INTERFACIAL APPLICATIONS IN ENVIRONMENTAL ENGINEERING - CHAPTER 13 potx
INTERFACIAL APPLICATIONS IN ENVIRONMENTAL ENGINEERING - CHAPTER 13 potx
... safety and environmental ap-proach is now called for, one that incorporates advanced “green” processing tech-nology as a means of canceling any negative environmental impact without sti-fling the ... hasbeen viewed in terms of an E1 elimination mechanism, where the chlorine com-ponent interacts with the catalyst with electron withdrawal, weakening the C–Cl bond and inducing intermediate carbocation ... C–X(carbon–halogen) bonds can be represented byR–X ϩ reducing agent → R–H ϩ HXNo dioxins are formed in a reducing environment, and any dioxin-containingwaste can be detoxified, with recovery of valuable...
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INTERFACIAL APPLICATIONS IN ENVIRONMENTAL ENGINEERING - CHAPTER 2 potx
... mixed in the vicinity of the catalyst sample in theinfrared reactor cell, as shown in the inset of Figure 1. One-hundred-mg catalystswere pressed into three to four thin disks, each weighing ... species during the step-and-pulse switch of the NO, O2,C3H6reactant flows during the SCR reaction over Cu-ZSM-5.II. EXPERIMENTALA. Catalyst PreparationThe overexchanged Cu-ZSM- 5-5 23 was ... reflects an increase in theconversion of NO and C3H6reactants; the latter indicates an increase in productformation.To gain an insight into the SCR reaction, the IR spectra taken during eachstep...
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INTERFACIAL APPLICATIONS IN ENVIRONMENTAL ENGINEERING - CHAPTER 1 pot
... (4) wasteminimization/recycle. Each contribution has either a theoretical significance orpractical utility or both. Interfacial Applications in Environmental Engineer-ing is an invaluable resource ... Chemical Engineering, University of Cas-tilla–La Mancha, Ciudad Real, SpainC. H. Yang College of Chemistry and Chemical Engineering, University ofPetroleum, Dongying, Shandong Province, People’s ... calculations to gain an insight intothe architecture of the surface active sites. Kang and Chuang (Chapter 2) focuson selective catalytic reduction (SCR) using Cu-ZSM-5, employing in situ FTIRto...
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INTERFACIAL APPLICATIONS IN ENVIRONMENTAL ENGINEERING - CHAPTER 3 doc
... role in electron transfer from theelectron-accepting to the electron-donating sites at the catalytic surface. Ac-cording to Bahranowski et al. [48], single doping of Al-PILC with copper intro-duced ... species in Cu-MFI-based catalysts resulted in a substan-tial increase in propane conversion as well selectivity to CO2. This fact wouldexplain the decided decrease in NO conversion with increasing ... observed that the increase in Cu loading in the PILC-based catalysts resulted in an increase in CuO aggregates (Table 3). In a study of the reducibility andcatalytic activity in propane oxidation...
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INTERFACIAL APPLICATIONS IN ENVIRONMENTAL ENGINEERING - CHAPTER 4 pdf
... showsthe majority/minority spin configurations. The HOMO is the Π bonding in the majorityspin and the LUMO is the Π antibonding in the minority spin. (b) SO2(singlet, C2v). (c)SO3(singlet, C3v).TMCopyright ... most stableconfigurations involved dicoordination binding through both η2-S,O and η2-O,Ostructures on the Pt(111) surface but no flat-lying configurations.Our first-principles DFT calculations ... performed a DFT calculation to examine the adsorp-tion of SO2on Cu(100) and showed an increasing bonding energy in the orderof η1-S Ͻ η2-S,O Ͻ η2-O,O Ͻ η3-S,O,O. To make comparison with...
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INTERFACIAL APPLICATIONS IN ENVIRONMENTAL ENGINEERING - CHAPTER 5 pdf
... the results obtained from on-line pulse-reactionchromatography. Ten grams of thiophene/n-heptane or the gasoline distillate waspumped into the reactor within 1 min. Sulfides in the liquid product ... Because of the com-plexity of FCC reactions, we cannot determine exactly whether it is via adsorbingand cracking sulfides in the feed or via adsorbing and cracking those in the gaso-line produced. ... of the distil-late at over 140°C is more than 1600 µg/g. Obviously, sulfur content increaseswith the boiling point of distillate and concentrates in the high-boiling-point dis-tillates.Because...
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INTERFACIAL APPLICATIONS IN ENVIRONMENTAL ENGINEERING - CHAPTER 6 docx
... solution using Na-Y was investi-gated using a fixed-zeolite-bed configuration. The breakthrough curves for fourselected HM are shown in Figure 5 under identical operating conditions. Break-through ... exchangewith cations in external solution. An increase in exchange temperature enhancedHM removal by reducing the solvation coating and kinetic diameter of the in- going HM cation, facilitating exchange ... a high-surface-area microporous structure. The Yzeolite employed in this study is characterized [29] by an open framework con-sisting of two independent, though interconnecting, three-dimensional...
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INTERFACIAL APPLICATIONS IN ENVIRONMENTAL ENGINEERING - CHAPTER 8 doc
... [4,7]. In the experiments, titration ex-periments and computer modeling with MINTEQA2 indicate that the pH de-creases as Thio-Redis initially titrated into aqueous divalent heavy metal solu-tions. ... use of HMP-2000 oc-curred in December 1999, when the Guide Corporation (an auto parts manufactur-ing plant in Anderson, Indiana) accidentally released over 1.5 million gallons ofcontaminated ... ofcontaminated wastewater laced with HMP-2000 into the city’s wastewater sys-tem. Unable to control the chemical contaminate, the HMP-2000-laced wastewa-ter was discharged into local state waters [11]....
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INTERFACIAL APPLICATIONS IN ENVIRONMENTAL ENGINEERING - CHAPTER 9 ppsx
... strong inhibitory effect of water content can be interpreted as water-aidedinterruption of inter- and intramolecular contacts in the soil upon oil sorption.An increase in Kdwhen increasing the ... taking into account the diversity in the environmental conditions and in thesources and history of the residuals.To evaluate the sensitivity of the model to variations in the main factors in- volved ... chemicalscould be modeled as a combined adsorption-partitioning process. In this case, theresults confirmed the expectation that partitioning is an increasingly dominatingcontribution to overall sorption...
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INTERFACIAL APPLICATIONS IN ENVIRONMENTAL ENGINEERING - CHAPTER 10 pptx
... screening tests are positive in terms of flagging the potential of cata-lytically generated carbon nanofibers for application in continuous-flow watertreatment. The pressure required to maintain ... 36:731–741, 1981.12. F Caturla, JM Martin-Martinez, M Molina-Sobio, F Rodriguez-Reinoso, R Torre-grosa. J Colloid Interface Sci 124:528–534, 1988. 13. W Fritz, W Merk, E Schluender. Chem Eng ... The demineralization agent can also in uence the ad-sorption characteristics of the carbon by functionalizing the surface. Park andco-workers [39], studying the removal of low-molecular-weight...
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