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Ye J, Mao Y, Meng L, Li J, Li X, Xiao L, Zhang Y, Wang F, Deng H. Polycaprolactone-Modified Biochar Supported Nanoscale Zero-Valent Iron Coupling with Shewanella putrefaciens CN32 for 1,1,1-Trichloroethane Removal from Simulated Groundwater: Synthesis, Optimization, and Mechanism. Molecules 2023; 28:molecules28073145. [PMID: 37049906 PMCID: PMC10095663 DOI: 10.3390/molecules28073145] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 03/17/2023] [Accepted: 03/28/2023] [Indexed: 04/05/2023] Open
Abstract
1,1,1-Trichloroethane (1,1,1-TCA) is a typical organochloride solvent in groundwater that poses threats to human health and the environment due to its carcinogenesis and bioaccumulation. In this study, a novel composite with nanoscale zero-valent iron (nZVI) supported by polycaprolac-tone (PCL)-modified biochar (nZVI@PBC) was synthesized via solution intercalation and liquid-phase reduction to address the 1,1,1-TCA pollution problem in groundwater. The synergy effect and improvement mechanism of 1,1,1-TCA removal from simulated groundwater in the presence of nZVI@PBC coupling with Shewanella putrefaciens CN32 were investigated. The results were as follows: (1) The composite surface was rough and porous, and PCL and nZVI were loaded uniformly onto the biochar surface as micro-particles and nanoparticles, respectively; (2) the optimal mass ratio of PCL, biochar, and nZVI was 1:7:2, and the optimal composite dosage was 1.0% (w/v); (3) under the optimal conditions, nZVI@PBC + CN32 exhibited excellent removal performance for 1,1,1-TCA, with a removal rate of 82.98% within 360 h, while the maximum removal rate was only 41.44% in the nZVI + CN32 treatment; (4) the abundance of CN32 and the concentration of adsorbed Fe(II) in the nZVI@PBC + CN32 treatment were significantly higher than that in control treatments, while the total organic carbon (TOC) concentration first increased and then decreased during the culture process; (5) the major improvement mechanisms include the nZVI-mediated chemical reductive dechlorination and the CN32-mediated microbial dissimilatory iron reduction. In conclusion, the nZVI@PBC composite coupling with CN32 can be a potential technique to apply for 1,1,1-TCA removal in groundwater.
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Affiliation(s)
- Jing Ye
- School of Chemical and Environmental Engineering, Shanghai Institute of Technology, Shanghai 201418, China
| | - Yacen Mao
- School of Chemical and Environmental Engineering, Shanghai Institute of Technology, Shanghai 201418, China
| | - Liang Meng
- Key Lab of Eco-Restoration of Regional Contaminated Environment, Ministry of Education, Shenyang University, Shenyang 110044, China
- School of Environmental and Geographical Sciences, Shanghai Normal University, Shanghai 200234, China
- Yangtze River Delta Urban Wetland Ecosystem National Field Scientific Observation and Research Station, Shanghai 201722, China
- State Environmental Protection Key Laboratory of Synergetic Control and Joint Remediation for Soil & Water Pollution, Chengdu University of Technology, Chengdu 610059, China
| | - Junjie Li
- School of Environmental and Geographical Sciences, Shanghai Normal University, Shanghai 200234, China
- Yangtze River Delta Urban Wetland Ecosystem National Field Scientific Observation and Research Station, Shanghai 201722, China
| | - Xilin Li
- School of Environmental and Geographical Sciences, Shanghai Normal University, Shanghai 200234, China
- Yangtze River Delta Urban Wetland Ecosystem National Field Scientific Observation and Research Station, Shanghai 201722, China
| | - Lishan Xiao
- School of Environmental and Geographical Sciences, Shanghai Normal University, Shanghai 200234, China
- Yangtze River Delta Urban Wetland Ecosystem National Field Scientific Observation and Research Station, Shanghai 201722, China
| | - Ying Zhang
- The Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration, East China Normal University, Shanghai 200241, China
| | - Fenghua Wang
- School of Geographical Sciences, Hebei Normal University, Shijiazhuang 050024, China
| | - Huan Deng
- School of Environment, Nanjing Normal University, Nanjing 210023, China
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Menazea AA, Mostafa MS, Awwad NS, Elhosiny Ali H, Moustapha ME, Bajaber MA. Improvement of Medical Applicability of Hydroxyapatite/Antimonous Oxide/Graphene Oxide Mixed Systems for Biomedical Application. J Inorg Organomet Polym Mater 2022. [DOI: 10.1007/s10904-022-02355-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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El-Morsy R, Afifi M, Ahmed M, Awwad NS, Ibrahium HA, Alqahtani MS. Electrospun nanofibrous scaffolds of polycaprolactone containing binary ions of Pd/vanadate doped hydroxyapatite for biomedical applications. J Drug Deliv Sci Technol 2022. [DOI: 10.1016/j.jddst.2022.103153] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Al-Wafi R. Polycaprolactone-based antibacterial nanofibrous containing vanadium/hydroxyapatite with morphology, mechanical properties, and in vitro studies. NEW J CHEM 2022. [DOI: 10.1039/d1nj02249k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Repairing the damaged wound tissues is a vital demand to keep an adequate clinical care system. In this work, nanofibrous scaffolds of polycaprolactone (PCL) have been encapsulated with hydroxyapatite (HAP)...
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Qian G, Zhang L, Liu X, Wu S, Peng S, Shuai C. Silver-doped bioglass modified scaffolds: A sustained antibacterial efficacy. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 129:112425. [PMID: 34579875 DOI: 10.1016/j.msec.2021.112425] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Revised: 08/24/2021] [Accepted: 09/06/2021] [Indexed: 10/20/2022]
Abstract
Implant-related bacterial infection is a serious complication, which even causes implant failure. Silver (Ag) nanoparticles are broadly used antibacterial agents due to their excellent antibacterial ability and broad-spectrum bactericidal property. However, the significance of burst release cannot be entirely ignored. In this study, Ag doped mesoporous bioactive glasses (Ag-MBG) nanospheres were synthesized using modified Stöber method, then incorporated into poly L-lactic acid (PLLA) matrix to prepare the composite scaffolds via selective laser sintering (SLS) technology. Herein, Mesoporous bioactive glasses (MBG) sol had many negatively-charged silicon hydroxyl groups, which could adsorb positively-charged Ag ions by electrostatic interaction and eventually form Si-O-Ag bonds into MBG. Moreover, MBG promoted osteoblast colonization due to its continuous release of Si ions. The results showed the Ag-MBG/PLLA scaffold could sustainedly release Ag ions for 28 days, and exhibited significantly antibacterial ability against Escherichia coli, its bacterial inhibition rate was over 80%. In addition, the composite scaffold also showed good cytocompatibility. It may be concluded that the prepared Ag-MBG/PLLA scaffold has great potential to repair implant-associated bone infection.
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Affiliation(s)
- Guowen Qian
- Institute of Bioadditive Manufacturing, Jiangxi University of Science and Technology, Nanchang 330013, China
| | - Lemin Zhang
- Institute of Bioadditive Manufacturing, Jiangxi University of Science and Technology, Nanchang 330013, China
| | - Xudan Liu
- Department of Periodontics, Xiangya Stomatological Hospital & Xiangya School of Stomatology Central South University, Changsha, Hunan 410013, China
| | - Shengda Wu
- Shenzhen University General Hospital, Shenzhen 518060, China
| | - Shuping Peng
- NHC Key Laboratory of Carcinogenesis, The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, School of Basic Medical Science, Central South University, Changsha 410078, China; School of Energy and Machinery Engineering, Jiangxi University of Science and Technology, Nanchang 330013, China.
| | - Cijun Shuai
- Institute of Bioadditive Manufacturing, Jiangxi University of Science and Technology, Nanchang 330013, China; State Key Laboratory of High Performance Complex Manufacturing, Central South University, Changsha 410083, China; Shenzhen Institute of Information Technology, Shenzhen 518172, China.
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Donya H, Darwesh R, Ahmed MK. Morphological features and mechanical properties of nanofibers scaffolds of polylactic acid modified with hydroxyapatite/CdSe for wound healing applications. Int J Biol Macromol 2021; 186:897-908. [PMID: 34273344 DOI: 10.1016/j.ijbiomac.2021.07.073] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Revised: 07/07/2021] [Accepted: 07/11/2021] [Indexed: 02/07/2023]
Abstract
Ternary nanocomposites, including graphene oxide (GO), hydroxyapatite (HAP), and cadmium selenite (CdSe) have been encapsulated into nanofibrous scaffolds of polylactic acid. These compositions were indexed as HAP@PLA (C1), CdSe@PLA (C2), HAP/CdSe@PLA (C3), HAP/GO@PLA (C4), and HAP/CdSe/GO@PLA (C5). Structural confirmation is executed by XRD and XPS techniques, while FESEM performs morphological characteristics. CdSe and GO dopants cause a significant increase in nanofiber diameter, HAP/GO@PLA (C4), showing thin surface fibers with fiber diameter up to 3.1 μm, followed by HAP/CdSe/GO@PLA (C4) composite that belongs to filament size up to 2.1 μm. On the other hand, the mechanical properties reveal that the dual dopant composites HAP/CdSe@PLA (C3) and HAP/GO@PLA (C4) hit the maximum tensile fracture values with 1.49 ± 0.3 and 0.99 ± 0.2 MPa. Further, the ternary C5 composite represents the lowest contact angle of 86.1 ± 3.7°. The antibacterial activity increased from 32.4 ± 9.7 and 28.4 ± 6.5% to be 85.3 ± 4.6 and 88.1 ± 5.6% for C1 and C5, respectively, against both E. coli and S. aureus in dark conditions. Moreover, the antibacterial potency enhanced from 75.4 ± 7.6 to be 83.5 ± 6.5 from dark to light conditions against E. coli for the composition of PLA containing the binary composition of HAP/CdSe.
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Affiliation(s)
- Hossam Donya
- Physics Department, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia.
| | - Reem Darwesh
- Physics Department, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia
| | - M K Ahmed
- Faculty of Nanotechnology for Postgraduate Studies, Cairo University, El-Sheikh Zayed 12588, Egypt.
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