Environmental Engineering

Director of undergraduate studies: Jordan Peccia, 313C ML, 432-4385, jordan.peccia@yale.edu; seas.yale.edu/departments/chemical-and-environmental-engineering


Professors Michelle Bell (Forestry & Environmental Studies), Gaboury Benoit (Forestry & Environmental Studies), Ruth Blake (Geology & Geophysics), Stephen Edberg (School of Medicine), Menachem Elimelech (Chemical & Environmental Engineering), Thomas Graedel (Forestry & Environmental Studies), Edward Kaplan (School of Management), Yehia Khalil (Adjunct) (Chemical & Environmental Engineering), Lisa Pfefferle (Chemical & Environmental Engineering), Joseph Pignatello (Adjunct) (Chemical & Environmental Engineering), James Saiers (Forestry & Environmental Studies)

Associate Professors Jaehong Kim (Chemical & Environmental Engineering), Jordan Peccia (Chemical & Environmental Engineering), Julie Zimmerman (Chemical & Environmental Engineering)

Assistant Professors Drew Gentner (Chemical & Environmental Engineering), Desiree Plata (Chemical & Environmental Engineering)

Environmental engineering encompasses the scientific assessment and development of engineering solutions to environmental problems affecting land, water, and air (the biosphere). The field embraces broad environmental concerns, including the safety of drinking water, groundwater protection and remediation, wastewater treatment, indoor and outdoor air pollution, solid and hazardous waste disposal, cleanup of contaminated sites, the prevention of pollution through product and process design, and strategies for sustainable water and energy use and production.

Environmental engineers must balance competing technical, social, and legal issues concerning the use of environmental resources. Because of the complexity of these challenges, environmental engineers need a broad understanding not only of engineering disciplines but also of chemistry, biology, geology, and economics. Accordingly, the program allows students in the major to select an emphasis on environmental engineering technology, sustainability, global health, economics, or energy and climate change. The program prepares students for leadership positions in industry and government agencies or for further studies in engineering, science, business, law, and medicine.

Requirements of the major Two degree programs are offered: the B.S. in Environmental Engineering, and the B.A. in Engineering Sciences (Environmental). The B.S. degree program in Environmental Engineering is for students who desire a strong background in environmental engineering leading to a career in the field. The B.A. degree program in Engineering Sciences (Environmental) is intended for students whose careers will involve, but not be dominated by, the skills of environmental engineering. The B.A. program is appropriate for those contemplating a career in which scientific and technological problems can play an important role, as is often the case in law, business, medicine, or public service.

Prerequisites The B.S. degree program has the following prerequisites in mathematics and basic sciences: MATH 112, 115; MATH 120 or ENAS 151; ENAS 194; either CHEM 112 and 113 or 114 and 115 with 116L and 117L, or CHEM 118 and 119L by Advanced Placement test only; PHYS 180, 181; and BIOL 101 and 102 or 103 and 104. The B.A. degree program requires MATH 112 and 115; CHEM 112 and 113, or 114 and 115; and PHYS 170, 171.

B.S. degree program in Environmental Engineering The B.S. degree program requires at least twelve term courses beyond the prerequisites, including the senior requirement. Students take CENG 300 or MENG 211, ENVE 120, 360, 373, 377, and either 315 or 448, EVST 344, and MENG 361 or F&ES 714. At least three electives must be chosen in consultation with the director of undergraduate studies, preferably within one of the following tracks: environmental engineering technology, sustainability, global health, economics, or energy and climate change.

B.A. degree program in Engineering Sciences (Environmental) The B.A. degree program requires nine term courses beyond the prerequisites, including the senior requirement. Students take ENVE 120, 360, and either 373 or 377. Five electives must be chosen in consultation with the director of undergraduate studies.

Senior requirement Students in the B.S. program must pass ENVE 416 in their senior year. Students in the B.A. program must pass ENVE 490 in their senior year.

Credit/D/Fail No course taken Credit/D/Fail may count toward the major, including prerequisites.



Prerequisites MATH 112, 115; MATH 120 or ENAS 151; ENAS 194; either CHEM 112, 113 or 114, 115 with 116L, 117L, or CHEM 118 and 119L by AP test only; PHYS 180, 181BIOL 101 and 102 or 103 and 104

Number of courses 12 term courses beyond prereqs (incl senior req)

Specific courses required CENG 300 or MENG 211; ENVE 120, 360, 373, 377; ENVE 315 or 448; EVST 344; MENG 361 or F&ES 714

Distribution of courses 3 electives as specified

Senior requirement ENVE 416


PrerequisitesMATH 112, 115; either CHEM 112, 113 or 114, 115; PHYS 170, 171

Number of courses 9 term courses beyond prereqs (incl senior req)

Specific courses required ENVE 120, 360; ENVE 373 or 377

Distribution of courses 5 electives approved by DUS

Senior requirement ENVE 490


ENVE 101b / ENAS 101b / EVST 105b / MENG 101b, Energy, Engines, and Environment Staff

Energy sustainability and global warming; thermodynamic fundamentals; engines (combustion technologies, fossil-fuel pollution, carbon capture and sequestration). Wind, solar, biomass, and other renewable energy sources. Designed for freshmen and sophomores in science and engineering and for non–science majors. Prerequisite: A score of 4 or 5 on Advanced Placement examinations in mathematics and/or science.  SC
MW 2:30pm-3:45pm

* ENVE 120b / CENG 120b / ENAS 120b, Introduction to Environmental Engineering Staff

Introduction to engineering principles related to the environment, with emphasis on causes of problems and technologies for abatement. Topics include air and water pollution, global climate change, hazardous chemical and emerging environmental technologies. Prerequisites: high school calculus and chemistry or CHEM 114, 115 (may be taken concurrently) or permission of instructor.  QR, SC
TTh 1pm-2:15pm

ENVE 210a / CENG 210a, Principles of Chemical Engineering and Process Modeling Lisa Pfefferle

Analysis of the transport and reactions of chemical species as applied to problems in chemical, biochemical, and environmental systems. Emphasis on the interpretation of laboratory experiments, mathematical modeling, and dimensional analysis. Lectures include classroom demonstrations. Prerequisite: MATH 120 or permission of instructor.  QR, SCRP
MW 1pm-2:15pm

ENVE 315b / CENG 315b, Transport Phenomena Chinedum Osuji

Unified treatment of momentum, energy, and chemical species transport including conservation laws, flux relations, and boundary conditions. Topics include convective and diffusive transport, transport with homogeneous and heterogeneous chemical reactions and/or phase change, and interfacial transport phenomena. Emphasis on problem analysis and mathematical modeling, including problem formulation, scaling arguments, analytical methods, approximation techniques, and numerical solutions. Prerequisite: ENAS 194 or permission of instructor.  QR, SCRP
MW 1pm-2:15pm

ENVE 327a / F&ES 327a / G&G 327a, Atmospheric Chemistry Nadine Unger

The chemical and physical processes that determe the composition of the atmosphere; implications for climate, ecosystems, and human welfare. Origin of the atmosphere; photolysis and reaction kinetics; atmospheric transport of trace species; stratospheric ozone chemistry; tropospheric hydrocarbon chemistry; oxidizing power, nitrogen, oxygen, sulfur, and carbon cycles; interactions between chemistry, climate, and biosphere; aerosols, smog, and acid rain. Prerequisites: CHEM 115 or 118, and MATH 120, or equivalents. ENAS 194 recommended.  QR, SC

ENVE 360b / ENAS 360b, Green Engineering and Sustainable Design Paul Anastas and Julie Zimmerman

Study of green engineering, focusing on key approaches to advancing sustainability through engineering design. Topics include current design, manufacturing, and disposal processes; toxicity and benign alternatives; policy implications; pollution prevention and source reduction; separations and disassembly; material and energy efficiencies and flows; systems analysis; biomimicry; and life cycle design, management, and analysis. Prerequisites: CHEM 112, 113, or 114, 115, or permission of instructor.
MW 1pm-2:15pm

* ENVE 373a / CENG 373a, Air Pollution Control Drew Gentner

Kinetics, thermodynamics, and transport of chemical reactions of common air pollutants including suspended particulate matter. The role of surface chemistry and transport phenomena in air pollution. Pollutant dispersion modeling. Technology available to prevent or control air pollutants. Prerequisite: ENVE 210 or permission of instructor.  QR, SCRP
MW 11:35am-12:50pm

* ENVE 377a / CENG 377a, Water Quality Control Jordan Peccia

Study of the preparation of water for domestic and other uses and treatment of wastewater for recycling or discharge to the environment. Topics include processes for removal of organics and inorganics, regulation of dissolved oxygen, and techniques such as ion exchange, electrodialysis, reverse osmosis, activated carbon adsorption, and biological methods. Prerequisite: ENVE 120 or permission of instructor.  SCRP
TTh 2:30pm-3:45pm

* ENVE 410Lb, Environmental Technology in the Developing World Jaehong Kim

Practical application of environmental engineering fundamentals to solve real-world environmental and human-health problems in underdeveloped regions of the world. Issues related to water and wastewater treatment, water- and air-quality monitoring and control, subsurface remediation, and hygienic infrastructure. Includes a weeklong field trip to Nicaragua during spring break. Prerequisites: ENVE 373 and 377. Priority to Environmental Studies majors.  ½ Course cr
Th 12pm-3pm

ENVE 416b / CENG 416b, Chemical Engineering Process Design Paul Van Tassel and Desiree Plata

Study of the techniques for and the design of chemical processes and plants, applying the principles of chemical engineering and economics. Emphasis on flowsheet development and equipment selection, cost estimation and economic analysis, design strategy and optimization, safety and hazards analysis, and environmental and ethical considerations. Prerequisites: CENG 301 and 411.  QR, SCRP
TTh 9am-10:15am

[ ENVE 441, Biological Processes in Environmental Engineering ]

ENVE 448a, Environmental Transport Processes Menachem Elimelech

Analysis of transport phenomena governing the fate of chemical and biological contaminants in environmental systems. Emphasis on quantifying contaminant transport rates and distributions in natural and engineered environments. Topics include distribution of chemicals between phases; diffusive and convective transport; interfacial mass transfer; contaminant transport in groundwater, lakes, and rivers; analysis of transport phenomena involving particulate and microbial contaminants. Prerequisite: ENVE 120 or permission of instructor.  QR, SC
TTh 1pm-2:15pm

ENVE 473b, Air Quality and Energy Drew Gentner

The production and use of energy explored as a source of air pollution worldwide. Assessment of emissions and physical/chemical processes; the effects of emissions from energy sources; the behavior of pollutants in energy systems and in the atmosphere. Topics include traditional and emerging energy technology, climate change, atmospheric aerosols, tropospheric ozone, and transport/modeling/mitigation. Prerequisite: ENVE 373 or equivalent.  SC
MW 11:35am-12:50pm

* ENVE 490a or b, Senior Project Jordan Peccia

Individual research and design projects supervised by a faculty member in Environmental Engineering, or in a related field with permission of the director of undergraduate studies.