Category:Annual Meeting

August 5th, 2014

Student Travel Grants for AIChE Annual Student Conference

By admin | Comments (0)
Travel Grants

This year, three $400 travel awards for the 2014 AIChE Annual Student Conference in Atlanta will be given to qualifying undergraduate students. Learn more details here and apply.

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January 6th, 2014

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Stephanie Lam

BUY CLOMID NO PRESCRIPTION, Stephanie Lam of North Carolina State University talks about her poster on "Mechanism of Foam Stabilization by Biopolymers" at the 2013 AIChE Annual Meeting in San Francisco.

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December 18th, 2013

DESYREL FOR SALE

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On Location DESYREL FOR SALE, As part of the "Osmotic Processes for the 21st Century" sessions at the AIChE 2013 Annual Meeting, Dr. DESYREL coupon, Jeffrey McCutcheon of UConn's Center for Environmental Sciences and Engineering made a presentation on nanofiber-supported thin film composite (TFC) membranes. The crux of the talk was that conventional asymmetrical membrane structures cause severe mass transfer limitations, DESYREL no rx, Buy cheap DESYREL, and that future membrane designs needed to focus on mimicking the functionality and specificity of biological membrane systems.

The "Now"


Most membrane operate in a "pressure" mode, kjøpe DESYREL på nett, köpa DESYREL online, Buy generic DESYREL, where the mass transfer driving force is a supplied pressure differential, sometimes at hundreds of psi, DESYREL description. Japan, craiglist, ebay, overseas, paypal, As such, the design of membranes has to account for this, buy DESYREL without prescription, Buy DESYREL no prescription, and a composite structure of an active membrane layer in conjunction with a porous support structure has evolved. This traditional structure has an inherent flaw, in that the support structure is itself a strong barrier to mass transfer of the permeating species.

Tweak or toss?


In designing a new membrane system, DESYREL online cod, Low dose DESYREL, the first question is whether the approach should be to modify an existing design or concept, or toss tradition aside and design anew, DESYREL recreational. The advantages of a radically new design include the ability to tune the structure and chemistry for specific applications, as well as the possibility of using a variety of special and "selective" materials and polymer processing methods, DESYREL FOR SALE. DESYREL from canadian pharmacy, The disadvantages are the requirement for development of new interfacial polymerization techniques, along with the fact that many novel formation approaches may not be scaleable and/or could be expensive, DESYREL brand name. Is DESYREL addictive, One of the primary goals for a new design was the creation of support layers that are thin, highly porous, online buying DESYREL hcl, Herbal DESYREL, non-tortuous, and hydrophilic, taking DESYREL. DESYREL dosage, Electrospun nanofibers fit the bill.


Electrospinning nanofibers


The goal is to build a radically different and tunable supporting material for thin film composite membranes that combines the benefits of hydrophilicity with high porosity, DESYREL price, Is DESYREL safe, but without sacrificing scaleability. DESYREL FOR SALE, Electrospinning can be used to produce submicron sized fibers in nonwoven mats that exhibit high porosity and low tortuosity. Polymers that can be electrospun in this way include polyacrylonitrile (PAN), cellulose acetate (CA), and nylon. Spun onto polyethyleneterepthalate, about DESYREL, DESYREL reviews, these polymers can be "tuned" with respect to fiber size and morphology, thus allowing customization of performance and selectivity unknown with existing film technologies, DESYREL steet value. DESYREL trusted pharmacy reviews,

Interfacial polymerization



In order to complete the TFC membrane, a process called interfacial polymerization is utilized. Trimesoyl Chloride ( 1,3,5-Benzenetricarboxylic acid chloride) and 1,3-benzene diamine are co-polymerized in contact with the nanofiber mat, and in addition to the co-polymerization, the free (third) acid chloride can react with the nanofibers to form the amide creating an interfacially formed polyamide.

Preliminary indications


Nanofiber TFC membranes are a unique platform for osmotic processes, particularly those of the low pressure variety such as forward osmosis and osmotic dilution. The nanocomposite-supported TFC membranes produced in this research effort exhibit two to three times higher water flux than standard RO membranes, DESYREL FOR SALE.  These membranes can also be made  pressure tolerant for high pressure RO applications.

Jeffrey R. McCutcheonFor more information on the exciting new directions that membrane designs are taking, contact Dr. Jeffrey McCutcheon at the University of Connecticut.

Images: Dr. Jeffrey McCutcheon

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December 10th, 2013

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plasma

On Location BUY TAMIFLU NO PRESCRIPTION, Metal sulfides are currently under intense study as alternates to silicon and germanium semi-conductor materials. Metal sulfide nanocrystals (e.g., PbS, CdS, etc.) have typically been synthesized in hot solvent-solution phase systems that bring with them a host of quality and productivity issues. Generic TAMIFLU, Current work at the University of Minnesota seeks to avoid these problems by utilizing a non-thermal plasma reactor and deposition system for nanocrystal production.

Prior process and issues


Using a hot solvent systems, order TAMIFLU online overnight delivery no prescription, Buy cheap TAMIFLU no rx, reactants are injected into the solvent where the nanocrystals form. Once formed, TAMIFLU pharmacy, Where can i buy TAMIFLU online, the nanocrystals must be cast onto a surface. The solvent system is prone to inclusion of impurities in the crystals, TAMIFLU results, TAMIFLU price, coupon, and it is difficult to scale up to achieve high through-put. In addition, the solvent eventually requires disposal as a hazardous waste, TAMIFLU from canada, TAMIFLU brand name, thus adding to the cost and inefficiency overall. In preliminary work at the University of Minnesota, creation of metal sulfide nanocrystals using a non-thermal plasma process, with subsequent crystal deposition, has proven to be a viable alternative for the problematic hot solvent approach, BUY TAMIFLU NO PRESCRIPTION.

The technology


The first set of experiments were focused on the production of zinc sulfide, order TAMIFLU from mexican pharmacy, Discount TAMIFLU, a wide band gap semiconductor that has been used as a buffer layer in thin film solar cells and as a surface passivization shell for semiconductor quantum dots. The experimental set-up utilized a tubular glass chamber surrounded by a Radio Frequency (RF) generator that is used to create the non-thermal plasma, TAMIFLU dosage. Ordering TAMIFLU online, Argon is used as the carrier gas for the plasma-based reaction. In separate feed systems, buy TAMIFLU from canada, Rx free TAMIFLU, the argon carrier was infused with elemental sulfur vapor and diethyl zinc vapor. BUY TAMIFLU NO PRESCRIPTION, Elemental sulfur was chosen over hydrogen sulfide for toxicity (of the H2S) reasons. Once formed, TAMIFLU from canadian pharmacy, Online buying TAMIFLU hcl, the particles are deposited on an outlet filter of silicon.

Preliminary results


The apparatus has been shown to produce single crystal nano particles that are stable for months, cheap TAMIFLU. Buy no prescription TAMIFLU online, Crystalline ZnS particles with 2–10 nm diameters were synthesized. Electron microscopy confirmed that the particles were single crystals. Reaction times of 10ms were observed and production rates of 250mg/hr with 25% mass yield were achieved in the small (8 cc) bench scale reactor, TAMIFLU cost.

Because of the nature of the feed system and reaction process, the size and composition of the nanocrystals are controllable, BUY TAMIFLU NO PRESCRIPTION. Doses TAMIFLU work, Flow rates (residence times), system pressures and feed ratios, buy cheap TAMIFLU, Cheap TAMIFLU no rx, and compositions are all factors, and the system exhibits a wide process window, online buy TAMIFLU without a prescription. Herbal TAMIFLU, The nanocrystals can be deposited on substrate surfaces directly or formed into stable nanocrystal dispersions. It is believed that this is the first production of metal sulfide nanocrystals using a non-thermal plasma process.

Elijah THimsen

Future Directions


Utilization of other single organometallic constituent feeds including iron, tin, and copper have yielded preliminary positive results. Multiple streams and mixtures will also be evaluated for other significant metal sulfide semiconductor species. For additional information, contact Elijah Thimsen.
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December 5th, 2013

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PCIL and CO2

On Location BUY GENERIC PRILIGY DAPOXETINE NO PRESCRIPTION, The ability to capture or sequester carbon dioxide (CO2) from mixed gas streams is under intense study by many researchers using many methods. No prescription GENERIC PRILIGY DAPOXETINE online, Reducing the emission of this greenhouse gas, especially from combustion and power generation sources, doses GENERIC PRILIGY DAPOXETINE work, GENERIC PRILIGY DAPOXETINE gel, ointment, cream, pill, spray, continuous-release, extended-release, is critical to environmental improvement. In a session at the 2013 AIChE Annual Meeting, GENERIC PRILIGY DAPOXETINE from mexico, Where can i buy GENERIC PRILIGY DAPOXETINE online, the use of ionic liquids that change phase in the presence of CO2 for this purpose was discussed and a novel CO2 capture process was proposed.

Limitations of current chemical systems


Aqueous amines such as monoethanolamine are currently in use in combustion gas treatment systems as CO2 sequestration agents, online buying GENERIC PRILIGY DAPOXETINE hcl. GENERIC PRILIGY DAPOXETINE recreational, They have several attributes that negatively affect their cost of use, including:

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Phase Change Ionic Liquids (PCILs) have the ability to absorb 1:1 mole ration of CO2 with none of the aqueous amines' problems, my GENERIC PRILIGY DAPOXETINE experience.


Phase change ionic liquids


Ionic liquids (IL) are organic compounds of low vapor pressure and high stability with variable melting temperatures that depend upon the nature of the ion pair, BUY GENERIC PRILIGY DAPOXETINE NO PRESCRIPTION. GENERIC PRILIGY DAPOXETINE maximum dosage, Ionic pairs can be quite varied, and consideration was given to various cations, kjøpe GENERIC PRILIGY DAPOXETINE på nett, köpa GENERIC PRILIGY DAPOXETINE online, GENERIC PRILIGY DAPOXETINE interactions, such as phosphonium, ammonium and imidazolium ion varieties, purchase GENERIC PRILIGY DAPOXETINE online no prescription. Comprar en línea GENERIC PRILIGY DAPOXETINE, comprar GENERIC PRILIGY DAPOXETINE baratos, In this work the combination that was studied was a organo-phosphonium ion (tetraethylphosphonium+) and an imadazolide ion (benzimidazolide-) that was a solid at room temperature. What was discovered was that when ILs of this composition were melted and then exposed to CO2, after GENERIC PRILIGY DAPOXETINE, Cheap GENERIC PRILIGY DAPOXETINE, cooled they did not resolidify at the same temperature when cooling, but at one much much lower, taking GENERIC PRILIGY DAPOXETINE. GENERIC PRILIGY DAPOXETINE for sale, Their melting point dropped from 166C to <60C. BUY GENERIC PRILIGY DAPOXETINE NO PRESCRIPTION, Subsequently, when the CO2 was removed, they resolidified (giving off a heat of fusion). This discovery sparked the idea of a novel process to exploit the phenomena, GENERIC PRILIGY DAPOXETINE trusted pharmacy reviews. Effects of GENERIC PRILIGY DAPOXETINE,

Proposed process


Combustion gasses high in CO2 content are introduced into an absorber column with the solid form PCIL. The CO2 is absorbed by the PCIL and the resultant "scrubbed" flue gas is discharged (or sent for other contaminant removal processes), GENERIC PRILIGY DAPOXETINE samples. GENERIC PRILIGY DAPOXETINE long term, The now-liquid PCIL is first sent through a heat recovery exchanger, then to a spray tower, GENERIC PRILIGY DAPOXETINE description. In the tower the PCIL gives up its CO2 and solidifies to be sent back (via the exchanger) to the absorber column, BUY GENERIC PRILIGY DAPOXETINE NO PRESCRIPTION. Online GENERIC PRILIGY DAPOXETINE without a prescription, The viscosity of the absorbed PPCIL is < 100 cp, which is a process advantage, GENERIC PRILIGY DAPOXETINE results. Order GENERIC PRILIGY DAPOXETINE from mexican pharmacy, However, the PCIL is hydrophilic, and the presence of water interferes with the crystallization of the PCIL, which may require a flue gas drying step prior to the absorption column.

Moving forward


This technology was named one of "7 Radical Energy Solutions" by Scientific American. Currently, additional lab feasibility demostrations are being performed by the Mid-Atlantic Technology Research and Innovation Center (MATRIC).

For more information contact Samuel Seo, Ph.D. candidate at the University of Notre Dame.


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December 2nd, 2013

CELEBREX FOR SALE

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On Location CELEBREX FOR SALE, While attending the presentation on "New and Novel Materials for Membrane Separations" by Richard Noble of the University of Colorado, I was fascinated by his discussion of membrane engineering and its application to a non-traditional engineering challenge. My CELEBREX experience, It seems that developing these new "mixed-matrix membrane" systems can benefit our soldiers on the chemical warfare battlefield.

The problems


Anyone who has worn a HazMat suit knows that they can be hotter than the blazes, order CELEBREX no prescription. CELEBREX no prescription, The impervious coating on the suit that protects you from the hazardous environmental conditions outside the suit also traps moisture and heat inside the suit. This can be uncomfortable for someone in industry, buy generic CELEBREX. It can be deadly for a soldier in a hazardous battle zone, CELEBREX FOR SALE. CELEBREX schedule, However, traditional "breathable" fabrics are not particularly adept at blocking chemical intrusions, CELEBREX overnight, CELEBREX reviews, nor can you necessarily tell whether there has been an exposure. What's more, kjøpe CELEBREX på nett, köpa CELEBREX online, CELEBREX mg, once exposed, it's also difficult to know if surface is contaminated (and dangerous!), CELEBREX forum. Get CELEBREX, The challenge then is to engineer a membrane fabric that allows for adequate moisture transport without allowing hazardous agents to pass into the suit, also decontaminating the chemical warfare agent (CWA) and indicating the exposure incident as well, online CELEBREX without a prescription. CELEBREX dangers, Oh, and it should be lightweight and easy to manufacture, CELEBREX from mexico. CELEBREX FOR SALE, A chemical engineering challenge indeed. Purchase CELEBREX online no prescription,

Perspiration transport


For the particular problem, the minimum moisture transport was specified to be 1500 grams/square meter/day, purchase CELEBREX online. CELEBREX description, The use of room temperature ionic liquids (RTILs) with bis(trifyl)imide (Tf2N-) as the anion- and imadazolium-based diols as the cation basis for the membrane polymer were selected on their ability to deliver altered miscibility. The degree of hydrophilicity of these compounds is essentially "tuneable" based on length and nature of the carbon chain opposite the diol on the imadazole ring, CELEBREX online cod. CELEBREX natural, This organic end can also be attached to various olefin monomers and photopolymerized to form the polymer from which the membrane is cast. Various diols and also co-monomers were tested in order to achieve the minimum moisture transport and maximum chemical barrier, CELEBREX FOR SALE. Several promising candidates were discovered that achieved 0% chemical passage and well over 1500 g/sm/d moisture transport, CELEBREX price. Buy CELEBREX without a prescription,

Chemical agent neutralizer


In order to effectively serve a soldier in a conflict, the barrier to the chemical agent needs to be 100% effective for 22 hours (DOD specification), buy CELEBREX online no prescription. CELEBREX used for, Of course, simply being a barrier is a good start, CELEBREX over the counter, CELEBREX blogs, but the ability to actually neutralize the CWA would be much better. In this research, CEES, a mono-dechlorinated form of mustard gas, was used for testing purposes. CELEBREX FOR SALE, Zeolites were chosen as preliminary candidates for the decontamination agents. The specific zeolite chosen for the decontamination of CEES is the well studied zeolite X. The hydrolysis reaction produces the non-active hydroxyl version of the CEES. This reaction happens at room temperature.

By using a "mixed-membrane" approach where zeolite particles are incorporated in the RTIL based polymer, both high moisture fluxes and 100% destruction of the CEES is possible, thus achieving the best of both worlds. In theory, many other unique properties could be provided by different components in the composite or mixed membrane system, CELEBREX FOR SALE.

Future indications


Richard D. Noble

Additional research needs to be done to identify the optimal polymer/zeolite systems from both a performance and cost/manufacturing basis. In addition, the differing nature of CWAs that may be encountered will challenge the nature of the mixed-matrix membrane components.

For more information about this and other new membrane research being conducted at the University of Colorado contact Dr. Richard D. Noble.

What other applications might be suitable to a mixed-matrix membrane approach?


Images: Dr. Richard D. Noble

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November 29th, 2013

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On Location BUY BAYCIP NO PRESCRIPTION, During the Annual Meeting, 2013 AIChE President Phil Westmoreland sat down with Dr. Pablo Debenedetti, where to buy BAYCIP, BAYCIP recreational, the 65th AIChE Institute Lecturer, to discuss his lecture entitled "Theory and Computation in Modern Chemical Engineering: A Thermodynamicist’s Perspective."

Watch their interview in the video panel on the right, fast shipping BAYCIP. BAYCIP cost,

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November 26th, 2013

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On Location BUY DORMONOCT NO PRESCRIPTION, One of the challenges of utilizing solar energy in the chemical process industries is greatly increasing the efficiency of energy conversion. Is DORMONOCT safe, To this end, a novel reactor design has been developed at the University of Florida, DORMONOCT treatment. DORMONOCT without prescription, Preliminary tests using a pilot-scale system capable of taking in 10kW solar energy and using it to drive the splitting of water have been successful.

Requirements and considerations


Many factors have to be addressed for the resulting design to be technically, canada, mexico, india, Where can i cheapest DORMONOCT online, operationally, and commercially viable:

  • Thermally stable at temperatures up to 1700° C

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Design


The reactor's solar furnace is an insulated cylindrical vessel, DORMONOCT price, DORMONOCT street price, oriented on its side with a round aperture (no window to reduce efficiency) for the pre-concentrated sunlight to enter. In a similar (internal) cylindrical arrangement is the reactor proper, DORMONOCT reviews, Is DORMONOCT addictive, which is a series of double-pipe tubular reactors with an iron oxide redox-cycle media in the annular (outer pass) of the double-pipe. Since the two reactions steps occur at significantly different temperatures, a shutter arrangement is utilized to allow for the reactor to cool for the water splitting (closed) and heat for the oxygen strip (open), BUY DORMONOCT NO PRESCRIPTION. A bank of high power lamps provide the simulated sunlight, DORMONOCT natural. Low dose DORMONOCT, The use of the double pass tube design reduces the number of tube/reactor seals by 50% and allows a "clean" front face of the reactor where heat stresses are the greatest.

The insulated reactor

Process


In a typical water splitting scheme utilizing a metal-oxide redox cycle, online buy DORMONOCT without a prescription, About DORMONOCT, steam is fed and split on the metal oxide which binds the oxygen and yields hydrogen. In a subsequent step, DORMONOCT dosage, Buy generic DORMONOCT, an inert gas sweep is conducted and the oxygen removed, and the process is ready for the next cycle, DORMONOCT no rx. BUY DORMONOCT NO PRESCRIPTION, In this design, steam (800-1000° C reaction temps) and sweep gas (1200-1500° C reaction temps) are alternately fed to the reactor tubes, with the resultant hydrogen and oxygen respectively withdrawn. DORMONOCT forum, The oxygen withdrawal being driven by the reduction in O2 partial pressure due the sweep gas.

The "proof-of-concept" set-up utilized only one tube, buy cheap DORMONOCT, Buy no prescription DORMONOCT online, and in tests run so far, the basic design has proven to be successful overall, buy cheap DORMONOCT no rx. DORMONOCT australia, uk, us, usa, One and two inch tubes were tested. The front face of the reactor did have some stress deformation in one section of the joint with the side, DORMONOCT schedule, DORMONOCT dose, and there was deterioration in the edges of the reactor aperture.

Next steps


From the design standpoint, a different joining method between the front and the sides of the reactor will be utilized, BUY DORMONOCT NO PRESCRIPTION. Options to eliminate the deterioration of the light opening such as better focusing of the sunlight, purchase DORMONOCT online no prescription, Canada, mexico, india, and standardizing on and installing many more double-pass reactor tubes will also be accomplished.

With additional tubes installed, better process cycle data will be able to be collected, including the all-important temperature (heat) distribution in the reactor. An alternative method of oxygen removal by applying a vacuum instead of using a sweep gas will be also be explored. It is hoped that the results will take the proof-of-concept to a more rigorous feasibility evaluation.

Nicholas AuYeung

The presentation was made at the 2013 AIChE Annual Meeting by Nicholas "Nick" AuYeung, Post-Doctoral Research Associate at the University of Florida in Gainesville. Please contact Nick for additional information.

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November 20th, 2013

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On Location BUY AYGESTIN NO PRESCRIPTION, The term bio-hybrid solar cells refer to devices that utilize photoactive biological compounds/complexes as the main electron generating element of the photovoltaic cell construct. Of these photoactive materials, AYGESTIN dose, Order AYGESTIN online overnight delivery no prescription, those designated photosystem I proteins (PSI) are commonly found in easily cultivated plants. Being able to "grow your own" critical elements of such a technology would be a boon for underdeveloped and remote areas of the world that have a need for off-the-grid electrical power, AYGESTIN gel, ointment, cream, pill, spray, continuous-release, extended-release. AYGESTIN from mexico,

The PSI Complex


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The PSI complex is a 17-protein system including bound chlorophylls of roughly 500,000 MW, AYGESTIN pharmacy. Where can i find AYGESTIN online, It is 100% quantum efficient and generates a 1.1 V potential with a ~10 nm footprint. It contains ferrodoxins as the electron transfer components, AYGESTIN no prescription, AYGESTIN maximum dosage, and achieves charge separation in 15 picoseconds. It can be readily extracted from common spinach, AYGESTIN class, AYGESTIN use, dissolved in a solvent and cast on any suitable electrode substrate.

PV cell construction

BUY AYGESTIN NO PRESCRIPTION, The base substrate of the cell is the electron donating material. Gold was used initially to show basic feasibility of use of the extracted PSI, AYGESTIN used for. AYGESTIN canada, mexico, india, Gold, however—like any other metal—has no hesitation to the back-flow of electrons, online buying AYGESTIN, Purchase AYGESTIN, and is thus unacceptable for PV cells. Poly-doped silicon (p-Si) is a more traditional base substrate, AYGESTIN results, Order AYGESTIN no prescription, and performs well in this application, not allowing electron back-flow, buy AYGESTIN online no prescription. AYGESTIN dangers, Final electron acceptance from the complex was accomplished using methyl viologen.

One of the rate-limiting steps of the cell as constructed was the transfer of electrons in the film itself, BUY AYGESTIN NO PRESCRIPTION. Therefore, online buy AYGESTIN without a prescription, Online AYGESTIN without a prescription, the inclusion of graphene oxide (GO) and reduced graphene oxide (RGO) into the PSI matrix was investigated to see if they could improve electron transfer. The results were promising, australia, uk, us, usa, My AYGESTIN experience, as  there were current density increases of ~150% with RGO incorporated and and ~230% with GO incorporated.

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Multiple layers


Now, a single layer of PSI does not generate near enough current density to be of value, so the effects of casting multiple layers, one at a time, were studied to see if an acceptable current could be generated. The results of these preliminary tests with the p-Si-PSI-MV system has documented near linear increases in absorbance (440 and 680 nm) and subsequent current density increases, similarly linear with layer numbers, up to 7 (so far).

Moving forward


Initial results are very promising. Additional work will focus on:

  • Replacement of the toxic MV with a more suitable final electron transfer compound

  • Refining and optimizing the inclusion of GO into the PSI.

  • Determining the number of layers of PSI-GO for optimal cell performance.


G. Kane Jennings

For more details contact G. Kane Jennings, chair and professor of chemical engineering at Vanderbilt University.

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November 15th, 2013

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squareLisa Jackson receives 2013 MAC Eminent Engineer Award

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