Recovery of gallium from leach solutions of zinc refinery residues by stepwise solvent extraction with N235 and Cyanex 272

Zhang, Kuifang; Qiu, Lili; Tao, Jinzhang; Zhong, Xiaocong; Lin, Zhencong; Wang, Ruixiang; Liu, Zhiqiang

doi:10.1016/j.hydromet.2021.105722

Cited by 58 publications

(11 citation statements)

References 41 publications

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“…Oxidized form of cellulose has interesting properties for example gelation, complexation, adhesion, anti-flocculation, and numerous biological effects which raises the applications of cellulose manifold in medical applications, adhesion-prevention and wound-healing. [218][219][220][221] Therefore, bearing in mind the importance of oxidizedcellulose, recently Lindh's group studied the surface-limited oxidation of cellulose in which the primary alcoholic group transformed into the carboxylic acid functionality in presence of oxone (Scheme 82). [222] On the other hand, quite recently, Dachavaram et al reported a method for micron cellulose oxidation by virtue of oxone in combination with TEMPO-NaOCl in aq.…”

Section: Oxidation Of Alcoholsmentioning

confidence: 99%

“…Cellulose, one of the most abundant biomolecule on earth is not only renewable and biodegradable but also eco‐friendly as well as sustainable carbohydrate polymeric material, useful in a wide range of arenas. Oxidized form of cellulose has interesting properties for example gelation, complexation, adhesion, anti‐flocculation, and numerous biological effects which raises the applications of cellulose manifold in medical applications, adhesion‐prevention and wound‐healing [218–221] . Therefore, bearing in mind the importance of oxidized‐cellulose, recently Lindh's group studied the surface‐limited oxidation of cellulose in which the primary alcoholic group transformed into the carboxylic acid functionality in presence of oxone (Scheme 82).…”

Section: Oxidation Of Diverse Functional Groupsmentioning

confidence: 99%

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Applications of Oxone® in Organic Synthesis: An Emerging Green Reagent of Modern Era

2022

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Presently, the major cornerstone of the research community is to develop green as well as sustainable protocols involving inexpensive catalysts and/or reagents without the usage of hazardous solvents under globally friendlier conditions in order to shelter both mankind and environment. Therefore, needless to say, there is always a supreme need to surrogate the older, costlier and unsafe strategies with the novel economically inexpensive and environmental benign ones. To this context, in recent past, oxone® (triple salt), a very cheap oxidizing agent having the chemical formula 2KHSO5 ⋅ KHSO4 ⋅ K2SO4 and enwrapped with the unique characteristics like easy handling, non‐toxic, safe, eco‐friendly, non‐polluting, stable, and nicely soluble in water, in addition to its utility for large‐scale synthesis etc. Bearing the importance of this versatile reagent in mind, we envisioned to update the recent advances made in this direction. Consequently, in this particular review article, the developments made in the arena of oxone chemistry covering from 2013 to 2020 have been revealed as no report appeared in the literature after a wonderful Chem. Rev. published by the group of Hussain in 2013. Herein, a comprehensive detail of a variety of oxidative transformations along with the complete plausible mechanistic steps have been exposed. For sure, present review would be a very helpful tool to the scientific community not only working in the area of organic synthesis but also to the researchers working in other branches of science and technologies as well.

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Section: Oxidation Of Alcoholsmentioning

confidence: 99%

Section: Oxidation Of Diverse Functional Groupsmentioning

confidence: 99%

Applications of Oxone® in Organic Synthesis: An Emerging Green Reagent of Modern Era

2022

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“…In the past few decades, various advanced computational approaches, e.g., finite element, numerical linear algebra, statistics, numerical analysis, tensor analysis, and artificial intelligence, have been applied in various fields of study such as chemical engineering [29][30][31][32][33][34][35][36][37], electrical engineering [38][39][40][41][42][43][44][45][46], biomedical engineering [47][48][49][50][51][52][53][54], civil engineering [55][56][57][58], social sciences [59][60][61][62][63][64][65][66][67][68][69], mechanical engineering [70][71][72][73][74][75][76]…”

Section: Artificial Neural Networkmentioning

confidence: 99%

Application of Wavelet Feature Extraction and Artificial Neural Networks for Improving the Performance of Gas–Liquid Two-Phase Flow Meters Used in Oil and Petrochemical Industries

et al. 2021

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Measuring fluid characteristics is of high importance in various industries such as the polymer, petroleum, and petrochemical industries, etc. Flow regime classification and void fraction measurement are essential for predicting the performance of many systems. The efficiency of multiphase flow meters strongly depends on the flow parameters. In this study, MCNP (Monte Carlo N-Particle) code was employed to simulate annular, stratified, and homogeneous regimes. In this approach, two detectors (NaI) were utilized to detect the emitted photons from a cesium-137 source. The registered signals of both detectors were decomposed using a discrete wavelet transform (DWT). Following this, the low-frequency (approximation) and high-frequency (detail) components of the signals were calculated. Finally, various features of the approximation signals were extracted, using the average value, kurtosis, standard deviation (STD), and root mean square (RMS). The extracted features were thoroughly analyzed to find those features which could classify the flow regimes and be utilized as the inputs to a network for improving the efficiency of flow meters. Two different networks were implemented for flow regime classification and void fraction prediction. In the current study, using the wavelet transform and feature extraction approach, the considered flow regimes were classified correctly, and the void fraction percentages were calculated with a mean relative error (MRE) of 0.4%. Although the system presented in this study is proposed for measuring the characteristics of petroleum fluids, it can be easily used for other types of fluids such as polymeric fluids.

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“…As shown, the absorption peak at 3048 cm -1 is related to the tensile vibration of OH group in proteins, fatty acids, carbohydrates, and lignin, which are due to its high contents in plant grain as well as N-H tensile bonding in amides. [24][25] Also, the peak at 2895 cm -1 is related to the =C-H bond. 23 Moreover, the peaks at 795 cm -1 and 926 cm -1 are attributed to the N-H and O-H functional groups, respectively.…”

Section: Characteristics Of the Adsorbentmentioning

confidence: 99%

Selective Removal of Sodium Ions from Aqueous Media Using Effective Adsorbents: Optimization by RSM and Genetic Algorithm

Yao

Hong²,

Dashtifard

et al. 2021

ACSi

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This study aimed to determine the best adsorbent among Moringa oleifera-derived activated carbon (AC), eggshell-derived CaO nanoparticles and CaO/Fe3O4 for sodium (Na+) removal from aqueous media. In the first step, the appropriate adsorbent for sodium adsorption was determined among the three adsorbents, which the results showed that the AC had the highest sorption efficiency. Then, response surface methodology (RSM) was used to evaluate the impact of different factors on the Na+ ion sorption efficiency using the AC. The highest removal efficiency was obtained to be 95.91% at optimum conditions such as pH of 11, contact time of 45 min, temperature of 25 °C, sodium ion concentration of 900 mg/L, and adsorbent dosage of 5 g/L. Also, the best conditions using the genetic algorithm was obtained at contact time of 94.97 min, adsorbent dosage of 3.52 g/L, Na+ ion concentration of 939.92 mg/L and pH value of 10.92. Moreover, the maximum sorption capacity using the Langmuir model was obtained to be 249.67 mg/g, which was a significant value. Besides, the equilibrium and kinetic studies indicated that the experimental data of sodium adsorption process were fitted well with the Langmuir isotherm model and the pseudo-second-order kinetic model, respectively. Furthermore, the thermodynamic study indicated that the sorption process was endothermic. Generally, among the three adsorbents used, activated carbon with a high removal efficiency and significant sorption capacity can be considered as a promising adsorbent for the removal of sodium from wastewater on an industrial scale.

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Recovery of gallium from leach solutions of zinc refinery residues by stepwise solvent extraction with N235 and Cyanex 272

Cited by 58 publications

References 41 publications

Applications of Oxone® in Organic Synthesis: An Emerging Green Reagent of Modern Era

Applications of Oxone® in Organic Synthesis: An Emerging Green Reagent of Modern Era

Application of Wavelet Feature Extraction and Artificial Neural Networks for Improving the Performance of Gas–Liquid Two-Phase Flow Meters Used in Oil and Petrochemical Industries

Selective Removal of Sodium Ions from Aqueous Media Using Effective Adsorbents: Optimization by RSM and Genetic Algorithm

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