Hybrid reactor based on hydrodynamic cavitation, ozonation, and persulfate oxidation for oxalic acid decomposition during rare-earth extraction processes

2019 ◽  
Vol 52 ◽  
pp. 326-335 ◽  
Author(s):  
Jongbok Choi ◽  
Mingcan Cui ◽  
Yonghyeon Lee ◽  
Junjun Ma ◽  
Jeonggwan Kim ◽  
...  
Keyword(s):  
Rare Earth ◽  
Oxalic Acid ◽  
Hydrodynamic Cavitation ◽  
Hybrid Reactor ◽  
Acid Decomposition ◽  
Persulfate Oxidation ◽  
Extraction Processes ◽  
Rare Earth Extraction

scholarly journals Multicomponent Model for the Prediction of Nuclear Waste/Rare-Earth Extraction Processes

Langmuir ◽  
2018 ◽  
Vol 34 (35) ◽  
pp. 10434-10447 ◽  
Author(s):  
Mario Špadina ◽  
Klemen Bohinc ◽  
Thomas Zemb ◽  
Jean-François Dufrêche
Keyword(s):  
Rare Earth ◽  
Nuclear Waste ◽  
Extraction Processes ◽  
Rare Earth Extraction ◽  
Multicomponent Model

scholarly journals Technical and Economic Feasibility of a Stable Yellow Natural Colorant Production from Waste Lemon Peel

2020 ◽  
Author(s):  
Rosaria Ciriminna ◽  
Billy Forest ◽  
Francesco Meneguzzo ◽  
Mario Pagliaro ◽  
Mark Hamann
Keyword(s):  
Physical Stability ◽  
Economic Feasibility ◽  
Water Soluble ◽  
Hydrodynamic Cavitation ◽  
Natural Colorant ◽  
Lemon Peel ◽  
Citrus Flavonoids ◽  
Extraction Processes ◽  
Solid Liquid ◽  
Insight Into

A brief technical and economic insight into producing the water-soluble yellow colorant limocitrol 3-O-6”-[3-hydroxyl-3-methylglutaryl)])-β-D-glucopyranoside from waste lemon peel via simple solid-liquid extraction in aqueous ethanol or via hydrodynamic cavitation of waste lemon peel in water, shows that the biocolorant can be obtained at affordable cost. Coupled to the simplicity and sustainability of the extraction processes suggested, the high chemical and physical stability of this polymethoxylated flavanol and the health benefits of citrus flavonoids, support industrialization of this new bioeconomy production.

Effect of Physical Parameters on the Stirred Separation Process in Rare Earth Extraction System

2014 ◽  
pp. 27-29
Author(s):  
Wang Shuchan ◽  
Zhang Zimu ◽  
Zhang Ting-An ◽  
Zhao Qiuyue ◽  
Liu Yan ◽  
...  
Keyword(s):  
Rare Earth ◽  
Separation Process ◽  
Extraction System ◽  
Physical Parameters ◽  
Rare Earth Extraction

Effect of Oxidation Behavior of (Nd,Dy)-Fe-B Magnet on Heavy Rare Earth Extraction Process

2021 ◽  
Vol 28 (2) ◽  
pp. 91-96
Author(s):  
Sangmin Park ◽  
◽  
Sun-Woo Nam ◽  
Sang-Hoon Lee ◽  
Myung-Suk Song ◽  
...  
Keyword(s):  
Rare Earth ◽  
Oxidation Behavior ◽  
Extraction Process ◽  
Heavy Rare Earth ◽  
Rare Earth Extraction

scholarly journals Real-Scale Integral Valorization of Waste Orange Peel via Hydrodynamic Cavitation

Processes ◽  
2019 ◽  
Vol 7 (9) ◽  
pp. 581 ◽  
Author(s):  
Francesco Meneguzzo ◽  
Cecilia Brunetti ◽  
Alexandra Fidalgo ◽  
Rosaria Ciriminna ◽  
Riccardo Delisi ◽  
...  
Keyword(s):  
Raw Materials ◽  
Orange Peel ◽  
Hydrodynamic Cavitation ◽  
Process Time ◽  
Low Degree ◽  
Hydroxycinnamic Acid Derivatives ◽  
Heavy Burden ◽  
Extraction Processes ◽  
Integral Energy ◽  
High Yields

Waste orange peel represents a heavy burden for the orange juice industry, estimated in several million tons per year worldwide; nevertheless, this by-product is endowed with valuable bioactive compounds, such as pectin, polyphenols, and terpenes. The potential value of the waste orange peel has stimulated the search for extraction processes, alternative or complementary to landfilling or to the integral energy conversion. This study introduces controlled hydrodynamic cavitation as a new route to the integral valorization of this by-product, based on simple equipment, speed, effectiveness and efficiency, scalability, and compliance with green extraction principles. Waste orange peel, in batches of several kg, was processed in more than 100 L of water, without any other raw materials, in a device comprising a Venturi-shaped cavitation reactor. The extractions of pectin (with a remarkably low degree of esterification), polyphenols (flavanones and hydroxycinnamic acid derivatives), and terpenes (mainly d-limonene) were effective and efficient (high yields within a few min of process time). The biomethane generation potential of the process residues was determined. The achieved results proved the viability of the proposed route to the integral valorization of waste orange peel, though wide margins exist for further improvements.

Effect of impurity ions on preparation of novel saponifier for rare earth extraction

2013 ◽  
Vol 31 (9) ◽  
pp. 905-910 ◽  
Author(s):  
Yanfei XIAO ◽  
Zongyu FENG ◽  
Xiaowei HUANG ◽  
Li HUANG ◽  
Yang XU ◽  
...  
Keyword(s):  
Rare Earth ◽  
Impurity Ions ◽  
Rare Earth Extraction

scholarly journals Rare Earth Extraction using Solvent Extraction: Which Factor Has the Most Significant Impact?

2020 ◽  
Vol 7 (2) ◽  
pp. 86-93
Author(s):  
Nurul Ain Ismail
Keyword(s):  
Rare Earth ◽  
Solvent Extraction ◽  
Factorial Design ◽  
Aqueous Phase ◽  
Extraction Process ◽  
Phase Ratio ◽  
Feed Composition ◽  
Five Factors ◽  
Acid Type ◽  
Rare Earth Extraction

Using a two-level factorial design, a study was undertaken to change the parameters impacting the recovery of rare earth from rare earth mixture. The experimental design was used to screen and identify the major contributing aspects to rare earth recovery. The experiment aims to isolate samarium from a mixture of samarium, europium, and gadolinium. Factors involved consist of pH (pH 1 and pH 6), acid type (nitric acid and hydrochloric acid) and concentration (1.0M and 5.0M), mixing duration (30 min and 120 min), feed composition (20% samarium and 80% samarium), type of diluent (hexane and chloroform), temperature (room temperature and 60°C) and organic to aqueous phase ratio (1:1 and 2:1). The results showed that the samarium recovery was in the range of 0.98% to 90.88%. Based on analysis variance (ANOVA), five factors significantly affect the samarium recovery out of eight factors explored. The five factors according to the most significant order are pH> feed composition> organic to aqueous phase ratio>acid concentration>acid type>mixing duration>type of diluent> temperature.  Statistical analysis shows that the linear model is significant, with the value of R2 is 0.9886. Based on the statistical data, five significant variables influence the separation of samarium. This research shows that two-level factorial design can anticipate significant variables impacting rare earth separation, particularly samarium, in the solvent extraction process.

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