Dr. Christopher Hennigan promoted to Professor
Congratulations Dr. Christopher Hennigan on the successful promotion to the rank of Professor!
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Congratulations Dr. Christopher Hennigan on the successful promotion to the rank of Professor!
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faculty
hennigan
spring-2023
Chemical, Biochemical and Environmental Engineering
https://dev.my.umbc.edu/groups/cbee
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Chemical, Biochemical and Environmental Engineering
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Tue, 06 Jun 2023 09:06:21 -0400
New Publication by Hennigan lab
Journal of Hazardous Materials
The Hennigan Lab has a new paper, "Measurement artifacts in the dithiothreitol (DTT) oxidative potential assay caused by interactions between aqueous metals and phosphate buffer", which was just published in the Journal of Hazardous Materials.
The article is available here:
Highlights
• A bias in the dithiothreitol (DTT) oxidative potential (OP) assay is characterized.
• Metal precipitation in the assay is due to interactions with the PO4 buffer matrix.
• Metal precipitation in the DTT assay has a profound effect on the OP response.
• The artifact is affected by the PO4 buffer concentration and ionic strength.
• The assay artifact has implications for studies of particulate matter toxicity.
Abstract
Metals in particulate matter (PM) are hypothesized to have enhanced toxicity based on their ability to catalyze reactive oxygen species (ROS) formation. Acellular assays are used to measure the oxidative potential (OP) of PM and its individual components. Many OP assays, including the dithiothreitol (DTT) assay, use a phosphate buffer matrix to simulate biological conditions (pH 7.4 and 37 °C). Prior work from our group observed transition metal precipitation in the DTT assay, consistent with thermodynamic equilibria. In this study, we characterized the effects of metal precipitation on OP measured by the DTT assay. Metal precipitation was affected by aqueous metal concentrations, ionic strength, and phosphate concentrations in ambient PM sampled in Baltimore, MD and a standard PM sample (NIST SRM-1648a, Urban Particulate Matter). Critically, differences in metal precipitation induced differing OP responses of the DTT assay as a function of phosphate concentration in all PM samples analyzed. These results indicate that comparison of DTT assay results obtained at differing phosphate buffer concentrations is highly problematic. Further, these results have implications for other chemical and biological assays that use phosphate buffer for pH control and their use to infer PM toxicity.
CBEE faculty, Dr. Claire Welty, Professor of Department of Chemical, Biochemical and Environmental Engineering and Director of Center for Urban Environmental Research and Education, Drs. Lee Blaney, Upal Ghosh, Chris Hennigan, Brian Reed, Claire Welty, are also affiliated with the Interdisciplinary Consortium for Applied Research in the Environment (ICARE) are beneficiaries of successful collaborations between the three organizations.
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On a recent Friday, representatives of UMBC, the U.S. Geological Survey and the U.S. Environmental Protection Agency gathered in UMBC’s Albin O. Kuhn Library Gallery and pledged to work together...
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ghosh
hennigan
reed
research
spring-2023
welty
Chemical, Biochemical and Environmental Engineering
https://dev.my.umbc.edu/groups/cbee
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Thu, 11 May 2023 11:26:41 -0400
CBEE represented at 3MT semi-final for 3 consecutive years
Jayashree Yalamanchili, 2021 GEARS 3MT winner
Jayashree Yalamanchili, PhD candidate, participated in the semi-final 3MT competition during the 2022 Annual Meeting of the Conference of Southern Graduate Schools in Raleigh, NC. Her talk was titled "The fate of transition metals in phosphate-based acellular assays used to determine Particulate Matter (PM) reactivity". Jayashree is advised by Dr. Christopher Hennigan and Dr. Brian Reed.
Jayashree won the
GEARS 3MT conducted at UMBC in May 2021. She is the
third doctoral student in the department to win the GEARS 3MT and the fourth GEARS 3MT winner to be advised by a faculty member in CBEE.
3MT celebrates the exciting research conducted by Ph.D. students. Developed by The University of Queensland, the exercise cultivates students’ academic, presentation, and research communication skills. The competition supports their capacity to effectively explain their research in three minutes, in a language appropriate to a non-specialist audience.
We are exceedingly proud of Jayashree's success and that of CBEE students in past 3MT competitions!
A PhD student is sought for Fall 2022 to carry out a PhD project under Dr. Tyler Josephson's guidance on developing and applying molecular simulation techniques and artificial intelligence tools to gain molecular-scale insights on processes in the environment to enable new solutions for cleaner air and water.
Applicants should have a Masters or Bachelor’s degree in a related field and can apply to either the Environmental Engineering PhD program or the Chemical & Biochemical Engineering PhD program
Environmental Engineering PhD Program Overview
Applicant's prior coursework must include the completion of key prerequisites courses with a B or better. The prospective students must be admitted to the Environmental Engineering Doctoral program at University of Maryland, Baltimore County in the Department of Chemical, Biochemical and Environmental Engineering
Chemical & Biochemical Engineering PhD Program Overview
Applicant's prior coursework must include the completion of key prerequisites courses with a B or better. The prospective students must be admitted to the Chemical & Biochemical Engineering Doctoral program at University of Maryland, Baltimore County in the Department of Chemical, Biochemical and Environmental Engineering
Benefits:
Full-time PhD students admitted to the department are paid a stipend plus tuition remission and health insurance. The Fall 2022 PhD stipend is of $34,967/year.
Application Deadline: January 1, 2022
~~ UMBC is an EEO/AA employer. Individuals with disabilities, veterans, women and minorities are encouraged to apply. ~~
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A PhD student is sought for Fall 2022 to carry out a PhD project under Dr. Tyler Josephson's guidance on developing and applying molecular simulation techniques and artificial intelligence tools...
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assistantship
assistantship-2022
cheme
environmental-engineering
fall-2021
grad
hennigan
phd
research
Chemical, Biochemical and Environmental Engineering
https://dev.my.umbc.edu/groups/cbee
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Chemical, Biochemical and Environmental Engineering
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Tue, 09 Nov 2021 07:33:54 -0500
Tue, 09 Nov 2021 07:34:27 -0500
PhD Student Research Assistantship
Fall 2022 - Air Pollution, Atmospheric Chem. & Aerosol Sci.
A PhD student is sought for Fall 2022 to carry out a PhD project under Dr. Chris Hennigan's guidance on Air Pollution, Atmospheric Chemistry, and Aerosol Science.
Applicants should have a Masters or Bachelor’s degree in a related field. Their prior coursework must include the completion of key prerequisites courses with a B or better. The prospective students must be admitted to the Environmental Engineering Doctoral program at University of Maryland Baltimore County in the Department of Chemical, Biochemical and Environmental Engineering. Environmental Engineering PhD Program Overview
Benefits:
Full-time PhD students admitted to the department are paid a stipend plus tuition remission and health insurance. The Fall 2022 PhD stipend is of $34,967/year.
Application Deadline: January 1, 2022
~~ UMBC is an EEO/AA employer. Individuals with disabilities, veterans, women and minorities are encouraged to apply. ~~
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A PhD student is sought for Fall 2022 to carry out a PhD project under Dr. Chris Hennigan's guidance on Air Pollution, Atmospheric Chemistry, and Aerosol Science. Applicants should have a...
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assistantship-2022
environmental-engineering
fall-2021
grad
hennigan
phd
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Chemical, Biochemical and Environmental Engineering
https://dev.my.umbc.edu/groups/cbee
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Thu, 21 Oct 2021 13:49:06 -0400
Fri, 05 Nov 2021 09:45:23 -0400
Masters Student Trainee opportunity in the urban environment
FALL 2022
UMBC is seeking applicants in the following areas for urban environmental work:
Masters Student Traineeships - iCARE
The
iCARE NRT master’s degree is a 2-year interdisciplinary degree program with a dual mission of diversity, equity, inclusion, and justice combined with research focused on improving the health of Baltimore Harbor as a socioecosystem. Students will be mentored by a UMBC faculty member and a non-academic scientist from a government agency, non-profit, or industry. That research team will be embedded in a larger stakeholder team, meaning that each student and their mentors will identify one or more community members (non-scientists) with a stake in the research to be engaged in the research from development to completion.
Students will also be taking skills courses (community leadership, DEIJ, oral and written communication) and disciplinary courses appropriate to their research project.
Graduate students in our program will follow a two-year schedule that includes a series of professional and disciplinary courses, plus a research project that will comprise their master’s thesis. For the research project, students will be mentored by a team that includes at least one faculty member and one partner practitioner working on projects related to the Baltimore Harbor and surrounding environments.
Student Benefits Include:
- $34,000 annual stipend, full tuition coverage, fees, & health insurance.
- Up to $7,500 in research expenses.
- Mentoring and networking with employers across the environmental sector.
Students should apply to any of the five main departments at UMBC affiliated with the program: Biological Sciences; Chemical, Biochemical and Environmental Engineering; Geography and Environmental Systems; Marine Estuarine Environmental Sciences; or the School of Public Policy. They should also separately complete a short application to the ICARE program, available to view on our website here:
https://icare.umbc.edu/application/.
Here is a link to a
series of slides that describes what each of the ICARE faculty do especially with respect to the ICARE master's program.
Please pass this information on to prospective students and encourage them to contact us and complete the
ICARE Interest Form.
Students need to apply to their respective program at this
link and complete a supplemental
ICARE NRT application by
January 1, 2022 for the
Fall 2022 cohort.
Potential Environmental Engineering Mentors:
- Lee Blaney - contaminants of emerging concern & resource recovery
- Upal Ghosh - analysis and remediation of toxic pollutants in soils and other environments
- Brian Reed - removal of inorganic contaminants from the aqueous phase by activated carbons
- Christopher Hennigan - Processes governing atmospheric chemistry and aerosol pollution
- Claire Welty - quantify and predict the urban hydrologic cycle and coupled biogeochemical cycles from neighborhood to regional scales
One postdoctoral research associate position is available starting early 2022 in the Department of Chemical, Biochemical, and Environmental Engineering at the University of Maryland, Baltimore County. The selected candidate will be expected to work with Dr. Chris Hennigan on a DoE-funded research project focused on atmospheric multiphase chemistry. The project will characterize light-absorbing organic compounds (brown carbon) in atmospheric cloud water. The candidate will be expected to work closely with a Ph.D. student and undergraduate students, and to help in the training and mentoring of the students. The employee will also assist in drafting project reports, making presentations, writing new proposals, and drafting publications. Candidates with a PhD in Environmental Engineering, Chemical Engineering, Chemistry, or Environmental Science are preferred. Research experience in one or more of the following fields is desirable: aerosol chemistry, atmospheric trace gas measurements, organic aerosols, and environmental analytical chemistry.
Review of applications will begin December 1, 2021 and will continue until the position is filled.
Interested candidates should send a cover letter highlighting their relevant experience and research interests, curriculum vitae, and a list of three references as a single .pdf to Dr. Chris Hennigan (hennigan@umbc.edu).
~~ UMBC is an affirmative action/equal opportunity employer. ~~
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One postdoctoral research associate position is available starting early 2022 in the Department of Chemical, Biochemical, and Environmental Engineering at the University of Maryland, Baltimore...
Document
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funding
hennigan
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research
Chemical, Biochemical and Environmental Engineering
https://dev.my.umbc.edu/groups/cbee
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Tue, 05 Oct 2021 15:32:28 -0400
Fri, 05 Nov 2021 09:47:04 -0400