In this work, carbon nanotubes (MWCNTs) were utilized as efficient adsorbents for pantoprazole (PP) removal. We used MWCNTs that were synthesized using the chemical vapor deposition process. The physical characteristics of MWCNTs were described by Brunauer-Emmett-Teller (BET) contact area, surface functional group analysis by the point of zero charge (pHPZC), Fourier transform infrared (FTIR) analysis, Scanning electron microscope (SEM), X-ray diffraction (XRD), and Transmission electron microscopy (TEM). The single-point BET surface area of the MWCNTs was found to be 98.7 m 2 g -1 , with the median pores' diameter of 30.9 nm and an average pore(s) volume of 0.764 cm 3 g -1 . Effective parameters on the PP removal including, pH, contact time and initial amount of adsorbents were optimized, revealing maximum PP removal at pH=6.0 after 25.0 min when 0.026 g MWCNTs. The pseudo second-order kinetic model for adsorption of PP on the surface of both adsorbents revealed the high value of correlation coefficient, indicating the high ability of the pseudo second-order model for representation of experimental results. Adsorption equilibrium studies indicated that the Freundlich isotherm efficiently represented MWCNTs adsorption data. The thermodynamic parameters (Gebbs free energy, enthalpy, and entropy) of adsorption process were calculated. Results had shown that adsorption of PP on the MWCNTs is feasible, spontaneous, and exothermic process in the temperature range of 25-76 °C.
We evaluated genetic diversity and population structure of Iranian melons (<i>Cucumis melo</i> L.) using combinations of 35 primer pairs: 15 Simple-Sequence-Repeats (SSR); 10 Inter-Simple-Sequence-Repeats (ISSR); and 10 Sequence-related amplified polymorphism (SRAP) markers in association with resistance to melon Fusarium wilt, caused by <i>Fusarium oxysporum</i> f. sp. <i>melonis</i> (<i>FOM</i>). Genetic similarity was determined by simple matching coefficient (SSM) and dendrogram by clustering-analysis with unweighted pair groups using arithmetic averages (UPGMA). By combining ISSR-SSR-SRAP markers, a high degree of variation among the melons was detected. The mean polymorphism information content (PIC), marker index (MI), effective-number of alleles (I), expected heterozygosity (H), and Nei’s gene diversity parameters were 0.392, 0.979, 1.350, 0.551 and 0.225, respectively. According to MI, PIC, I, H, and Nei indices evaluation, ISSR6, ISSR9, SRAP3, SRAP5, SSR3 and SSR6 had the best performance in genetic diversity of the related melons population. The 35 primers yielded a total of 264 bands, of which 142 showed polymorphism. Clustering of genotypes based on resistance to Fusarium wilt, and comparison with grouping on SSR, SRAP and ISSR marker revealed a significant compliance between disease severity and molecular marker dendrograms. Thus, increasing the number of molecular markers for genetic diversity provides a powerful tool for future agricultural and conservation tasks.
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