RESUMEN
Background: Phenol is a prevalent pollutant found in many industrial wastewaters, and it is paid singular attention because of its special features like high toxicity, carcinogenic properties, and vital gathering ability that affects the health of humans and the environment. One of the most important technologies for the removal of phenol is the use of adsorbents. The current study investigated the removal of phenol from synthetic aqueous solutions using Citrullus colocynthis seed ash
Methods: This study is experimental and was conducted on a pilot scale. The efficiency of phenol removal by C. colocynthis seed ash was evaluated in a batch system, and different parameters such as initial concentration of phenol [10, 20, 50, and 80 mg/L], contact time [2, 5, 10, and 30 minutes], pH [2-12], adsorbent dose [0.5, 1, 3, 5, and 10 g/L], and temperature were studied. Excel software was used for data analysis. The adsorption process was modeled with Freundlich and Langmuir isotherms at controlled temperatures
Results: The results showed that the highest removal rate of phenol was obtained at a pH of 2 [83.4%], initial phenol concentration of 20 ppm [66.4%], adsorbent dose of 5 g/L [86.8%], and contact time of 10 minutes. The evaluation of correlation coefficients showed that the phenol adsorbed by C. colocynthis seed ash was in greater accordance with the Freundlich model than the Langmuir model
Conclusion: In general, the results of this study revealed that C. colocynthis seed ash has suitable potential for use in removing phenol from aqueous solutions on operation and practical scales due to its low cost and easy access
RESUMEN
Background: Dermatophytosis is the common cutaneous infections in humans and animals, which is caused by the keratinophylic fungus called dermatophytes. In recent years, drugs resistance in pathogenic fungi, including dermatophyte strains to the current antifungals have been increased
Objectives: The aim of this study was to evaluate the antifungal efficacy of AgNPs against Microsporum canis, Trichophyton mentagrophytes, and Microsporum gypseum
Materials and Methods: The antifungal susceptibility of nanosilver particles compared with griseofulvin [GR]. Its efficacy was investigated against three strains of dermatophytes by both agar dilution and broth microdilution test [BMD]
Results: The average minimum inhibitory concentration [MIC] AgNPs on M. canis, T. mentagrophytes and M. gypseum were 200, 180 and 170 micro g.mL[-1], respectively. Whereas these strains showed MIC of 25, 100 and 50 micro g.mL[-1] for GR
Conclusions: Our finding indicated that the AgNPs was less active than GR but it had anti-dermatophytic effect
RESUMEN
There has been a growing interest in finding plants with biological active ingredients for medicinal application. Three colors of petals of Althaea officinalis [A. officinalis] flowers, i.e., pink, reddish pink, and white were examined for total antioxidant activity and flavonoids content. The reddish pink flowers of A. officinalis have more antioxidant activity and the power of antioxidant activity was reddish pink > pink > white. Findings suggest that the dark color can serve as an indicator of antioxidant content of the plant. Flavonoid content was highest in white flower thus this result indicated that flowers with light color can be considered for medicinal uses