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Aburabie J, Nassrullah H, Hashaikeh R. Fine-tuning of carbon nanostructures/alginate nanofiltration performance: Towards electrically-conductive and self-cleaning properties. CHEMOSPHERE 2023; 310:136907. [PMID: 36265705 DOI: 10.1016/j.chemosphere.2022.136907] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Revised: 09/30/2022] [Accepted: 10/13/2022] [Indexed: 06/16/2023]
Abstract
Electrically-conductive membranes became the center of attention owing to their enhanced ion selectivity and self-cleaning properties. Carbon nanostructures (CNS) attain high electrical conductivity, and fast water transport. Herein, we adopt a water-based, simple method to entrap CNS within Alginate network to fabricate self-cleaning nanofiltration membranes. CNS are embedded into membranes to improve the swelling/shrinkage resistivity, and to achieve electrical-conductivity. The CaAlg PEG-formed pores are tuned by organic-inorganic network via silane crosslinking. Flux/rejection profiles of Na2SO4 are studied/optimized in reference to fabrication parameters. 90% Na2SO4 rejection (7 LMH) is achieved for silane-CaAlg200-10% CNS membranes. Membranes exhibit outstanding electrical conductivity (∼2858 S m-1), which is attractive for fouling control. CaAlg/CNS membranes are tested to treat dye/saline water via two-stage filtration, namely, dye/salt separation and desalination. A successful dye/salt separation is achieved at the first stage with a rejection of 100%-RB and only 3.1% Na2SO4, and 54% Na2SO4 rejection in the second stage.
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Affiliation(s)
- Jamaliah Aburabie
- NYUAD Water Research Center, Engineering Division, New York University Abu Dhabi, Abu Dhabi, P.O. Box 129188, United Arab Emirates
| | - Haya Nassrullah
- NYUAD Water Research Center, Engineering Division, New York University Abu Dhabi, Abu Dhabi, P.O. Box 129188, United Arab Emirates; Chemical and Biomolecular Engineering Division, New York University, Tandon School of Engineering, NY, 11201, USA
| | - Raed Hashaikeh
- NYUAD Water Research Center, Engineering Division, New York University Abu Dhabi, Abu Dhabi, P.O. Box 129188, United Arab Emirates.
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Aslani Z, Nazemi N, Rajabi N, Kharaziha M, Bakhsheshi-Rad HR, Kasiri-Asgarani M, Najafinezhad A, Ismail AF, Sharif S, Berto F. Antibacterial Activity and Cell Responses of Vancomycin-Loaded Alginate Coating on ZSM-5 Scaffold for Bone Tissue Engineering Applications. MATERIALS 2022; 15:ma15144786. [PMID: 35888255 PMCID: PMC9318858 DOI: 10.3390/ma15144786] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/05/2022] [Revised: 06/29/2022] [Accepted: 07/01/2022] [Indexed: 02/04/2023]
Abstract
Despite the significant advancement in bone tissue engineering, it is still challenging to find a desired scaffold with suitable mechanical and biological properties, efficient bone formation in the defect area, and antibacterial resistivity. In this study, the zeolite (ZSM-5) scaffold was developed using the space holder method, and a novel vancomycin-loaded alginate coating was developed on it to promote their characteristics. Our results demonstrated the importance of alginate coating on the microstructure, mechanical, and cellular properties of the ZSM-5 scaffold. For instance, a three-fold increase in the compressive strength of coated scaffolds was observed compared to the uncoated ZSM-5. After the incorporation of vancomycin into the alginate coating, the scaffold revealed significant antibacterial activity against Staphylococcus aureus (S. aureus). The inhibition zone increased to 35 mm. Resets also demonstrated 74 ± 2.5% porosity, 4.3 ± 0.07 MPa strength in compressive conditions, acceptable cellular properties (72.3 ± 0.2 (%control) cell viability) after 7 days, good cell attachment, and calcium deposition. Overall, the results revealed that this scaffold could be a great candidate for bone tissue engineering.
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Affiliation(s)
- Z. Aslani
- Advanced Materials Research Center, Department of Materials Engineering, Najafabad Branch, Islamic Azad University, Najafabad, Iran; (Z.A.); (N.N.); (M.K.-A.); (A.N.)
| | - N. Nazemi
- Advanced Materials Research Center, Department of Materials Engineering, Najafabad Branch, Islamic Azad University, Najafabad, Iran; (Z.A.); (N.N.); (M.K.-A.); (A.N.)
| | - N. Rajabi
- Department of Materials Engineering, Isfahan University of Technology, Isfahan 84156-83111, Iran;
| | - M. Kharaziha
- Department of Materials Engineering, Isfahan University of Technology, Isfahan 84156-83111, Iran;
- Correspondence: (M.K.); (H.R.B.-R.); (F.B.)
| | - H. R. Bakhsheshi-Rad
- Advanced Materials Research Center, Department of Materials Engineering, Najafabad Branch, Islamic Azad University, Najafabad, Iran; (Z.A.); (N.N.); (M.K.-A.); (A.N.)
- Correspondence: (M.K.); (H.R.B.-R.); (F.B.)
| | - M. Kasiri-Asgarani
- Advanced Materials Research Center, Department of Materials Engineering, Najafabad Branch, Islamic Azad University, Najafabad, Iran; (Z.A.); (N.N.); (M.K.-A.); (A.N.)
| | - A. Najafinezhad
- Advanced Materials Research Center, Department of Materials Engineering, Najafabad Branch, Islamic Azad University, Najafabad, Iran; (Z.A.); (N.N.); (M.K.-A.); (A.N.)
| | - A. F. Ismail
- Advanced Membrane Technology Research Center (AMTEC), Universiti Teknologi Malaysia, Johor Bahru 81310, Johor, Malaysia;
| | - S. Sharif
- Faculty of Engineering, Universiti Teknologi Malaysia, Johor Bahru 81310, Johor, Malaysia;
| | - F. Berto
- Department of Mechanical and Industrial Engineering, Norwegian University of Science and Technology, 7491 Trondheim, Norway
- Correspondence: (M.K.); (H.R.B.-R.); (F.B.)
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