화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Korean Journal of Chemical Engineering, Vol.37, No.1, 80-92, January, 2020
DOI10.1007/s11814-019-0424-6  Export Citation
Magnetic nanocomposite of filamentous algae activated carbon for efficient elimination of cephalexin from aqueous media
Shirin Afshin1, 2, Yousef Rashtbari1, 2, Bahman Ramavandi3, 4, Mehdi Fazlzadeh5, 2, Mehdi Vosoughi5, 2, †, Seyad Ahmad Mokhtari2, Mohammad Shirmardi6, 7, and Rabia Rehman8
  • 1Students Research Committee, School of Public Health, Ardabil University of Medical Sciences, Ardabil, Iran
  • 2Department of Environmental Health Engineering, School of Public Health, Ardabil University of Medical Sciences, Ardabil, Iran
  • 3Systems Environmental Health and Energy Research Center, The Persian Gulf Biomedical Sciences Research Institute, Bushehr University of Medical Sciences, Bushehr, Iran
  • 4Department of Environmental Health Engineering, Faculty of Health and Nutrition, Bushehr University of Medical Sciences, Bushehr, Iran
  • 5Social Determinants of Health Research Center, Ardabil University of Medical Sciences, Ardabil, Iran
  • 6Social Determinants of Health Research Center, Health Research Institute, Babol University of Medical Sciences, Babol, Iran
  • 7Department of Environmental Health Engineering, School of Public Health, Babol University of Medical Sciences, Babol, Iran
  • 8Institute of Chemistry, University of Punjab, New Campus, Lahore-54590, Pakistan
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Discharge of antibiotics into the environment can cause problems like increase of the microorganisms' resistance, disturbing the ecological balance and increasing the allergy in humans. In this research, an activated carbon was produced from filamentous algae and then magnetized with Fe3O4. The adsorbent size was nano-scale and its characteristics were studied using XRD, FT-IR, FE-SEM, BET and VSM techniques. The response surface method (RSM) was employed to optimize the operating parameters and determine the best conditions for cephalexin removal by novel composite of AC-Fe3O4. The various parameters in the process, such as reaction time, initial pH, adsorbent dose, initial concentration of cephalexin and effect of cations and anions that could interfere in the adsorption of cephalexin were evaluated in three levels. The proposed quadratic model was found to be best suggested model for the adsorption process (R2=0.99094 and R2 adj=0.9991). According to results, the parameters such as cephalexin concentration, the adsorbent dose, the reaction time and the pH value were found to be 28.16mg/L, 2 g/L, 30.04 and 3.02, respectively. Experimental results showed that the adsorption of cephalexin followed Langmuir isotherm (R2=0.9803). Also, the results showed cephalexin adsorption on the composite fitted pseudo-second-order kinetics. The study showed that the AC-Fe3O4 adsorbent has high efficacy for eliminating cephalexin from aqueous solution.
Keywords:Adsorption;Magnetic Activated Carbon;Cephalexin;Response Surface Methodology;Filamentous Algae
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