Open Access. Powered by Scholars. Published by Universities.®
- Institution
- Keyword
-
- Membrane (10)
- Removal (9)
- Trace (8)
- Organic (7)
- Voltage (7)
-
- Bioreactor (6)
- Treatment (6)
- Control (5)
- Grid (5)
- Activated (4)
- Analysis (4)
- Carbon (4)
- Connected (4)
- Contaminant (4)
- Coupling (4)
- CyClaDes Project (4)
- During (4)
- Energy (4)
- Fate (4)
- Novel (4)
- Pv (4)
- Research (4)
- Systems (4)
- Bibliometrics (3)
- Choice (3)
- Degradation (3)
- Distributed (3)
- Distribution (3)
- Enhancement (3)
- Environment (3)
- Publication
-
- Faisal I Hai (27)
- Dr Philip Ciufo (15)
- Nagesh Shukla (9)
- Gesa Praetorius (5)
- Associate Professor Adam Rennie (4)
-
- Anthony A Espinoza Mr (3)
- Jerry C Schnepp (3)
- Michael Baldauf (3)
- Michael P. Johnson (3)
- Yee Sin Ang (3)
- Brent Bowen (2)
- Jan Comfort (2)
- Kelly Whealan George (2)
- Philip Shapira (2)
- Professor Katina Michael (2)
- SAJJAD KHAKSARI (2)
- Sandra A. Yocum (2)
- Stéphanie Corde (2)
- Aaron D. Clevenger (1)
- Alan J. Stolzer (1)
- Anna G. Hoover (1)
- Associate Professor Katina Michael (1)
- Dapeng Li (1)
- Deogratias Eustace (1)
- Donald J. Polzella (1)
- Dr Carole Birrell (1)
- Dr Roba Abbas (1)
- Dr. Chen Ling (1)
- Eng-Poh Ng (1)
- Gabriel Leiner (1)
Articles 1 - 30 of 120
Full-Text Articles in Engineering
Aeronautics Education, Research, And Industry Alliance (Aerial) Progress Report And Proposal, Brent D. Bowen
Aeronautics Education, Research, And Industry Alliance (Aerial) Progress Report And Proposal, Brent D. Bowen
Brent Bowen
UNOAI Report 04-2
The Aeronautics Education, Research, and Industry Alliance (AERIAL), which began as a comprehensive, mufti-faceted NASA EPSCoR 2000 initiative, has contributed substantially to the strategic research and technology priorities of NASA, while intensifying Nebraska's rapidly growing aeronautics research and development endeavors. AERIAL has enabled Nebraska researchers to: (a) continue strengthening their collaborative relationships with NASA Field Centers, Codes, and Enterprises; Co) increase the capacity of higher education throughout Nebraska to invigorate and expand aeronautics research; and (c) expedite the development of aeronautics-related research infrastructure and industry in the state. Nebraska has placed emphasis on successfully securing additional funds …
Aeronautics Education, Research, And Industry Alliance (Aerial) Progress Report And Proposal, Brent D. Bowen
Aeronautics Education, Research, And Industry Alliance (Aerial) Progress Report And Proposal, Brent D. Bowen
Brent Bowen
UNOAI Report 04-2 The Aeronautics Education, Research, and Industry Alliance (AERIAL), which began as a comprehensive, mufti-faceted NASA EPSCoR 2000 initiative, has contributed substantially to the strategic research and technology priorities of NASA, while intensifying Nebraska's rapidly growing aeronautics research and development endeavors. AERIAL has enabled Nebraska researchers to: (a) continue strengthening their collaborative relationships with NASA Field Centers, Codes, and Enterprises; Co) increase the capacity of higher education throughout Nebraska to invigorate and expand aeronautics research; and (c) expedite the development of aeronautics-related research infrastructure and industry in the state. Nebraska has placed emphasis on successfully securing additional funds …
Marbles: The Application Of Input-Output Concepts To Safety Management Systems, Tim Brady, A. Stolzer, Anthony Brickhouse, Antonio Cortes, Dan Mccune, Jayathi Raghavan, David Freiwald
Marbles: The Application Of Input-Output Concepts To Safety Management Systems, Tim Brady, A. Stolzer, Anthony Brickhouse, Antonio Cortes, Dan Mccune, Jayathi Raghavan, David Freiwald
Alan J. Stolzer
The goal of this research was to apply the economic concept titled Input-Output Analysis to an aviation safety concept titled Safety Management Systems (SMS). Input-Output (IO) is based upon the interrelationships of various components of an economic system and what happens to the system when one or more of those components changes. Since SMS is, by definition, a system with definable components, the research sought to determine if the interrelationships between those components could be determined and quantified. The term ‘‘marbles’’ was used to describe the activities that led to the IO-SMS matrix. Marbles was used as a metaphor for …
Community-Engaged Decision Modeling For Local Economic Development, Michael P. Johnson Jr., Sandeep Jani
Community-Engaged Decision Modeling For Local Economic Development, Michael P. Johnson Jr., Sandeep Jani
Michael P. Johnson
This presentation contains current results from a research project to identify success metrics and decision opportunities for Boston Main Streets organizations. It represents an application of qualitative decision analytic methods for values and objectives design
A Household-Level Approach To Staging Wildfire Evacuation Warnings Using Trigger Modeling, Dapeng Li
A Household-Level Approach To Staging Wildfire Evacuation Warnings Using Trigger Modeling, Dapeng Li
Dapeng Li
Increased Awareness For Maritime Human Factors Through E-Learning In Crew-Centered Design, Gesa Praetorius, Aditi Kataria, Erik Styhr Petersen, Jens-Uwe Schröder-Hinrichs, Michael Baldauf, Nina Kähler
Increased Awareness For Maritime Human Factors Through E-Learning In Crew-Centered Design, Gesa Praetorius, Aditi Kataria, Erik Styhr Petersen, Jens-Uwe Schröder-Hinrichs, Michael Baldauf, Nina Kähler
Michael Baldauf
In the past two decades, the need to address human factors in shipping through integration of ergonomics in the design of ships and shipboard equipment has increased significantly as a result of the technological development of modern ships. The International Maritime Organization (IMO), the United Nations’ specialized organizationfor ship safety issues, has adopted a vision to address human factors as a key element for the improvement of maritime safety, and in that context acknowledges the human element as complex and multi-dimensional. IMO’s standards focus on the avoidance of human and organization error. But in spite of this, and despite the …
Exploring Bridge-Engine Control Room Collaborative Team Communication, Aditi Kataria, Eric Holder, Gesa Praetorius, Michael Baldauf, Jens-Uwe Schröder-Hinrichs
Exploring Bridge-Engine Control Room Collaborative Team Communication, Aditi Kataria, Eric Holder, Gesa Praetorius, Michael Baldauf, Jens-Uwe Schröder-Hinrichs
Michael Baldauf
The EC funded CyClaDes research project is designed to promote the increased impact of the human element in shipping across the design and operational lifecycle of ships. It addresses the design and operation of ships and ship systems. One of the CyClaDes’ tasks is to create a crew‐centered design case‐study examination of the information that is shared between the Bridge and Engine Control Room (ECR) that helps the crew coordinate to ensure understanding and complete interconnected tasks. This information can be provided in various ways, including communication devices or obtained from a common database, display, or even the ship environment …
Introducing The Concept Of Resilience Into Maritime Safety, Jens-Uwe Schröder-Hinrichs Phd, Gesa Praetorius, Armando Graziano, Aditi Kataria, Michael Baldauf
Introducing The Concept Of Resilience Into Maritime Safety, Jens-Uwe Schröder-Hinrichs Phd, Gesa Praetorius, Armando Graziano, Aditi Kataria, Michael Baldauf
Michael Baldauf
The maritime industry is still characterized by prescriptive standards and reactive approaches in relation to safety and risk management to a large extent. For a very long time, responses to maritime accidents have been in terms of automation, regulation and training. While this as such is not wrong, it does not offer the full potential that concepts of resilience seem to suggest. The typical question that is predominately asked is still why things go wrong when accidents occur and search for causes and explanations is undertaken. An evaluation of the safety level achieved system and a focus on system components …
27-10-15 Wigan Ieee Smart Cities Guadalajara Education Workshop Presentatation, Marcus R. Wigan
27-10-15 Wigan Ieee Smart Cities Guadalajara Education Workshop Presentatation, Marcus R. Wigan
Marcus R Wigan
Introducing The Concept Of Resilience Into Maritime Safety, Jens-Uwe Schröder-Hinrichs Phd, Gesa Praetorius, Armando Graziano, Aditi Kataria, Michael Baldauf
Introducing The Concept Of Resilience Into Maritime Safety, Jens-Uwe Schröder-Hinrichs Phd, Gesa Praetorius, Armando Graziano, Aditi Kataria, Michael Baldauf
Gesa Praetorius
The maritime industry is still characterized by prescriptive standards and reactive approaches in relation to safety and risk management to a large extent. For a very long time, responses to maritime accidents have been in terms of automation, regulation and training. While this as such is not wrong, it does not offer the full potential that concepts of resilience seem to suggest. The typical question that is predominately asked is still why things go wrong when accidents occur and search for causes and explanations is undertaken. An evaluation of the safety level achieved system and a focus on system components …
From Human Reliability To Resilience & System Performance - Adapting To A Changing World, Gesa Praetorius, Fulko C. Van Westrenen
From Human Reliability To Resilience & System Performance - Adapting To A Changing World, Gesa Praetorius, Fulko C. Van Westrenen
Gesa Praetorius
Gvsu Repository Migration Update, Matt Schultz
Gvsu Repository Migration Update, Matt Schultz
Matt Schultz
Keynote: Justifying Uberveillance- The Internet Of Things And The Flawed Sustainability Premise, Katina Michael
Keynote: Justifying Uberveillance- The Internet Of Things And The Flawed Sustainability Premise, Katina Michael
Professor Katina Michael
Imagine a world where everything was numbered. Not just homes with street addresses, or cars with number plates, or smart phones with telephone numbers, or email addresses with passwords, but absolutely everything you could see and touch and even that which you could not. Well, that world is here, right now. This vast expanse we call “Earth” is currently being quantified and photographed, inch by inch, by satellites, street cameras, drones and high altitude balloons. Longitude and latitude coordinates provide us with the precise degrees, minutes and seconds of the physical space, and unique time stamps tell us where a …
Stochastic Modeling And Optimization Of Multi-Plant Capacity Planning Problem, Anoop Verma, Nagesh Shukla, S.K Tyagi, Nishikant Mishra
Stochastic Modeling And Optimization Of Multi-Plant Capacity Planning Problem, Anoop Verma, Nagesh Shukla, S.K Tyagi, Nishikant Mishra
Nagesh Shukla
n this paper the problem of capacity planning under risk from demand and price/cost uncertainty of the finished products is addressed. The deterministic model is extended into a two-stage stochastic model with fixed recourse by means of various expected levels of demand as random. A recourse penalty is also included in the objective for both shortage and surplus in the finished products. The model is analyzed to quantify the risk using Markowitz mean-variance model.
Tour-Based Travel Mode Choice Estimation Based On Data Mining And Fuzzy Techniques, Nagesh Shukla, Jun Ma, Rohan Wickramasuriya, Nam N. Huynh, Pascal Perez
Tour-Based Travel Mode Choice Estimation Based On Data Mining And Fuzzy Techniques, Nagesh Shukla, Jun Ma, Rohan Wickramasuriya, Nam N. Huynh, Pascal Perez
Nagesh Shukla
No abstract provided.
Summability For Nonunital Spectral Triples, Adam C. Rennie
Summability For Nonunital Spectral Triples, Adam C. Rennie
Associate Professor Adam Rennie
This paper examines the issue of summability for spectral triples for the class of nonunital algebras. For the case of (p, -) summability, we prove that the Dixmier trace can be used to define a (semifinite) trace on the algebra of the spectral triple. We show this trace is well-behaved, and provide a criteria for measurability of an operator in terms of zeta functions. We also show that all our hypotheses are satisfied by spectral triples arising from eodesically complete Riemannian manifolds. In addition, we indicate how the Local Index Theorem of Connes-Moscovici extends to our nonunital setting.
Smoothness And Locality For Nonunital Spectral Triples, Adam C. Rennie
Smoothness And Locality For Nonunital Spectral Triples, Adam C. Rennie
Associate Professor Adam Rennie
To deal with technical issues in noncommuntative geometry for nonunital algebras, we introduce a useful class of algebras and their modules. Thes algebras and modules allo us to extend all of the smoothness results for spectral triples to the nonunital case. In addition, we show that smooth spectral tiples are closed under the C- functional calculus of self-adjoint elements. In the final section we show that our algebras allow the formulation of Poincare Duality and that the algebras of smooth spectral triples are H-unital.
The Resolvent Cocycle In Twisted Cyclic Cohomology And A Local Index Formula For The Podle's Sphere, Adam Rennie, Roger Senior
The Resolvent Cocycle In Twisted Cyclic Cohomology And A Local Index Formula For The Podle's Sphere, Adam Rennie, Roger Senior
Associate Professor Adam Rennie
We continue the investigation of twisted homology theories in the context of dimension drop phenomena. This work unifies previous equivariant index calculations in twisted cyclic cohomology. We do this by proving the existence of the resolvent cocycle, a finitely summable analogue of the JLO cocycle, under weaker smoothness hypotheses and in the more general setting of 'modular' spectral triples. As an application we show that using our twisted resolvent cocycle, we can obtain a local index formula for the Podles sphere. The resulting twisted cyclic cocycle has non-vanishing Hochschild class which is in dimension 2.
The K-Theory Of Heegaard Quantum Lens Spaces, Piotr M. Hajac, Adam Rennie, Bartosz Zielinski
The K-Theory Of Heegaard Quantum Lens Spaces, Piotr M. Hajac, Adam Rennie, Bartosz Zielinski
Associate Professor Adam Rennie
Representing Z/NZ as roots of unity, we restrict a natural U(1)-action on the Heegaard quantum sphere to Z/NZ, and call the quotient spaces Heegaard quantum lens spaces. Then we use this representation of Z/NZ to construct an associated complex loine bundle. This paper proves the stable non-triviality of these line bundles over any of the quantum lens spaces we consider. We use the pullback structure of the C*-algebra of the lens space to compute its K-theory via the Mayer-Vietoris sequence, and an explicit form of the Bass connecting homomorphism to prove the stable non-triviality of the bundles. On the algebraic …
The Fate Of Pharmaceuticals, Steroid Hormones, Phytoestrogens, Uv-Filters And Pesticides During Mbr Treatment, Kaushalya C. Wijekoon, Faisal I. Hai, Jinguo Kang, William E. Price, Wenshan Guo, Hao H. Ngo, Long D. Nghiem
The Fate Of Pharmaceuticals, Steroid Hormones, Phytoestrogens, Uv-Filters And Pesticides During Mbr Treatment, Kaushalya C. Wijekoon, Faisal I. Hai, Jinguo Kang, William E. Price, Wenshan Guo, Hao H. Ngo, Long D. Nghiem
Faisal I Hai
This study examined the relationship between molecular properties and the fate of trace organic contaminants (TrOCs) in the aqueous and solid phases during wastewater treatment by MBR. A set of 29 TrOCs was selected to represent pharmaceuticals, steroid hormones, phytoestrogens, UV-filters and pesticides that occur ubiquitously in municipal wastewater. Both adsorption and biodegradation/transformation were found responsible for the removal of TrOCs by MBR treatment. A connection between biodegradation and molecular structure could be observed while adsorption was the dominant removal mechanism for the hydrophobic (logD > 3.2) compounds. Highly hydrophobic (logD > 3.2) but readily biodegradable compounds did not accumulate in sludge. …
Effects Of Salinity Build-Up On Biomass Characteristics And Trace Organic Chemical Removal: Implications On The Development Of High Retention Membrane Bioreactors, Wenhai Luo, Faisal I. Hai, Jinguo Kang, William E. Price, Wenshan Guo, Hao H. Ngo, Kazuo Yamamoto, Long D. Nghiem
Effects Of Salinity Build-Up On Biomass Characteristics And Trace Organic Chemical Removal: Implications On The Development Of High Retention Membrane Bioreactors, Wenhai Luo, Faisal I. Hai, Jinguo Kang, William E. Price, Wenshan Guo, Hao H. Ngo, Kazuo Yamamoto, Long D. Nghiem
Faisal I Hai
This study investigated the impact of salinity build-up on the performance of membrane bioreactor (MBR), specifically in terms of the removal and fate of trace organic chemicals (TrOCs), nutrient removal, and biomass characteristics. Stepwise increase of the influent salinity, simulating salinity build-up in high retention MBRs, adversely affected the metabolic activity in the bioreactor, thereby reducing organic and nutrient removal. The removal of hydrophilic TrOCs by MBR decreased due to salinity build-up. By contrast, with the exception of 17α-ethynylestradiol, the removal of all hydrophobic TrOCs was not affected at high salinity. Moreover, salinity build-up had negligible impact on the residual …
Continuous Biotransformation Of Bisphenol A And Diclofenac By Laccase In An Enzymatic Membrane Reactor, Ngoc Luong Nguyen, Faisal I. Hai, William Price, Frederic Leusch, Felicity Roddick, Ewan J. Mcadam, Saleh Faraj Magram, Long D. Nghiem
Continuous Biotransformation Of Bisphenol A And Diclofenac By Laccase In An Enzymatic Membrane Reactor, Ngoc Luong Nguyen, Faisal I. Hai, William Price, Frederic Leusch, Felicity Roddick, Ewan J. Mcadam, Saleh Faraj Magram, Long D. Nghiem
Faisal I Hai
A novel enzymatic membrane reactor (EMR) was explored for continuous removal of two trace organic contaminatnts (TrOCs) ubiquitously detected in wastewater - namely bisphenol A (BPA and diclofnac (DCF) - by a commercially available laccase from aspergillus oryzae.
Development Of A Predictive Framework To Assess The Removal Of Trace Organic Chemicals By Anaerobic Membrane Bioreactor, Kaushalya C. Wijekoon, James Mcdonald, Stuart J. Khan, Faisal I. Hai, William E. Price, Long D. Nghiem
Development Of A Predictive Framework To Assess The Removal Of Trace Organic Chemicals By Anaerobic Membrane Bioreactor, Kaushalya C. Wijekoon, James Mcdonald, Stuart J. Khan, Faisal I. Hai, William E. Price, Long D. Nghiem
Faisal I Hai
This study aims to develop a predictive framework to assess the removal and fate of trace organic chemicals (TrOCs) during wastewater treatment by anaerobic membrane bioreactor (AnMBR). The fate of 27 TrOCs in both the liquid and sludge phases during AnMBR treatment was systematically investigated. The results demonstrate a relationship between hydrophobicity and specific molecular features of TrOCs and their removal efficiency. These molecular features include the presence of electron withdrawing groups (EWGs) or donating groups (EDGs), especially those containing nitrogen and sulphur. All seven hydrophobic contaminants were well removed (>70%) by AnMBR treatment. Most hydrophilic TrOCs containing EDGs …
Enhancement Of Removal Of Trace Organic Contaminants By Powdered Activated Carbon Dosing Into Membrane Bioreactors, Ngoc Luong Nguyen, Faisal Ibney Hai, Long Nghiem, Jinguo Kang, William Price, Chul Park, Kazuo Yamamoto
Enhancement Of Removal Of Trace Organic Contaminants By Powdered Activated Carbon Dosing Into Membrane Bioreactors, Ngoc Luong Nguyen, Faisal Ibney Hai, Long Nghiem, Jinguo Kang, William Price, Chul Park, Kazuo Yamamoto
Faisal I Hai
This study compared the removal efficiency of 22 widespread trace organic contaminants by a laboratory-scale membrane bioreactor (MBR) with and without direct addition of powdered activated carbon (PAC) into the activated sludge reactor over a period of 312 days. The removal of hydrophilic and biologically persistent trace organic contaminants was immediately improved to above 95% after the addition of PAC into MBR. However, a compound-specific gradual decrease in removal underscored the requirement for the addition of fresh PAC. Adsorption onto PAC-added sludge appeared to play a significant role in the relatively more effective aqueous phase removal of a few resistant …
Introduction - A Review Of Membrane Reactors, Fausto Gallucci, Angelo Basile, Faisal Ibney Hai
Introduction - A Review Of Membrane Reactors, Fausto Gallucci, Angelo Basile, Faisal Ibney Hai
Faisal I Hai
In the last decades, membrane catalysis has been studied by several research and the significant progress in this field is summarized in several review articles (Armor 1998, Lin 2001, Lu 2007, Mcleary 2006, Sanchez 2002, Saracco 1994, Shu 1991). Considering a IUPAC definition (Koros 1996), a membrane reactor (MR) is a device for simultaneously performing a reaction (steam reforming, dry reforming, autothermal reforming, etc.) and a membrane-based separation in the same physical device. Therefore, the membrane not only plays the role of a separator, but also takes place in the reaction itself. The term Membrane Bioreactor (MBR), on the other …
Removal Of Pharmaceuticals, Steroid Hormones, Phytoestrogens, Uv-Filters, Industrial Chemicals And Pesticides By Trametes Versicolor: Role Of Biosorption And Biodegradation, Luong Nguyen, Faisal Ibney Hai, Shufan Yang, Jinguo Kang, Frederic Leusch, Felicity Roddick, William E. Price, Long D. Nghiem
Removal Of Pharmaceuticals, Steroid Hormones, Phytoestrogens, Uv-Filters, Industrial Chemicals And Pesticides By Trametes Versicolor: Role Of Biosorption And Biodegradation, Luong Nguyen, Faisal Ibney Hai, Shufan Yang, Jinguo Kang, Frederic Leusch, Felicity Roddick, William E. Price, Long D. Nghiem
Faisal I Hai
This study reports the removal of 30 diverse trace organic contaminants (TrOC) by live (biosorption þ biodegradation), intracellular enzyme-inhibited and chemically inactivated (biosorption only) whole-cell preparations and the fungal extracellular enzyme extract (predominantly laccase) from Trametes versicolor (ATCC 7731). Because phenolic substrates are amenable to degradation by laccase, all 14 phenolic TrOC were readily biodegraded. On the other hand, only eight of the 16 non-phenolic TrOC were readily biodegraded while the removal of hydrophilic TrOC (log D < 3) was negligible. With the exception of diclofenac, no non-phenolic TrOC were degraded by the extracellular enzyme extract. The whole-cell culture showed considerably …
Selection Of Forward Osmosis Draw Solutes For Subsequent Integration With Anaerobic Treatment To Facilitate Resource Recovery From Wastewater, Ashley J. Ansari, Faisal I. Hai, Wenshan Guo, Hao H. Ngo, William E. Price, Long D. Nghiem
Selection Of Forward Osmosis Draw Solutes For Subsequent Integration With Anaerobic Treatment To Facilitate Resource Recovery From Wastewater, Ashley J. Ansari, Faisal I. Hai, Wenshan Guo, Hao H. Ngo, William E. Price, Long D. Nghiem
Faisal I Hai
Forward osmosis (FO) can be used to extract clean water and pre-concentrate municipal wastewater to make it amenable to anaerobic treatment. A protocol was developed to assess the suitability of FO draw solutes for pre-concentrating wastewater for potential integration with anaerobic treatment to facilitate resource recovery from wastewater. Draw solutes were evaluated in terms of their ability to induce osmotic pressure, water flux, and reverse solute flux. The compatibility of each draw solute with subsequent anaerobic treatment was assessed by biomethane potential analysis. The effect of each draw solute (at concentrations corresponding to the reverse solute flux at ten-fold pre-concentration …
Sludge Cycling Between Aerobic, Anoxic And Anaerobic Regimes To Reduce Sludge Production During Wastewater Treatment: Performance, Mechanisms, And Implications, Galilee Semblante, Faisal Ibney Hai, Huu H. Ngo, Wenshan Guo, Sheng-Jie You, William Price, Long Nghiem
Sludge Cycling Between Aerobic, Anoxic And Anaerobic Regimes To Reduce Sludge Production During Wastewater Treatment: Performance, Mechanisms, And Implications, Galilee Semblante, Faisal Ibney Hai, Huu H. Ngo, Wenshan Guo, Sheng-Jie You, William Price, Long Nghiem
Faisal I Hai
Alternate cycling of sludge in aerobic, anoxic, and anaerobic regimes is a promising strategy that can reduce the sludge yield of conventional activated sludge (CAS) by up to 50% with potentially lower capital and operating cost than physical- and/or chemical-based sludge minimisation techniques. The mechanisms responsible for reducing sludge yield include alterations to cellular metabolism and feeding behaviour (metabolic uncoupling, feasting/fasting, and endogenous decay), biological floc destruction, and predation on bacteria by higher organisms. Though discrepancies across various studies are recognisable, it is apparent that sludge retention time, oxygen-reduction potential of the anaerobic tank, temperature, sludge return ratio and loading …
The Effects Of Mediator And Granular Activated Carbon Addition On Degradation Of Trace Organic Contaminants By An Enzymatic Membrane Reactor, Luong N. Nguyen, Faisal I. Hai, William E. Price, Frederic Leusch, Felicity Roddick, Hao H. Ngo, Wenshan Guo, Saleh Faraj Magram, Long D. Nghiem
The Effects Of Mediator And Granular Activated Carbon Addition On Degradation Of Trace Organic Contaminants By An Enzymatic Membrane Reactor, Luong N. Nguyen, Faisal I. Hai, William E. Price, Frederic Leusch, Felicity Roddick, Hao H. Ngo, Wenshan Guo, Saleh Faraj Magram, Long D. Nghiem
Faisal I Hai
The removal of four recalcitrant trace organic contaminants (TrOCs), namely carbamazepine, diclofenac, sulfamethoxazole and atrazine by laccase in an enzymatic membrane reactor (EMR) was studied. Laccases are not effective for degrading non-phenolic compounds; nevertheless, 22-55% removal of these four TrOCs was achieved by the laccase EMR. Addition of the redox-mediator syringaldehyde (SA) to the EMR resulted in a notable dose-dependent improvement (15-45%) of TrOC removal affected by inherent TrOC properties and loading rates. However, SA addition resulted in a concomitant increase in the toxicity of the treated effluent. A further 14-25% improvement in aqueous phase removal of the TrOCs was …
Removal Of Emerging Trace Organic Contaminants By Mbr-Based Hybrid Treatment Processes, Luong Nguyen, Faisal Ibney Hai, Jinguo Kang, William E. Price, Long D. Nghiem
Removal Of Emerging Trace Organic Contaminants By Mbr-Based Hybrid Treatment Processes, Luong Nguyen, Faisal Ibney Hai, Jinguo Kang, William E. Price, Long D. Nghiem
Faisal I Hai
The aim of this study was to demonstrate the complementarity of combining membrane bioreactor (MBR) treatment with UV oxidation or high pressure membrane filtration processes such as nanofiltration (NF) or reverse osmosis (RO) for the removal of trace organic contaminants (TrOC). The results suggest that the removal mechanisms of TrOC by either UV oxidation or NF/RO membrane filtration differ significantly from those of an MBR system. Thus, they can complement MBR treatment very well to significantly improve the removal of TrOC. MBR treatment can effectively remove hydrophobic and readily biodegradable hydrophilic TrOC. The remaining hydrophilic and biologically persistent TrOC were …