4 research outputs found
Improved hydrological modeling using AGWA; incorporation of different management practices in hydrological modeling.
AGU Fall meeting 201
Microbial Water Quality through a Full-Scale Advanced Wastewater Treatment Demonstration Facility
The fates of viruses,
bacteria, and antibiotic resistance
genes
during advanced wastewater treatment are important to assess for implementation
of potable reuse systems. Here, a full-scale advanced wastewater treatment
demonstration facility (ozone, biological activated carbon filtration,
micro/ultrafiltration, reverse osmosis, and advanced oxidation) was
sampled over three months. Atypically, no disinfectant residual was
applied before the microfiltration step. Microbial cell concentrations
and viability were assessed via flow cytometry and adenosine triphosphate
(ATP). Concentrations of bacteria (16S rRNA gene), viruses (human
adenovirus and JC polyomavirus), and antibiotic resistance genes (sul1 and blaTEM) were assessed via quantitative PCR following the concentration
of large sample volumes by dead-end ultrafiltration. In all membrane
filtration permeates, microbial concentrations were higher than previously
reported for chloraminated membranes, and log10 reduction
values were lower than expected. Concentrations of 16S rRNA and sul1 genes were reduced by treatment but remained quantifiable
in reverse osmosis permeate. It is unclear whether sul1 in the RO permeate was from the passage of resistance genes or new
growth of microorganisms, but the concentrations were on the low end
of those reported for conventional drinking water distribution systems.
Adenovirus, JC polyomavirus, and blaTEM genes were reduced below the limit of detection
(∼10–2 gene copies per mL) by microfiltration.
The results provide insights into how treatment train design and operation
choices affect microbial water quality as well as the use of flow
cytometry and ATP for online monitoring and process control
Data and Code for Hungry Caterpillars
An archive folder containing the 54 files needed to reproduce the results and figures reported in 'Varyingly Hungry Caterpillars: Predictive Models and Foliar Chemistry Suggest How to Eat a Rainforest'. The folder includes both raw data and files for analysis and one README file. Each file is described in the README file and is presented in the same order as in the R file containing the script necessary for the analyses
dietBreadthArchived
Diet breadth data: each row indicates the number of herbivores ("Count") with a given diet breadth at a given site. Further details (such as species or family-level diet breadth) under the "Data" column