ADSORPTION PERFORMANCE OF TETRACYCLINE ONTO NANO-ALUMINA MODIFIED GEL BEADS

LIAO Quan; LUO Hua-yong; RONG Hong-wei; CHEN Bing-wei; LIANG Ying

doi:10.13205/j.hjgc.202009006

Volume 38 Issue 9

Nov. 2020

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LIAO Quan, LUO Hua-yong, RONG Hong-wei, CHEN Bing-wei, LIANG Ying. ADSORPTION PERFORMANCE OF TETRACYCLINE ONTO NANO-ALUMINA MODIFIED GEL BEADS[J]. ENVIRONMENTAL ENGINEERING , 2020, 38(9): 36-42. doi: 10.13205/j.hjgc.202009006

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LIAO Quan, LUO Hua-yong, RONG Hong-wei, CHEN Bing-wei, LIANG Ying. ADSORPTION PERFORMANCE OF TETRACYCLINE ONTO NANO-ALUMINA MODIFIED GEL BEADS[J]. ENVIRONMENTAL ENGINEERING , 2020, 38(9): 36-42. doi: 10.13205/j.hjgc.202009006

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ADSORPTION PERFORMANCE OF TETRACYCLINE ONTO NANO-ALUMINA MODIFIED GEL BEADS

doi: 10.13205/j.hjgc.202009006

College of Civil Engineering, Guangzhou University, Guangzhou 510006, China

Received Date: 2019-10-16

Abstract

Abstract

Nano-alumina modified polyvinyl alcohol-calcium alginate gel spheres (SA-PVA-AlNPs) were prepared by sol-gel method for adsorption removal of tetracycline in aqueous solution. Effects of nano-alumina dosage, initial solution pH and ionic strength on adsorption properties of gel spheres were investigated. It was beneficial to improve the adsorption properties of gel beads; the optimum pH value of SA-PVA-ALNPs adsorbed tetracycline was 3; increase of NaCl concentration didn't significantly affect the adsorption capacity of tetracycline by gel beads. Pseudo-second order model kinetics could better fit the kinetics of SA-PVA-ALNPs adsorption on tetracycline. Langmuir model could better fit the isothermal adsorption data, and the maximum adsorption capacity was 75.90 mg/g. Adsorption of tetracycline by SA-PVA-ALNPs mainly depended on cation bridging, n-π electron donor-acceptor interaction and hydrogen bonding.
- polyvinyl alcohol,
- sodium alginate,
- nano-alumina,
- adsorption,
- tetracycline

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References(35)

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