Molecular simulation of geometrically optimized polyoxymethylene/poly (vinylalcohol) gel membrane for electroless scrubbing Ni(II) ions

Khanale, Mrunalini; Balasubramanian, K.

doi:10.1016/j.jece.2015.11.044

Cited by 14 publications

(4 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Figure 1 shows two such plots taken from the environmental adsorption literature. [28,29] However, the method used to estimate KS was not described in the two reports. [28,29] As noted above, Eq.…”

Section: Linearized Sips Equationsmentioning

confidence: 99%

See 1 more Smart Citation

The Sips isotherm equation: Often used and sometimes misused

Brião

Hashim

Chu

2023

Separation Science and Technology

View full text Add to dashboard Cite

The Sips isotherm equation, proposed in 1948, is popularly used to describe the adsorption of a diverse array of water contaminants by engineered and natural adsorbents. However, that apparent popularity conceals problematic application issues. Our critique of its use in water contaminant adsorption research is threefold. First, we show that a linear version of the Sips equation promoted by several reviews is bogus. We also highlight application problems associated with two other linear versions. Second, we show that it is inappropriate to compare the Sips and Langmuir-Freundlich equations in data correlation. Because the two equations are mathematically equivalent, they must provide exactly the same fit to a given set of isotherm data. Third, we argue that there is little to be gained by applying the Sips equation to type I isotherms, which are hyperbolic curves. Such isotherm shapes can be adequately interpreted by simple two-parameter isotherm models such as the Langmuir and Freundlich equations. The modeling power of the Sips equation can be more profitably exploited by applying it to type V isotherms, which are sigmoid curves.

show abstract

Section: Linearized Sips Equationsmentioning

confidence: 99%

“…[28,29] However, the method used to estimate KS was not described in the two reports. [28,29] As noted above, Eq. 9, on which the plots depicted in Fig.…”

Section: Linearized Sips Equationsmentioning

confidence: 99%

The Sips isotherm equation: Often used and sometimes misused

Brião

Hashim

Chu

2023

Separation Science and Technology

View full text Add to dashboard Cite

show abstract

“…Toxic metal ions can be eliminated from wastewater [174][175][176][177][178][179][180][181][182][183][184][185] through an extensive array of techniques like solvent extraction, ion exchange, membrane filtration, 186 chemical precipitation, coagulation, flocculation, electrochemical removal, etc. Nevertheless, these methodologies pose some drawbacks associated with greater energy consumption, lower efficacy, incomplete removal, expensive disposition, and susceptible operational parameters.…”

Section: Toxic Metal Ionsmentioning

confidence: 99%

Sludge-derived biochar: Physicochemical characteristics for environmental remediation

Mayilswamy

Nighojkar

Edirisinghe

et al. 2023

Applied Physics Reviews

View full text Add to dashboard Cite

The global production of fecal wastes is envisioned to reach a very high tonnage by 2030. Perilous handling and consequential exposition of human and animal fecal matter are inextricably linked with stunted growth, enteric diseases, inadequate cognitive skills, and zoonoses. Sludge treatment from sewage and water treatment processes accounts for a very high proportion of overall operational expenditure. Straightforward carbonization of sludges to generate biochar adsorbents or catalysts fosters a circular economy, curtailing sludge processing outlay. Biochars, carbonaceous substances synthesized via the thermochemical transformation of biomass, possess very high porosity, cation exchange capacity, specific surface area, and active functional sorption sites making them very effective as multifaceted adsorbents, promoting a negative carbon emission technology. By customizing the processing parameters and biomass feedstock, engineered biochars possess discrete physicochemical characteristics that engender greater efficaciousness for adsorbing various contaminants. This review provides explicit insight into the characteristics, environmental impact considerations, and SWOT analysis of different sludges (drinking water, fecal, and raw sewage sludge) and the contemporary biochar production, modification, characterization techniques, and physicochemical characteristics, factors influencing the properties of biochars derived from the aforestated sludges, along with the designing of chemical reactors involved in biochar production. This paper also manifests a state-of-the-art discussion of the utilization of sludge-derived biochars for the eviction of toxic metal ions, organic compounds, microplastics, toxic gases, vermicomposting approaches, and soil amelioration with an emphasis on biochar recyclability, reutilization, and toxicity. The practicability of scaling up biochar generation with multifaceted, application-accustomed functionalities should be explored to aggrandize socio-economic merits.

show abstract

“…Srinivasan et al [100] reported that the application of electroless composite coating of the nickel-phosphorous and PTFE (Ni/P-PTFE) on the sliding surfaces had augmented the anti-galling characteristics of the surface. Electroless method is most widely used for applying these synergistic coatings on substrate owing to its high durability, cost effective and excellent anti-galling characteristics [42,[101][102][103][104]. This research encouraged researchers to have synergistic coatings incorporating PTFE particles of size 0.3 µm along with other elements, that resulted in the reduction of magnitude of the frictional coefficient from 0.07 to 0.035.…”

Section: Polytetrafluoroethylene (Ptfe)mentioning

confidence: 99%

A review: advancements in fluoro-based polymers for aggrandizing anti-galling and wear resistant characteristics

2019

View full text Add to dashboard Cite

Galling is the surface phenomenon which involves adhesion of local contact points and creation of protrusions on the juxtaposition of surfaces owing to high friction, inappropriate tribological loading, starved lubrication and high contact pressure (~ 1000 kPa). All these factors result in severe plastic deformation varying from 8000 to 10,000 µε (ε-strain) and diffusion of materials into one another, which consequently results in fatigue wear, surface roughness, tribocorrosion and seizing up of critical parts. The aim of the review is to analyze and summarizes the issue of galling, concurrently it also deals with the novel and economical mitigation method i.e. use of fluorine based coatings e.g. PTFE, owing to their lowest friction coefficient from 0.02 to 0.2 among other solids, high stiffness, high thermal stability and non-adherent characteristics that augments the mechanical and tribological properties and concurrently protect against hostile environments that eventually upsurges the life of components.

show abstract

Molecular simulation of geometrically optimized polyoxymethylene/poly (vinylalcohol) gel membrane for electroless scrubbing Ni(II) ions

Cited by 14 publications

References 33 publications

The Sips isotherm equation: Often used and sometimes misused

The Sips isotherm equation: Often used and sometimes misused

Sludge-derived biochar: Physicochemical characteristics for environmental remediation

A review: advancements in fluoro-based polymers for aggrandizing anti-galling and wear resistant characteristics

Contact Info

Product

Resources

About