The influence of the combined impact of shear stress and cavitation on the structure and sorption properties of chitin

Lipatova, I. M.; Лосев, Н. В.; Makarova, L. I.

doi:10.1016/j.carbpol.2019.01.038

Cited by 18 publications

(3 citation statements)

References 50 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The main factors influencing the deacetylation reaction are the alkali concentration, reaction time, solid/liquid ratio, temperature, and the size of the chitin particles. Several alternative methods have been studied to improve or replace conventional alkaline hydrolysis, including enzymatic agents, vapor explosion, microwave deacetylation, and ultrasonic deacetylation [20].…”

mentioning

confidence: 99%

Chitosan based-nanoparticles and nanocapsules: Overview, physicochemical features, applications of a nanofibrous scaffold, and bioprinting

Shoueir

El-Desouky

Rashad

et al. 2021

International Journal of Biological Macromolecules

130

View full text Add to dashboard Cite

mentioning

confidence: 99%

Chitosan based-nanoparticles and nanocapsules: Overview, physicochemical features, applications of a nanofibrous scaffold, and bioprinting

Shoueir

El-Desouky

Rashad

et al. 2021

International Journal of Biological Macromolecules

130

View full text Add to dashboard Cite

“…After brief agitation with Ultra-turrax, α-chitin showed an increased porosity and surface area due to deacylation. The cavitation treatment resulted in a significant increase in the ionic dye uptake and a reduction in the saturation time compared to the raw material [195]. Some studies on glucose have reported that ESR showed the appearance of similar radicals in γ-irradiation and ultrasonication [196].…”

Section: Cavitationmentioning

confidence: 97%

Mechanochemical Degradation of Biopolymers

Jicsinszky,

Bucciol,

Chaji

et al. 2023

Molecules

View full text Add to dashboard Cite

Mechanochemical treatment of various organic molecules is an emerging technology of green processes in biofuel, fine chemicals, or food production. Many biopolymers are involved in isolating, derivating, or modifying molecules of natural origin. Mechanochemistry provides a powerful tool to achieve these goals, but the unintentional modification of biopolymers by mechanochemical manipulation is not always obvious or even detectable. Although modeling molecular changes caused by mechanical stresses in cavitation and grinding processes is feasible in small model compounds, simulation of extrusion processes primarily relies on phenomenological approaches that allow only tool- and material-specific conclusions. The development of analytical and computational techniques allows for the inline and real-time control of parameters in various mechanochemical processes. Using artificial intelligence to analyze process parameters and product characteristics can significantly improve production optimization. We aim to review the processes and consequences of possible chemical, physicochemical, and structural changes.

show abstract

“…The biosorption of anionic dyes has been evaluated in studies on waterinsoluble biopolymers such as chitosan and cellulose. Chitosan has shown stability and a great sorption capacity in acidic media [14,15]. On the other hand, cellulose (the most abundant polymer in nature) is found in agro-industrial wastes and with a minimum of processing can be utilized for the removal of cationic and anionic dyes [16,17].…”

Section: Introductionmentioning

confidence: 99%

Biosorptive removal of acid orange 74 dye by HCl-pretreated Lemna sp.

et al. 2020

View full text Add to dashboard Cite

Acid orange 74 (AO74) is a chromium-complex monoazo acid dye widely used in the textile industry. Due to being highly toxic and non-biodegradable, it must be removed from polluted water to protect the health of people and the environment. The aim of this study was twofold: to evaluate the biosorption of AO74 from an aqueous solution by utilizing HCl-pretreated Lemna sp. (HPL), and to examine dye desorption from the plant material. The maximum capacity of AO74 biosorption (64.24 mg g-1) was reached after 4 h at the most adequate pH, which was 2. The biosorption capacity decreased 25% (to 48.18 mg g-1) during the second biosorption/desorption cycle and remained essentially unchanged during the third cycle. The pseudo-second-order kinetics model concurred well with the experimental results of assays involving various levels of pH in the eluent solution and distinct initial concentrations of AO74. NaOH (0.01 M) was the best eluent solution. The Toth isotherm model best described AO74 biosorption equilibrium data. FTIR analysis confirmed the crucial role of HPL proteins in AO74 biosorption. SEM-EDX and CLSM techniques verified the effective biosorption/desorption of the dye during the three cycles. Therefore, HPL has potential for the removal of AO74 dye from wastewaters.

show abstract

The influence of the combined impact of shear stress and cavitation on the structure and sorption properties of chitin

Cited by 18 publications

References 50 publications

Chitosan based-nanoparticles and nanocapsules: Overview, physicochemical features, applications of a nanofibrous scaffold, and bioprinting

Chitosan based-nanoparticles and nanocapsules: Overview, physicochemical features, applications of a nanofibrous scaffold, and bioprinting

Mechanochemical Degradation of Biopolymers

Biosorptive removal of acid orange 74 dye by HCl-pretreated Lemna sp.

Contact Info

Product

Resources

About