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Xie YX, Cheng WC, Xue ZF, Rahman MM, Wang L. Deterioration phenomenon of Pb-contaminated aqueous solution remediation and enhancement mechanism of nano-hydroxyapatite-assisted biomineralization. JOURNAL OF HAZARDOUS MATERIALS 2024; 470:134210. [PMID: 38581876 DOI: 10.1016/j.jhazmat.2024.134210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Revised: 04/01/2024] [Accepted: 04/02/2024] [Indexed: 04/08/2024]
Abstract
Modern metallurgical and smelting activities discharge the lead-containing wastewater, causing serious threats to human health. Bacteria and urease applied to microbial-induced carbonate precipitation (MICP) and enzyme-induced carbonate precipitation (EICP) are denatured under high Pb2+ concentration. The nano-hydroxyapatite (nHAP)-assisted biomineralization technology was applied in this study for Pb immobilization. Results showed that the extracellular polymers and cell membranes failed to secure the urease activity when subjected to 60 mM Pb2+. The immobilization efficiency dropped to below 50% under MICP, whereas it due to a lack of extracellular polymers and cell membranes dropped to below 30% under EICP. nHAP prevented the attachment of Pb2+ either through competing with bacteria and urease or promoting Ca2+/Pb2+ ion exchange. Furthermore, CO32- from ureolysis replaced the hydroxyl (-OH) in hydroxylpyromorphite to encourage the formation of carbonate-bearing hydroxylpyromorphite of higher stability (Pb10(PO4)6CO3). Moreover, nHAP application overcame an inability to provide nucleation sites by urease. As a result, the immobilization efficiency, when subjected to 60 mM Pb2+, elevated to above 80% under MICP-nHAP and to some 70% under EICP-nHAP. The findings highlight the potential of applying the nHAP-assisted biomineralization technology to Pb-containing water bodies remediation.
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Affiliation(s)
- Yi-Xin Xie
- School of Civil Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China; Shaanxi Key Laboratory of Geotechnical and Underground Space Engineering (XAUAT), Xi'an 710055, China
| | - Wen-Chieh Cheng
- School of Civil Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China; Shaanxi Key Laboratory of Geotechnical and Underground Space Engineering (XAUAT), Xi'an 710055, China.
| | - Zhong-Fei Xue
- School of Civil Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China; Shaanxi Key Laboratory of Geotechnical and Underground Space Engineering (XAUAT), Xi'an 710055, China
| | - Md Mizanur Rahman
- Geotechnical Engineering, UniSA STEM, ScaRCE, University of South Australia, SA 5000, Australia
| | - Lin Wang
- School of Civil Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China; Shaanxi Key Laboratory of Geotechnical and Underground Space Engineering (XAUAT), Xi'an 710055, China
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Optimization of ZnO Nanorods Growth on Polyetheresulfone Electrospun Mats to Promote Antibacterial Properties. Molecules 2020; 25:molecules25071696. [PMID: 32272751 PMCID: PMC7180436 DOI: 10.3390/molecules25071696] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2020] [Revised: 04/02/2020] [Accepted: 04/05/2020] [Indexed: 11/23/2022] Open
Abstract
Zinc oxide (ZnO) nanorods grown by chemical bath deposition (CBD) on the surface of polyetheresulfone (PES) electrospun fibers confer antimicrobial properties to the obtained hybrid inorganic–polymeric PES/ZnO mats. In particular, a decrement of bacteria colony forming units (CFU) is observed for both negative (Escherichia coli) and positive (Staphylococcus aureus and Staphylococcus epidermidis) Grams. Since antimicrobial action is strictly related to the quantity of ZnO present on surface, a CBD process optimization is performed to achieve the best results in terms of coverage uniformity and reproducibility. Scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS) provide morphological and compositional analysis of PES/ZnO mats while thermogravimetric analysis (TGA) is useful to assess the best process conditions to guarantee the higher amount of ZnO with respect to PES scaffold. Biocidal action is associated to Zn2+ ion leaching in solution, easily indicated by UV–Vis measurement of metallation of free porphyrin layers deposited on glass.
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Gangemi CMA, Iudici M, Spitaleri L, Randazzo R, Gaeta M, D’Urso A, Gulino A, Purrello R, Fragalà ME. Polyethersulfone Mats Functionalized with Porphyrin for Removal of Para-nitroaniline from Aqueous Solution. Molecules 2019; 24:molecules24183344. [PMID: 31540076 PMCID: PMC6766941 DOI: 10.3390/molecules24183344] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Revised: 09/09/2019] [Accepted: 09/10/2019] [Indexed: 02/07/2023] Open
Abstract
The dispersion of para-nitroaniline (p-NA) in water poses a threat to the environment and human health. Therefore, the development of functional adsorbents to remove this harmful compound is crucial to the implementation of wastewater purification strategies, and electrospun mats represent a versatile and cost-effective class of materials that are useful for this application. In the present study, we tested the ability of some polyethersulfone (PES) nanofibers containing adsorbed porphyrin molecules to remove p-NA from water. The functional mats in this study were obtained by two different approaches based on fiber impregnation or doping. In particular, meso-tetraphenyl porphyrin (H2TPP) or zinc(II) meso-tetraphenyl porphyrin (ZnTPP) were immobilized on the surface of PES fiber mats by dip-coating or added to the PES electrospun solution to obtain porphyrin-doped PES mats. The presence of porphyrins on the fiber surfaces was confirmed by UV–Vis spectroscopy, fluorescence measurements, and XPS analysis. p-NA removal from water solutions was spectrophotometrically detected and evaluated.
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Affiliation(s)
- Chiara Maria Antonietta Gangemi
- Dipartimento di Scienze Chimiche, Università degli Studi di Catania, Viale A. Doria, 6-95100 Catania, Italy; (C.M.A.G.); (M.I.); (L.S.); (R.R.); (M.G.); (A.G.); (R.P.)
| | - Mario Iudici
- Dipartimento di Scienze Chimiche, Università degli Studi di Catania, Viale A. Doria, 6-95100 Catania, Italy; (C.M.A.G.); (M.I.); (L.S.); (R.R.); (M.G.); (A.G.); (R.P.)
| | - Luca Spitaleri
- Dipartimento di Scienze Chimiche, Università degli Studi di Catania, Viale A. Doria, 6-95100 Catania, Italy; (C.M.A.G.); (M.I.); (L.S.); (R.R.); (M.G.); (A.G.); (R.P.)
- INSTM UdR of Catania, Viale A. Doria, 6-95125 Catania, Italy
| | - Rosalba Randazzo
- Dipartimento di Scienze Chimiche, Università degli Studi di Catania, Viale A. Doria, 6-95100 Catania, Italy; (C.M.A.G.); (M.I.); (L.S.); (R.R.); (M.G.); (A.G.); (R.P.)
| | - Massimiliano Gaeta
- Dipartimento di Scienze Chimiche, Università degli Studi di Catania, Viale A. Doria, 6-95100 Catania, Italy; (C.M.A.G.); (M.I.); (L.S.); (R.R.); (M.G.); (A.G.); (R.P.)
| | - Alessandro D’Urso
- Dipartimento di Scienze Chimiche, Università degli Studi di Catania, Viale A. Doria, 6-95100 Catania, Italy; (C.M.A.G.); (M.I.); (L.S.); (R.R.); (M.G.); (A.G.); (R.P.)
| | - Antonino Gulino
- Dipartimento di Scienze Chimiche, Università degli Studi di Catania, Viale A. Doria, 6-95100 Catania, Italy; (C.M.A.G.); (M.I.); (L.S.); (R.R.); (M.G.); (A.G.); (R.P.)
- INSTM UdR of Catania, Viale A. Doria, 6-95125 Catania, Italy
| | - Roberto Purrello
- Dipartimento di Scienze Chimiche, Università degli Studi di Catania, Viale A. Doria, 6-95100 Catania, Italy; (C.M.A.G.); (M.I.); (L.S.); (R.R.); (M.G.); (A.G.); (R.P.)
| | - Maria Elena Fragalà
- Dipartimento di Scienze Chimiche, Università degli Studi di Catania, Viale A. Doria, 6-95100 Catania, Italy; (C.M.A.G.); (M.I.); (L.S.); (R.R.); (M.G.); (A.G.); (R.P.)
- INSTM UdR of Catania, Viale A. Doria, 6-95125 Catania, Italy
- Correspondence: ; Tel.: +390957385149
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