped with a screw cap that was fitted with a septum for convenient withdrawal of aliquots. -
Supporting Information of Polycyclic Aromatic Hydrocarbons (Pahs) In
Supporting Information of Polycyclic aromatic hydrocarbons (PAHs) in aerosols over the central Himalayas along two south-north transects Peng Fei Chen1,5, Chao Liu Li1, Shi Chang Kang2,3*, Maheswar Rupakheti4, Arnico K Panday6, Fang Ping Yan2,5, Quan Lian Li2, Qiang Gong Zhang1,3, Jun Ming Guo1,5, Dipesh Rupakheti1,5, Wei Luo7 1Key Laboratory of Tibetan Environment Changes and Land Surface Processes, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100101, China 2State Key Laboratory of Cryospheric Science, Cold and Arid Regions Environmental and Engineering Research Institute, Lanzhou 730000, China 3Center for Excellence in Tibetan Plateau Earth Sciences, Chinese Academy of Sciences, Beijing 100085, China; 4Institute for Advanced Sustainability Studies, Potsdam 14467, Germany 5University of Chinese Academy of Sciences, Beijing 100039, China 6International Centre for Integrated Mountain Development, Kathmandu, Nepal 7State Key Lab of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China Correspondence to: S. Kang ([email protected]) Text SI-1 Sample extraction and analysis Text SI-2 Quality control Table SI-1 Percentage contribution (%) of each species to total PAHs in the atmosphere over the Himalayas. Text SI-1 Sample extraction and analysis A quarter of each filter was cut into pieces, placed into a glass tube, and immersed in 20 mL of dichloromethane (DCM) and n-hexane (1:1). The extraction was performed by sonication twice for 30 min at 27 °C. Every single sample was spiked with deuterated PAHs (naphthalene-d8, acenaphthene-d10, phenanthrene-d10, chrysene-d12, and perylene-d12) as recovery surrogates. -
September 17, 2007
Pre-Feasibility Report M/s. Neogen Chemicals Ltd. 1 1. Introduction M/s. Neogen Chemicals Ltd. is a new unit located at Plot No. Z/96/B SEZ Dahej, District: Bharuch, Gujarat. Now, the unit proposes to manufacture different type of synthetic organic dyes and pesticide products at above sited address. 2. Cost of Project Cost of existing project is 55 crore &, out of which 5 crore will be used for Environment Management System. 3. Production Capacity Production capacity is prescribe below: List of Products Sr. Name of Products Quantity No. (MT/Year) (MT/month) 1 Bromination and Chlorination of Alcohols 1.1. Ethyl Bromide 3500 291.67 1.2. n-Propyl Bromide 1.3. Iso Propyl Bromide 1.4. n-Butyl Bromide 1.5. Iso Butyl Bromide 1.6. Sec-Butyl Bromide 1.7. n-Hexyl Bromide 1.8. n-Heptyl Bromide 1.9. n-Octyl Bromide 1.10. n-Decyl Bromide 1.11. Lauryl Bromide 1.12. Cetyl Bromide 1.13. Myristyl Bromide 1.14. Stearyl Bromide 1.15. 1,2 Dibromo Ethane 1.16. 1,3 Dibromo Propane 1.17. 1,4 Dibromo Butane 1.18. 1,5 Dibromo pentane M/s. Neogen Chemicals Ltd. 2 Sr. Name of Products Quantity No. (MT/Year) (MT/month) 1.19. 1,6 Dibromo Hexane 1.20. 1 Chloro 2 Ethyl Hexane 1.21. 6 Chloro 1 Hexanol 1.22. 3 Chloro Propanol 1.23. 1,6 Dichloro Hexane 1.24. Cyclo Propyl Methyl Bromide 1.25. Cyclo Pentyl Bromide 1.26. Cyclo Pentyl Chloride 2. Bromination of Organic Acids and Esterification thereof 2.1. -
Effect of Epoxide Content on the Vulcanizate Structure of Silica-Filled Epoxidized Natural Rubber (ENR) Compounds
polymers Article Effect of Epoxide Content on the Vulcanizate Structure of Silica-Filled Epoxidized Natural Rubber (ENR) Compounds Gyeongchan Ryu 1, Donghyuk Kim 1, Sanghoon Song 1, Kiwon Hwang 1, Byungkyu Ahn 2 and Wonho Kim 1,* 1 School of Chemical Engineering, Pusan National University, Busan 46241, Korea; [email protected] (G.R.); [email protected] (D.K.); [email protected] (S.S.); [email protected] (K.H.) 2 Hankook Tire & Technology Co., Ltd., R&D Center, 50 Yuseong-daero 935 beon-gil, Yuseong-gu, Daejeon 34127, Korea; [email protected] * Correspondence: [email protected]; Tel.: +82-51-510-3190 Abstract: The demand for truck–bus radial (TBR) tires with enhanced fuel efficiency has grown in recent years. Many studies have investigated silica-filled natural rubber (NR) compounds to address these needs. However, silica-filled compounds offer inferior abrasion resistance compared to carbon black-filled compounds. Further, the use of NR as a base rubber can hinder silanization and coupling reactions due to interference by proteins and lipids. Improved silica dispersion be achieved without the use of a silane coupling agent by introducing epoxide groups to NR, which serve as silica-affinitive functional groups. Furthermore, the coupling reaction can be promoted by facilitating chemical interaction between the hydroxyl group of silica and the added epoxide groups. Thus, this study evaluated the properties of commercialized NR, ENR-25, and ENR-50 compounds with or without an added silane coupling agent, and the filler–rubber interaction was quantitatively calculated using vulcanizate structure analysis. The increased epoxide content, when the silane coupling agent was not used, improved silica dispersion, abrasion resistance, fuel efficiency, and wet Citation: Ryu, G.; Kim, D.; Song, S.; grip. -
Organic Chemistry Name Formula Isomers Methane CH 1 Ethane C H
Organic Chemistry Organic chemistry is the chemistry of carbon. The simplest carbon molecules are compounds of just carbon and hydrogen, hydrocarbons. We name the compounds based on the length of the longest carbon chain. We then add prefixes and suffixes to describe the types of bonds and any add-ons the molecule has. When the molecule has just single bonds we use the -ane suffix. Name Formula Isomers Methane CH4 1 Ethane C2H6 1 Propane C3H8 1 Butane C4H10 2 Pentane C5H12 3 Hexane C6H14 5 Heptane C7H16 9 Octane C8H18 18 Nonane C9H20 35 Decane C10H22 75 Isomers are compounds that have the same formula but different bonding. isobutane n-butane 1 Naming Alkanes Hydrocarbons are always named based on the longest carbon chain. When an alkane is a substituent group they are named using the -yl ending instead of the -ane ending. So, -CH3 would be a methyl group. The substituent groups are named by numbering the carbons on the longest chain so that the first branching gets the lowest number possible. The substituents are listed alphabetically with out regard to the number prefixes that might be used. 3-methylhexane 1 2 3 4 5 6 6 5 4 3 2 1 Alkenes and Alkynes When a hydrocarbon has a double bond we replace the -ane ending with -ene. When the hydrocarbon has more than three carbon the position of the double bond must be specified with a number. 1-butene 2-butene Hydrocarbons with triple bonds are named basically the same, we replace the -ane ending with -yne. -
' United "States Patent Office
Patented on. 20, 1.942 I . 2,299,411 ' UNITED "STATES PATENT OFFICE CATALYZED HYDROBROMINATION OF UN SATURATED ORGANIC COMPOUNDS Fredericlr Rust and William E. Vaughan, ' Berkeley, Calif., assignors. to Shell Develop ment Company, San Francisco, Calif., a corpo ration of Delaware No Drawing. 4 Application August 25, 1941, Serial No. 408,212 - 9'Claims. (01. 260-663) ' This invention relates to an improved process for the hydrobromination of unsaturated organic hydes and metal alkyls which tend to initiate I compounds, and more particularly to improve the reaction chains. v ments in the method of controlling the addition It is known that the presence of peroxide: orv of hydrogen bromide to unsymmetrical organic of peroxide-forming compounds in unsaturated compounds containing at least one ole?nic or organic compounds, e. g. unsaturated hydrocar acetylenic linkage to produce addition products bons, is undesirable. For example, organic per of a predetermined character. oxides, when present even in relatively small con It is known that hydrogen halides may be centrations, tend to catalyze the polymerization of a large number of unsaturated hydrocarbons, . added to unsaturated hydrocarbons and to var 10 ious unsaturated derivatives thereof. In fact, and particularly diole?ns. As to the “abnormal” in 1870 Markowniko? stated that “if an addition ofhydrogen bromide to unsaturates by metrical hydrocarbon combines with a halogen effecting the reaction under the deliberate in acid, the halogen adds to the carbon atom with ?uence, of light, and particularly of ultra-violet fewer hydrogen atoms, i. e. to the carbon atom radiations having wave-lengths of below about which is more'under the in?uence of other car' 2900 to 3000 Angstrom units, such processes ne bon atoms.” The same investigator further de cessitate the use of special equipment, such as termined that when a hydrogen halide is added reaction vessels provided with or containing to a halogenated unsaturated compound such as lamps made of quartz Or other suitable mate rials, e. -
Chemical Compatibility Chart X
Chemical Compatibility Chart Below is a chart adapted from the CRC Laboratory Handbook, which groups various chemicals in to 23 groups with examples and incompatible chemical groups. This chart is by no means complete but it will aid in making decisions about storage. For more complete information please refer to the MSDS for the specific chemical. Examples of each group can be found on the next pages. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 Monomers Polymerizable Esters Alcohols, Glycols, Glycol Ether Amines and Alkanolamines Halogenated Compounds Aldehydes Acetaldehyde Saturated Hydrocar Aromatic Hydrocarbons Acid Anhydrides Alkylene Oxides Inorganic Acids Petrolium Oils Organic Acids Cyanohydrins Phosphorus Ammonia Group Halogens Ketones Caustics Phenols Nitriles Olefins Ethers Number/Chemical Esters Type bons Inorganic 1 x x x x x x x x x x x x x x x x x Acids 2 Organic Acids x x x x x x x x x x 3 Caustics x x x x x x x x x x x x x Amines and 4 x x x x x x x x x x x x Alkanolamines Halogenated 5 x x x x x x Compounds Alcohols, 6 Glycols, Glycol x x x x x x Ether Aldehydes 7 x x x x x x x x x x x x Acetaldehyde 8 Ketones x x x x x x Saturated 9 x Hydrocarbons Aromatic 10 x x Hydrocarbons 11 Olefins x x x 12 Petrolium Oils x 13 Esters x x x x x Monomers 14 Polymerizable x x x x x x x x x x x x Esters 15 Phenols x x x x x x x Alkylene 16 x x x x x x x x x x x x Oxides 17 Cyanohydrins x x x x x x x x x 18 Nitriles x x x x x x 19 Ammonia x x x x x x x x x x x 20 Halogens x x x x x x x x x x x x x x 21 Ethers x x x 22 Phosphorus x x x x Acid 23 x x x x x x x x x x Anhydrides X - Indicates chemicals that are incompatible and should not be stored together. -
Stability Studies of Selected Polycyclic Aromatic Hydrocarbons in Different Organic Solvents and Identification of Their Transformation Products
Polish J. of Environ. Stud. Vol. 17, No. 1 (2008), 17-24 Original Research Stability Studies of Selected Polycyclic Aromatic Hydrocarbons in Different Organic Solvents and Identification of Their Transformation Products D. Dąbrowska1, A. Kot-Wasik2, J. Namieśnik*2 1Polish geological institute, Central Chemical laboratory, warsaw, Poland 2Department of Analytical Chemistry, gdansk university of technology, ul. Narutowicza 11/12, 80-892 gdańsk, Poland Received: May 7, 2007 Accepted: October 1, 2007 Abstract one of the problems in an hPlC laboratory is the preservation of samples and extracts prior to analysis without any changes. It has been found that degradation processes cannot be eliminated entirely, but they can be slowed down considerably. Photodegradation kinetics of fluorene, anthracene and benzo(a)pyrene were studied in various organic solvents. Solvents known as good media to store PAhs for a long time were selected with respect to avoid degradation. in the case of fluorene, 9-fluorenone and 9-hydroxyfluorene were detected as main photoproducts. Formation of anthraquinone and 1,8-dihydroxyanthraquinone during the degradation of anthracene was observed. Benzo(a)pyrene-4,5-dihydrodiol and one of the isomers of hydroxy-BaP-dione as products of benzo(a)pyrene photodegradation have been identified. Keywords: polycyclic aromatic hydrocarbons, photodegradation, degradation products, sample stability Introduction 4 or more rings and their metabolites, have a variety of mutagenic and carcinogenic effects on microorganisms, Polycyclic aromatic hydrocarbons (PAhs) are ubiq- plants and animals, and are classified as compounds with uitous contaminants originating from natural and anthro- significant human health risks [6]. pogenic pyrolysis of organic matter such as forest fires, In the environment, primary removal processes of low automobile exhaust, coal and oil refining processes.t heir molecular weight PAhs are microbial degradation and abundance and persistence in several polluted environ- evaporation. -
INVESTIGATION of POLYCYCLIC AROMATIC HYDROCARBONS (Pahs) on DRY FLUE GAS DESULFURIZATION (FGD) BY-PRODUCTS
INVESTIGATION OF POLYCYCLIC AROMATIC HYDROCARBONS (PAHs) ON DRY FLUE GAS DESULFURIZATION (FGD) BY-PRODUCTS DISSERTATION Presented in Partial Fulfillment of the Requirements for the Degree Doctor of Philosophy in the Graduate School of The Ohio State University By Ping Sun, M.S. ***** The Ohio State University 2004 Dissertation Committee: Approved by Professor Linda Weavers, Adviser Professor Harold Walker Professor Patrick Hatcher Adviser Professor Yu-Ping Chin Civil Engineering Graduate Program ABSTRACT The primary goal of this research was to examine polycyclic aromatic hydrocarbons (PAHs) on dry FGD by-products to determine environmentally safe reuse options of this material. Due to the lack of information on the analytical procedures for measuring PAHs on FGD by-products, our initial work focused on analytical method development. Comparison of the traditional Soxhlet extraction, automatic Soxhlet extraction, and ultrasonic extraction was conducted to optimize the extraction of PAHs from lime spray dryer (LSD) ash (a common dry FGD by-product). Due to the short extraction time, ultrasonic extraction was further optimized by testing different organic solvents. Ultrasonic extraction with toluene as the solvent turned out to be a fast and efficient method to extract PAHs from LSD ash. The possible reactions of PAHs under standard ultrasonic extraction conditions were then studied to address concern over the possible degradation of PAHs by ultrasound. By sonicating model PAHs including naphthalene, phenanthrene and pyrene in organic solutions, extraction parameters including solvent type, solute concentration, and sonication time on reactions of PAHs were examined. A hexane: acetone (1:1 V/V) ii mixture resulted in less PAH degradation than a dichloromethane (DCM): acetone (1:1 V/V) mixture.