Oxidative polymerization of waste cooking oil with air under hydrodynamic cavitation

Rinaldi, Laura; Wu, Zhansheng; Giovando, Samuele; Bracco, Marco; Crudo, Daniele; Bosco, Valentina; Cravotto, Giancarlo

doi:10.1515/gps-2016-0142

Cited by 16 publications

(17 citation statements)

References 39 publications

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“…Cavitational bubble collapse leads to shockwaves that dramatically increase solid/liquid surface contact. Wider cavitation areas mean lower equipment costs and easier scalability, which make this reactor type more suitable for industrial applications (Rinaldi et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Cocoa bean shell waste valorisation; extraction from lab to pilot-scale cavitational reactors

Grillo

Boffa

Binello

et al. 2019

Food Research International

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102

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The use of zero-waste processes to integrate food-waste valorisation into the circular economy equation is currently one of the hottest topics in sustainability research. This goal is still far from being fully achieved despite the release of a number of patents and papers that deal with the topic. The present work aims to valorise cocoa shells, one of the main by-product of the roasting process, in order to enhance the effective extraction of high added value compounds by means of green protocols. The high potential added value of the residual waste has been demonstrated via a direct analytical comparison of extracts and bean composition. A range of raw matrix extraction procedures have been investigated in order to define the best solvent and technology; ultrasound (US) and hydrodynamic cavitation (HC) were compared with conventional methods. The high-energy microenvironments generated by cavitation substantially promote fast biomass deconstruction with low energy consumption. The optimized protocol couples

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Section: Introductionmentioning

confidence: 99%

Cocoa bean shell waste valorisation; extraction from lab to pilot-scale cavitational reactors

Grillo

Boffa

Binello

et al. 2019

Food Research International

Self Cite

102

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“…A four-fold reduction in waste-oil oxidation time was achieved by using the cavitational techniques. The results all indicate that the very effective RSD is wellmatched to a scale-up process [53].…”

Section: Emulsification Of Immiscible Mixturesmentioning

confidence: 69%

“…Moreover, they run into frequent clogging problems, resulting in profit loss, when treating solid-liquid mixtures. Rotary equipment and dynamic cavitational elements were developed with the aim of overcoming these problems and generating HC with less energy input [25,43,44,[50][51][52][53][54][55][56][57]. An example of this can be found in the rotor-stator device (RSD), which was developed by the University of Ljubljana.…”

Section: Hc Reactors: Technical Aspectsmentioning

confidence: 99%

Plant and Biomass Extraction and Valorisation under Hydrodynamic Cavitation

Ferreira

Crudo³

et al. 2019

Processes

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Hydrodynamic cavitation (HC) is a green technology that has been successfully used to intensify a number of process. The cavitation phenomenon is responsible for many effects, including improvements in mass transfer rates and effective cell-wall rupture, leading to matrix disintegration. HC is a promising strategy for extraction processes and provides the fast and efficient recovery of valuable compounds from plants and biomass with high quality. It is a simple method with high energy efficiency that shows great potential for large-scale operations. This review presents a general discussion of the mechanisms of HC, its advantages, different reactor configurations, its applications in the extraction of bioactive compounds from plants, lipids from algal biomass and delignification of lignocellulosic biomass, and a case study in which the HC extraction of basil leftovers is compared with that of other extraction methods.

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“…The high industrial interest and the relevant economic impact have stimulated research in this field in search of new technologies. Among them, acoustic and hydrodynamic cavitation could promote such reactions by radical generation or improved mass transfer [80,81].…”

Section: Discussionmentioning

confidence: 99%

Oxidative Cleavage of Fatty Acid Derivatives for Monomer Synthesis

et al. 2018

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Oxidative cleavage of fatty acids and fatty acid derivatives is a practical way to obtain bifunctional molecules that can be used in polycondensation reactions. Diacids, hydroxyacids, and amino acids can then be used to produce polyesters or polyamides and also a large range of other products, such as lubricants and plasticizers. Ozonolysis has long been the sole industrial process for oxidative cleavage, but recently, routes using hydrogen peroxide as a clean oxidant have regained interest. Hydrogen peroxide is easier to use, but the kinetics of the catalyzed reactions are still slow. Although several catalytic systems have been described in the literature, tungsten-based catalysts are still the preferred choices. Different catalysts can trigger different mechanisms, such as a radical mechanism instead of a catalytic reaction. In addition, some side products and co-products often disregarded in the literature, such as shorted cleavage products, indicate the presence of side reactions that affect the quality of the final products. The oxidative cleavages in continuous and batch processes have significant differences, which are discussed with an illustration of our understanding of the process used by Matrica S.p.A.

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Oxidative polymerization of waste cooking oil with air under hydrodynamic cavitation

Cited by 16 publications

References 39 publications

Cocoa bean shell waste valorisation; extraction from lab to pilot-scale cavitational reactors

Cocoa bean shell waste valorisation; extraction from lab to pilot-scale cavitational reactors

Plant and Biomass Extraction and Valorisation under Hydrodynamic Cavitation

Oxidative Cleavage of Fatty Acid Derivatives for Monomer Synthesis

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