Interactive removal of bacterial and viral particles during transport through low-cost filtering materials
Pathogen filtration is critically important for water sanitation. However, it is a big challenge to balance removal efficiency and filtering material cost. In this study, we quantified the removal processes of a bacterial strain Escherichia coli 652T7 and a model bacteriophage MS2 (ATCC 15597-B1) du...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Frontiers Media S.A.
2022-08-01
|
| Series: | Frontiers in Microbiology |
| Subjects: | |
| Online Access: | https://www.frontiersin.org/articles/10.3389/fmicb.2022.970338/full |
| _version_ | 1811313788846080000 |
|---|---|
| author | Xijuan Chen Liqiong Yang Junjie Guo Shuang Xu Junzhen Di Jie Zhuang |
| author_facet | Xijuan Chen Liqiong Yang Junjie Guo Shuang Xu Junzhen Di Jie Zhuang |
| author_sort | Xijuan Chen |
| collection | DOAJ |
| description | Pathogen filtration is critically important for water sanitation. However, it is a big challenge to balance removal efficiency and filtering material cost. In this study, we quantified the removal processes of a bacterial strain Escherichia coli 652T7 and a model bacteriophage MS2 (ATCC 15597-B1) during their transport through columns containing iron filings (IF), calcined magnesite (CM), natural ore limestone (OL) or corn stalk biochar (BC) under saturated flow conditions. Experimental results showed that 99.98, 79.55, 63.79, and 62.59% of injected E. coli 652T7 and 98.78, 92.26, 68.79, and 69.82% of injected MS2 were removed by IF, CM, OL, and BC, respectively. The differences in removal percentage were attributed to the disparities of the microorganisms and filtering materials in surface function groups, surface charges, and surface morphology. Transport modeling with advection-dispersion equation (ADE) and interaction energy calculation with extended Derjaguin, Landau, Verwey, and Overbeek (XDLVO) model indicated that E. coli 652T7 and MS2 were mostly removed via irreversible attachment. In IF columns, E. coli 652T7 promoted the transport of MS2 but not vice versa. In CM columns, MS2 facilitated the transport of E. coli 652T7 and vice versa at a less extent. Such changes were a combined result of attachment site competition, steric effect, and mechanical straining. We found that the sum of the removal percentages of the two microorganisms in their respective transport experiments were similar to those calculated from their co-transport experiments. This result suggests that the removals were mainly limited by the attachment sites in the filtering materials. |
| first_indexed | 2024-04-13T11:01:08Z |
| format | Article |
| id | doaj.art-6fbef92b975a4398afa59978491cc3f7 |
| institution | Directory Open Access Journal |
| issn | 1664-302X |
| language | English |
| last_indexed | 2024-04-13T11:01:08Z |
| publishDate | 2022-08-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Microbiology |
| spelling | doaj.art-6fbef92b975a4398afa59978491cc3f72022-12-22T02:49:25ZengFrontiers Media S.A.Frontiers in Microbiology1664-302X2022-08-011310.3389/fmicb.2022.970338970338Interactive removal of bacterial and viral particles during transport through low-cost filtering materialsXijuan Chen0Liqiong Yang1Junjie Guo2Shuang Xu3Junzhen Di4Jie Zhuang5Key Laboratory of Pollution Ecology and Environmental Engineering, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, ChinaKey Laboratory of Pollution Ecology and Environmental Engineering, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, ChinaSchool of Civil Engineering, Liaoning Technical University, Fuxin, ChinaCollege of Land and Environment, Shenyang Agricultural University, Shenyang, ChinaSchool of Civil Engineering, Liaoning Technical University, Fuxin, ChinaDepartment of Biosystems Engineering and Soil Science, Center for Environmental Biotechnology, Institute for a Secure and Sustainable Environment, The University of Tennessee, Knoxville, TN, United StatesPathogen filtration is critically important for water sanitation. However, it is a big challenge to balance removal efficiency and filtering material cost. In this study, we quantified the removal processes of a bacterial strain Escherichia coli 652T7 and a model bacteriophage MS2 (ATCC 15597-B1) during their transport through columns containing iron filings (IF), calcined magnesite (CM), natural ore limestone (OL) or corn stalk biochar (BC) under saturated flow conditions. Experimental results showed that 99.98, 79.55, 63.79, and 62.59% of injected E. coli 652T7 and 98.78, 92.26, 68.79, and 69.82% of injected MS2 were removed by IF, CM, OL, and BC, respectively. The differences in removal percentage were attributed to the disparities of the microorganisms and filtering materials in surface function groups, surface charges, and surface morphology. Transport modeling with advection-dispersion equation (ADE) and interaction energy calculation with extended Derjaguin, Landau, Verwey, and Overbeek (XDLVO) model indicated that E. coli 652T7 and MS2 were mostly removed via irreversible attachment. In IF columns, E. coli 652T7 promoted the transport of MS2 but not vice versa. In CM columns, MS2 facilitated the transport of E. coli 652T7 and vice versa at a less extent. Such changes were a combined result of attachment site competition, steric effect, and mechanical straining. We found that the sum of the removal percentages of the two microorganisms in their respective transport experiments were similar to those calculated from their co-transport experiments. This result suggests that the removals were mainly limited by the attachment sites in the filtering materials.https://www.frontiersin.org/articles/10.3389/fmicb.2022.970338/fullco-transportattachmentsurface sites competitioniron filingscalcined magnesite |
| spellingShingle | Xijuan Chen Liqiong Yang Junjie Guo Shuang Xu Junzhen Di Jie Zhuang Interactive removal of bacterial and viral particles during transport through low-cost filtering materials Frontiers in Microbiology co-transport attachment surface sites competition iron filings calcined magnesite |
| title | Interactive removal of bacterial and viral particles during transport through low-cost filtering materials |
| title_full | Interactive removal of bacterial and viral particles during transport through low-cost filtering materials |
| title_fullStr | Interactive removal of bacterial and viral particles during transport through low-cost filtering materials |
| title_full_unstemmed | Interactive removal of bacterial and viral particles during transport through low-cost filtering materials |
| title_short | Interactive removal of bacterial and viral particles during transport through low-cost filtering materials |
| title_sort | interactive removal of bacterial and viral particles during transport through low cost filtering materials |
| topic | co-transport attachment surface sites competition iron filings calcined magnesite |
| url | https://www.frontiersin.org/articles/10.3389/fmicb.2022.970338/full |
| work_keys_str_mv | AT xijuanchen interactiveremovalofbacterialandviralparticlesduringtransportthroughlowcostfilteringmaterials AT liqiongyang interactiveremovalofbacterialandviralparticlesduringtransportthroughlowcostfilteringmaterials AT junjieguo interactiveremovalofbacterialandviralparticlesduringtransportthroughlowcostfilteringmaterials AT shuangxu interactiveremovalofbacterialandviralparticlesduringtransportthroughlowcostfilteringmaterials AT junzhendi interactiveremovalofbacterialandviralparticlesduringtransportthroughlowcostfilteringmaterials AT jiezhuang interactiveremovalofbacterialandviralparticlesduringtransportthroughlowcostfilteringmaterials |