Investigating the efficiency of single-walled and multi-walled carbon nanotubes in removal of penicillin G from aqueous solutions
Journal Title: Environmental Health Engineering and Management Journal - Year 2018, Vol 5, Issue 4
Abstract
Background: Drugs, especially antibiotics, are one of the serious problems of modern life and the main pollution sources of the environment, especially in the last decade, which are harmful to human health and environment. The aim of this study was to investigate the removal of penicillin G from aqueous solutions using single-walled and multi-walled carbon nanotubes. Methods: In this study, the effect of different parameters including pH (3, 5, 7, 9, and 11), initial concentration of pollutant (50, 100, 150, and 200 mg/l), absorbent dose (0.25, 0.5, 0.75, and 1 g/L), mixing speed (0, 100, 200, and 300 rpm), and temperature (10, 15, 25, 35, 45°C) were investigated. The Langmuir, Freundlich, Temkin, BET, Dubinin-Radushkevich isotherms and adsorption kinetics of the first- and second-order equations were determined. Results: The results showed that the efficiency of single-walled and multi-walled carbon nanotubes in the removal of penicillin G was 68.25% and 56.37%, respectively, and adsorption capacity of the nanotubes was 141 mg/g and 119 mg/g at initial concentration of 50 mg/l and pH=5 with adsorption dose of 0.8 g/L for 105 minutes at 300 rpm and temperature of 10°C from aqueous solutions. Also, it was revealed that the adsorption process had the highest correlation with the Langmuir model and secondorder kinetics, and the maximum adsorption capacity based on Langmuir model was 373.80 mg/g. Conclusion: According to the results, it was found that single-walled and multi-walled carbon nanotubes can be used as effective absorbents in the removal of penicillin G from aqueous solutions.
Authors and Affiliations
Soheila Chavoshan1 ID , Maryam Khodadadi2* ID , Negin Nasseh3, Ayat Hossein Panahi4, Aliyeh Hosseinnejad1
Keywords
Related Articles
- EP ID EP45328
- DOI 10.15171/EHEM.2018.26
- Views 437
- Downloads 0
Effects of pre-ozonation and chemical coagulation on the removal of turbidity, color, TOC, and chlorophyll a from drinking water
Background: Ozone can be used as a single technology or in combination with other processes to improve the coagulation- flocculation or biodegradability in order to remove pollutants in natural water treatment. Methods:...
Health and safety hazards identification and risk assessment in the swimming pools using combined HAZID and ALARP
Background: Swimming pools are recreation and sport sites where the lack of safety and health can have severe adverse effect on public health. This study aimed to identify and assess health and safety risks using HAZID...
Evaluation of the presence of coliform in bottled drinking water, released in Sari in 2016
Background: Today, bottled water is used in many countries of the world due to its relatively low cost, better taste, ease of access and low levels of impurities. In unfavorable conditions, the maintenance of microorgani...
Comparison of EPI in the field of climate changes indexes in Iran and other countries in 2020 and the relationship between GDP and EPI
Background: This study aimed to evaluate the Environmental Performance Index (EPI) in the field of climate changes in Iran in 2020, to compare these indexes in the Middle East countries and developed countries, and to...
Screening of camphene as a potential inhibitor targeting SARSCoV- 2 various structural and functional mutants: Through reverse docking approach
Background: SARS-CoV was first identified in 2003 but SARS-CoV-2, which gained its recognition again in 2019 as COVID-19, has been a crucial threat worldwide and has caused more death rates than the SARS-CoV but till n...