Dr. David A. Vaccari

School: Schaefer School of Engineering & Science
Department: Civil, Environmental and Ocean Engineering
Building: Rocco
Room: 306
Phone: 201.216.5570
Fax: 201.216.8739
Email: dvaccari@stevens.edu

Rutgers University, New Brunswick NJ

  • Ph.D. in Environmental Science (1984). Thesis: Modeling and Simulation of Compressive Gravity Thickening of Activated Sludge
  • M.S. in Chemical Engineering (1983). Thesis: Mean Cell Residence Time in a Nonsteady-state Activated Sludge System
  • M.S. in Environmental Science (1979)
  • B.S. in Environmental Science (1974).

Biological processes:

  • Control theory applied to the activated sludge process.
  • Modeling of compression in gravity thickening of sludge.
  • Nonlinear time-series analysis for system identification of secondary clarification.

Surface Water Quality:

  • Modeling of pathogens in surface water
  • Computing the Total Maximum Daily Load for streams

Resource Sustainability:

  • Forecasting of phosphorus production and consumption
  • Dynamic material flow analysis of resource usage

 System Modeling:

  • Nonlinear time-series analysis and correlation (Multivariate Polynomial Regression, or MPR).
  • Modeling and optimization of complex integrated systems, including integrated modeling of bioregenerative life support systems for long-term space travel.
Institutional Service

Insitutute Undergraduate Studies Committee (Chair)

Professional Service

Commissioner of ABET Engineering Accreditation Commission

Member of the New Jersey Science Advisory Board

Board of Trustees of the American Academy of Environmental Engineers and Scientists


Honors & Awards
  • Licensed Professional Engineer, New Jersey, 1989
  • S-4 Wastewater Treatment Plant Operator's License
    Stationary Engineer (High Pressure Boiler Operator's License)
  • International Assoc. on Water Quality USA National Committee Founders Award for outstanding paper in Water Research by an US author.
Professional Societies
  • Water Environment Federation (Technical Practice Committees for Wastewater Biology Manual of Practice and for Instrumentation and Control)
  • American Academy of Environmental Engineers
  • Engineering Education Committee
  • Participation as Accreditation Visitor
  • American Water Works Association
  • Association of Environmental Engineering Professors
  • International Association of Water Quality (Specialist Group on Computing)
  • ABET Accreditation Visitor for Bachelor of Environmental Engineering and Bachelor of Engineering Technology in Environmental Engineering
  • ABET Alternate Representative to the Technology Accreditation Commission
Selected Publications
  1. Watson, R., Nieradka, B. and Vaccari, D. A.. (2017). "Empirical Dynamic Material Flow Model for Tungsten in the USA", Journal of Industrial Ecology.
  2. Meng, Xiaoyang; Vaccari, David; Zhang, Jianfeng; Fiume, Antonio; Meng, Xiaoguang. (2014). "Bio-regeneration of Spent Anion Exchange Resin for Treatment of Nitrate in Water", Environmental Science & Technology, 48 1541-1548.
  3. Jagupilla, S.J.K. David A Vaccari, Robert Miskewitz. (2013). "Adjusting Error Calculation to Account for Temporal Mismatch in Evaluating Models", ASCE J. of Hydrologic Engineering, 19 (6), 1186-1193.
  4. Vaccari, D.A.and N. Strigul. (2011). "Extrapolating phosphorus production to estimate resource reserves", Chemosphere, 84 792-797.
  5. Jagupilla, S.J.K., D.A. Vaccari; R.I. Hires. (2010). "Multivariate Polynomial Time-Series Models and Importance Ratios to Identify Fecal Coliform Sources", ASCE Journal of Environmental Engineering, 136 (7), 657-665.
  6. Vaccari, D. A. and Wang, H. -K.. (2007). "Multivariate polynomial regression for identification of chaotic time series", Mathematical and Computer Modelling of Dynamical Systems, 13 (4), 395-412.
  7. Levri, J., and D.A. Vaccari. (2004). "Model Implementation for dynamic computation of system cost for advanced life support", Advances in Space Research, 34 (7), 1539-1545.
  1. Vaccari, D.A.. (2011). "Chemosphere Phosphorus Cycle Issue Introduction", Chemosphere, 84 735-736.
  2. Vaccari, D.A.. (2011). "Sustainability and the Phosphorus Cycle: Inputs, Outputs, Material Flow, and Engineering", 12 33-42.
  3. Vaccari, D.A.. (Apr 2010). "Solutions to Environmental Problems Phosphorus Cycle", Scientific American, 309 (4), 59.
  4. Vaccari, D.A.. (Jun 2009). "Phosphorus: A Looming Crisis", Scientific American, 300 (6), 54-59.
  1. Vaccari, D.A. and J. Levri.. (1999). "Multivariable Empirical Modeling of ALS Systems Using Polynomials", Life Support and Biosphere Science. 6 265-271.
  2. Cacossa, K. and D.A. Vaccari.. (Jul 1994). "Prediction of Continuous Thickening from Batch Experiments", Water Science and Technology.
  3. Cacossa, K. and D.A. Vaccari.. (1994). "Prediction of Continuous Thickening from A Single Batch Experiment", Water Science Technology. 30 (8), 107-116.
  4. Christodoulatos, C., D.A. Vaccari.. (1993). "Correlations of Performance for Activated Sludge Using Multiple Regression with Autocorrelation", Water Research . 27 (1), 51-62.
  5. Vaccari, D.A. and C. Christodoulatos.. (1992). "Generalized Multiple Regression with Interaction and Nonlinearity for System Identification in Biological Treatment Processes", Trans. Instr. Soc. Am.. 31 (1), 97-102.
  6. Vaccari, D.A., and C. Christodoulatos.. (1989). "A Comparison of Several Control Algorithms for Activated Sludge Waste Rate", Wat. Sci. Tech. . 21 1249-1260.
  7. Vaccari, D.A., M. Kaouris.. (1988). "A Model for Irreversible Adsorption Hysteresis", J. Env. Sci and Health, Part A -- Env. Sci. and Engg. . 23 (8).
  8. Vaccari, D.A., T. Fagedes, and J. Longtin.. (1985). "Mean Cell Residence Time in a Nonsteady-State Activated Sludge System", Biotechnology and Bioengineering. 27 695-703.
  1. Vaccari, D.A., P.F. Strom, and J.E. Alleman. (2005). Environmental Biology for Engineers and Scientists, Wiley and Sons.
Conference Proceedings
  1. D. A. Vaccari. (Mar 24-26, 1996). "Nonlinear Analysis of Retail Performance", D.A. Vaccari, presented at the IEEE/IAFE Conf. on Computational Intelligence for Financial Engineering, New York, New York. .
  2. D.A. Vaccari and E. Wojciechowski.. (Jun 25-28, 1995). "Predicting Process Performance with Polynomials", WEF Specialty Conf. "Automating to Improve Water Quality", Minn., MN. .
  • EN 541 Fate and Transport of Environmental Contaminants
  • EN 345 Modeling and Simulation of Environmental Systems
  • EN 575 Environmental Biology
  • EN 680 Modeling of Environmental Systems
  • EN 423 Engineering Design VII
  • EN 424 Engineering Design VIII
  • EN 780 Nonlinear Correlation and System Identification
  • EN 377 Introduction to Environmental Engineering Systems