Study on characterization and pervaporation performance of interfacially polymerized polyamide thin-film composite membranes for dehydrating tetrahydrofuran

Huang, Shu-Hsien; Liu, Yuying; Huang, Yun-Hsuan; Liao, Kuo‐Sung; Hu, Chien‐Chieh; Lee, Kueir‐Rarn; Lai, Juin‐Yih

doi:10.1016/j.memsci.2014.07.022

Cited by 37 publications

(16 citation statements)

References 31 publications

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“…Subsequently, the solution was cast on the glass substrate with a casting knife, and the glass substrate was immediately immersed in a water bath. The obtained membrane was left in deionized water overnight to completely remove the residual solvent . Thickness of the PAN‐based membranes was maintained at 0.22 ± 0.02 mm.…”

Section: Methodsmentioning

confidence: 99%

Immobilization of horseradish peroxidase on modified PAN‐based membranes for the removal of phenol from buffer solutions

Wang

Liu

Zheng³

et al. 2016

Can J Chem Eng

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Polyacrylonitrile ultrafiltration membranes have been widely used in many separation processes. In this paper, horseradish peroxidase was immobilized onto polyacrylonitrile ultrafiltration membrane by crosslinking with glutaraldehyde. The immobilized enzyme possessed a protein loading of 0.025 mg/cm2membrane and a specific activity of 105 U/mgprotein (105 μmol/min/mgprotein). The initial modified and immobilized membranes were observed using SEM and FTIR. Potential applications of HRP membranes were investigated in the removal of phenol through oxidation with the addition of hydrogen peroxide. The optimum pH of the immobilized enzyme was determined to be 6.0, and the optimum hydrogen peroxide concentration to be 30 mmol/L. Almost 100 % removal of phenol (1 ∼ 10 mg/L) from water was achieved by HRP membranes. For high concentrated solutions, successive cycles were successfully used to improve the degree of phenol oxidation. Furthermore, the immobilized horseradish peroxidase was operationally stable. These results suggest that the HRP membrane has promising applications for the removal of phenol.

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Section: Methodsmentioning

confidence: 99%

Immobilization of horseradish peroxidase on modified PAN‐based membranes for the removal of phenol from buffer solutions

Wang

Liu

Zheng³

et al. 2016

Can J Chem Eng

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“…For instance, Lai and co-workers [5] used ethylenediamine (EDA), m-phenylenediamine (MPD), piperaine (PIP) and 1,6-hexanediamine (HDA) as reactant amines for interfacial reaction with trimesoyl chloride (TMC) to produce membranes for isopropanol dehydration, and they reported that the EDA/TMC membrane showed the best pervaporation performance among the membranes produced with the various amines [5]. They also prepared polyamide TFC membranes by reacting 1,3-diaminopropane (DAPE), 1,3-cyclohexanediamine (CHDA) and MPD with TMC for use in dehydration of tetrahydrofuran, and the DAPE/TMC membrane was found to exhibit the desirable pervaporation performance [6]. In addition, novel amines (e.g., 2,2′-dimethylbenzidine hydrochloride (m-tolidine-H) [7]) and acyl chlorides (e.g., 5-nitrobenzene-1,3-dioyl dichloride and 5-tert-butylbenzene-1,3-dioyl dichloride [8]) have been synthesized to produce interfacially polymerized membranes for ethanol dehydration.…”

Section: Introductionmentioning

confidence: 99%

Thin film composite membranes comprising of polyamide and polydopamine for dehydration of ethylene glycol by pervaporation

Martin

et al. 2015

Journal of Membrane Science

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“…For the CRF post-treatment at 30 °C, abundant pores in the membrane cross-section contributed to the water molecules quickly moving into the CRF coating and to the easy release of small urea molecules from the pores, which resulted in a high rate of nutrient release. High surface roughness of the membrane also led to low hydrophobicity 30 and increased water contact with the higher surface area of the membrane 31 , which also accelerated nutrient release. Post-treatment duration did not affect the controlled-release behavior, mainly because pore size and membrane cross-section thickness did not change significantly at the relative low temperature; although aziridine ring groups of the cross-linker can react with –COOH in waterborne polyacrylate emulsion at room temperature (e.g., 30 °C).…”

Section: Discussionmentioning

confidence: 99%

Thermal post-treatment alters nutrient release from a controlled-release fertilizer coated with a waterborne polymer

Zhou

et al. 2015

Sci Rep

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Controlled-release fertilizers (CRF) use a controlled-release technology to enhance the nutrient use efficiency of crops. Many factors affect the release of nutrients from the waterborne polymer-coated CRF, but the effects of thermal post-treatments remain unclear. In this study, a waterborne polyacrylate-coated CRF was post-treated at different temperatures (30 °C, 60 °C, and 80 °C) and durations (2, 4, 8, 12, and 24 h) after being developed in the Wurster fluidized bed. To characterize the polyacrylate membrane, and hence to analyze the mechanism of nutrient release, Fourier transform mid-infrared spectroscopy, scanning electron microscopy, and atomic force microscopy were employed. The nutrient-release model of CRF post-treated at 30 °C was the inverse “L” curve, but an increased duration of the post-treatment had no effect. The nutrient-release model was “S” curve and nutrient-release period was enhanced at higher post-treatment temperatures, and increased post-treatment duration lengthened slowed nutrient release due to a more compact membrane and a smoother membrane surface as well as a promoted crosslinking action. CRF equipped with specified nutrient-release behaviors can be achieved by optimizing the thermal post-treatment parameters, which can contribute to the development and application of waterborne polymer-coated CRF and controlled-release technologies.

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Study on characterization and pervaporation performance of interfacially polymerized polyamide thin-film composite membranes for dehydrating tetrahydrofuran

Cited by 37 publications

References 31 publications

Immobilization of horseradish peroxidase on modified PAN‐based membranes for the removal of phenol from buffer solutions

Immobilization of horseradish peroxidase on modified PAN‐based membranes for the removal of phenol from buffer solutions

Thin film composite membranes comprising of polyamide and polydopamine for dehydration of ethylene glycol by pervaporation

Thermal post-treatment alters nutrient release from a controlled-release fertilizer coated with a waterborne polymer

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