Effects of multi-walled carbon nanotubes (MWCNTs) and integrated MWCNTs/SiO2 nano-additives on PVDF polymeric membranes for vacuum membrane distillation

Zhou, Rufan; Rana, Dipak; Matsuura, Takeshi; Lan, Christopher Q.

doi:10.1016/j.seppur.2019.02.013

Cited by 74 publications

(11 citation statements)

References 48 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…High loading of NPs leads to delay in the demixing process, where it allows the separation of polymer‐rich and polymer‐poor phases and resulted in more pores formed 8 . However, Zhou et al in their study found that the presence of NPs reduced the membrane porosity, where it improves the thickness of the membrane 9 . Moreover, Li et al and Murugesan et al also reported that the incorporation of high concentration copolymer blended polymeric membrane caused an effect on the porosity of the membrane due to the increase of polymer content in the casting solution 10,11 .…”

Section: Introductionmentioning

confidence: 96%

Effect of ZnO nanoparticles loading in double‐layer polyvinylidene fluoride membrane for desalination via direct contact membrane distillation

Radzi

Ahmad

2020

Asia-Pacific J Chem Eng

View full text Add to dashboard Cite

In this study, double‐layer flat sheet membranes consist of nanocomposite polyvinylidene fluoride (PVDF)–ZnO layer on the top, whereas pristine polymeric PVDF on the bottom was fabricated via the double‐casting phase inversion (DCPI) method. The nanocomposite layer was prepared by loading 0.5%, 1.0%, 1.5% and 2.0% of ZnO nanoparticles. The morphology of the membranes changed as ZnO nanoparticles were introduced in the top layer, where the structure is more rigid and porous than the bottom layer. The increment concentration of nanoparticles in the top layer of the double‐layer membrane gives an effect in increasing of water contact angle slightly, which is from 136° to 140°. Furthermore, the liquid entry pressure of water (LEPw) decreases gradually from 0.69 to 0.4 bar with a high concentration of ZnO due to the presence of large pores. The increment concentration of ZnO nanoparticles also resulted in high porosity and reduced pore size, which reduce the resistance of water vapour to pass through the pores as well as enhancing the performance of membrane distillation (MD). Direct contact membrane distillation (DCMD) experiments were carried out to evaluate the efficiency of the fabricated double‐layer membrane in the desalination of seawater from fish farm water for 6‐h operation. The optimal double‐layer membrane with 0.5% ZnO nanoparticles loading maintained a stable flux of 9.42 L/m2h with 99.9% salt rejection and has antifouling properties. The results indicated that the fabricated double‐layer membrane via the DCPI method fulfils the required properties for MD application with excellent salt rejection.

show abstract

Section: Introductionmentioning

confidence: 96%

Effect of ZnO nanoparticles loading in double‐layer polyvinylidene fluoride membrane for desalination via direct contact membrane distillation

Radzi

Ahmad

2020

Asia-Pacific J Chem Eng

View full text Add to dashboard Cite

show abstract

“…); (2) metal-oxide NPs (Al 2 O 3 , − CeO 2 , , Fe 3 O 4 , , TiO 2 , ZnO, CuO, NiO, etc carbon nanotube, graphene, − and graphene oxide). The literature has revealed that the suspended NPs make significant promotion to the evaporation and combustion characteristics of the base fuels.…”

Section: Introductionmentioning

confidence: 99%

“…Among three types of NPs, metallic and metal-oxide NPs may cause the blockage of combustion systems and also may have toxic effects on living organisms, although they have high energy value. While carbon-based NPs are eco-friendly because only carbon dioxide and water would be formed after combustion. − This motivates us to carry out the study on the n -decane-based nanofluid fuel with adding graphite nanoplatelets (GNPs). The quantities of added GNPs are critical to influence the physical and heat-transfer properties, the rise rate of temperature, and the vaporization rate.…”

Section: Introductionmentioning

confidence: 99%

Effect of Nanoparticle Concentration on Physical and Heat-Transfer Properties and Evaporation Characteristics of Graphite/n-Decane Nanofluid Fuels

Yang

et al. 2022

ACS Omega

View full text Add to dashboard Cite

n-Decane-based nanofluid fuels could be one of the most promising alternative fuels as aviation kerosene for aerospace application. However, the physical and heat-transfer properties of n-decane-based nanofuels have been rarely studied, and the influence of the concentration of nanoparticles on the evaporation characteristics of n-decane-based fuels has been sparsely investigated. This paper investigated physical and heat-transfer properties and evaporation characteristics of graphite/n-decane nanofluid fuels and emphasized the concentration effect of adding graphite nanoplatelets (GNPs) on these characteristics. It was found that there are a linear increase of density and thermal conductivity, a binomial increase of viscosity, and a binomial influence on surface tension as GNP concentration increases, while the boiling point almost remains constant, and the latent heat of vaporization largely decays. There exists a critical GNP concentration of 1.75 wt % for the evaporation performance. At 0∼1.75 wt %, the increase of GNP concentration benefits the evaporation. At 1.75∼4.0 wt %, the enhancement of GNP concentration deteriorates the evaporation performance. A detailed discussion of this evaporation behavior was made, which could be attributed to multiple factors, for example, the aggregation of nanoplatelets, the changes of physical and heat-transfer properties owing to the nanoparticle concentration effect, the surfactant concentration, and the ambient temperature. The concentration of surfactants has a binomial effect, and the ambient temperature has a linear effect on the evaporation rate. This study would promote in depth understanding of physical and heat-transfer properties and evaporation characteristics of nanofluid fuels and develop the application in turbine engines and ramjet engines.

show abstract

“…Therefore, one effective way to alleviate fouling is to introduce antifouling properties to membranes, which can be realized by altering surface hydrophilicity, reducing surface roughness, grafting or coating novel structured polymer and introducing new surface functionalities [31]. Scientists have extensively explored substances that can be packed within the membranes, such as mesoporous silica [32], zeolite [33], and multi-wall carbon nanotubes [34] and mental organic frameworks (MOFs) [35]. Among those materials, the MOFs have attracted extensive attention and been widely researched as a kind of filling material.…”

Section: Membrane Foulingmentioning

confidence: 99%

A review on metal organic frameworks (MOFs) modified membrane for remediation of water pollution

Qian

Zhu

2020

Environmental Engineering Research

View full text Add to dashboard Cite

Porous metal-organic frameworks (MOFs) have received wide attention on the potential application to separation of pollutants from contaminated water to produce clear water. Recently, the report on MOFs modified membrane in pollution separation is very interesting. The main focus is that adding MOFs onto the surface of the membrane can significantly improve its separation performance and anti-fouling ability. This review took the opportunity to give readers a preliminary and detailing understanding of the basic knowledge of the MOFs modified membrane used in remediation of water pollution.

show abstract

Effects of multi-walled carbon nanotubes (MWCNTs) and integrated MWCNTs/SiO2 nano-additives on PVDF polymeric membranes for vacuum membrane distillation

Cited by 74 publications

References 48 publications

Effect of ZnO nanoparticles loading in double‐layer polyvinylidene fluoride membrane for desalination via direct contact membrane distillation

Effect of ZnO nanoparticles loading in double‐layer polyvinylidene fluoride membrane for desalination via direct contact membrane distillation

Effect of Nanoparticle Concentration on Physical and Heat-Transfer Properties and Evaporation Characteristics of Graphite/n-Decane Nanofluid Fuels

A review on metal organic frameworks (MOFs) modified membrane for remediation of water pollution

Contact Info

Product

Resources

About