Book Reviews

Robson, Jodie; Blackburn, Cathleen

doi:10.1087/095315103322422080

Cited by 3 publications

(3 citation statements)

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“…The average diameter range of the studied UK wool fibres was very similar to the ones reported by Robson et al 49 . Leicester wool fibres had a mean diameter of 22 µm and was the finest of the four varieties.…”

Section: Resultssupporting

confidence: 88%

Development of novel parameters for characterising scale morphology of wool fibre and its correlation with dye diffusion coefficient of acid dye

Paul,

Hewitt,

Rana

et al. 2023

Sci Rep

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This paper reports the development of novel surface parameters which can be used to characterise the scale structure of wool fibres obtained from different breeds. Scanning electron microscopy and subsequent image analysis technique were used to study wool fibres from Leicester, Dartmoor, Ryeland and Herdwick breeds of sheep. Novel scale parameters related to wool fibre’s effective chemical diffusion pathway were developed. Namely, the total scale perimeter per 100 µm fibre length and scale perimeter index, which is the total scale perimeter per 100 µm length divided by the fibre diameter. Wool fibres obtained from different breeds showed significant differences in their scale pattern with the change in fibre diameter. The scale perimeter per 100 µm length increased with the fibre diameter and showed a polynomial correlation. It was also demonstrated that an increase in the diameter of the wool fibre resulted in an increase in the apparent dye diffusion coefficient, which contrasts the established theory that finer fibres are associated with a higher dyeing rate. The increase in effective diffusion pathway (total scale perimeter per 100 µm) for the wool fibres (among different breeds) resulted in a higher dye diffusion rate at the initial phase of dyeing (liquor to surface).

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Section: Resultssupporting

confidence: 88%

Development of novel parameters for characterising scale morphology of wool fibre and its correlation with dye diffusion coefficient of acid dye

Paul,

Hewitt,

Rana

et al. 2023

Sci Rep

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“…To synthesize the adsorbent, initially, the graphitic carbon nitride was prepared by polymerizing 5 g melamine in a furnace at 550 °C for 4 h under air atmosphere [24]. Then, the composite of zeolite and graphitic carbon nitride (ZG) was prepared through Harry Robson's method for the synthesis of LTA zeolite [25]. To describe briefly, 8 mL of 0.20 M sodium hydroxide solution was prepared and divided in two parts.…”

Section: Adsorbent Synthesismentioning

confidence: 99%

Design of polyamidoamine dendrimer grafted zeolite to remove malachite green from aqueous media

Karimi,

Saraji

2023

Preprint

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The present study describes a new, non-toxic and low-cost composite of zeolite/graphitic carbon nitride modified with highly branched polyamidoamine dendrimer (ZMPA). Graphitic carbon nitride, as an inexpensive and non-toxic compound with different C-N bonds (-NH2), was applied to grow PAMAM on zeolite/g-C3N4 composite. Fourier transform infrared, X-ray diffraction analysis, field emission scanning electron microscopy and energy-dispersive X-ray analysis were used to confirm and characterize of ZMPA The adsorption properties associated with the adsorbent considered to remove malachite green (MG) were surveyed using the batch method. Therefore, the influential parameters on the performance of the adsorbent for the removal of MG, such as pH, contact time, initial concentration and adsorbent dosage, were investigated and optimized. The results showed that the maximum adsorption capability of ZMPA was determined to be 1111 mg g− 1 at pH 10 for 30 minutes. These results could be explained by the high electrostatic interaction, and/or trapped dye molecules in the cavities between the absorbed and the absorbent. The novel zeolite composite may be regarded as a promising adsorbent for MG removal in various wastewater samples (paint, textile industries) with high adsorption capacity and removal rate.

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“…Wool fibers available in the UK can be investigated by studying the dyeing behavior of the fibers. 1,35 This paper investigates the difference in dye uptake among wool fibers obtained from different UK sheep breeds, the type of dyeing isotherm they follow, and further analyses of the type of sorption. The thermodynamic parameters of the acid dyes on these wool fibers were calculated to understand the surface behavior of the wool fibers.…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Thermodynamic and Kinetic Behavior of Acid Dyes in Relation to Wool Fiber Morphology

Paul,

Hewitt,

Rana

et al. 2024

ACS Omega

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Wool fibers from several different sheep breeds in the UK have very limited applications. The main aim of this study was to establish an understanding of the dye sorption properties of different wool fibers through thermodynamics and kinetics of dyeing using Acid Red 1 dye. Wool fibers from Leicester, Ryeland, and Dartmoor sheep breeds were pretreated (to remove impurities) and dyed using Acid Red 1. Leicester showed 7% higher dye exhaustion than Dartmoor wool fibers (20% on mass of fiber). Dyeing equilibrium results for both Leicester and Dartmoor wool fibers were fitted to Langmuir and Freundlich isotherms, and the theoretical maximum sorption capacities were 164 and 144 mg g −1 , respectively. Leicester, Ryeland, and Dartmoor also followed the pseudo-second-order reaction kinetics. Thermodynamic parameters like Gibb's free energy (ΔG°) and standard affinity (Δμ°) of the fibers were calculated to understand the interaction of the Acid Red 1 with wool fibers. The difference in dye uptake was explained through the possible involvement of the scale opening gap (surface morphology) of the wool fibers.

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Book Reviews

Cited by 3 publications

References 0 publications

Development of novel parameters for characterising scale morphology of wool fibre and its correlation with dye diffusion coefficient of acid dye

Development of novel parameters for characterising scale morphology of wool fibre and its correlation with dye diffusion coefficient of acid dye

Design of polyamidoamine dendrimer grafted zeolite to remove malachite green from aqueous media

Investigation of the Thermodynamic and Kinetic Behavior of Acid Dyes in Relation to Wool Fiber Morphology

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