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Preparation, Characterization, and Application of Activated Carbon From Low-Cost Material for the Adsorption of Tetracycline Antibiotic From Aqueous Solutions Publisher Pubmed



Takdastan A1, 2 ; Mahvi AH3, 4 ; Lima EC5 ; Shirmardi M2 ; Babaei AA1, 2 ; Goudarzi G1, 2 ; Neisi A1, 2 ; Farsani MH2, 7 ; Vosoughi M2
Authors
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Authors Affiliations
  1. 1. Environmental Technologies Research Center(ETRC), Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
  2. 2. Department of Environmental Health Engineering, School of Public Health, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
  3. 3. Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
  4. 4. Center for Solid Waste Research, Institute for Environmental Research, Tehran University of Medical Sciences, Tehran, Iran
  5. 5. Institute of Chemistry, Federal University of Rio Grande Do sul (UFRGS), Av. Bento Goncalves 9500, Porto Alegre, RS, Brazil
  6. 6. Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
  7. 7. Department of Waste Management, Imam Khomeini Hospital, Abadan, Iran

Source: Water Science and Technology Published:2016


Abstract

In this study, a new zinc chloride (ZnCl2) impregnated activated carbon (Zn-AC) was prepared from oak charcoals as low-cost material and used as adsorbent for tetracycline (TC) adsorption. The Zn-AC was characterized using field emission-scanning electron microscope, powder X-ray diffraction, and CHNS-O analyses. Specific surface area of the adsorbent was also measured using the Brunauer, Emmett and Teller (BET) isotherm model. The TC adsorption onto the Zn-AC was investigated as a function of solution pH, adsorbent dosage, and inorganic cations (Li+, K+, Mg2+, Ca2+, Ni2+, and Fe3+) and anions (HCO3-, NO3- and SO4 2-) that could interfere in the adsorption of TC. The adsorbate solution pH had no considerable effect on TC adsorption. The adsorption of TC onto the adsorbent was relatively fast and reached the equilibrium after about 120 min. The results showed that all studied cations and anions decreased TC adsorption onto the Zn-AC, but this decrease in TC adsorption was strongly significant for Fe3+ and Ni2+ ions. The general order kinetic model and the Redlich-Peterson isotherm model provided the best fit to the experimental data. The maximum amount of TC adsorbed onto the Zn-AC (Qmax) is 282.06 mg g-1, indicating this adsorbent is a good adsorbent for the removal of TC from aqueous solutions. © IWA Publishing 2016.
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