Graduate

Environmental Engineering

Eawag, the Swiss Federal Institute of Aquatic Science and Technology, is a Swiss-based but internationally active research institute within the domain of the ETH (Swiss Federal Institute of Science and Technology). It is committed to the ecologically, economically and socially responsible management of water.

The Department of Environmental Engineering seeks to recruit

THREE PHD POSITIONS IN ENVIRONMENTAL ENGINEERING

PHD PROJECT 1:
REDUCING BIOLOGICAL SLUDGE PRODUCTION
The aim of the first PhD project is to evaluate mechanisms that can increase the degradability of particulate organic matter and reduce overall sludge production. Handling and disposal of waste activated sludge results in significant costs. Sludge management is a major concern for the operation of small and decentralized wastewater treatment systems. This project is focused on biological processes that enhance endogenous decay of active biomass and/or increase hydrolysis of particulate organic matter. A significant reduction in sludge production can, for example, be observed in response to cyclic exposure aerobic, anaerobic, and low oxidation reduction potential (ORP) conditions. In addition to influencing overall sludge production, cyclic exposure to different redox conditions will also influence the conversion of many micropollutants that are otherwise not degraded. But biological mechanisms leading to reduced sludge production are not well understood.
The goal is to evaluate sludge reduction processes within the broader context of overall system performance, costs, and the overall energy balance of wastewater treatment in centralized and decentralized systems. This PhD project should develop a mechanistic understanding of the underlying biological processes, develop a mathematical modeling approach to describe relevant processes, and provide guidance for design and operation of sludge reduction processes.

PHD PROJECT 2:
INFLUENCE OF MASS TRANSPORT LIMITATIONS ON AMMONIA OXIDATION/ANAMMOX
The aim of the second PhD project is to evaluate the influence of floc size and structure on the stability of a single reactor ammonia oxidation/anammox process. Ammonia oxidation/anammox in a single reactor is a new process that has been introduced in full-scale plants for nitrogen removal from concentrated nitrogen streams. The single reactor nitrogen removal process is beneficial as it allows uncoupling the removal of organic carbon and nitrogen allowing for more organic carbon to be directed to anaerobic digestion for energy production. Full-scale experience has shown that the single reactor nitrogen removal is very efficient – but also that periodically the process can become unstable.
The goal for this PhD project is to evaluate the influence of mass transport limitations in different types of aggregates (flocs, granules, biofilms on suspended carriers) for understanding the influence on process efficiency and also the stability in response to dynamic operating conditions. Mass transport limitations are necessary in this process to provide aerobic conditions for ammonia oxidation and anaerobic conditions for anammox. Advanced imaging using confocal laser scanning microscopy (CLSM) and optical coherence tomography (OCT) followed by advanced image analysis will be used to quantify aggregate size and structure. The abundance of ammonia and nitrite oxidizing bacteria as well as anammox bacteria will be monitored using fluorescent in situ hybridization (FISH) and quantitative real time polymerase chain reaction (qPCR). Linking the analysis of aggregate size and structure with abundance and distribution of relevant bacteria in these aggregates and with the physiological response of the system will allow to better understand the underlying mechanism leading to system instability and will allow to develop a mathematical model and monitoring approach that is suitable to guide practical design and operation of single reactor ammonia oxidation/anammox processes.

PHD PROJECT 3:
INTERACTIONS OF SUSPENDED CULTURES AND BIOFILMS
The aim of this PhD project is to evaluate the interaction of the microbial communities in biofilms and suspended in the water phase. Overall rates and specific mechanisms of attachment and detachment of microorganisms and particulate matter will depend on the biofilm structure and on mixing conditions within the system. The main focus in this project will be on evaluating biofilms involved in membrane fouling. But results are also relevant and will be evaluated in hybrid bioreactor systems (i.e., combining biofilms growing on suspended carriers and activated sludge in one system) and in fixed bed biofilm reactors. While the project is based on practical systems the focus will be on evaluating fundamental mechanisms of how biofilm structure influences the ability of suspended bacteria to colonize a surface and under what extent detached biofilm will influence the composition and function of the suspended microbial community. Biofilm and suspended biomass structure will be imaged using confocal laser scanning microscopy (CLSM) and optical coherence tomography (OCT) followed by advanced image analysis. The microbial communities will be characterized using fluorescent in situ hybridization (FISH) and denaturing gradient gel electrophoresis (DGGE).
The goal is to develop an improved understanding of conditions resulting in similar or different microbial communities in the biofilm and in suspension and how these interactions between biofilm and suspended cultures are relevant for process performance. The evaluation of fundamental mechanisms should be linked to developing mathematical models and testing the relevance for selected engineering applications.

We are looking for independent and motivated students with a broad background and interest in wastewater treatment, mathematical modeling, microbiology, and engineering applications. The candidates should hold an MS degree in Environmental Engineering, Environmental Sciences, Civil Engineering, or similar. Eawag offers an interdisciplinary and international environment with ongoing PhD studies in related areas, with excellent research infrastructure, and with strong links to the engineering practice.

The three positions start as soon as possible. The duration of the PhD program at ETH-Zurich is generally three years. Applications should include a cover letter describing the applicant’s motivation for pursuing a PhD, a complete resume, and contact information for three references. The cover letter should indicate which of the project(s) the applicant is interested in. Copies of prior publications or theses will also be considered if made available as PDF.

Please submit your application – including CV, motivation letter, and copies of academic qualifications and references – in electronic form as one single PDF file to Sandra Egler, Human Resources Department recruiting@eawag.ch, indicating PhD project number and reference number 104501. The deadline for applications is 15 August 2010.
For further information, consult www.eawag.ch or contact:

Prof. Eberhard Morgenroth Email eberhard.morgenroth@eawag.ch

Environmental Engineer

Environmental Engineer: Utilize experience with performing environmental consulting associated with soil and groundwater contamination, including field activities, such as drilling, soil and groundwater sampling and analysis. Perform “green buildings” environmental analysis, modeling and retrofit, as well as environmental compliance and prepare reports. MS in Civil & Environmental Engineering + CA “Engineer In Training” & LEED AP certification required. Send resume: Enviropro Inc., 9765 Eton Ave., Chatsworth CA 91311

Environmental Biotechnology

Drs. Eric Seagren and Jennifer Becker are jointly looking for an outstanding Ph.D. student to work on a National Science Foundation-funded project focusing on bioremediation of dense nonaqueous-phase liquid (DNAPL) contaminant source zones in the Department of Civil and Environmental Engineering at Michigan Technological University. The project will combine experimental evaluations involving microfluidics and molecular biology techniques with numerical modeling. Previous experience in the first two areas is especially desirable. The successful applicant must have strong English communication skills and an excellent academic record, including a M.S. degree and/or work experience in environmental, chemical, or biological engineering, microbiology or a related engineering or science discipline. The position will be funded through research and/or teaching assistantships that provide a stipend, tuition remission, health benefits, and travel support to attend professional meetings. Prospective candidates are encouraged to submit a CV, unofficial transcript, statement of research interests, and names and contact information for at least two referees via e-mail to Drs. Eric Seagren (eseagren@mtu.edu) and Jennifer Becker (jgbecker@mtu.edu). Please use "DNAPL Ph.D. assistantship" in the e-mail subject line. Review of the applications will continue until the position is filled. The ideal start date will be between August 2010 or January 2011. The environmental engineering program at Michigan Tech is among the top 30 graduate programs, according to the most recent US News and World Report rankings. More information on the Department of Civil and Environmental Engineering can be found at http://www.cee.mtu.edu/. Michigan Tech is located in Houghton, on Michigan's scenic Upper Peninsula, which offers unparalleled opportunities for outdoor recreation, such as backpacking, hiking, camping, boating, mountain biking, and skiing.

Environmental Chemistry

Dynamics of novel bioaccumulative pollutants in Lake Geneva; A sampling campaign aided by manned submarine. Project Description. Located at the crossroads of industrialized Europe, Lake Geneva is a large, deep lake that endures diverse pollutant inputs from industry, wastewater, agriculture, and atmospheric deposition. Due to it's depth, geographic situation, and geochemical heterogeneity, the physical and chemical structure of the lake is complex, and it is not possible to easily apply conventional models of chemical transport and fate. As part of a larger study of chemical processes in Lake Geneva, we will launch an unconventional field campaign led by sampling of sediments and the water column using the Mir submarine. The PhD project will focus on analysis and modeling of the distribution, fluxes, transport, and chemistry of persistent organic pollutants in the lake. Target pollutants include several novel bioaccumulative compounds that have been recently hypothesized but not yet searched for in the environment. Available analysis technologies will include Comprehensive Two-Dimensional Gas Chromatography - Time of Flight Mass Spectrometry (GCxGC-TOFMS), Liquid Chromatography - Tandem Mass Spectrometry (LC-MS/MS), and other cutting edge facilities at EPFL. Necessary background. The ideal candidate would have knowledge in several of the following areas: environmental chemistry, mathematical modeling, trace analysis, organic chemistry, gas chromatography, limnology, and a spirit of adventure. A Bachelor or Masters level degree is required. Fluency in English is required. Start date. September 1, 2010, or as soon as possible. The expected duration of the project is 3 to 4 years. Salary. The post is fully funded, with remuneration similar to $50k/year. Contact. Please send a CV, statement of interest, and list of three references to Prof. Samuel Arey, samuel.arey@epfl.ch. Environmental Chemistry Modeling Laboratory, EPFL Lausanne, Switzerland http://lmce.epfl.ch

Water and Sanitation

Field research manager: Water, sanitation, hygiene & health in Africa A field researcher manager is sought to work on an NSF-funded project entitled "Multi-scale modeling of health behavior choices: Water, sanitation, and child survival in Africa". The researcher will work with Profs. Jenna Davis and Alexandria Boehm at Stanford University in the Dept. of Civil and Environmental Engineering, but will largely be based in Tanzania. The successful applicants should have experience managing data collection teams in resource constrained settings. Prior experience in a low- or middle-income country is essential. An ideal candidate will have experience in the water, sanitation, and/or hygiene fields; be knowledgeable about microbiological methods; and have experience with household survey development and implementation. Skills in data management, quantitative analysis and statistics are highly desirable, as are Swahili language skills. The successful applicant will be flexible, dependable, and a team player. S/he must be an effective manager within cross-cultural and multi-disciplinary teams. A graduate degree, or an undergraduate degree and extensive prior field experience, is required. The initial appointment will be for 9 months, with the possibility of extension if successful progress is made. The start date is negotiable, but 1 June 2010 would be ideal. To apply, please send a current CV, a cover letter describing your experience and interest in the project, and the names, email addresses, and phone numbers of three references to julieste@stanford.edu by 23 April 2010.

Environmental Chemistry

Villanova University has been ranked #1 by U.S. News and World Report for over a decade, in the Best Universities-Masters category in the northern region. Located just outside of Philadelphia, PA, the area offers an abundance of culture, food, and leisure activities.

The Environmental and Water Resources Engineering Program division of the Civil and Environmental Engineering Department has an available Master’s level Research Assistant position in the Environmental Chemistry Research Group starting Fall 2010. Full tuition and fees remission is available for two years along with a monthly stipend for the nine month academic year, with an opportunity for an additional stipend for the summer period. The Environmental Chemistry laboratories house state-of-the-art analytical instrumentation for water and air analyses (e.g., GC/MS, LC/MS/MS), and the Nanotechnology Laboratory within the College of Engineering has extensive surface characterization capabilities (e.g., TEM-EDS, SEM-EDAX, Mössbauer spectroscopy, AFM).

Applicants should have a Bachelor’s degree in Engineering, Chemistry, or related field, prior research experience, and an interest in conducting research in the area of Environmental Chemistry and Technology Development. Ongoing research is focused on remediation of recalcitrant contaminants and pathogens in drinking water and wastewater by the development of novel electrochemical and catalytic technologies. A primary focus of the research is to develop these technologies in a sustainable manner to help facilitate water reuse and reduce fossil fuel usage.

Interested applicants should send a resume along with a brief statement of interest to Dr. Brian Chaplin at brian.chaplin@villanova.edu. More information on Dr. Chaplin’s research can be found at www.brianchaplin.webnode.com. For more information about graduate school and admission requirements visit www.villanova.edu. Prompt submittal of application materials to the graduate school is highly recommended to ensure full consideration for the position.

SAfe Drinking Water using Appropriate Technologies for Ghana (SADWAT-GHANA)

SADWAT-GHANA is a project funded by a Leverhulme Royal Society Africa Award (2010-2012) with a number of collaborators in Scotland and Ghana. The overall project aims to develop locally sustainable technology that can remove natural as well as anthropogenic metals (F, NO3, U, As) occurring in ground- and surface waters in rural Ghana simultaneously with microbiological contaminants. For full description please visit http://www.see.ed.ac.uk/postgraduate/studentships/Institutes/IIE.html#SA...

Clean Water from Clean Energy

Master and PhD students

Ecosystems Laboratory in Civil and Environmental Engineering department at University of Ulsan, South Korea is seeking for MS and PhD scholarship students with good English communication (written and oral) skills for the Fall semester in 2010 (to start from September). Research areas include: application of biological and physicochemical processes for environmental pollution control, practices in industrial ecology and environmental sustainability. Applicants with excellent background in Environmental, Civil or Chemical Engineering can contact Professor Hung-Suck Park (email: parkhs@ulsan.ac.kr) for further information. Please include the CV with a photograph and a description of your research interests. Our website: http://home.ulsan.ac.kr/esl

Environmental Science and Engineering

A Research Assistant is sought to assist in a research project at UMBC in the area of contaminated sediment remediation. This will be a 2 year position supported by a recently funded ARRA project from the National Institute of Environmental Health Sciences through the Superfund Basic Research and Training Program. The primary responsibilities of the position will involve: 1) assisting with a pilot research project for applying novel engineering methods for in-situ remediation of contaminated sediments, 2) help with sediment/water/tissue sample processing and analysis for toxic organic contaminants such as PCBs and DDT, 3) manage and maintain an organic analysis laboratory with several gas chromatographs and mass spectrometers.

Minimum qualifications: BS in chemical engineering, environmental engineering, environmental chemistry, chemistry, or associated fields.

Position is full-time and includes University benefits package. This is a grant-funded position wherein employment is contingent upon the renewal of the grant and carries no layoff or reinstatement rights.
Salary is commensurate with qualifications and experience.

For best consideration, send a cover letter highlighting their relevant experience and research interests, curriculum vitae, a list of three references by January 31, 2010 (resumes will be accepted until the position is filled) to:

Dr. Upal Ghosh Associate Professor and Graduate Program Director
Department of Civil and Environmental Engineering
University of Maryland Baltimore County
Technology Research Center Room 184
5200 Westland Blvd Baltimore, MD 21227
ughosh@umbc.edu
http://userpages.umbc.edu/~ughosh/
Phone: 410-455-8665; Fax: 410-455-6500

UMBC is an affirmative action/equal opportunity employer.