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

Junjun Ma, Bing Li, Lincheng Zhou, Yin Zhu, Ji Li, Yong Qiu

Abstract read

In one paragraph

Article in International journal of environmental research and public health, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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5 · Who and what money

Authors and funding

6 authors.

Junjun MaState Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China. mjj16@mails.tsinghua.edu.cn.

Bing LiSchool of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China. libing@ustb.edu.cn.

Lincheng ZhouState Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Institute of Biochemical Engineering and Environmental Technology, Lanzhou University, Lanzhou 730000, China. zhoulc@lzu.edu.cn.

Yin ZhuSchool of Environmental and Civil Engineering, Jiangnan University, Wuxi 214122, China. zyfreely@vip.jiangnan.edu.cn.

Ji LiSchool of Environmental and Civil Engineering, Jiangnan University, Wuxi 214122, China. liji@jiangnan.edu.cn.

Yong QiuState Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China. qiuyong@tsinghua.edu.cn.ORCID 0000-0001-5423-6869

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

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.

Indexed as

Anti-Bacterial AgentsEnvironmental Restoration and RemediationKineticsMicrospheresPolystyrenesTetracyclineUreaWastewaterWater Pollutants, ChemicalWater PurificationAnti-Bacterial AgentsPolystyrenesTetracyclineUreaWastewaterWater Pollutants, Chemicaladsorption isothermskinetics analysismicrosphere resinmultilayer adsorptionsurface characterizationurea immersion

Identifiers

PMID30029466

DOI10.3390/ijerph15071524

PMCPMC6068535

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LicenceCC BY

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.