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Jing P, Peng L, Xu N, Feng Y, Liu X. Escherichia coli and phosphate interplay mediates transport of nanoscale zero-valent iron synthesized by green tea in water-saturated porous media. Colloids Surf B Biointerfaces 2022; 219:112783. [PMID: 36049251 DOI: 10.1016/j.colsurfb.2022.112783] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Revised: 08/04/2022] [Accepted: 08/18/2022] [Indexed: 10/31/2022]
Abstract
Green synthesized nano-zero-valent iron (GT-nZVI) has been considered an excellent material for in-situ soil remediation due to its high stability and environmental benignity. However, sufficient transportability of GT-nZVI downstream towards the contaminated sites, likely affected by the physicochemical properties of soil-groundwater, is required for improved in-situ remediation. Thus, the effect of soil components (i.e., bacteria and phosphate) on GT-nZVI transportability is significant. Hence, we studied the transport of GT-nZVI (Fe0 core wrapped by green tea polyphenols) with the existence of E. coli and phosphate in water-saturated porous sand media in NaCl and CaCl2 solutions at pHs 6.0 and 8.0. Also studied were the stability, surface characteristics, and two-site kinetics attachment modeling (TKAM) with Escherichia coli or/and phosphate. The results showed that phosphate could further enhance GT-nZVI co-transport with E. coli by increasing the negative charge on GT-nZVI at pH 6.0. However, E. coli reduced GT-nZVI mobility at pH 8.0 because the cell-cell interactions could mask the negative charges of pre-deposited GT-nZVI on E. coli, forming the large clusters between GT-nZVI and E. coli. Then, phosphate occurrence diminished E. coli inhibition by detaching GT-nZVI from nZVI-E. coli-phosphate polymers due to the stronger phosphate adsorption on E. coli than GT-nZVI at pH 8.0. Overall, TKAM describes the transport and retention of GT-nZVI adequately under various conditions, indicating the deposition order with k2str value as follows: GT-nZVI alone > with (w.) E. coli > w. phosphate > w. combined E. coli & phosphate at pH 6.0. By contrast, w. phosphate > w. E. coli > w. combined E. coli & phosphate > GT-nZVI alone ensued at pH 8.0. This investigation highlights the transport behavior of GT-nZVI associated with surface property changes in complex environments for effective in-situ remediation.
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Affiliation(s)
- Pengcheng Jing
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China; School of Chemistry and Life Sciences, Suzhou University of Science and Technology, Suzhou 215009, China
| | - Lei Peng
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China; School of Chemistry and Life Sciences, Suzhou University of Science and Technology, Suzhou 215009, China
| | - Nan Xu
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China.
| | - Yifei Feng
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China; School of Chemistry and Life Sciences, Suzhou University of Science and Technology, Suzhou 215009, China
| | - Xia Liu
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China
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Hong ZN, Jiang J, Li JY, Xu RK, Yan J. Adhesion mediated transport of bacterial pathogens in saturated sands coated by phyllosilicates and Al-oxides. Colloids Surf B Biointerfaces 2019; 181:215-225. [PMID: 31146245 DOI: 10.1016/j.colsurfb.2019.05.044] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2018] [Revised: 04/29/2019] [Accepted: 05/18/2019] [Indexed: 11/24/2022]
Abstract
The current knowledge of bacterial migration is mainly derived from work using bare or Fe-coated quartz sands as porous media. However, mineral coatings on quartz by phyllosilicates and Al-oxides prevail in natural soils, and their effect on bacterial transport remains unknown. Herein, we systematically explored the transport of two bacterial pathogens (Escherichia coli and Staphylococcus aureus) through saturated bare quartz and those coated by kaolinite (KaoQuartz), montmorillonite (MontQuartz) or Al-oxides (AlQuartz) under various solution ionic strength (IS) and pH levels. Elevating IS or decreasing pH discouraged bacterial mobility in all cases, with one exception for the migration of S. aureus through AlQuartz at various IS levels. E. coli showed a higher mobility than S. aureus in all cases. All the three coatings, especially the Al-oxides inhibited bacterial transport through quartz. Overall, the two phyllosilicates-coated sands showed transport behaviors (mobility trends with IS, pH, and cell type) similar to those for the bare quartz which could be explained by the Derjaguin-Landau-Verwey-Overbeek (DLVO) theory. Nevertheless, for transport within AlQuartz, there were deviations between the observations and the DLVO predictions, probably because of the existence of non-DLVO forces such as hydrophobic and chemical interactions. More importantly, the bacterial retention was found to correlate well with the adhesion regardless of the solution condition and the bacteria and media type, thereby revealing a central role of adhesion in mediating migration through mineral-coated sands. These findings highlight the significance of mineral coating and adhesion in pathogen dissemination in natural soils.
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Affiliation(s)
- Zhi-Neng Hong
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China
| | - Jun Jiang
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China
| | - Jiu-Yu Li
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China
| | - Ren-Kou Xu
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China.
| | - Jing Yan
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China
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Xu N, Cheng X, Wang D, Xu X, Huangfu X, Li Z. Effects of Escherichia coli and phosphate on the transport of titanium dioxide nanoparticles in heterogeneous porous media. WATER RESEARCH 2018; 146:264-274. [PMID: 30278381 DOI: 10.1016/j.watres.2018.09.047] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Revised: 09/19/2018] [Accepted: 09/21/2018] [Indexed: 06/08/2023]
Abstract
Transport behaviors of titanium dioxide nanoparticles (nTiO2) were examined in the individual- and co-presence Escherichia (E.) coli and phosphate in heterogeneous sand (uncoated and iron oxyhydroxide-coated sand) columns. The results showed that for the individual presence of phosphate, the degree of nTiO2 deposition was less in uncoated than in iron oxide-coated sands. In contrast, an opposite trend that greater deposition of nTiO2 in uncoated than in coated sands occurred in the individual presence of E. coli. These observations are due to the phosphate adsorption changing the charge of NPs and iron oxyhydroxide-coated sand, or the preferential adhesion of bacterial to coated sand. In the copresence of E. coli and phosphate, interestingly, the phosphate level plays an important role in influencing nTiO2 transport. At a high phosphate concentration (>1.0 mM), the deposition of nTiO2 with the individual presence of E. coli was stronger than nTiO2 in the copresence of both E. coli and phosphate, regardless of sand type. The potential mechanism was that phosphate adsorption led to the formation of more negatively charged NPs-bacteria complexes that have higher mobility in sand columns. At a low phosphate level (≤0.1 mM), a similar observation occurred in uncoated sand. Nevertheless, the deposition of nTiO2 with copresence of E. coli and phosphate was greater than nTiO2 with E. coli in oxyhydroxide-coated sand. It was attributed to the formation of large NPs-bacteria-phosphate clusters (less mobile) and the preferential adhesion of E. coli cells to iron oxyhydroxide coating simultaneously. Taken together, our findings provide crucial knowledge for better understanding the fate, transport, and potential risks of engineered nanoparticles in complicated environmental settings where bacteria and phosphate are ubiquitous.
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Affiliation(s)
- Nan Xu
- Jiangsu Key Laboratory of Environmental Functional Materials, School of Chemistry Biology and Material Engineering, Suzhou University of Science and Technology, Suzhou, 215009, China.
| | - Xueying Cheng
- Jiangsu Key Laboratory of Environmental Functional Materials, School of Chemistry Biology and Material Engineering, Suzhou University of Science and Technology, Suzhou, 215009, China
| | - Dengjun Wang
- National Research Council Resident Research Associate, U.S. Environmental Protection Agency, Ada, OK, 74820, USA
| | - Xiaoting Xu
- Jiangsu Key Laboratory of Environmental Functional Materials, School of Chemistry Biology and Material Engineering, Suzhou University of Science and Technology, Suzhou, 215009, China
| | - Xinxing Huangfu
- Jiangsu Key Laboratory of Environmental Functional Materials, School of Chemistry Biology and Material Engineering, Suzhou University of Science and Technology, Suzhou, 215009, China
| | - Zuling Li
- Jiangsu Key Laboratory of Environmental Functional Materials, School of Chemistry Biology and Material Engineering, Suzhou University of Science and Technology, Suzhou, 215009, China
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Li Q, Yang J, Fan W, Zhou D, Wang X, Zhang L, Huo M, Crittenden JC. Different transport behaviors of Bacillus subtilis cells and spores in saturated porous media: Implications for contamination risks associated with bacterial sporulation in aquifer. Colloids Surf B Biointerfaces 2018; 162:35-42. [DOI: 10.1016/j.colsurfb.2017.11.018] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2017] [Revised: 09/06/2017] [Accepted: 11/07/2017] [Indexed: 10/18/2022]
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Du L, Li S, Li X, Wang P, Huang Z, Tan Z, Liu C, Liao J, Liu N. Effect of humic acid on uranium(VI) retention and transport through quartz columns with varying pH and anion type. JOURNAL OF ENVIRONMENTAL RADIOACTIVITY 2017; 177:142-150. [PMID: 28667877 DOI: 10.1016/j.jenvrad.2017.06.016] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2017] [Revised: 06/11/2017] [Accepted: 06/17/2017] [Indexed: 06/07/2023]
Abstract
Humic acid (HA)1 is ubiquitous in the environment and is an important factor in the migration behavior of U(VI) in the geological medium. The present work investigated the effect of HA on the migration behavior of U(VI) using quartz column experiments at different pH values and in the presence of various anions. The U(VI) adsorption characteristics and speciation were also studied to illuminate further the migration behavior of U(VI). Our results indicated that, at pH 6.0, HA slightly increased the migration velocity of U(VI) during the initial phase and reduced the quantity of eluted U(VI) because of the formation of HA-U(VI). The relative concentration (c/c0) of U(VI)was higher in the HA-U system at pH 8.0 than that at pH 5.0 because of the higher solubility of HA in basic solutions and the difference in charge of HA-U(VI). In the U-HA-anion system at pH 6.0, the breakthrough pore volumes (PVs2) of U(VI) in electrolytes containing Cl- and SO42- anions (PV = 8) are much higher than for solutions containing phosphate (PV = 3), while the HA migration behavior was not significantly affected by the type of anion. Thus, the fast migration of U(VI) under HA and phosphate was attributed to phosphate rather than HA. This result suggests that phosphate should be given more attention in predictions of U(VI) migration, especially in regions with high groundwater phosphate content.
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Affiliation(s)
- Liang Du
- Key Laboratory of Radiation Physics and Technology, Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610064, PR China; Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang 621900, PR China
| | - Shicheng Li
- Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang 621900, PR China
| | - Xiaolong Li
- Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang 621900, PR China
| | - Ping Wang
- Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang 621900, PR China
| | - Zhaoya Huang
- Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang 621900, PR China
| | - Zhaoyi Tan
- Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang 621900, PR China
| | - Chunli Liu
- Beijing National Laboratory for Molecular Science (BNLMS), College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, PR China
| | - Jiali Liao
- Key Laboratory of Radiation Physics and Technology, Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610064, PR China
| | - Ning Liu
- Key Laboratory of Radiation Physics and Technology, Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610064, PR China.
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Zhong H, Liu G, Jiang Y, Yang J, Liu Y, Yang X, Liu Z, Zeng G. Transport of bacteria in porous media and its enhancement by surfactants for bioaugmentation: A review. Biotechnol Adv 2017; 35:490-504. [DOI: 10.1016/j.biotechadv.2017.03.009] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2016] [Revised: 03/20/2017] [Accepted: 03/22/2017] [Indexed: 12/13/2022]
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Liu G, Zhong H, Jiang Y, Brusseau ML, Huang J, Shi L, Liu Z, Liu Y, Zeng G. Effect of low-concentration rhamnolipid biosurfactant on Pseudomonas aeruginosa transport in natural porous media. WATER RESOURCES RESEARCH 2017; 53:361-375. [PMID: 28943669 PMCID: PMC5607479 DOI: 10.1002/2016wr019832] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The effect of low-concentrations of monorhamnolipid biosurfactant on transport of Pseudomonas aeruginosa ATCC 9027 in natural porous media (silica sand and a sandy soil) was studied with miscible-displacement experiments using artificial groundwater as the background solution. Transport of two types of cells was investigated, glucose- and hexadecane-grown cells with lower and higher cell surface hydrophobicity (CSH), respectively. The effect of hexadecane presence as a residual non-aqueous phase liquid (NAPLs) on transport was also examined. A clean-bed colloid deposition model was used to calculate deposition rate coefficients (k) for quantitative assessment. Significant cell retention was observed in the sand (81% and 82% for glucose- and hexadecane-grown cells, respectively). Addition of a low-concentration rhamnolipid solution enhanced cell transport, with 40 mg/L of rhamnolipid reducing retention to 50% and 60% for glucose- and hexadecane-grown cells, respectively. The k values for both glucose- and hexadecane-grown cells correlate linearly with rhamnolipid-dependent CSH represented as bacterial-adhesion-to-hydrocarbon rate of cells. Retention of cells by the soil was nearly complete (>99%). Addition of 40 mg/L rhamnolipid solution reduced retention to 95%. The presence of NAPLs in the sand increased the retention of hexadecane-grown cells with higher CSH. Transport of cells in the presence of the NAPL was enhanced by rhamnolipid at all concentrations tested, and the relative enhancement was greater than in was in the absence of NAPL. This study shows the importance of hydrophobic interaction on bacterial transport in natural porous media and the potential of using low-concentration rhamnolipid for facilitating the transport in subsurface for bioaugmentation efforts.
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Affiliation(s)
- Guansheng Liu
- State Key Laboratory of Water Resources and Hydropower Engineering Sciences, Wuhan University, Wuhan 430070, China
- School of Water Resources and Hydropower Engineering, Wuhan University, Wuhan 430070, China
| | - Hua Zhong
- State Key Laboratory of Water Resources and Hydropower Engineering Sciences, Wuhan University, Wuhan 430070, China
- School of Water Resources and Hydropower Engineering, Wuhan University, Wuhan 430070, China
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, China
| | - Yongbing Jiang
- The Sericultural Research Institute of Hunan Province, Changsha 410127, China
| | - Mark L Brusseau
- Department of Soil, Water and Environmental Science, University of Arizona, Tucson, Arizona 85721, U.S
| | - Jiesheng Huang
- State Key Laboratory of Water Resources and Hydropower Engineering Sciences, Wuhan University, Wuhan 430070, China
- School of Water Resources and Hydropower Engineering, Wuhan University, Wuhan 430070, China
| | - Liangsheng Shi
- State Key Laboratory of Water Resources and Hydropower Engineering Sciences, Wuhan University, Wuhan 430070, China
- School of Water Resources and Hydropower Engineering, Wuhan University, Wuhan 430070, China
| | - Zhifeng Liu
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, China
| | - Yang Liu
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, China
| | - Guangming Zeng
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, China
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Yang H, Ge Z, Wu D, Tong M, Ni J. Cotransport of bacteria with hematite in porous media: Effects of ion valence and humic acid. WATER RESEARCH 2016; 88:586-594. [PMID: 26558710 DOI: 10.1016/j.watres.2015.10.052] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2015] [Revised: 10/19/2015] [Accepted: 10/27/2015] [Indexed: 06/05/2023]
Abstract
This study investigated the influence of multiple colloids (hematite and humic acid) on the transport and deposition of bacteria (Escherichia coli) in packed porous media in both NaCl (5 mM) and CaCl2 (1 mM) solutions at pH 6. Due to the alteration of cell physicochemical properties, the presence of hematite and humic acid in cell suspensions significantly affected bacterial transport and deposition in quartz sand. Specifically, the presence of hematite (5 mg/L) decreased cell transport (increased cell deposition) in quartz sand in both NaCl and CaCl2 solutions, which could be attributed to the less negative overall zeta potentials of bacteria induced by the adsorption of positively charged hematite onto cell surfaces. The presence of a low concentration (0.1 mg/L) of humic acid in bacteria and hematite mixed suspensions reduced the adsorption of hematite onto cell surfaces, leading to increased cell transport in quartz sand in NaCl solutions, whereas, in CaCl2 solutions, the presence of 0.1 mg/L humic acid increased the formation of hematite-cell aggregates and thus decreased cell transport in quartz sand. When the concentration of humic acid was increased to 1 mg/L, enhanced cell transport was observed in both NaCl and CaCl2 solutions. The decreased adsorption of hematite onto cell surfaces as well as the competition of deposition sites on quartz sand with bacteria by the suspended humic acid contributed to the increased cell transport.
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Affiliation(s)
- Haiyan Yang
- The Key Laboratory of Water and Sediment Sciences, Ministry of Education, College of Environmental Sciences and Engineering, Peking University, Beijing 100871, PR China
| | - Zhi Ge
- The Key Laboratory of Water and Sediment Sciences, Ministry of Education, College of Environmental Sciences and Engineering, Peking University, Beijing 100871, PR China
| | - Dan Wu
- The Key Laboratory of Water and Sediment Sciences, Ministry of Education, College of Environmental Sciences and Engineering, Peking University, Beijing 100871, PR China
| | - Meiping Tong
- The Key Laboratory of Water and Sediment Sciences, Ministry of Education, College of Environmental Sciences and Engineering, Peking University, Beijing 100871, PR China.
| | - Jinren Ni
- The Key Laboratory of Water and Sediment Sciences, Ministry of Education, College of Environmental Sciences and Engineering, Peking University, Beijing 100871, PR China
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Min X, Han P, Yang H, Kim H, Tong M. Influence of sulfate and phosphate on the deposition of plasmid DNA on silica and alumina-coated surfaces. Colloids Surf B Biointerfaces 2014; 118:83-9. [DOI: 10.1016/j.colsurfb.2014.03.039] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2014] [Revised: 03/21/2014] [Accepted: 03/23/2014] [Indexed: 10/25/2022]
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