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- 저자 : Zelal Isik (검색결과 1 건)
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Mohammed Saleh,Zelal Isik,Pinar Belibagli,Hudaverdi Arslan,Serpil Gonca,Sadin Özdemir,Nurbolat Kudaibergenov,Alireza Khataee,Nadir Dizge 한국공업화학회 2023 Journal of Industrial and Engineering Chemistry Vol.128 No.-
This study aimed to fabricate a novel, low-cost, and environmental-friendly ceramic membrane based onbasalt and leonardite powders via press and sintering methods. The fabricated leonardite basalt ceramicmembrane (LBCM) was coated with silver nanoparticles (AgNPs); to create an antibacterial surface. Thecapabilities of the bare and coated membranes were examined. In this context, water permeabilityreached 554 ± 2.61 and 447 ± 1.21 L/m2hbar for bare LBCM and AgNPs-coated LBCM, respectively. Thefabricated membranes indicated 100% Escherichia coli (E. coli) removal efficiency at a transmembranepressure of 0.5 bar. The solid surface antimicrobial activity of the LBCM and AgNPs-coated LBCM reached26.38% and 100%, respectively. The LBCM and AgNPs-coated LBCM were analyzed for the in-vitro 2,2-diphenyl-1-picrylhydrazyl (DPPH) antioxidant. Accordingly, AgNPs-coated LBCM exhibited higherantioxidant activities than raw LBCM. The scavenging capacity reached 83.91% with AgNPs-coatedLBCM, while only 58.95% was achieved with raw LBCM, indicating that AgNPs-coated LBCM was betterthan bare LBCM from an antioxidant activities perspective. AgNPs-coated LBCM had a deoxyribonucleicacid (DNA) cleavage activity (single-strand DNA cleavage activity at 50 mg/L and double-strand DNAcleavage activity at 100 and 200 mg/L). In contrast, the raw LBCM did not exhibit DNA cleavage activityat any concentration. AgNPs-coated LBCM showed higher antimicrobial activities (minimum inhibitionconcentrations (MICs) were 32 mg/L against Enterococcus faecalis (E. faecalis) and 64 mg/L againstStaphylococcus aureus (S. aureus), Candida tropicalis (C. tropicalis), and Enterococcus hirae (E. hirae)). Thebiofilm inhibition of LBCM and AgNPs-coated LBCM powders was tested against S. aureus andPseudomonas aeruginosa (P. aeruginosa). The maximum S. aureus inhabitations by LBCM and AgNPcoatedLBCM were 60.34% and 99.12%, respectively. The inhabitation of P. aeruginosa increased from52.38% before coating to 96.37% at the end of the coating process. Regarding E.coli microbial cell viabilityinhibition, LBCM powders and AgNPs-coated LBCM powders were found to inhibit E. coli growth by68.35% and 100%, respectively.
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