https://orcid.org/0000-0002-3021-3942
CFD Drinking Water Wastewater Bioinformatics Metabolic Engineering
Professor in Civil, Construction, Environmental Engineering at NC State University
2021 journal article
The effect of activated sludge floc morphology on the measurement of biomass half-saturation coefficient: A 2D CFD biofilm model-based evaluation and experimental verification
Biochemical Engineering Journal, 168, 107931.
2020 journal article
Assessment of alternative herbicides for residential sewer root treatment and their effects on downstream treatment plant nitrification
Journal of Environmental Management, 258, 110058.
2020 journal article
Finite-Element Modeling of Landfills to Estimate Heat Generation, Transport, and Accumulation
Journal of Geotechnical and Geoenvironmental Engineering.
2020 journal article
Increased loading stress leads to convergence of microbial communities and high methane yields in adapted anaerobic co-digesters
Water Research, 169, 115155.
2020 journal article
Modeling cell aggregate morphology during aerobic granulation in activated sludge processes reveals the combined effect of substrate and shear
Water Research, 170, 115384.
2020 journal article
Reducing fat, oil, and grease (FOG) deposits formation and adhesion on sewer collection system structures through the use of fly ash replaced cement-based materials
Water Research, 186, 116304.
2019 journal article
Dynamic Modeling of Microalgae Growth and Lipid Production under Transient Light and Nitrogen Conditions
Environmental Science & Technology, 9(19), 11560–11568.
2019 journal article
Dynamic modelling of the iron deficiency modulated transcriptome response in Arabidopsis thaliana roots
In Silico Plants, 1(1).
2019 journal article
Flux modeling for monolignol biosynthesis
Current Opinion in Biotechnology, 56, 187–192.
2019 journal article
Genetic Algorithm–Genetic Programming Approach to Identify Hierarchical Models for Ultraviolet Disinfection Reactors
Journal of Environmental Engineering, 145(2), 04018139.
2019 journal article
Measuring the Shape and Size of Activated Sludge Particles Immobilized in Agar with an Open Source Software Pipeline
JOVE-JOURNAL OF VISUALIZED EXPERIMENTS, 2019(143).
2019 journal article
Relating nitrogen concentration and light intensity to the growth and lipid accumulation of Dunaliella viridis in a photobioreactor
Journal of Applied Phycology, 31(6), 3397–3409.
2018 journal article
Another Grand Challenge: Diversity in Environmental Engineering
Environmental Engineering Science, 35(6), 568–572.
2018 journal article
Assessing the impact of the 4CL enzyme complex on the robustness of monolignol biosynthesis using metabolic pathway analysis
PLOS ONE, 13(3), e0193896.
Ed(s): D. Cullen
2018 journal article
Controlling aerobic biological floc size using Couette-Taylor Bioreactors
Water Research, 147, 177–183.
2018 journal article
Development of Photochemical Microsensors for Evaluating Photosynthetic Light Dose Distributions in Microalgal Photobioreactors
Environmental Science & Technology, 10(21), 12538–12545.
2018 journal article
Improving wood properties for wood utilization through multi-omics integration in lignin biosynthesis
Nature Communications, 9(1).
2018 conference paper
Preliminary tests of sensors to detect sewer network blockages
ASABE 2018 Annual International Meeting.
2017 journal article
A critical review of fat, oil, and grease (FOG) in sewer collection systems: Challenges and control
Critical Reviews in Environmental Science and Technology, 47(13), 1191–1217.
2017 conference paper
A model to describe heat generation and accumulation at municipal solid waste landfills
Geotechnical frontiers 2017: waste containment, barriers, remediation, and sustainable geoengineering, (276), 281–288.
2017 journal article
Attenuated total reflectance fourier transform infrared spectroscopy for determination of long chain free fatty acid concentration in oily wastewater using the double wavenumber extrapolation technique
Talanta, 165, 526–532.
2017 journal article
Construction and Setup of a Bench-scale Algal Photosynthetic Bioreactor with Temperature, Light, and pH Monitoring for Kinetic Growth Tests
Journal of Visualized Experiments, 6(124).
2017 journal article
Heat Generation and Accumulation in Municipal Solid Waste Landfills
Environmental Science & Technology, 51(21), 12434–12442.
2017 journal article
Modeling fats, oil and grease deposit formation and accumulation in sewer collection systems
Journal of Hydroinformatics, 19(3), 443–455.
2017 conference paper
Unintended consequences of a local limits revision: One utility's experience with fats, oils, and grease
Water Environment Federation Technical Exhibition and Conference 2017, WEFTEC 2017, 8, 5522–5534.
2016 chapter
A Proteomic-Based Quantitative Analysis of the Relationship Between Monolignol Biosynthetic Protein Abundance and Lignin Content Using TransgenicPopulus trichocarpa
In Recent Advances in Polyphenol Research (Vol. 5, pp. 89–107).
2016 journal article
CFD for wastewater treatment: An overview
Water Science and Technology, 74(3), 549–563.
2016 conference paper
Fluid shear variation potentially plays a role in aerobic granular sludge formation
WEFTEC 2016 - 89th Water Environment Federation Annual Technical Exhibition and Conference, 3, 5737–5744.
2016 journal article
Good modelling practice in applying computational fluid dynamics for WWTP modelling
Water Science and Technology, 73(5), 969–982.
2016 journal article
Quantifying fat, oil, and grease deposit formation kinetics
Water Research, 88, 786–795.
2016 journal article
Structural characteristics and development of the cake layer in a dynamic membrane bioreactor
Separation and Purification Technology, 167, 88–96.
2016 journal article
Trends in population and demographics of US environmental engineering students and faculty from 2005 to 2013
Environmental Engineering Science, 33(8), 578–590.
2015 journal article
Clustering and differential alignment algorithm: Identification of early stage regulators in the Arabidopsis thaliana iron deficiency response
PLoS One, 10(8).
2015 journal article
Computational approaches to identify regulators of plant stress response using high-throughput gene expression data
Current Plant Biology, 3-4, 20–29.
2015 journal article
Computational fluid dynamics modeling alternatives for UV-initiated advanced oxidation processes
Water Quality Research Journal of Canada, 50(1), 4–20.
2015 journal article
Heuristic optimization of a continuous flow point-of-use UV-LED disinfection reactor using computational fluid dynamics
Water Research, 83, 310–318.
2015 conference paper
How to train your digester - Using step and pulse feeding of grease waste to increase community resistance and methane yield by up to 336%
Proceedings of the Air and Waste Management Association's Annual Conference and Exhibition, AWMA, 3, 1581–1589.
2015 journal article
Population balance models: a useful complementary modelling framework for future WWTP modelling
Water Science and Technology, 71(2), 159–167.
2015 conference paper
Using 16s metagenomics to determine microbial population shifts associated with a 336% boost in methane yield during anaerobic co-digestion of grease waste
88th Annual Water Environment Federation Technical Exhibition and Conference, WEFTEC 2015, 8, 6112–6118.
2014 journal article
A protocol for the use of computational fluid dynamics as a supportive tool for wastewater treatment plant modelling
Water Science and Technology, 70(10), 1575–1584.
2014 journal article
Complete Proteomic-Based Enzyme Reaction and Inhibition Kinetics Reveal How Monolignol Biosynthetic Enzyme Families Affect Metabolic Flux and Lignin in Populus trichocarpa
The Plant Cell, 26(3), 894–914.
2014 journal article
Enhanced Nitrogen Removal by Rice Husk Amended Dynamic Membrane Bioreactors
Journal of Environmental Engineering, 140(11), 04014035.
2014 journal article
FOGISEW: Modeling FOG Deposit Formation in Sewer Collection System
Proceedings of the Water Environment Federation, 2014(4), 1–10.
2014 journal article
Factors that influence properties of FOG deposits and their formation in sewer collection systems
Water Research, 49, 92–102.
2014 journal article
Modeling a continuous flow ultraviolet Light Emitting Diode reactor using computational fluid dynamics
Chemical Engineering Science, 116, 524–535.
2014 journal article
Systems Biology of Lignin Biosynthesis in Populus trichocarpa: Heteromeric 4-Coumaric Acid:Coenzyme A Ligase Protein Complex Formation, Regulation, and Numerical Modeling
The Plant Cell, 26(3), 876–893.
2013 conference paper
A numerical method to simulate and assess the formation of Fats, Oils & Grease (FOG) deposits in a sewer collection system
86th Annual Water Environment Federation Technical Exhibition and Conference, WEFTEC 2013, 8, 5063–5068.
2013 conference paper
Developing Resilient Anaerobic Co-digesting Microbial Communities
86th Annual Water Environment Federation Technical Exhibition and Conference, WEFTEC 2013, 2, 764–770.
2013 journal article
Mechanisms of fat, oil and grease (FOG) deposit formation in sewer lines
Water Research, 47(13), 4451–4459.
2013 journal article
Monolignol pathway 4-coumaric acid: Coenzyme a ligases in Populus trichocarpa: Novel specificity, metabolic regulation, and simulation of coenzyme a ligation fluxes
Plant Physiology, 161(3), 1501–1516.
2013 journal article
Understanding the spatial formation and accumulation of fats, oils and grease deposits in the sewer collection system
Water Science and Technology, 68(8), 1830–1836.
2012 conference paper
Aerobic granulation can be induced by shear variability
WEFTEC 2012 - 85th Annual Technical Exhibition and Conference, 11, 6921–6926.
2012 journal article
Anaerobic co-digestion of fat, oil, and grease (FOG): A review of gas production and process limitations
Process Safety and Environmental Protection, 90(3), 231–245.
2012 conference paper
Anaerobic co-digestion of grease trap waste
WEFTEC 2012 - 85th Annual Technical Exhibition and Conference, 9, 5428–5434.
2012 journal article
Field Characterization of External Grease Abatement Devices
Water Environment Research, 84(3), 237–246.
2012 conference paper
Life cycle assessment of grease trap waste co-digestion, land application, and composting
WEFTEC 2012 - 85th Annual Technical Exhibition and Conference, 9, 5413–5418.
2012 conference paper
Understanding the spatial formation and accumulation of fats, oils and grease deposits in the sewer collection system
WEFTEC 2012 - 85th Annual Technical Exhibition and Conference, 13, 7989–7994.
2012 conference paper
Using computational fluid dynamics modeling to help inform assessment of low wavelength inactivation
American Water Works Association Annual Conference and Exposition 2012, ACE 2012, 6437–6451.
2011 journal article
Assessment of Internal and External Grease Interceptor Performance for Removal of Food-Based Fats, Oil, and Grease from Food Service Establishments
Water Environment Research, 83(9), 882–892.
2011 journal article
Cellulosic Substrates for Removal of Pollutants from Aqueous Systems: A Review 1. Metals
Bioresources, 6(2), 2161–2287.
2011 journal article
Evidence for fat, oil, and grease (fog) deposit formation mechanisms in sewer lines
Environmental Science & Technology, 45(10), 4385–4391.
2011 journal article
Microbial UV fluence-response assessment using a novel UV-LED collimated beam system
Water Research, 45(5), 2011–2019.
2011 journal article
Modeling tortuosity in thin fibrous porous media using computational fluid dynamics
Journal of Porous Media, 14(9), 791–804.
2011 conference paper
Numerical and experimental evaluation of UV light emitting diodes for drinking water disinfection
American Water Works Association Annual Conference and Exposition 2011, ACE 2011, 5666–5696.
2011 journal article
Optimization of waste stabilization pond design for developing nations using computational fluid dynamics
Ecological Engineering, 37(11), 1878–1888.
2011 journal article
Performance of grease abatement devices for removal of fat, oil, and grease
Journal of Environmental Engineering (New York, N.Y.), 137(1), 84–92.
2010 journal article
Modeling hydroxyl radical distribution and trialkyl phosphates oxidation in UV-H2O2 photoreactors using computational fluid dynamics
Environmental Science & Technology, 44(16), 6233–6241.
2010 journal article
Modeling the UV/hydrogen peroxide advanced oxidation process using computational fluid dynamics
Water Research, 44(6), 1797–1808.
2009 conference paper
A CFD modeling protocol for simulating the UV/H2O2 advanced oxidation process
Water Quality Technology Conference and Exposition 2009, 1795–1816.
2009 journal article
Assessing the impact of upstream hydraulics on the dose distribution of ultraviolet reactors using fluorescence microspheres and computational fluid dynamics
Environmental Engineering Science, 26(5), 947–959.
2009 journal article
Celebrating a milestone in population balance modeling
Chemical Engineering Science, 64(4), 627–627.
2008 conference paper
Analysis of a LPHO UV reactor under multiple upstream elbow configurations using UV sensitive fluorescent microspheres
American Water Works Association - American Water Works Association Association Annual Conference and Exposition, ACE 2008, 179–190.
2008 journal article
Application of non-biological surrogates for analysis of sequential disinfection continuous flow systems
Aqua (London, England), 57(4), 225–238.
2008 journal article
Properties influencing fat, oil, and grease deposit formation
Water Environment Research, 80(12), 2241–2246.
2007 conference paper
Evaluating sequential disinfection in continuous flow water treatment systems
American Water Works Association - Water Quality Technology Conference and Exposition 2007: Fast Tracks to Water Quality, 2074–2081.
2007 conference paper
Incorporation of micromixing models within CFD simulations describing UV-initiated advanced oxidation processes
American Water Works Association - AWWA Annual Conference and Exposition, ACE 2007, 388–401.
2007 conference paper
Modeling organics degradation with the UV/H2O2 advanced oxidation process using computational fluid dynamics
American Water Works Association - Water Quality Technology Conference and Exposition 2007: Fast Tracks to Water Quality, 3077–3093.
2007 journal article
Numerical simulation of UV disinfection reactors: Evaluation of alternative turbulence models
Applied Mathematical Modelling, 31(9), 1753–1769.
2007 journal article
Simulation of flocculation in stirred vessels - Lagrangian versus Eulerian
Chemical Engineering Research & Design, 85(A2), 207–219.
2006 journal article
Comparative inactivation of Bacillus subtilis spores and MS-2 coliphage in a UV reactor: Implications for validation
Journal of Environmental Engineering (New York, N.Y.), 132(12), 1554–1561.
2006 journal article
Effect of particles on ultraviolet light penetration in natural and engineered systems
Applied Optics, 45(8), 1844–1856.
2006 journal article
Impact of turbulent mixing on the performance of a CFD chloramine model
Environmental Engineering Science, 23(2), 341–356.
2006 journal article
Modeling spatial distribution of floc size in turbulent processes using the quadrature method of moment and computational fluid dynamics
Chemical Engineering Science, 61(1), 75–86.
2006 journal article
Numerical simulation of chloramines formation in turbulent flow using a multi-fluid micromixing model
Environmental Modelling Review & Software: With Environmental Data News, 21(8), 1198–1213.
2006 journal article
Numerical simulation of chloramines formation in turbulent flow using a multi-fluid micromixing model
Environmental Modelling and Software, 21(8), 1198–1213.
2005 journal article
Alternative approaches to modeling fluence distribution and microbial inactivation in ultraviolet reactors: Lagrangian versus Eulerian
Journal of Environmental Engineering (New York, N.Y.), 131(10), 1393–1403.
2005 journal article
Assessment of reduction equivalent fluence bias using computational fluid dynamics
Environmental Engineering Science, 22(5), 615–628.
2005 journal article
Determination of ultraviolet sensor location for sensor set-point monitoring using computational fluid dynamics
Journal of Environmental Engineering and Science, 4(SUPPL. 1), S33–43.
2005 journal article
Experimental measurements of fluence distribution in a UV reactor using fluorescent microspheres
Environmental Science & Technology, 39(22), 8925–8930.
2005 conference paper
Experimental measurements of fluence distribution in a UV reactor using fluorescent microspheres
2005 Water Quality Technology Conference Proceedings, WQTC 2005.
2005 journal article
Impact of lamp shadowing and reflection on the fluence rate distribution in a multiple low-pressure UV lamp array
Water Research, 39(12), 2711–2721.
2005 journal article
UV disinfection of chlorinated water: impact on chlorine concentration and UV dose delivery
Aqua (London, England), 54(3), 189–199.
2004 journal article
A non-biological surrogate for sequential disinfection processes
Water Research, 38(14-15), 3400–3410.
2004 journal article
Evaluation of alternative fluence rate distribution models
Aqua (London, England), 53(6), 391–408.
2004 conference paper
Lessons for applying computational fluid dynamics modeling to disinfection clearwells
Bridging the Gap: Meeting the World's Water and Environmental Resources Challenges - Proceedings of the World Water and Environmental Resources Congress 2001, 111.
2004 journal article
Modeling low-energy mixers for chemical dispersion in water treatment
Environmental Engineering Science, 21(2), 241–261.
2004 conference paper
System-wide optimization of wastewater treatment plants using genetic algorithms
Bridging the Gap: Meeting the World's Water and Environmental Resources Challenges - Proceedings of the World Water and Environmental Resources Congress 2001, 111.
2003 journal article
Characterizing flocculation under heterogeneous turbulence
Journal of Colloid and Interface Science, 264(1), 184–194.
2003 journal article
Modeling nitrogen transport in duckweed pond for secondary treatment of swine wastewater
Journal of Environmental Engineering (New York, N.Y.), 129(8), 731–739.
2002 journal article
A two-scale PBM for modeling turbulent flocculation in water treatment processes
Chemical Engineering Science, 57(12), 2157–2168.
2002 conference paper
Characterization of drinking water treatment chemical mixing performance using CFD
Conference Proceedings - Joint 2002 CSCE/ASCE International Conference on Environmental Engineering - An International Perspective on Environmental Engineering, 427–443.
2002 journal article
Modeling of disinfection contactor hydraulics under uncertainty
Journal of Environmental Engineering (New York, N.Y.), 128(11), 1056–1067.
2002 journal article
Optimization of activated sludge designs using genetic algorithms
Water Science and Technology, 45(6), 187–198.
2002 book
Optimization of activated sludge designs using genetic algorithms
In Water Science and Technology (Vol. 45, pp. 187–198).
2001 journal article
The integrated disinfection design framework approach to reactor hydraulics characterization
Aqua (London, England), 50(4), 245–261.
2000 journal article
Determining disinfection needs
Journal (American Water Works Association), 92(5), 44–52.
1999 journal article
Turbulence in flocculators: Comparison of measurements and CFD simulations
AIChE Journal, 45(2), 432–436.
1998 journal article
The influence of tank size and impeller geometry on turbulent flocculation: I. Experimental
Environmental Engineering Science, 15(4), 215–224.
1998 journal article
The influence of tank size and impeller geometry on turbulent flocculation: II. Model
Environmental Engineering Science, 15(3), 225–235.
1997 journal article
Turbulence in flocculators: Effects of tank size and impeller type
AIChE Journal, 43(2), 328–338.
1990 conference paper
Docking assembly end effector for a two arm robot
American Society of Mechanical Engineers, Design Engineering Division (Publication) DE, 26, 271–278.