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Predicting per- and polyfluoroalkyl substances removal in pilot-scale granular activated carbon adsorbers from rapid small-scale column tests.
AWWA Water Sci
March 2024
Department of Civil, Construction, and Environmental Engineering, North, Carolina State University, Raleigh, North, Carolina, USA.
Per- and polyfluoroalkyl substances (PFAS) occur widely in drinking water, and consumption of contaminated drinking water is an important human exposure route. Granular activated carbon (GAC) adsorption can effectively remove PFAS from water. To support the design of GAC treatment systems, a rapid bench-scale testing procedure and scale-up approach are needed to assess the effects of GAC type, background water matrix, and empty bed contact time (EBCT) on GAC use rates.
View Article and Find Full Text PDFField performance evaluation of low-cost PM sensors for enhancing spatial resolution of PM monitoring: a case study in the smart city of Sejong, Korea.
Environ Monit Assess
December 2024
Sejong Institute of Health and Environment, Twelve Seobukbu 2-Ro, Jochiwon-Eup, Sejong, 30015, Republic of Korea.
Article Synopsis
- National air quality standards have been established in many countries to address the health risks posed by PM2.5, with beta attenuation monitors (BAMs) being the standard for measuring PM concentrations, though they are costly.
- Low-cost PM sensors (LCSs) have emerged as a popular alternative for monitoring particulate matter, but questions about their data reliability persist, warranting further investigation in various environmental contexts.
- A study comparing 125 LCSs to BAMs found that while daily PM concentrations aligned, hourly data showed less reliability, indicating that data comparability varies by area, highlighting the need for localized PM monitoring strategies.
Low intensity mechanical signals promote proliferation in a cell-specific manner: Tailoring a non-drug strategy to enhance biomanufacturing yields.
Mechanobiol Med
December 2024
Department of Biomedical Engineering, College of Engineering and Applied Sciences, Renaissance School of Medicine, Stony Brook University, Stony Brook, NY, 11794-5280, USA.
Biomanufacturing relies on living cells to produce biotechnology-based therapeutics, tissue engineering constructs, vaccines, and a vast range of agricultural and industrial products. With the escalating demand for these bio-based products, any process that could improve yields and shorten outcome timelines by accelerating cell proliferation would have a significant impact across the discipline. While these goals are primarily achieved using or strategies, harnessing cell mechanosensitivity represents a promising - albeit less studied - pathway to promote bioprocessing endpoints, yet identifying which mechanical parameters influence cell activities has remained elusive.
View Article and Find Full Text PDFPerfluoroalkyl chemical adsorption by granular activated carbon: Assessment of particle size impact on equilibrium parameters and associated rapid small-scale column test scaling assumptions.
Water Res
March 2025
Center for Environmental Solutions & Emergency Response, U.S. Environmental Protection Agency, Cincinnati, OH 45268, USA. Electronic address:
Single-solute batch kinetic and isotherm experiments were conducted in Type 1 (18.2 MΩ·cm resistivity) water supplemented with 10 mM carbonate buffer (pH 7.75, 25 °C) for nine drinking water relevant perfluoroalkyl chemicals and three bituminous-coal based granular activated carbons (GACs).
View Article and Find Full Text PDFOpenFlume: An accessible and reproducible benchtop flume for research and education.
HardwareX
December 2024
Brown University, School of Engineering, 184 Hope St, Providence, RI 02912, United States of America.
Open-channel flumes are an important tool in fluid mechanics research and education. However, the few commercially available small-scale flumes are generally expensive and lack complete characterization. In this work, we present an open-source, low-cost, modular benchtop laboratory flume that is designed to be accessible and reproducible.
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