12 documents found, page 1 of 2

Optimizing lignin cationization: unveiling the impact of reaction conditions th...

Lignin, a natural and abundant biopolymer, holds great potential for cosmetic applications. However, its limited solubility and inherently negative charge restrict its use in certain formulations. This is particularly relevant for hair conditioning, where a positively charged polymer is preferred to effectively treat negatively charged damaged hair. To overcome this limitation, lignin extracted from acacia wood...

Innovative approaches to mitigating microplastic pollution in effluents and soils

Microplastic pollution represents a significant environmental challenge, as microplastics accumulate in effluents and soils, causing serious risks to ecosystems and human health. Efficient removal of these contaminants is essential to mitigate their potential adverse effects. This review summarizes and critically analyses current methods for the removal of microplastics from effluents and soils, focusing on the...

Lignin extraction from acacia wood: crafting deep eutectic solvents with a syst...

Lignin is a complex biopolymer whose efficient extraction from biomass is crucial for various applications. Deep eutectic solvents (DES), particularly natural-origin DES (NADES), have emerged as promising systems for lignin fractionation and separation from other biomass components. While ternary DES offer enhanced fractionation performance, the role of each component in these mixtures remains unclear. In this ...

Effect of the dispersion state of minerals on the properties of cellulose nanof...

The dispersion state and the efficiency of the mixture of the different components in a composite film have an important impact on its mechanical and optical properties. In the present work, the impacts of different dispersion treatments on the disaggregation state of fibrous clay particles in water, and on the properties of related cellulose nanofiber (CNF)-based composite films, were evaluated. X-ray diffract...

On hair care physicochemistry: From structure and degradation to novel biobased...

Hair is constantly exposed to various adverse external stimuli, such as mechanical or thermal factors, that may cause damage or cause it to lose its shine and smooth appearance. These undesirable effects can be minimized by using hair conditioners, which repair the hair and restore the smooth effect desired by the consumer. Some of the currently used conditioning agents present low biodegradability and high tox...

Heavy Metals Removal from Aqueous Solutions by Multiwall Carbon Nanotubes: Effe...

Carbon nanotubes (CNTs) are one of the most studied nanoparticles due to their physical, chemical and electronic properties. However, strong Van der Waals bonds, which promote CNTs aggregation are usually present, affecting their unique properties. Avoiding CNTs aggregation is one of the main difficulties when using these nanoparticles. Regarding the adsorption capacity of CNTs, the tendency of CNTs to aggregat...

Editorial: Advanced Processes for Wastewater Treatment and Water Reuse

CFD simulation of a turbulent fiber suspension flow – a modified near-wall trea...

." title="9. Correlating Aggregates Structure with PEL Characteristics Using an Experimental Design Methodology">Correlating Aggregates Structure with PEL Characteristics Using an Experimental...

Aggregation of particles is fundamental for improving the performance of many solid/liquid processes. Aggregation can be induced by different means, one of the most common being based on the addition of polymeric additives, namely polyelectrolytes (PEL). In this work we have studied the flocculation of precipitated calcium carbonate (PCC), used as filler in papermaking, induced by a range of cationic polyacryla...

An interactive video to demonstrate how to characterize nanoparticles

This work deals with the production of multimedia tools for distance learning. The course will be essentially based on hypermedia contents and can be delivered either in the e-learning or b-learning format. The option was to use interactive videos and, in this demonstration, a video used for the teaching of nanoparticles characterization using dynamic light scattering will be presented. This choice allows the s...