Abstract
Early detection of bacteria in water treatment is desired to mitigate system biofouling and potential human health impacts. This research involved the development of an antibody-based sensor, which was attached to a hydroxypropyl cellulose (HPC) modified cellulose acetate ultrafiltration membrane surface, to target bacteria. HPC was chosen because it collapses above and expands below a lower critical solution temperature (43. °C), thus allowing temperature modulation. The membrane had a high target recovery efficiency (10-18%) in both single bacterium and complex samples (simulated by adding organics and competitive organisms). Sensor recovery was decreased (to 5-7%) following temperature activation (above 50. °C) due to adverse impacts of temperature on the antibody. The membrane was able to be regenerated (with 0.1. M NaOH) and reused three consecutive times. The thermally responsive sensing membrane developed from this work was specifically developed to detect biofoulants in membrane-based water treatment processes. However, it could be adapted to address a range of environmental detection concerns, such as pathogen detection.
| Original language | English |
|---|---|
| Pages (from-to) | 116-123 |
| Number of pages | 8 |
| Journal | Desalination |
| Volume | 270 |
| Issue number | 1-3 |
| DOIs | |
| State | Published - Apr 1 2011 |
Bibliographical note
Funding Information:We are grateful to DARPA (Grant HR0011-07-1-0003 ) and NSF (CBET 0610624 ) for funding this research. We also wish to express our sincere thanks to Dr Steven Kloos and Ms Jessica Schloss of GE water and Process Technologies for providing membranes.
Funding
We are grateful to DARPA (Grant HR0011-07-1-0003 ) and NSF (CBET 0610624 ) for funding this research. We also wish to express our sincere thanks to Dr Steven Kloos and Ms Jessica Schloss of GE water and Process Technologies for providing membranes.
| Funders | Funder number |
|---|---|
| National Science Foundation (NSF) | CBET 0610624 |
| Defense Advanced Research Projects Agency | HR0011-07-1-0003 |
Keywords
- Antibody
- Detection
- Membrane
- Sensor
ASJC Scopus subject areas
- General Chemistry
- General Chemical Engineering
- General Materials Science
- Water Science and Technology
- Mechanical Engineering