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Simple Urea Immersion Enhanced Removal of Tetracycline from Water by Polystyrene Microspheres

Author

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  • Junjun Ma

    (State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
    These authors contributed equally to this work.)

  • Bing Li

    (School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China
    These authors contributed equally to this work.)

  • Lincheng Zhou

    (State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Institute of Biochemical Engineering and Environmental Technology, Lanzhou University, Lanzhou 730000, China)

  • Yin Zhu

    (School of Environmental and Civil Engineering, Jiangnan University, Wuxi 214122, China)

  • Ji Li

    (School of Environmental and Civil Engineering, Jiangnan University, Wuxi 214122, China)

  • Yong Qiu

    (State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China)

Abstract

Antibiotics pose potential ecological risks in the water environment, necessitating their effective removal by reliable technologies. Adsorption is a conventional process to remove such chemicals from water without byproducts. However, finding cheap adsorbents with satisfactory performance is still a challenge. In this study, polystyrene microspheres (PSM) were enhanced to adsorb tetracycline by surface modification. Simple urea immersion was used to prepare urea-immersed PSM (UPSM), of which surface groups were characterized by instruments to confirm the effect of immersion. Tetracycline hydrochloride (TC) and doxycycline (DC) were used as typical adsorbates. The adsorptive isotherms were interpreted by Langmuir, Freundlich, and Tempkin models. After urea immersion, the maximum adsorption capacity of UPSM at 293 K and pH 6.8 increased about 30% and 60%, achieving 460 mg/g for TC and 430 mg/g for DC. The kinetic data were fitted by first-order and second-order kinetics and Weber–Morris models. The first-order rate constant for TC adsorption on UPSM was 0.41 /h, and for DC was 0.33 /h. The cyclic urea immersion enabled multilayer adsorption, which increased the adsorption capacities of TC on UPSM by two to three times. The adsorption mechanism was possibly determined by the molecular interaction including π–π forces, cation-π bonding, and hydrogen bonding. The simple surface modification was helpful in enhancing the removal of antibiotics from wastewater with similar structures.

Suggested Citation

  • Junjun Ma & Bing Li & Lincheng Zhou & Yin Zhu & Ji Li & Yong Qiu, 2018. "Simple Urea Immersion Enhanced Removal of Tetracycline from Water by Polystyrene Microspheres," IJERPH, MDPI, vol. 15(7), pages 1-15, July.
    • Handle: RePEc:gam:jijerp:v:15:y:2018:i:7:p:1524-:d:158714
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    References listed on IDEAS

    as
    1. Rushan Chai & Lidong Huang & Lingling Li & Gerty Gielen & Hailong Wang & Yongsong Zhang, 2016. "Degradation of Tetracyclines in Pig Manure by Composting with Rice Straw," IJERPH, MDPI, vol. 13(3), pages 1-9, February.
    2. Prachi Kulkarni & Nathan D. Olson & Greg A. Raspanti & Rachel E. Rosenberg Goldstein & Shawn G. Gibbs & Amir Sapkota & Amy R. Sapkota, 2017. "Antibiotic Concentrations Decrease during Wastewater Treatment but Persist at Low Levels in Reclaimed Water," IJERPH, MDPI, vol. 14(6), pages 1-13, June.
    3. Alexander Hladicz & Clemens Kittinger & Gernot Zarfel, 2017. "Tigecycline Resistant Klebsiella pneumoniae Isolated from Austrian River Water," IJERPH, MDPI, vol. 14(10), pages 1-8, October.
    4. Xinjiang Hu & Yunlin Zhao & Hui Wang & Xiaofei Tan & Yuanxiu Yang & Yunguo Liu, 2017. "Efficient Removal of Tetracycline from Aqueous Media with a Fe 3 O 4 Nanoparticles@graphene Oxide Nanosheets Assembly," IJERPH, MDPI, vol. 14(12), pages 1-15, December.
    5. Hao Zhang & Xunan Li & Qingxiang Yang & Linlin Sun & Xinxin Yang & Mingming Zhou & Rongzhen Deng & Linqian Bi, 2017. "Plant Growth, Antibiotic Uptake, and Prevalence of Antibiotic Resistance in an Endophytic System of Pakchoi under Antibiotic Exposure," IJERPH, MDPI, vol. 14(11), pages 1-12, November.
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