Ultrasonics Sonochemistry最新文献_第7页

Red cabbage anthocyanin-rich natural colorant: Optimization of ultrasound-assisted extraction, microencapsulation, bioaccessibility, and functional yogurt development 红甘蓝花青素天然着色剂：超声辅助提取、微胶囊化、生物可及性优化及功能性酸奶开发

IF 9.7 1区化学 Q1 ACOUSTICS

Ultrasonics Sonochemistry

Pub Date : 2026-01-01 Epub Date: 2025-12-04 DOI: 10.1016/j.ultsonch.2025.107702

Sumandeep Kaur , Amisha Rani , Reshma Thakur , Abhilasha Sharma , Kritika Kuksal , Aman Sharma , Arti Shivraj Nile , Shivraj Hariram Nile

Anthocyanins from red cabbage (Brassica oleracea var. capitata f. rubra) are promising natural pigments with notable health benefits, but their thermal and gastrointestinal instability limits functional food applications. This study employed ultrasound-assisted extraction (UAE) and spray-drying microencapsulation to enhance their stability, bioaccessibility, and functionality. Optimization using a Box–Behnken design (pH 3.0–5.0, 30–60 °C, 20–90 min, 0.025–0.05 g/mL solid–liquid ratio) identified optimal UAE conditions (pH 3.5, 45 °C, 55 min, 0.0375 g/mL), yielding 125.72 ± 0.83 mg/L anthocyanins. Freeze drying retained the highest anthocyanin content (129.02 ± 3.36 mg/L), while spray-drying with 10 % maltodextrin achieved excellent encapsulation efficiency (96.36 ± 0.80 %) and yield (99.40 %). FTIR confirmed the presence of phenolic groups, and SEM revealed spherical microcapsules (∼10.27 µm) with smooth surfaces. Encapsulation significantly improved thermal stability at 70 °C, reducing the degradation rate constant (0.00043 min⁻¹) and increasing half-life (1919.02 min), compared to non-encapsulated samples. During simulated digestion, bioaccessibility of encapsulated anthocyanins was lower in the oral (53.28 %) and intestinal (25.37 %) phases than free forms, but stability was enhanced. Antioxidant activity (DPPH: 66.90 %, ABTS: 71.76 %) and enzyme inhibition (α-amylase IC₅₀: 46.00 µg/mL, α-glucosidase IC₅₀: 51.51 µg/mL) indicated potent bioactivity. Cytotoxicity testing on HEK-293 cells showed > 90 % viability, confirming safety. Yogurt fortified with 3 % encapsulated powder received high sensory scores (8.30 ± 0.86), especially for color and taste. These findings validate the integrated UAE and encapsulation approach as a scalable method to stabilize red cabbage anthocyanins for functional food applications.

红甘蓝（Brassica oleracea变种. capitata f. rubra）中的花青素是一种很有前途的天然色素，具有显著的健康益处，但其热稳定性和胃肠道不稳定性限制了其在功能性食品中的应用。本研究采用超声辅助提取（UAE）和喷雾干燥微胶囊化来提高其稳定性、生物可及性和功能性。采用Box-Behnken设计优化（pH 3.0-5.0, 30-60°C, 20-90 min，料液比0.025-0.05 g/mL）确定了最佳的UAE条件（pH 3.5, 45°C, 55 min, 0.0375 g/mL），产花青素125.72±0.83 mg/L。冷冻干燥的花青素含量最高（129.02±3.36 mg/L）， 10%麦芽糊精喷雾干燥的包封率为96.36±0.80%，包封率为99.40%。FTIR证实了酚基的存在，SEM显示了表面光滑的球形微胶囊（~ 10.27µm）。与未封装的样品相比，封装显著提高了70°C时的热稳定性，降低了降解速率常数（0.00043 min-1），延长了半衰期（1919.02 min）。在模拟消化过程中，包被花青素在口腔（53.28%）和肠道（25.37%）阶段的生物可及性低于游离形式，但稳定性增强。抗氧化活性（DPPH: 66.90%, ABTS: 71.76%）和酶抑制活性（α-淀粉酶IC50: 46.00µg/mL， α-葡萄糖苷酶IC50: 51.51µg/mL）显示出较强的生物活性。细胞毒性试验显示HEK-293细胞存活率为90%以上，证实其安全性。添加3%胶囊化粉的酸奶感官评分较高（8.30±0.86），其中色、味评分最高。这些发现验证了综合UAE和封装方法作为一种可扩展的方法来稳定红甘蓝花青素的功能食品应用。

{"title":"Red cabbage anthocyanin-rich natural colorant: Optimization of ultrasound-assisted extraction, microencapsulation, bioaccessibility, and functional yogurt development","authors":"Sumandeep Kaur , Amisha Rani , Reshma Thakur , Abhilasha Sharma , Kritika Kuksal , Aman Sharma , Arti Shivraj Nile , Shivraj Hariram Nile","doi":"10.1016/j.ultsonch.2025.107702","DOIUrl":"10.1016/j.ultsonch.2025.107702","url":null,"abstract":"<div><div>Anthocyanins from red cabbage (<em>Brassica oleracea</em> var. <em>capitata</em> f. <em>rubra</em>) are promising natural pigments with notable health benefits, but their thermal and gastrointestinal instability limits functional food applications. This study employed ultrasound-assisted extraction (UAE) and spray-drying microencapsulation to enhance their stability, bioaccessibility, and functionality. Optimization using a Box–Behnken design (pH 3.0–5.0, 30–60 °C, 20–90 min, 0.025–0.05 g/mL solid–liquid ratio) identified optimal UAE conditions (pH 3.5, 45 °C, 55 min, 0.0375 g/mL), yielding 125.72 ± 0.83 mg/L anthocyanins. Freeze drying retained the highest anthocyanin content (129.02 ± 3.36 mg/L), while spray-drying with 10 % maltodextrin achieved excellent encapsulation efficiency (96.36 ± 0.80 %) and yield (99.40 %). FTIR confirmed the presence of phenolic groups, and SEM revealed spherical microcapsules (∼10.27 µm) with smooth surfaces. Encapsulation significantly improved thermal stability at 70 °C, reducing the degradation rate constant (0.00043 min<sup>−1</sup>) and increasing half-life (1919.02 min), compared to non-encapsulated samples. During simulated digestion, bioaccessibility of encapsulated anthocyanins was lower in the oral (53.28 %) and intestinal (25.37 %) phases than free forms, but stability was enhanced. Antioxidant activity (DPPH: 66.90 %, ABTS: 71.76 %) and enzyme inhibition (α-amylase IC<sub>50</sub>: 46.00 µg/mL, α-glucosidase IC<sub>50</sub>: 51.51 µg/mL) indicated potent bioactivity. Cytotoxicity testing on HEK-293 cells showed > 90 % viability, confirming safety. Yogurt fortified with 3 % encapsulated powder received high sensory scores (8.30 ± 0.86), especially for color and taste. These findings validate the integrated UAE and encapsulation approach as a scalable method to stabilize red cabbage anthocyanins for functional food applications.</div></div>","PeriodicalId":442,"journal":{"name":"Ultrasonics Sonochemistry","volume":"124 ","pages":"Article 107702"},"PeriodicalIF":9.7,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145690072","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Sono-electrolysis: A look into the distinguished effects of direct and indirect sonication at high frequency ultrasounds (490 kHz) 超声电解：高频超声（490khz）下直接和间接超声的不同效果观察

IF 9.7 1区化学 Q1 ACOUSTICS

Ultrasonics Sonochemistry

Pub Date : 2026-01-01 Epub Date: 2025-12-09 DOI: 10.1016/j.ultsonch.2025.107716

Kaouther Kerboua , Md Hujjatul Islam , Nour Hane Merabet , Henrik E. Hansen , Frode Seland , Odne S. Burheim , Bruno G. Pollet

This study investigates the impact of direct and indirect high-frequency (490 kHz) ultrasonication on alkaline water electrolysis for hydrogen production. Calorimetric analysis reveal that direct sonication transmits 54.17 W of acoustic power, corresponding to an efficiency of 77.39 %, whereas indirect configuration achieves substantially lower efficiencies. Hydrogen quantification shows that conventional electrolysis alone produces 0.288 mM H₂ in 60 min (0.08 mM/s), indirect sono-electrolysis improves yields modestly by 3–6 %, while direct sono-electrolysis reaches 0.777 mM in 60 min, representing a 170 % enhancement. This improvement stems from both sonolytic hydrogen generation (0.448 mM) and electrochemical synergy (0.034 mM). Electrochemical characterizations demonstrate enhanced current densities, reduced Tafel slopes, and improved kinetics for both HER and OER under direct ultrasound exposure, attributed to localized cavitation, bubble detachment, and intensified mass transport. Modeling of cavitation dynamics confirm that passing from indirect to direct sonication increases bubble compression ratios up to 8.64, resulting in order-of-magnitude increases in collapse temperature and hydrogen yields. These findings highlight the strong dependence of sono-electrolysis performance on acoustic coupling geometry, with direct configurations offering a promising pathway toward energy-efficient hydrogen production.

研究了直接和间接高频（490 kHz）超声对碱水电解制氢的影响。量热分析表明，直接声发射的声功率为54.17 W，效率为77.39%，而间接声发射的效率要低得多。氢定量分析表明，常规电解在60分钟内产生0.288 mM H2 (0.08 mM/s)，间接超声电解可略微提高产量3 - 6%，而直接超声电解在60分钟内可达到0.777 mM，提高了170%。这一改进来自于声波分解制氢（0.448 mM）和电化学协同作用（0.034 mM）。电化学表征表明，在超声直接照射下，电流密度增强，Tafel斜率降低，HER和OER动力学改善，这归因于局部空化、气泡脱离和质量传递加剧。空化动力学模型证实，从间接超声到直接超声的转换使气泡压缩比提高到8.64，从而导致崩溃温度和氢气产量的数量级提高。这些发现强调了声电解性能对声耦合几何形状的强烈依赖性，直接配置为节能制氢提供了一条有希望的途径。

{"title":"Sono-electrolysis: A look into the distinguished effects of direct and indirect sonication at high frequency ultrasounds (490 kHz)","authors":"Kaouther Kerboua , Md Hujjatul Islam , Nour Hane Merabet , Henrik E. Hansen , Frode Seland , Odne S. Burheim , Bruno G. Pollet","doi":"10.1016/j.ultsonch.2025.107716","DOIUrl":"10.1016/j.ultsonch.2025.107716","url":null,"abstract":"<div><div>This study investigates the impact of direct and indirect high-frequency (490 kHz) ultrasonication on alkaline water electrolysis for hydrogen production. Calorimetric analysis reveal that direct sonication transmits 54.17 W of acoustic power, corresponding to an efficiency of 77.39 %, whereas indirect configuration achieves substantially lower efficiencies. Hydrogen quantification shows that conventional electrolysis alone produces 0.288 mM H<sub>2</sub> in 60 min (0.08 mM/s), indirect sono-electrolysis improves yields modestly by 3–6 %, while direct sono-electrolysis reaches 0.777 mM in 60 min, representing a 170 % enhancement. This improvement stems from both sonolytic hydrogen generation (0.448 mM) and electrochemical synergy (0.034 mM). Electrochemical characterizations demonstrate enhanced current densities, reduced Tafel slopes, and improved kinetics for both HER and OER under direct ultrasound exposure, attributed to localized cavitation, bubble detachment, and intensified mass transport. Modeling of cavitation dynamics confirm that passing from indirect to direct sonication increases bubble compression ratios up to 8.64, resulting in order-of-magnitude increases in collapse temperature and hydrogen yields. These findings highlight the strong dependence of sono-electrolysis performance on acoustic coupling geometry, with direct configurations offering a promising pathway toward energy-efficient hydrogen production.</div></div>","PeriodicalId":442,"journal":{"name":"Ultrasonics Sonochemistry","volume":"124 ","pages":"Article 107716"},"PeriodicalIF":9.7,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145731838","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Exploring the synergistic potential of pH and ultrasonication on the functional properties of pea and lentil protein isolates and its formulation in food product 探讨pH和超声波对豌豆和扁豆分离蛋白功能特性及其食品配方的协同作用

IF 9.7 1区化学 Q1 ACOUSTICS

Ultrasonics Sonochemistry

Pub Date : 2026-01-01 Epub Date: 2025-12-10 DOI: 10.1016/j.ultsonch.2025.107718

Mehwish Arshad , Rana Muhammad Aadil , Moazzam Rafiq Khan , Abid Aslam Maan , Anubhav Pratap-Singh

The substitution of meat proteins with plant-based proteins from various sources is often motivated by nutritional considerations. However, the inherent limited solubility of plant proteins, which results in suboptimal techno-functional properties, remains a persistent challenge in food formulation. The purpose of this study was to utilize unique properties of pea (Pisum sativum L.) and lentil (Lens culinaris) through ultrasonication and pH variation in order to develop a stable and consumable protein-based product. For this purpose, pea and lentils powders were subjected to salt extraction (SE) and proceeded to further treatment with ultrasonication and pH shifting at pH 2, 4, 10 and 12 with ultrasound assisted extraction (UAE) at 20 kHz at 20 °C for 5 min for each treatment. The developed protein isolates (PIs) after these treatments were analyzed for functional properties including surface hydrophobicity, solubility, foaming capacity and stability, emulsifying activity and stability indices, turbidity and molecular weight. Among these treatments, the pH-12 treated samples showed optimal values for the functional profile, and this treatment was selected for further development of meat-analogous nuggets through assorted combinations of pea protein isolate (PPI) and lentil protein isolate (LPI) along with control treatment containing chicken nuggets. After development, nuggets were further tested for moisture content, total plate count and textural hardness for a storage period of 4 weeks along with sensory profile analyses of the developed nuggets. Meat-analogous nuggets prepared from 60 % LPI and 40 % PPI had an optimal response to texture profile and were also favored in sensory profile. This product might help the protein requirement as a vegan-based diet and enhance peas and lentils productivity into a marketable and nourishing product if it were to be developed more widely and commercialized.

用各种来源的植物性蛋白质替代肉类蛋白质通常是出于营养方面的考虑。然而，植物蛋白固有的溶解度有限，导致其技术功能性能不理想，这仍然是食品配方中一个持续的挑战。本研究的目的是利用豌豆（Pisum sativum L.）和扁豆（Lens culinaris）的独特特性，通过超声波和pH变化来开发一种稳定且可消费的蛋白基产品。为此，对豌豆和扁豆粉末进行盐提取（SE），并在pH值为2、4、10和12的情况下进行超声和pH变化的进一步处理，超声辅助提取（UAE）在20°C， 20 kHz，每次处理5分钟。分析了这些处理后的分离蛋白的功能特性，包括表面疏水性、溶解度、起泡能力和稳定性、乳化活性和稳定性指标、浊度和分子量。在这些处理中，pH-12处理的样品显示出最佳的功能特征值，并选择该处理通过豌豆分离蛋白（PPI）和扁豆分离蛋白（LPI）的组合以及含有鸡块的对照处理来进一步开发类似肉的鸡块。开发后，进一步测试了金块的水分含量、总板数和纹理硬度，并对开发后的金块进行了感官分析。由60% LPI和40% PPI制备的肉类鸡块对纹理特征的反应最佳，并且在感官特征上也受到青睐。如果该产品得到更广泛的开发和商业化，将有助于满足素食者对蛋白质的需求，并提高豌豆和小扁豆的生产力，使其成为一种适销对路的营养产品。

{"title":"Exploring the synergistic potential of pH and ultrasonication on the functional properties of pea and lentil protein isolates and its formulation in food product","authors":"Mehwish Arshad , Rana Muhammad Aadil , Moazzam Rafiq Khan , Abid Aslam Maan , Anubhav Pratap-Singh","doi":"10.1016/j.ultsonch.2025.107718","DOIUrl":"10.1016/j.ultsonch.2025.107718","url":null,"abstract":"<div><div>The substitution of meat proteins with plant-based proteins from various sources is often motivated by nutritional considerations. However, the inherent limited solubility of plant proteins, which results in suboptimal techno-functional properties, remains a persistent challenge in food formulation. The purpose of this study was to utilize unique properties of pea (<em>Pisum sativum L.</em>) and lentil (<em>Lens culinaris</em>) through ultrasonication and pH variation in order to develop a stable and consumable protein-based product. For this purpose, pea and lentils powders were subjected to salt extraction (SE) and proceeded to further treatment with ultrasonication and pH shifting at pH 2, 4, 10 and 12 with ultrasound assisted extraction (UAE) at 20 kHz at 20 °C for 5 min for each treatment. The developed protein isolates (PIs) after these treatments were analyzed for functional properties including surface hydrophobicity, solubility, foaming capacity and stability, emulsifying activity and stability indices, turbidity and molecular weight. Among these treatments, the pH-12 treated samples showed optimal values for the functional profile, and this treatment was selected for further development of meat-analogous nuggets through assorted combinations of pea protein isolate (PPI) and lentil protein isolate (LPI) along with control treatment containing chicken nuggets. After development, nuggets were further tested for moisture content, total plate count and textural hardness for a storage period of 4 weeks along with sensory profile analyses of the developed nuggets. Meat-analogous nuggets prepared from 60 % LPI and 40 % PPI had an optimal response to texture profile and were also favored in sensory profile. This product might help the protein requirement as a vegan-based diet and enhance peas and lentils productivity into a marketable and nourishing product if it were to be developed more widely and commercialized.</div></div>","PeriodicalId":442,"journal":{"name":"Ultrasonics Sonochemistry","volume":"124 ","pages":"Article 107718"},"PeriodicalIF":9.7,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145731964","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Ultrasound-assisted tannic acid crosslinking of myofibrillar protein-stabilized high internal phase emulsions: Enhanced stability, mechanical properties, and 3D printability 超声辅助单宁酸交联肌原纤维蛋白稳定高内相乳剂：增强稳定性、机械性能和3D打印能力

IF 9.7 1区化学 Q1 ACOUSTICS

Ultrasonics Sonochemistry

Pub Date : 2026-01-01 Epub Date: 2025-12-02 DOI: 10.1016/j.ultsonch.2025.107703

Zitong Dong, Feiyu Zhang, Peng Wang, Xinglian Xu

The study investigated the synergistic effects of high ultrasound (HS) treatment and tannic acid (TA) conjugation on the structural and interfacial properties of myofibrillar protein (MP), and their roles in stabilizing high internal phase emulsions (HIPEs). Spectroscopic and interfacial analyses showed that HS promoted TA-induced covalent conjugation via exposure of reactive groups, driving conformational rearrangements and formation of more compact aggregates. At moderate TA concentrations, smaller particle size and enhanced interfacial performance were observed for MP–TA conjugates, as evidenced by accelerated adsorption kinetics and elevated dilatational moduli of interfacial films. In HIPEs, these changes yielded smaller and more uniform droplets, higher viscosity, larger linear viscoelastic regions, and greater yield stress. These improvements resulted in greater resistance to coalescence and oiling-off under storage, heating, and centrifugal stress. MP-based HIPEs with 10μM g⁻¹ TA and 240 W HS exhibited the most favorable balance of droplet architecture, rheology and stability. In addition, the optimized HIPEs displayed good printability in a preliminary 3D printing test, highlighting their potential for structuring food matrices. Overall, this work elucidates how HS-assisted TA conjugation alters MP conformation, interfacial assembly and emulsion rheology, providing a mechanistic basis for designing robust MP-stabilized HIPEs.

研究了高超声（HS）处理和单宁酸（TA）偶联对肌纤维蛋白（MP）结构和界面性质的协同作用，以及它们在稳定高内相乳剂（HIPEs）中的作用。光谱和界面分析表明，HS通过暴露反应基团促进ta诱导的共价偶联，驱动构象重排和形成更致密的聚集体。在中等TA浓度下，MP-TA缀合物的颗粒尺寸变小，界面性能增强，这可以通过加速吸附动力学和界面膜的扩张模量升高来证明。在HIPEs中，这些变化产生了更小、更均匀的液滴、更高的粘度、更大的线性粘弹性区域和更大的屈服应力。这些改进提高了在储存、加热和离心应力下抗聚结和脱油的能力。当TA为10μM g−1、HS为240 W时，mp基HIPEs在液滴结构、流变性和稳定性方面达到了最佳平衡。此外，优化后的HIPEs在初步3D打印测试中显示出良好的可打印性，突出了它们在构建食物基质方面的潜力。总的来说，这项工作阐明了hs辅助TA共轭如何改变MP构象、界面组装和乳液流变学，为设计稳健的MP稳定HIPEs提供了机制基础。

{"title":"Ultrasound-assisted tannic acid crosslinking of myofibrillar protein-stabilized high internal phase emulsions: Enhanced stability, mechanical properties, and 3D printability","authors":"Zitong Dong, Feiyu Zhang, Peng Wang, Xinglian Xu","doi":"10.1016/j.ultsonch.2025.107703","DOIUrl":"10.1016/j.ultsonch.2025.107703","url":null,"abstract":"<div><div>The study investigated the synergistic effects of high ultrasound (HS) treatment and tannic acid (TA) conjugation on the structural and interfacial properties of myofibrillar protein (MP), and their roles in stabilizing high internal phase emulsions (HIPEs). Spectroscopic and interfacial analyses showed that HS promoted TA-induced covalent conjugation via exposure of reactive groups, driving conformational rearrangements and formation of more compact aggregates. At moderate TA concentrations, smaller particle size and enhanced interfacial performance were observed for MP–TA conjugates, as evidenced by accelerated adsorption kinetics and elevated dilatational moduli of interfacial films. In HIPEs, these changes yielded smaller and more uniform droplets, higher viscosity, larger linear viscoelastic regions, and greater yield stress. These improvements resulted in greater resistance to coalescence and oiling-off under storage, heating, and centrifugal stress. MP-based HIPEs with 10μM g<sup>−1</sup> TA and 240 W HS exhibited the most favorable balance of droplet architecture, rheology and stability. In addition, the optimized HIPEs displayed good printability in a preliminary 3D printing test, highlighting their potential for structuring food matrices. Overall, this work elucidates how HS-assisted TA conjugation alters MP conformation, interfacial assembly and emulsion rheology, providing a mechanistic basis for designing robust MP-stabilized HIPEs.</div></div>","PeriodicalId":442,"journal":{"name":"Ultrasonics Sonochemistry","volume":"124 ","pages":"Article 107703"},"PeriodicalIF":9.7,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145657563","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The machine learning assisted optimization of ultrasound-synergistic enzymatic extraction and comprehensive evaluation of polysaccharides from Saposhnikovia divaricata 三叶参多糖超声协同酶提工艺优化及综合评价

IF 9.7 1区化学 Q1 ACOUSTICS

Ultrasonics Sonochemistry

Pub Date : 2026-01-01 Epub Date: 2025-12-06 DOI: 10.1016/j.ultsonch.2025.107706

Zeyu Li , Qian Li , Chaogui Hu , Feng Yang , Fengxia Guo

Saposhnikovia divaricata (S. divaricata) is a common medicinal material with remarkable medicinal value, but there is limited research on its polysaccharides. This research employed ultrasound-synergistic enzymatic extraction to obtain polysaccharides, while leveraging response surface methodology (RSM) and support vector regression (SVR) models to optimize the extraction procedure. According to the SVR model, the optimal extraction conditions that led to a superior polysaccharide yield of 11.82 % included maintaining a solid-solvent ratio of 1:13 g/mL, conducting the process at an extraction temperature of 45 °C with 420 W of power, adjusting the pH to 4.5, extending the ultrasonic treatment to 35 min, and incorporating a 3 % enzyme dosage. Additionally, a comparative analysis of polysaccharides extracted through different methods assessed their physicochemical characteristics, structure, and antioxidant capacity. The entropy weight method was employed for a comprehensive evaluation of the different extraction techniques. In the final assessment, the ultrasound- synergistic enzymatic extraction emerged as the top-performing technique, achieving the highest composite score. Notably, the antioxidant efficacy was driven primarily by the levels of uronic acid, molecular weight and mannose. This research establishes the theoretical foundation and scientific rationale for the efficient extraction and bioactive application of S. divaricata polysaccharides (SDP).

菝葜（Saposhnikovia divaricata， S. divaricata）是一种具有显著药用价值的常见药材，但对其多糖的研究有限。本研究采用超声协同酶法提取多糖，并利用响应面法（RSM）和支持向量回归（SVR）模型对提取工艺进行优化。根据SVR模型，料液比为1:13 g/mL，提取温度为45℃，提取功率为420 W， pH为4.5，超声处理时间为35 min，酶投加量为3%，可使多糖得率达到11.82%。此外，通过不同方法提取的多糖进行比较分析，评估其物理化学特性，结构和抗氧化能力。采用熵权法对不同提取技术进行综合评价。在最后的评估中，超声-协同酶萃取成为表现最好的技术，获得了最高的综合得分。值得注意的是，抗氧化效果主要受糖醛酸、分子量和甘露糖含量的影响。本研究为高效提取和生物活性应用提供了理论基础和科学依据。

{"title":"The machine learning assisted optimization of ultrasound-synergistic enzymatic extraction and comprehensive evaluation of polysaccharides from Saposhnikovia divaricata","authors":"Zeyu Li , Qian Li , Chaogui Hu , Feng Yang , Fengxia Guo","doi":"10.1016/j.ultsonch.2025.107706","DOIUrl":"10.1016/j.ultsonch.2025.107706","url":null,"abstract":"<div><div><em>Saposhnikovia divaricata</em> (<em>S. divaricata</em>) is a common medicinal material with remarkable medicinal value, but there is limited research on its polysaccharides. This research employed ultrasound-synergistic enzymatic extraction to obtain polysaccharides, while leveraging response surface methodology (RSM) and support vector regression (SVR) models to optimize the extraction procedure. According to the SVR model, the optimal extraction conditions that led to a superior polysaccharide yield of 11.82 % included maintaining a solid-solvent ratio of 1:13 g/mL, conducting the process at an extraction temperature of 45 °C with 420 W of power, adjusting the pH to 4.5, extending the ultrasonic treatment to 35 min, and incorporating a 3 % enzyme dosage. Additionally, a comparative analysis of polysaccharides extracted through different methods assessed their physicochemical characteristics, structure, and antioxidant capacity. The entropy weight method was employed for a comprehensive evaluation of the different extraction techniques. In the final assessment, the ultrasound- synergistic enzymatic extraction emerged as the top-performing technique, achieving the highest composite score. Notably, the antioxidant efficacy was driven primarily by the levels of uronic acid, molecular weight and mannose. This research establishes the theoretical foundation and scientific rationale for the efficient extraction and bioactive application of <em>S. divaricata</em> polysaccharides (SDP).</div></div>","PeriodicalId":442,"journal":{"name":"Ultrasonics Sonochemistry","volume":"124 ","pages":"Article 107706"},"PeriodicalIF":9.7,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145689928","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mechanisms of oil droplet detachment by cavitation bubbles in ultrasonic cleaning 超声清洗中空化泡脱油机理研究。

IF 9.7 1区化学 Q1 ACOUSTICS

Ultrasonics Sonochemistry

Pub Date : 2026-01-01 Epub Date: 2025-12-16 DOI: 10.1016/j.ultsonch.2025.107726

Woongchan Shim , Ryeol Park , Jaedeok Seo , Wonjung Kim

Efficient removal of oily contaminants from solid surfaces remains a significant challenge in various engineering applications. While ultrasonic cleaning mechanisms for solid particles are well established, the detachment of oil droplets is less understood due to the distinct interfacial and viscous characteristics of oils. Here, we experimentally investigate oil droplet removal under ultrasonic excitation, focusing on the role of cavitation bubble dynamics. High-speed visualizations reveal that cleaning is initiated by bubble penetration into the droplet, followed by successive coalescence and growth of bubbles. This process progressively reduces the droplet–substrate contact area, ultimately resulting in detachment. We identify a critical acoustic pressure threshold above which bubble penetration becomes frequent and cleaning efficiency increases sharply. The results indicate that oil detachment is governed by microjets generated during bubble collapse, which must overcome interfacial resistance for successful penetration. These findings provide mechanistic insight into the ultrasonic removal of oil-based residues and offer practical guidance for enhancing cleaning performance through control of acoustic parameters.

在各种工程应用中，有效去除固体表面的油性污染物仍然是一个重大挑战。虽然固体颗粒的超声波清洗机制已经很好地建立，但由于油的独特界面和粘性特性，人们对油滴的分离知之甚少。本文通过实验研究了超声激励下的油滴去除，重点研究了空化气泡动力学的作用。高速可视化显示，清洁是由气泡渗透到液滴中开始的，随后是气泡的连续合并和生长。这一过程逐渐减少液滴与衬底的接触面积，最终导致剥离。我们确定了一个临界声压阈值，超过这个阈值，气泡渗透变得频繁，清洗效率急剧提高。结果表明，油的脱离受气泡破裂过程中产生的微射流控制，微射流必须克服界面阻力才能成功渗透。这些发现为超声波去除油基残留物提供了机理见解，并为通过控制声学参数来提高清洗性能提供了实践指导。

{"title":"Mechanisms of oil droplet detachment by cavitation bubbles in ultrasonic cleaning","authors":"Woongchan Shim , Ryeol Park , Jaedeok Seo , Wonjung Kim","doi":"10.1016/j.ultsonch.2025.107726","DOIUrl":"10.1016/j.ultsonch.2025.107726","url":null,"abstract":"<div><div>Efficient removal of oily contaminants from solid surfaces remains a significant challenge in various engineering applications. While ultrasonic cleaning mechanisms for solid particles are well established, the detachment of oil droplets is less understood due to the distinct interfacial and viscous characteristics of oils. Here, we experimentally investigate oil droplet removal under ultrasonic excitation, focusing on the role of cavitation bubble dynamics. High-speed visualizations reveal that cleaning is initiated by bubble penetration into the droplet, followed by successive coalescence and growth of bubbles. This process progressively reduces the droplet–substrate contact area, ultimately resulting in detachment. We identify a critical acoustic pressure threshold above which bubble penetration becomes frequent and cleaning efficiency increases sharply. The results indicate that oil detachment is governed by microjets generated during bubble collapse, which must overcome interfacial resistance for successful penetration. These findings provide mechanistic insight into the ultrasonic removal of oil-based residues and offer practical guidance for enhancing cleaning performance through control of acoustic parameters.</div></div>","PeriodicalId":442,"journal":{"name":"Ultrasonics Sonochemistry","volume":"124 ","pages":"Article 107726"},"PeriodicalIF":9.7,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145792690","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Ultrasound and microwave assisted extraction of bioactives from food wastes: An overview on their comparative analysis towards commercialization 超声波和微波辅助提取食物垃圾中生物活性物质：商业化的比较分析综述

IF 9.7 1区化学 Q1 ACOUSTICS

Ultrasonics Sonochemistry

Pub Date : 2026-01-01 Epub Date: 2025-12-11 DOI: 10.1016/j.ultsonch.2025.107712

Arunima Nayak , Astha Shah , Sonali Bhatt , Brij Bhushan , Anuj Kumar , Rama Gaur , Inderjeet Tyagi

Valorizing food waste to functional bioactives is a robust research area. Sustainability, cost effectiveness, enhanced productivity of the bio-extracts and finally on the industrial readiness have been the driving force for research towards non-thermal extractions, novel solvents, process optimization, dual technological adoption and lately on the use of Artificial Intelligence (AI)/Machine Learning (ML). Ultrasound assisted extraction (UAE) and Microwave assisted extraction (MAE) stand apart in the context of cost-effectiveness and hold tremendous potential to be scaled-up despite the identified challenges.

Thus, with the focus on technological merit, scalability challenges, advancements, quality assessment, the present review has made an elaborate performance assessment for bioactive recovery with respect to productivity, green solvents as well as on environment and energy impact. Finally, research and development on AI tools in quality process control, optimization and real-time monitoring and combined use of UAE + MAE in addressing technological flaws, boosting quality, productivity show positive aspects towards commercialization.

将食物垃圾转化为功能性生物活性物质是一个活跃的研究领域。生物提取物的可持续性、成本效益、提高生产率以及最终的工业准备程度一直是研究非热提取、新型溶剂、工艺优化、双重技术采用以及最近使用人工智能(AI)/机器学习（ML）的推动力。超声辅助提取（UAE）和微波辅助提取（MAE）在成本效益的背景下脱颖而出，尽管存在确定的挑战，但仍具有扩大规模的巨大潜力。因此，随着技术优点，可扩展性挑战，进展，质量评估的重点，本综述从生产力，绿色溶剂以及环境和能源影响方面对生物活性回收进行了详细的性能评估。最后，在质量过程控制、优化和实时监控方面的人工智能工具的研发，以及阿联酋和MAE在解决技术缺陷、提高质量和生产力方面的联合使用，都显示出商业化的积极方面。

{"title":"Ultrasound and microwave assisted extraction of bioactives from food wastes: An overview on their comparative analysis towards commercialization","authors":"Arunima Nayak , Astha Shah , Sonali Bhatt , Brij Bhushan , Anuj Kumar , Rama Gaur , Inderjeet Tyagi","doi":"10.1016/j.ultsonch.2025.107712","DOIUrl":"10.1016/j.ultsonch.2025.107712","url":null,"abstract":"<div><div>Valorizing food waste to functional bioactives is a robust research area. Sustainability, cost effectiveness, enhanced productivity of the bio-extracts and finally on the industrial readiness have been the driving force for research towards non-thermal extractions, novel solvents, process optimization, dual technological adoption and lately on the use of Artificial Intelligence (AI)/Machine Learning (ML). Ultrasound assisted extraction (UAE) and Microwave assisted extraction (MAE) stand apart in the context of cost-effectiveness and hold tremendous potential to be scaled-up despite the identified challenges.</div><div>Thus, with the focus on technological merit, scalability challenges, advancements, quality assessment, the present review has made an elaborate performance assessment for bioactive recovery with respect to productivity, green solvents as well as on environment and energy impact. Finally, research and development on AI tools in quality process control, optimization and real-time monitoring and combined use of UAE + MAE in addressing technological flaws, boosting quality, productivity show positive aspects towards commercialization.</div></div>","PeriodicalId":442,"journal":{"name":"Ultrasonics Sonochemistry","volume":"124 ","pages":"Article 107712"},"PeriodicalIF":9.7,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145731834","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Radial oscillation of an encapsulated bubble near a planar rigid wall under dual-frequency acoustic excitation in viscoelastic fluids 粘弹性流体中双频声激励下平面刚性壁面附近封装气泡的径向振荡

IF 9.7 1区化学 Q1 ACOUSTICS

Ultrasonics Sonochemistry

Pub Date : 2026-01-01 Epub Date: 2025-12-09 DOI: 10.1016/j.ultsonch.2025.107714

Yu-Chen Zang , Di-Chao Chen , Xing-Feng Zhu , Da-Jian Wu , Wei-Jun Lin

Microbubbles play an important role in acoustic cavitation, power ultrasonics, and biomedical diagnosis and therapy. However, the influence of surrounding boundary conditions on the dynamic behaviors of an encapsulated bubble requires more in depth analysis and understanding. This study investigates the dynamic response of a lipid-coated bubble near a planar rigid wall in a viscoelastic fluid, which is transformed into a two-bubble model using the method of images. Assuming the excitation of a dual-frequency wave, the dynamic equation governing the radial oscillation is derived through combining the Rayleigh-Plesset model, the Marmottant model, and the Kelvin-Voigt model. Numerical computations are also performed for the instantaneous bubble radius in the time domain and the spectral amplitude in the frequency domain. Particular attention is paid to the pressure amplitude, the excited frequencies, the bubble-wall distance, the initial bubble radius as well as the elastic modulus and surface dilatational viscosity of the coating layer. The spectral peaks include the fundamental and higher-order resonance frequencies, accompanied by the sum frequency due to interaction between dual frequencies. The planar rigid wall significantly weakens the radial oscillation through suppressing the higher-order peaks in the frequency domain. The beating phenomenon occurs at two close frequencies with the oscillation amplitude changing periodically at the difference frequency. A longer bubble-wall distance corresponds to a weaker suppression effect of the bubble-wall interaction and thus enhances the radial oscillation. The maximum oscillation amplitude is achieved at the resonance radius but not necessarily the resonance elastic modulus of the coating layer. The findings may advantage in the design and optimization of microbubble-based systems across a wide range of applications such as ultrasonic cavitation and biomedical ultrasound.

微泡在声空化、功率超声、生物医学诊断和治疗中发挥着重要作用。但是，周围边界条件对封装气泡动力学行为的影响还需要进一步深入的分析和认识。本文研究了粘弹性流体中靠近平面刚性壁面的脂质包被气泡的动力学响应，并利用图像法将其转化为双气泡模型。以双频波为激励，结合Rayleigh-Plesset模型、Marmottant模型和Kelvin-Voigt模型，推导了控制径向振荡的动力学方程。对瞬时气泡半径在时域和频谱幅值在频域进行了数值计算。特别注意的是压力幅值、激励频率、气泡壁距离、初始气泡半径以及涂层的弹性模量和表面膨胀粘度。谱峰包括基频和高阶共振频率，伴随着双频相互作用的和频。平面刚性壁通过抑制频域的高阶峰，显著地减弱了径向振荡。振荡现象发生在两个接近的频率上，振荡幅度在差频处周期性变化。气泡壁距离越长，气泡壁相互作用的抑制作用越弱，从而增强了径向振荡。最大振荡幅度在共振半径处实现，但不一定在涂层的共振弹性模量处实现。这些发现可能有助于设计和优化基于微泡的系统，用于超声波空化和生物医学超声等广泛应用。

{"title":"Radial oscillation of an encapsulated bubble near a planar rigid wall under dual-frequency acoustic excitation in viscoelastic fluids","authors":"Yu-Chen Zang , Di-Chao Chen , Xing-Feng Zhu , Da-Jian Wu , Wei-Jun Lin","doi":"10.1016/j.ultsonch.2025.107714","DOIUrl":"10.1016/j.ultsonch.2025.107714","url":null,"abstract":"<div><div>Microbubbles play an important role in acoustic cavitation, power ultrasonics, and biomedical diagnosis and therapy. However, the influence of surrounding boundary conditions on the dynamic behaviors of an encapsulated bubble requires more in depth analysis and understanding. This study investigates the dynamic response of a lipid-coated bubble near a planar rigid wall in a viscoelastic fluid, which is transformed into a two-bubble model using the method of images. Assuming the excitation of a dual-frequency wave, the dynamic equation governing the radial oscillation is derived through combining the Rayleigh-Plesset model, the Marmottant model, and the Kelvin-Voigt model. Numerical computations are also performed for the instantaneous bubble radius in the time domain and the spectral amplitude in the frequency domain. Particular attention is paid to the pressure amplitude, the excited frequencies, the bubble-wall distance, the initial bubble radius as well as the elastic modulus and surface dilatational viscosity of the coating layer. The spectral peaks include the fundamental and higher-order resonance frequencies, accompanied by the sum frequency due to interaction between dual frequencies. The planar rigid wall significantly weakens the radial oscillation through suppressing the higher-order peaks in the frequency domain. The beating phenomenon occurs at two close frequencies with the oscillation amplitude changing periodically at the difference frequency. A longer bubble-wall distance corresponds to a weaker suppression effect of the bubble-wall interaction and thus enhances the radial oscillation. The maximum oscillation amplitude is achieved at the resonance radius but not necessarily the resonance elastic modulus of the coating layer. The findings may advantage in the design and optimization of microbubble-based systems across a wide range of applications such as ultrasonic cavitation and biomedical ultrasound.</div></div>","PeriodicalId":442,"journal":{"name":"Ultrasonics Sonochemistry","volume":"124 ","pages":"Article 107714"},"PeriodicalIF":9.7,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145731965","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Ultrasound-Assisted alkaline hydrolysis of feather keratin using a cup horn sonoreactor 超声辅助杯角声反应器对羽毛角蛋白的碱性水解研究

IF 9.7 1区化学 Q1 ACOUSTICS

Ultrasonics Sonochemistry

Pub Date : 2026-01-01 Epub Date: 2025-12-28 DOI: 10.1016/j.ultsonch.2025.107733

Nidal Del Valle Raydan , Antoine Loquet , Birgit Habenstein , Brice Kauffmann , Gregory Chatel , Eduardo Robles

This study explores the potential of ultrasound-assisted alkaline hydrolysis, employing a cup horn sonoreactor, for the sustainable extraction of keratin from duck feather waste. Unprecedented in its approach, this research evaluates the system’s efficacy in maintaining the structural integrity of cystine—a crucial amino acid—through controlled hydrolysis processes, or promoting disulfide bond rupture and regeneration upon precipitation. By using the unique advantages of the cup horn system, including homogeneous energy distribution and gentle processing, this investigation aims to overcome the limitations of hydrothermal treatments. The obtained keratins were analyzed using advanced spectroscopic, microscopic, and thermal analysis techniques (ATR-IR, Raman, SDS-PAGE, SEM, 13C CP-MAS NMR, XRD, and TGA). These analyses allowed the unveiling of the reaction pathways and structural changes in keratin under various temperatures in alkaline conditions. Lower temperatures (35 °C) favored the preservation of native disulfide linkages, while higher temperatures (75 °C) enhanced disulfide bond rupture and reformation. An intermediate temperature (55–65 °C) offered a balance between structural integrity and yield. This innovative method represents a significant advancement in feather waste valorization, providing a scalable and adaptable platform to tailor keratin properties such as yield, thermal stability, or disulfide bond regeneration, according to specific application needs.

本研究探索了超声辅助碱性水解的潜力，采用杯角声反应器，从鸭羽废物中可持续提取角蛋白。这项史无前例的研究评估了该系统通过控制水解过程来维持胱氨酸（一种至关重要的氨基酸）结构完整性的功效，或在沉淀时促进二硫键断裂和再生。利用杯角系统的独特优势，包括均匀的能量分布和温和的处理，本研究旨在克服水热处理的局限性。用先进的光谱、显微镜和热分析技术（ATR-IR、拉曼、SDS-PAGE、SEM、13C CP-MAS NMR、XRD和TGA）分析得到的角蛋白。这些分析揭示了在碱性条件下不同温度下角蛋白的反应途径和结构变化。较低温度（35°C）有利于保存天然二硫键，而较高温度（75°C）促进二硫键断裂和重组。中间温度（55-65°C）在结构完整性和产量之间取得了平衡。这种创新的方法代表了羽毛废物增值方面的重大进步，提供了一个可扩展和适应性强的平台，可以根据特定的应用需求定制角蛋白特性，如产率、热稳定性或二硫键再生。

{"title":"Ultrasound-Assisted alkaline hydrolysis of feather keratin using a cup horn sonoreactor","authors":"Nidal Del Valle Raydan , Antoine Loquet , Birgit Habenstein , Brice Kauffmann , Gregory Chatel , Eduardo Robles","doi":"10.1016/j.ultsonch.2025.107733","DOIUrl":"10.1016/j.ultsonch.2025.107733","url":null,"abstract":"<div><div>This study explores the potential of ultrasound-assisted alkaline hydrolysis, employing a cup horn sonoreactor, for the sustainable extraction of keratin from duck feather waste. Unprecedented in its approach, this research evaluates the system’s efficacy in maintaining the structural integrity of cystine—a crucial amino acid—through controlled hydrolysis processes, or promoting disulfide bond rupture and regeneration upon precipitation. By using the unique advantages of the cup horn system, including homogeneous energy distribution and gentle processing, this investigation aims to overcome the limitations of hydrothermal treatments. The obtained keratins were analyzed using advanced spectroscopic, microscopic, and thermal analysis techniques (ATR-IR, Raman, SDS-PAGE, SEM, 13C CP-MAS NMR, XRD, and TGA). These analyses allowed the unveiling of the reaction pathways and structural changes in keratin under various temperatures in alkaline conditions. Lower temperatures (35 °C) favored the preservation of native disulfide linkages, while higher temperatures (75 °C) enhanced disulfide bond rupture and reformation. An intermediate temperature (55–65 °C) offered a balance between structural integrity and yield. This innovative method represents a significant advancement in feather waste valorization, providing a scalable and adaptable platform to tailor keratin properties such as yield, thermal stability, or disulfide bond regeneration, according to specific application needs.</div></div>","PeriodicalId":442,"journal":{"name":"Ultrasonics Sonochemistry","volume":"124 ","pages":"Article 107733"},"PeriodicalIF":9.7,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145844699","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mechanism of deep removal of iron impurities from zinc sulfate solutions via ultrasonic-enhanced goethite process 超声强化针铁矿法深度去除硫酸锌溶液中铁杂质的机理

IF 9.7 1区化学 Q1 ACOUSTICS

Ultrasonics Sonochemistry

Pub Date : 2026-01-01 Epub Date: 2025-12-07 DOI: 10.1016/j.ultsonch.2025.107708

Heng Zhang , Shuxuan Hu , Shixing Wang , Rong Zhu , Yadong Li , Libo Zhang

This study reports an ultrasound-enhanced goethite process for deep removal of iron impurities from a zinc sulfate solution. This method eliminates the reliance on external seed crystals by using the ultrasonic cavitation effect to directly induce the formation of α-iron(III) oxide–hydroxide (a-FeOOH). Single-factor experiments were conducted to optimize process parameters. The Fe removal efficiency reached 99.72 % under optimal conditions: ultrasonic power = 160 W, pH = 3.0, reaction time = 80 min, and hydrogen peroxide (H₂O₂) dosage = 12 mL. The resulting goethite slag exhibited an iron content of 30.72 % and a moisture content of 39.21 %, showing a 3.92 % increase in the iron content and an 11.05 % decrease in the moisture content compared with the traditional process. Multiscale characterization and density functional theory (DFT) calculations were used to explore the mechanism. DFT calculations confirmed that α-FeOOH formed bidentate [adsorption energy (ΔE) = − 6.161] and monodentate (ΔE = − 3.223) ligand adsorption configurations with SO₄²⁻ under conventional and ultrasonic conditions. The monodentate configuration exhibited low thermodynamic stability and was highly prone to desorption, facilitating goethite formation. Electron paramagnetic resonance analysis revealed that ultrasound promoted the cleavage of H₂O₂ to generate abundant ·OH radicals, accelerating the oxidation kinetics of Fe²⁺. Furthermore, ultrasound disrupted iron hydroxide [Fe(OH)₃] colloidal encapsulation, inhibited byproduct formation, and guided the directional hydrolysis of Fe³⁺ into highly crystalline goethite. This technology provided a theoretical foundation and technical support for achieving efficient and clean iron removal in hydrometallurgical zinc smelting processes.

本研究报告了一种超声增强针铁矿工艺，用于深度去除硫酸锌溶液中的铁杂质。该方法利用超声空化效应直接诱导α-铁（III）氧化物氢氧化物（a-FeOOH）的形成，消除了对外界种子晶体的依赖。通过单因素实验对工艺参数进行优化。在超声功率为160 W、pH = 3.0、反应时间为80 min、过氧化氢（H2O2）用量为12 mL的条件下，铁的去除率达到99.72%，所得针铁矿渣的铁含量为30.72%，水含量为39.21%，比传统工艺提高了3.92%，水含量降低了11.05%。采用多尺度表征和密度泛函理论（DFT）计算来探讨其机理。DFT计算证实，在常规和超声条件下，α-FeOOH与SO42−形成双齿[吸附能（ΔE） =−6.161]和单齿（ΔE =−3.223）配体吸附构型。单齿结构具有较低的热力学稳定性，且极易解吸，有利于针铁矿的形成。电子顺磁共振分析表明，超声促进H2O2的裂解生成丰富的·OH自由基，加速了Fe2+的氧化动力学。超声破坏氢氧化铁[Fe(OH)3]的胶体包封，抑制副产物的生成，引导Fe3+定向水解成高结晶针铁矿。该技术为实现湿法炼锌过程高效、清洁除铁提供了理论基础和技术支持。

{"title":"Mechanism of deep removal of iron impurities from zinc sulfate solutions via ultrasonic-enhanced goethite process","authors":"Heng Zhang , Shuxuan Hu , Shixing Wang , Rong Zhu , Yadong Li , Libo Zhang","doi":"10.1016/j.ultsonch.2025.107708","DOIUrl":"10.1016/j.ultsonch.2025.107708","url":null,"abstract":"<div><div>This study reports an ultrasound-enhanced goethite process for deep removal of iron impurities from a zinc sulfate solution. This method eliminates the reliance on external seed crystals by using the ultrasonic cavitation effect to directly induce the formation of α-iron(III) oxide–hydroxide (a-FeOOH). Single-factor experiments were conducted to optimize process parameters. The Fe removal efficiency reached 99.72 % under optimal conditions: ultrasonic power = 160 W, pH = 3.0, reaction time = 80 min, and hydrogen peroxide (H<sub>2</sub>O<sub>2</sub>) dosage = 12 mL. The resulting goethite slag exhibited an iron content of 30.72 % and a moisture content of 39.21 %, showing a 3.92 % increase in the iron content and an 11.05 % decrease in the moisture content compared with the traditional process. Multiscale characterization and density functional theory (DFT) calculations were used to explore the mechanism. DFT calculations confirmed that α-FeOOH formed bidentate [adsorption energy (ΔE) = − 6.161] and monodentate (ΔE = − 3.223) ligand adsorption configurations with SO<sub>4</sub><sup>2−</sup> under conventional and ultrasonic conditions. The monodentate configuration exhibited low thermodynamic stability and was highly prone to desorption, facilitating goethite formation. Electron paramagnetic resonance analysis revealed that ultrasound promoted the cleavage of H<sub>2</sub>O<sub>2</sub> to generate abundant ·OH radicals, accelerating the oxidation kinetics of Fe<sup>2+</sup>. Furthermore, ultrasound disrupted iron hydroxide [Fe(OH)<sub>3</sub>] colloidal encapsulation, inhibited byproduct formation, and guided the directional hydrolysis of Fe<sup>3+</sup> into highly crystalline goethite. This technology provided a theoretical foundation and technical support for achieving efficient and clean iron removal in hydrometallurgical zinc smelting processes.</div></div>","PeriodicalId":442,"journal":{"name":"Ultrasonics Sonochemistry","volume":"124 ","pages":"Article 107708"},"PeriodicalIF":9.7,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145689924","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0