Study on Cost-Efficient Carbon Aerogel to Remove Antibiotics from Water Resources

Aylaz, Gülgün
Okan, Meltem
Duman, Memed
Aydin, Halil Murat
Because of pharmaceutical-emerging contaminants in water resources, there has been a significant increase in the antibiotic resistance in bacteria. Therefore, the removal of antibiotics from water resources is essential. Various antibiotics have been greatly studied using many different carbon-based materials including graphene-based hydrogels and aerogels. In this study, carbon aerogels (CAs) were synthesized from waste paper sources and their adsorption behaviors toward three antibiotics (hygromycin B, gentamicin, and vancomycin) were investigated, for which there exist a limited number of reports in the literature. The prepared CAs were characterized with scanning electron microscopy, transmission electron microscopy, X-ray photoelectron spectroscopy, and micro-computerized tomography (mu-CT). According to the mu-CT results, total porosity and open porosity were calculated as 90.80 and 90.76%, respectively. The surface area and surface-to-volume ratio were found as 795.15 mm(2) and 16.79 mm(-1), respectively. The specific surface area of the CAs was found as 104.2 m(2)/g. A detailed adsorption study was carried out based on different pH values, times, and analyte concentrations. The adsorption capacities were found as 104.16, 81.30, and 107.52 mg/g for Hyg B, Gen, and Van, respectively. For all three antibiotics, the adsorption behavior fits the Langmuir model. The kinetic studies showed that the system fits the pseudo-second-order kinetic model. The production of CAs, within the scope of this study, is safe, facile, and cost-efficient, which makes these green adsorbents a good candidate for the removal of antibiotics from water resources. This study represents the first antibiotic adsorption study based on CAs obtained from waste paper.


Determination of colistin resistance in Escherichia coli isolates from foods in Turkey, 2011-2015
Güzel, Mustafa; Avşaroğlu, M Dilek; Soyer, Yeşim (2020-05-01)
Antimicrobial resistance of pathogenic microorganisms is an emerging public health concern. Intensive use of antibiotics in food animals might increase antimicrobial resistance in foodborne pathogens. Colistin is a last resort antibiotic for treatment of multidrug resistant (MDR) Gram negative pathogens. The recent antimicrobial resistance studies revealed a mobile antimicrobial resistance gene (mcr) that provides resistance to colistin. Furthermore, the gene has been found in different genera. Therefore, t...
Investigation of plasmid mediated colistin resistance phenotypically and genotypically in Salmonella and E. coli isolates in Turkey
Tok, Seray; Soyer, Yeşim; Department of Food Engineering (2022-5-31)
Today, colistin is used as the last resort antimicrobial against Gram-negative bacteria. Excessive use of colistin caused resistance among bacteria. Recent studies showed presence of plasmid mediated mcr genes, encoding colistin resistance that can be transferred horizontally between different bacterial species. In this study, it was aimed to investigate colistin resistance and change in colistin resistance rate in E. coli and Salmonella isolates over time from different cities in Turkey. For this aim, we...
Investigation of adsorption of pesticides by organo-zeolite from wastewater
Lüle, Güzide Meltem; Atalay, M Ümit; Özbayoğlu, Gülhan; Department of Mining Engineering (2011)
The aim of this study was to determine the adsorption capacity of activated carbon and organo-zeolites for removal of pesticides in water. In order to prepare organo-zeolite, two kinds of cationic surfactants, namely, hexadecyltrimethyl ammonium bromide (HTAB) and dodecyltrimethyl ammonium bromide (DTAB) were used. Adsorption studies of cationic surfactant on zeolite were investigated in respect to initial concentration of cationic surfactant, time, and temperature. It has been found that the best fitted is...
TUL MUNNA, SADIA; Akdağ, Akın; Çulfaz Emecen, Pınar Zeynep; Department of Polymer Science and Technology (2021-9-10)
The polymeric membranes for antimicrobial applications are in high demand nowadays, since the bacteria had developed the resistance against the antibiotics. The membrane technology could become an efficient tool to cope with the antibiotic resistant bacteria which are becoming an unevitable problem on the health and pocket of a common man. To address this issue, the current research is carried out to synthesize polymer with antibacterial properties. Norbornene and oxonorborne monomers with special modificat...
Discovery of non-carbohydrate inhibitors of aminoglycoside-modifying enzymes
Welch, KT; Virga, KG; Whittemore, NA; Özen, Can; Wright, E; Brown, CL; Lee, RE; Serpersu, EH (2005-11-15)
Chemical modification and inactivation of aminoglycosides by many different enzymes expressed in pathogenic bacteria are the main mechanisms of bacterial resistance to these antibiotics. In this work, we designed inhibitors that contain the 1,3-diamine pharmacophore shared by all aminoglycoside antibiotics that contain the 2-deoxystreptamine ring. A discovery library of molecules was prepared by attaching different side chains to both sides of the 1,3-diamine motif. Several of these diamines showed inhibito...
Citation Formats
G. Aylaz, M. Okan, M. Duman, and H. M. Aydin, “Study on Cost-Efficient Carbon Aerogel to Remove Antibiotics from Water Resources,” ACS Omega, pp. 16635–16644, 2020, Accessed: 00, 2020. [Online]. Available: