E2.02A Munasinghe-Arachchige 2018 ReNUWIt Annual Meeting Poster
Abstract/Contents
- Abstract
This work evaluated the following factors by which the POWER* system achieved significant pathogen inactivation: toxicity of algal metabolites; pH; temperature; sunlight, algal biomass and attachment to algal biomass. Laboratory experiments were conducted on samples drawn from a pilot scale POWER system deployed at the Las Cruces Wastewater Treatment Plant. Microtox tests showed that toxicity of algal system reduced from an initial value of 38.8% to zero ruling out algal metabolites as a factor causing inactivation of pathogenic bacteria. Low pH of 4 maintained in the POWER system is identified as the primary cause of bacteria inactivation. E. coli inactivation to undetectable levels was recorded in 24 hours under sunlight alone; but, accelerated under a combination of sunlight and presence of live algal cells, reaching undetectable levels within 12 hours.
Temperature (<50oC) and attachment of pathogens on to algal biomass are identified as insignificant factors in little contribution to inactivation of pathogenic bacteria.
Description
| Type of resource | other |
|---|---|
| Date created | May 2018 |
Creators/Contributors
| Author | Munasinghe-Arachchige, Srimali |
|---|---|
| Author | Delanka-Pedige, Himali |
| Author | Zhang, Yanyan |
| Author | Nirmalakhandan, Nagamany |
Subjects
| Subject | Re-inventing the Nation’s Urban Water Infrastructure |
|---|---|
| Subject | ReNUWIt |
| Subject | E2.02A |
| Subject | Efficient Engineered Systems |
| Subject | Energy and resource recovery |
| Subject | Las Cruces Wastewater Treatment Plant |
| Subject | Las Cruces |
| Subject | New Mexico |
| Subject | algal wastewater treatment |
| Subject | bacteria |
| Subject | dissolved oxygen |
| Subject | escherichia coli |
| Subject | growth |
| Subject | microbial community |
| Subject | microorganisms |
| Subject | organic carbon |
| Subject | pathogen inactivation |
| Subject | pathogens |
| Subject | recovery |
| Subject | removal |
| Subject | substances |
| Subject | sunlight |
| Subject | survival |
| Subject | temperature |
| Subject | toxicity |
Bibliographic information
| Related Publication | Delanka-Pedige, H. M. K., Munasinghe-Arachchige, S. P., Cornelius, J., Henkanatte-Gedera, S. M., Tchinda, D., Zhang, Y. Y., & Nirmalakhandan, N. (2019). Pathogen reduction in an algal-based wastewater treatment system employing Galdieria sulphuraria. Algal Research-Biomass Biofuels and Bioproducts, 39. http://doi.org/10.1016/j.algal.2019.101423 |
|---|---|
| Related Publication | Munasinghe-Arachchige, S. P., Delanka-Pedige, H. M. K., Henkanatte-Gedera, S. M., Tchinda, D., Zhang, Y. Y., & Nirmalakhandant, N. (2019). Factors contributing to bacteria inactivation in the Galdieria sulphuraria-based wastewater treatment system. Algal Research-Biomass Biofuels and Bioproducts, 38. http://doi.org/10.1016/j.algal.2018.101392 |
| Location | https://purl.stanford.edu/tc489ss5542 |
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- License
- This work is licensed under an Open Data Commons Attribution License v1.0.
Preferred citation
- Preferred Citation
- Munasinghe-Arachchige, Srimali and Delanka-Pedige, Himali and Zhang, Yanyan and Nirmalakhandan, Nagamany. (2018). E2.02A Munasinghe-Arachchige 2018 ReNUWIt Annual Meeting Poster. Stanford Digital Repository. Available at: https://purl.stanford.edu/tc489ss5542
Collection
Re-inventing the Nation's Urban Water Infrastructure (ReNUWIt)
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- Contact
- nkhandan@nmsu.edu
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