Preparation of a novel magnetic powder resin for the rapid removal of tetracycline in the aquatic environment

Zhou, Qing; Zhang, Man Cheng; Shuang, Chen Dong; Li, Zhe Qin; Li, Ai Min

doi:10.1016/j.cclet.2012.01.039

Cited by 44 publications

(10 citation statements)

References 12 publications

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“…The production and consumption of tetracycline-antibiotic rank second in the world, while on top of the ranking in China [4,5]. However, only a small part of tetracycline-antibiotic used is metabolized or absorbed in vivo, most (about 70-90%) is excreted or released in metabolite forms into the environment via urine or feces from humans and animals [6,7]. Tetracycline (TC) is an important tetracycline-antibiotic, which is frequently used in aquaculture and veterinary medicine [8].…”

Section: Introductionmentioning

confidence: 99%

Removal and removing mechanism of tetracycline residue from aqueous solution by using Cu-13X

Xuan

et al. 2015

Chemical Engineering Journal

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Section: Introductionmentioning

confidence: 99%

Removal and removing mechanism of tetracycline residue from aqueous solution by using Cu-13X

Xuan

et al. 2015

Chemical Engineering Journal

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“…They can be prepared from preformed polymers by ME-solvent evaporation method, as explained in Figure 14b or synthesised starting from monomers by the MESP method (Takeda et al, 2009;Zhou et al, 2012;Supsakulchai et al, 2003). Takeda et al (2009) produced acrylate microspheres filled with titanium dioxide (TiO 2 ) using SPG ME and subsequent suspension polymerisation (Table 9D).…”

Section: Nanoparticle-embedded Polymeric Microspheresmentioning

confidence: 99%

“…When TiO 2 was dispersed in the organic phase using ultrasonic cleaner, a severe membrane clogging was observed due to significant agglomeration of TiO 2 in the suspension. Zhou et al (2012) and Zhang et al (2013) (Table 10A). A buffer solution containing EDA monomer was then added to the emulsion and core-shell capsules were formed by interfacial polymerisation (Chu et al, 2002).…”

Section: Nanoparticle-embedded Polymeric Microspheresmentioning

confidence: 99%

Structured microparticles with tailored properties produced by membrane emulsification

Vladisavljević

2015

Advances in Colloid and Interface Science

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This paper provides an overview of membrane emulsification routes for fabrication of structured microparticles with tailored properties for specific applications. Direct (bottom-up) and premix (top-down) membrane emulsification processes are discussed including operational, formulation and membrane factors that control the droplet size and droplet generation regimes. A special emphasis was put on different methods of controlled shear generation on membrane surface, such as cross flow on the membrane surface, swirl flow, forward and backward flow pulsations in the continuous phase and membrane oscillations and rotations. Droplets produced by membrane emulsification can be used for synthesis of particles with versatile morphology (solid and hollow, matrix and core/shell, spherical and non-spherical, porous and coherent, composite and homogeneous), which can be surface functionalised and coated or loaded with macromolecules, nanoparticles, quantum dots, drugs, phase change materials and high molecular weight gases to achieve controlled/targeted drug release and impart special optical, chemical, electrical, acoustic, thermal and magnetic properties. The template emulsions including metal-in-oil, solid-in-oil-in-water, oil-in-oil, multilayer, and Pickering emulsions can be produced with high encapsulation efficiency of encapsulated materials and narrow size distribution and transformed into structured particles using a variety of different processes, such as polymerisation (suspension, mini-emulsion, interfacial and in-situ), ionic gelation, chemical crosslinking, melt solidification, internal phase separation, layer-by-layer electrostatic deposition, particle self-assembly, complex coacervation, spray drying, sol-gel processing, and molecular imprinting. Particles fabricated from droplets produced by membrane emulsification include nanoclusters, colloidosomes, carbon aerogel particles, nanoshells, polymeric (molecularly imprinted, hypercrosslinked, Janus and core/shell) particles, solder metal powders and inorganic particles. Membrane 2 emulsification devices operate under constant temperature due to low shear rates on the membrane surface, which range from (1−10) × 10 3 s −1 in a direct process to (1−10) × 10 4 s −1 in a premix process.Keywords: Membrane Emulsification; Polymeric microsphere; Microgel; Janus Particle; Core/Shell Particle, Colloidosome. Membrane emulsificationMembrane emulsification (ME) involves preparation of emulsions by pressing a pure dispersed phase or pre-emulsified mixture of the dispersed and continuous phase through a microporous membrane under controlled injection rate and shear conditions. In direct membrane emulsification (DME), one liquid (a dispersed phase) is injected through a microporous membrane into another immiscible liquid (the continuous phase) (Nakashima et al., 1991;, which leads to the formation of droplets at the membrane/continuous phase interface ( Figure 1a). In premix membrane emulsification (PME) (Figure 1b), a pre-emulsion is pressed through the membrane (...

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“…Finding cheap adsorbent with satisfactory performance is still a challenge. Thus people have attempted to use carbonaceous materials [ 13 ], sludge [ 14 ], natural minerals [ 15 ], siliceous materials [ 16 , 17 ], and polymer resins [ 18 , 19 , 20 ] to remove antibiotics. Therefore, understanding the adsorption properties of antibiotics is important for engineering approaches to improve their performance.…”

Section: Introductionmentioning

confidence: 99%

“…Polymer resin microspheres, with the merits of low cost, high porosity, large surface area, and adsorption capacity, have potential for commercial application [ 14 , 19 , 20 , 21 , 22 ]. Surface modification is important to acquire designed functions of adsorbents.…”

Section: Introductionmentioning

confidence: 99%

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

Zhou

et al. 2018

IJERPH

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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.

show abstract

Preparation of a novel magnetic powder resin for the rapid removal of tetracycline in the aquatic environment

Cited by 44 publications

References 12 publications

Removal and removing mechanism of tetracycline residue from aqueous solution by using Cu-13X

Removal and removing mechanism of tetracycline residue from aqueous solution by using Cu-13X

Structured microparticles with tailored properties produced by membrane emulsification

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

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