Study on the fouling behavior of silica nanocomposite modified polypropylene membrane in purification of collagen protein

Ahsani, Mina; Yegani, Reza

doi:10.1016/j.cherd.2015.06.035

Cited by 55 publications

(19 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Prior to the surface functionalization of SiO 2 , the dry SiO 2 nanoparticles were treated with piranha solution for 4 h at room temperature to activate the OH groups on the nanoparticle surface . After removal from the solution, the powders were rinsed copiously with deionized water, and then dried at 110 °C overnight to remove physical adsorbed water on silica surface.…”

Section: Methodsmentioning

confidence: 99%

Confined crystallization behaviors in polyethylene/silica nanocomposites: Synergetic effects of interfacial interactions and filler network

Zhao

Gao

et al. 2017

J Polym Sci B Polym Phys

View full text Add to dashboard Cite

The confinement effects introduced by nanoparticles have been reported to influence the phase behaviors thus the properties of polymer nanocomposites. In this study, molecular dynamics and crystallization behaviors of polyethylene (PE) composited with three types of silica (SiO 2 ) nanoparticles, namely unmodified SiO 2 , hydrophobically modified SiO 2 , SiO 2 -APTES (3-aminopropyltriethoxysilane) and SiO 2 -PTES (n-propyltriethoxysilane), were systematically investigated via a combination of DSC, XRD and 1 H solid-state NMR measurements. The suppressions in crystallization and chain mobilities of PE rank in the order of unmodified SiO 2 < SiO 2 -APTES < SiO 2 -PTES due to the increasing interfacial interactions between PE and SiO 2 nanoparticles. Additionally, independent of polymer-nanoparticle interactions, a silica network forms for all three kinds of nanocomposites when SiO 2 content reaches 83 wt %. The mobilities of polymer chains are severely restricted by such a percolated network structure, leading to a turning point in the crystallization ability of nanocomposites and a new crystallization peak at 45 8C lower than that of pure PE. The synergetic effects of interfacial interactions and filler network on polymer crystallization have been thoroughly studied in this work, which will provide guidance on modifying and designing nanocomposites with controlled properties. FIGURE 6 Cooling (A) and heating (B) DSC scans from the indicated SN temperature (T s ) for PE/SiO 2 -PTES 5 2/98 nanocomposites. [Color figure can be viewed at wileyonlinelibrary.com]

show abstract

Section: Methodsmentioning

confidence: 99%

Confined crystallization behaviors in polyethylene/silica nanocomposites: Synergetic effects of interfacial interactions and filler network

Zhao

Gao

et al. 2017

J Polym Sci B Polym Phys

View full text Add to dashboard Cite

show abstract

“…In this regard, the role of various nanoparticles (NPs) on the engineering features of polymeric nanocomposite membranes has been extensively examined. In many cases significant improvement in mechanical, thermal and antifouling properties has been explored . However, the uniform dispersion of NPs is still a challenging subject for researchers and is largely influenced by intraparticle interactions …”

Section: Introductionmentioning

confidence: 99%

Performance evaluation and antifouling analyses of cellulose acetate/nanodiamond nanocomposite membranes in water treatment

Etemadi

Yegani

Babaeipour

2017

J of Applied Polymer Sci

Self Cite

View full text Add to dashboard Cite

In this study, nanocomposite membranes based on cellulose acetate (CA) and nanodiamond (ND) were prepared by applying phase inversion methods. In order to achieve efficient dispersion and more hydrophilic NDs, they were functionalized via heat treatment (ND-COOH). The prepared nanocomposite membranes were characterized by Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), transmission electron microscopy (TEM), contact angle, porosity measurement, tensile strength, and abrasion resistance techniques. Furthermore, the governing fouling mechanisms were determined by using classic models as well as combined fouling models. Moreover, the effect of precoagulation with polyaluminum chloride (PAC) on the humic acid (HA) filtration was investigated. The obtained results showed that in the presence of ND-COOH, the abrasion resistance of nanocomposite CA membrane was three times higher than that of pristine CA membrane. Besides, the nanocomposite membranes with 0.5 wt % of raw and functionalized ND exhibited excellent hydrophilicity and PWF. The analysis of fouling mechanism based on Hermia's model revealed that the cake formation is prevailing mechanism for CA and CA/ND (0.5 wt %) membranes while for CA/ND-COOH (0.5 wt %) membrane, experimental results are fitted by combined cake filtration-complete blocking (CFCB) model. It confirms that pretreatment with PAC can significantly mitigate fouling and improve HA removal.

show abstract

“…R r and R ir , described by Eqs. (6) and (7) [43,44] illustrate the reversible and irreversible fouling resistances, respectively:…”

Section: Analysis Of Membrane Foulingmentioning

confidence: 99%

Investigating morphology and performance of cellulose acetate butyrate electrospun nanofiber membranes for tomato industry wastewater treatment

Hosseini¹,

Soltanieh²,

Mousavi³

2017

Desalination and Water Treatment

View full text Add to dashboard Cite

a b s t r ac tIn this research, cellulose acetate butyrate (CAB) electrospun nanofiber membrane (ENM) was prepared by electrospinning method in order to separate the contaminants of an industrial wastewater. The influence of various electrospinning parameters on morphology and average fiber diameter of the membranes were investigated by scanning electron microscopy and image analysis. The permeability of the membranes was evaluated by measuring pure water flux. In order to investigate the performance of the prepared membranes for tomato wastewater treatment, the rejection of the pollution indices and flux were determined. The results demonstrated the potential of using CAB nanofiber membrane for wastewater treatment. The appropriate electrospinning conditions led to preparation of the membranes with high water permeability in the range of microfiltration, proper retention efficiency in the range of ultrafiltration and noticeable antifouling property.

show abstract

Study on the fouling behavior of silica nanocomposite modified polypropylene membrane in purification of collagen protein

Cited by 55 publications

References 43 publications

Confined crystallization behaviors in polyethylene/silica nanocomposites: Synergetic effects of interfacial interactions and filler network

Confined crystallization behaviors in polyethylene/silica nanocomposites: Synergetic effects of interfacial interactions and filler network

Performance evaluation and antifouling analyses of cellulose acetate/nanodiamond nanocomposite membranes in water treatment

Investigating morphology and performance of cellulose acetate butyrate electrospun nanofiber membranes for tomato industry wastewater treatment

Contact Info

Product

Resources

About