Applied Clay Science最新文献

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Salinity-dependent ultimate shear strength of compacted Wyoming-type bentonite investigated by triaxial tests 通过三轴试验研究压实怀俄明型膨润土随盐度变化的极限剪切强度
IF 5.3 2区 地球科学
Applied Clay Science Pub Date : 2024-09-24 DOI: 10.1016/j.clay.2024.107576
Jinwoo Kim , Sirpa Kumpulainen , Alessio Ferrari , Xavier Pintado , Lyesse Laloui , Ville Heino
{"title":"Salinity-dependent ultimate shear strength of compacted Wyoming-type bentonite investigated by triaxial tests","authors":"Jinwoo Kim ,&nbsp;Sirpa Kumpulainen ,&nbsp;Alessio Ferrari ,&nbsp;Xavier Pintado ,&nbsp;Lyesse Laloui ,&nbsp;Ville Heino","doi":"10.1016/j.clay.2024.107576","DOIUrl":"10.1016/j.clay.2024.107576","url":null,"abstract":"<div><div>Ion composition in groundwater at the spent nuclear fuel repositories is a relevant uncertainty for predicting the shear behavior of the bentonite buffer. However, only a few studies investigated the range of shear strength variation with in-situ groundwater conditions. This paper examines the ultimate shear strength of compacted Wyoming-type bentonite, focusing on the effect of pore water salinity. Triaxial tests were performed under effective confining pressures up to 10 MPa with different types of pore water representing: 1) extremely low, 2) current, and 3) maximal salinity conditions at the repositories, while tracking the evolution of exchangeable cation composition. The results revealed that pore waters with typical Ca<sup>2+</sup> concentrations at the repositories strengthen the sodium bentonite through Na<sup>+</sup>-Ca<sup>2+</sup> cation exchange. The observed salinity-dependent strength of the bentonite was described by the ultimate shear strength line and its apparent mobilization in the deviatoric stress-mean effective stress plane. The upper limit of the increase in strength was found to be 0.74 MPa. Previous triaxial test results with deionized water were compared to refine the shape of the ultimate shear strength line. Lessons learned from the triaxial testing of saturated bentonite were elucidated to offer recommendations to address the challenges associated with high swelling potential and low permeability. The findings in this paper have implications for accurate assessment of shear behavior in the deep geological disposal system as well as effective laboratory measurements of the shear strength parameters of compacted bentonite.</div></div>","PeriodicalId":245,"journal":{"name":"Applied Clay Science","volume":"261 ","pages":"Article 107576"},"PeriodicalIF":5.3,"publicationDate":"2024-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0169131724003247/pdfft?md5=2bf03e6a400898c1e1dbd88d3f60c702&pid=1-s2.0-S0169131724003247-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142311203","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Different hydrophilic bilayer membranes for efficient osmotic energy harvesting with high-concentration exfoliation 通过高浓度剥离实现高效渗透能量采集的不同亲水双层膜
IF 5.3 2区 地球科学
Applied Clay Science Pub Date : 2024-09-20 DOI: 10.1016/j.clay.2024.107577
Tiancheng Gu , Junjie Xu , Fengdan Zhu , Zhengmao Ding , Yunjun Luo
{"title":"Different hydrophilic bilayer membranes for efficient osmotic energy harvesting with high-concentration exfoliation","authors":"Tiancheng Gu ,&nbsp;Junjie Xu ,&nbsp;Fengdan Zhu ,&nbsp;Zhengmao Ding ,&nbsp;Yunjun Luo","doi":"10.1016/j.clay.2024.107577","DOIUrl":"10.1016/j.clay.2024.107577","url":null,"abstract":"<div><div>Sustainable, clean, seawater-river interface osmotic energy shows great potential in replacing traditional fossil fuel sources. Two-dimensional (2D) nanofluidic channels, known for their high throughput, high integration density, and excellent scalability, render practical applications feasible for osmotic energy harvesting. However, 2D nanofluidic channels face challenges such as high internal resistance and high costs, which keep the ultimate goal of large-scale osmotic energy harvesting distant. Herein, a novel method to regulate ion transport resistance by constructing different hydrophilic asymmetric nanofluidic channels using bilayer membrane of vermiculite and MXene is proposed. Vermiculite nanosheets are prepared via polymer-assisted exfoliation method utilizing polyethyl-phosphate glycol ester. After simple stirring and maturation process, the exfoliation concentration can reach 20 phr within 8 h, which is 20 times higher than the previously reported maximum. The internal resistance of the bilayer membrane decreased from 24.1 kΩ to 15.0 kΩ as the direction of ions transport changes. Oxygen plasma assistance enabled the bilayer membrane to reach a maximum power density of 4.66 W m<sup>−2</sup>. The high-efficiency preparation method of vermiculite nanosheets and the emphasis on membrane surface properties offer new insights into practical osmotic energy harvesting.</div></div>","PeriodicalId":245,"journal":{"name":"Applied Clay Science","volume":"261 ","pages":"Article 107577"},"PeriodicalIF":5.3,"publicationDate":"2024-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142311205","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Green fabrication of poly (butylene succinate)/halloysite nanotube open-cell foams with ultra-high foaming and adsorption performance 绿色制造具有超高发泡和吸附性能的聚(丁二酸丁二醇酯)/海泡石纳米管开孔泡沫
IF 5.3 2区 地球科学
Applied Clay Science Pub Date : 2024-09-20 DOI: 10.1016/j.clay.2024.107578
Xin He , Meng Zhang , Min Zhu , Hongfu Zhou , Xiangdong Wang , Ning Chen
{"title":"Green fabrication of poly (butylene succinate)/halloysite nanotube open-cell foams with ultra-high foaming and adsorption performance","authors":"Xin He ,&nbsp;Meng Zhang ,&nbsp;Min Zhu ,&nbsp;Hongfu Zhou ,&nbsp;Xiangdong Wang ,&nbsp;Ning Chen","doi":"10.1016/j.clay.2024.107578","DOIUrl":"10.1016/j.clay.2024.107578","url":null,"abstract":"<div><div>Ecological balance and human health have been greatly impacted by the environmental effects of oil spill pollution. In order to prepare an environmentally friendly, efficient, potential promising adsorbent for coping with the oil spill pollution, herein, biodegradable poly (butylene succinate) (PBS) open-cell foams were prepared by supercritical CO<sub>2</sub> foaming in the presence of a chain extender and tubular halloysite nanotube (Hal). The unique open-cell structure of PBS foams and the special functional groups on the surface of Hal enabled branched PBS (BPBS)/Hal open-cell foam to efficiently remove oil contaminants and keep excellent mechanical properties. The torque curve and Fourier transformation infrared spectra results showed that the chain extension modification of PBS was successful after adding CE. Meanwhile, the rheological properties and crystallization behaviors of all PBS samples were analyzed by rheometer, differential scanning calorimetry, polarized optical microscopy. It was found that the storage modulus and crystallinity of PBS samples were improved with the increase of Hal content. The obtained BPBS with 0.75 phr of Hal (BPBS/Hal3) open-cell foam exhibited the highest volume expansion ratio (64 times) and adsorption capacities up to 47 g/g carbon tetrachloride (CCl<sub>4</sub>) among all the prepared foams. Furthermore, Hal addition enhanced the mechanical properties of BPBS/Hal open-cell foams, resulting in a specific compressive strength increase of 608.4 %. Moreover, BPBS/Hal3 open-cell foam continued to achieve an adsorption capacity of 46 g/g CCl<sub>4</sub> (97.8 % of the initial value) after 10 adsorption cycles. This study not only presents a green and straightforward approach for preparing high-porosity biodegradable polymer open-cell foams but also offers a potentially promising solution for maintaining a green and low-carbon ecological environment without oil spill pollution.</div></div>","PeriodicalId":245,"journal":{"name":"Applied Clay Science","volume":"261 ","pages":"Article 107578"},"PeriodicalIF":5.3,"publicationDate":"2024-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142311204","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
High-value application of kaolin by wet mixing method in low heat generation and high wear-resistant natural rubber composites 湿法混合高岭土在低发热、高耐磨天然橡胶复合材料中的高价值应用
IF 5.3 2区 地球科学
Applied Clay Science Pub Date : 2024-09-17 DOI: 10.1016/j.clay.2024.107574
Yao Xiao , Biao Li , Yinggang Huang , Zheng Gong , Pengfei Diao , Chuansheng Wang , Huiguang Bian
{"title":"High-value application of kaolin by wet mixing method in low heat generation and high wear-resistant natural rubber composites","authors":"Yao Xiao ,&nbsp;Biao Li ,&nbsp;Yinggang Huang ,&nbsp;Zheng Gong ,&nbsp;Pengfei Diao ,&nbsp;Chuansheng Wang ,&nbsp;Huiguang Bian","doi":"10.1016/j.clay.2024.107574","DOIUrl":"10.1016/j.clay.2024.107574","url":null,"abstract":"<div><p>In this study, a silane coupling agent and kaolin, a natural mineral resource, were introduced into the wet mixing process of natural rubber latex, the high wear-resistant and low-generation heat natural rubber composites were prepared. The sputtering, collision, and deposition of coupling agent/fillers/natural rubber latex mixed emulsion onto the roller effectively could break up the filler aggregates, enable fillers to be better infiltrated, distributed, and dispersed in the rubber. The effects of dry/wet mixing processes and the ratio of kaolin to silica on the crosslinking density, filler dispersion, extrusion rheological properties, gas barrier properties, dynamic mechanical properties and thermal stability of NR composites were investigated, and the silanization mechanism was summarized by FTIR and XRD. The experimental results showed that kaolin improved the crosslinking density and failure temperature, reduced the Payne effect, extrusion swell, and rolling resistance. Compared with 60 phr silica-filled natural rubber, the gas barrier property and wear resistance of 60 phr kaolin-filled natural rubber were improved by 64 % and 27 %, respectively, and the rolling resistance was reduced by 57 %. When the ratios of silica to kaolin were both 20:40, the crosslinking density, gas barrier property, and wear resistance of wet mixing were improved by 24 %, 45 %, and 9 %, respectively, compared with dry mixing. This study provided a new method for the high-value application of kaolin in wet mixing and green tires.</p></div>","PeriodicalId":245,"journal":{"name":"Applied Clay Science","volume":"261 ","pages":"Article 107574"},"PeriodicalIF":5.3,"publicationDate":"2024-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142240371","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Interparticle friction behaviors of kaolinite: Insights into macroscale friction from nanoscale 高岭石的颗粒间摩擦行为:从纳米尺度洞察宏观摩擦力
IF 5.3 2区 地球科学
Applied Clay Science Pub Date : 2024-09-14 DOI: 10.1016/j.clay.2024.107571
Li-Lan Zhang , Yuan-Yuan Zheng , Zhen-Yu Yin , Ali Zaoui
{"title":"Interparticle friction behaviors of kaolinite: Insights into macroscale friction from nanoscale","authors":"Li-Lan Zhang ,&nbsp;Yuan-Yuan Zheng ,&nbsp;Zhen-Yu Yin ,&nbsp;Ali Zaoui","doi":"10.1016/j.clay.2024.107571","DOIUrl":"10.1016/j.clay.2024.107571","url":null,"abstract":"<div><p>The friction behavior of widespread clay minerals is a major concern in many geo-engineering problems, such as the stability of soft soil foundations and the induction of seismic fault zones. The present work aimed to study the friction behaviors of kaolinite at the particle level using the molecular dynamics method. The effects of normal force (<em>F</em><sub>n</sub>), shear velocity (<em>v</em>), and interfacial water film on nanofriction were discussed. The “stick-slip” phenomenon and periodic evolution of friction forces (<em>F</em><sub>f</sub>) were observed in dry friction and became less pronounced with water lubrication. The dry <em>F</em><sub>f</sub> of kaolinite was found to be insensitive to <em>F</em><sub>n</sub>. However, wet <em>F</em><sub>f</sub> exhibited a linear increase with <em>F</em><sub>n</sub> and then transitioned to a non-linear relationship as slip displacement increases due to the continuous loss of water molecules from the interface during friction. Notably, at high loads (<em>F</em><sub>n</sub> ≥ 30 nN), the peak friction of wet kaolinite showed characteristics similar to dry friction. A velocity-strengthening behavior of kaolinite at high velocities was observed in both dry and wet conditions. The macroscale friction coefficients of kaolinite were predicted from nanofriction data and results showed good agreement with experimental values. This study lays the foundation for bridging micro- and macro-mechanical behaviors, suggesting a new pathway for acquiring precise macroscopic friction of minerals through cross-scale studies.</p></div>","PeriodicalId":245,"journal":{"name":"Applied Clay Science","volume":"261 ","pages":"Article 107571"},"PeriodicalIF":5.3,"publicationDate":"2024-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142232112","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Cytotoxicity and genotoxic impacts of LAPONITE® on murine adipose stem cells LAPONITE® 对小鼠脂肪干细胞的细胞毒性和遗传毒性影响
IF 5.3 2区 地球科学
Applied Clay Science Pub Date : 2024-09-14 DOI: 10.1016/j.clay.2024.107572
Francisca L.A. Cardoso , Letícya L.S. Soares , Danielle B.A. Silva , Napoleão M. Argôlo Neto , Edson C. Silva Filho , Adalberto S. Silva , Dayseanny O. Bezerra , Maria S.P. Cruz , Felipe C. Nunes , Wanderson G.G. Melo , João M.C. Sousa , Antonielly C. Reis , Maria A.M. Carvalho
{"title":"Cytotoxicity and genotoxic impacts of LAPONITE® on murine adipose stem cells","authors":"Francisca L.A. Cardoso ,&nbsp;Letícya L.S. Soares ,&nbsp;Danielle B.A. Silva ,&nbsp;Napoleão M. Argôlo Neto ,&nbsp;Edson C. Silva Filho ,&nbsp;Adalberto S. Silva ,&nbsp;Dayseanny O. Bezerra ,&nbsp;Maria S.P. Cruz ,&nbsp;Felipe C. Nunes ,&nbsp;Wanderson G.G. Melo ,&nbsp;João M.C. Sousa ,&nbsp;Antonielly C. Reis ,&nbsp;Maria A.M. Carvalho","doi":"10.1016/j.clay.2024.107572","DOIUrl":"10.1016/j.clay.2024.107572","url":null,"abstract":"<div><p>This study comprehensively characterized LAPONITE® and evaluated its cytotoxic and genotoxic effects on rat adipose-derived stem cells (ADSCs). Chemical analyses included Fourier transform infrared spectroscopy, thermogravimetric analysis, X-ray diffraction, and scanning electron microscopy. Cytotoxic screening using the <em>Artemia salina</em> lethality test indicated low toxicity. ADSCs exhibited mesenchymal stem cell chracteristics. LAPONITE® demonstrated osteogenic induction capability. MTT assays revealed increased cell viability across concentrations and exposure times. The comet assay for genotoxicity showed no significant differences in damage index between experimental groups, except for a distinction in the frequency of damage between LAPONITE® concentrations at the longest exposure time. This comprehensive assessment provides valuable insights into the safety and potential applications of LAPONITE® in regenerative medicine.</p></div>","PeriodicalId":245,"journal":{"name":"Applied Clay Science","volume":"261 ","pages":"Article 107572"},"PeriodicalIF":5.3,"publicationDate":"2024-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142229985","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Applications of halloysite in separators for secondary batteries 埃洛石在二次电池隔膜中的应用
IF 5.3 2区 地球科学
Applied Clay Science Pub Date : 2024-09-14 DOI: 10.1016/j.clay.2024.107570
Jongyoung Choi , Inseo Ko , Seoyoung Ha , Sung Cik Mun , Jong Ho Won
{"title":"Applications of halloysite in separators for secondary batteries","authors":"Jongyoung Choi ,&nbsp;Inseo Ko ,&nbsp;Seoyoung Ha ,&nbsp;Sung Cik Mun ,&nbsp;Jong Ho Won","doi":"10.1016/j.clay.2024.107570","DOIUrl":"10.1016/j.clay.2024.107570","url":null,"abstract":"<div><p>Secondary batteries have received extensive attention due to the increasing demand for electric vehicles, portable electronics, and energy storage systems. A separator, a critical component of a battery, prevents short circuits by physically blocking the anode and cathode while allowing ion transport for electrochemical reactions. Although often underestimated, the separator significantly impacts the electrochemical performance and stable operation of batteries. Halloysite nanotubes (HNTs), a naturally occurring clay material, offer unique structures, surface chemistry, and abundant availability, making them ideal for improving battery separators. This review explores recent studies on HNTs in battery separators, covering preparation and coating methods, and detailed characterizations in both Li-based and non-Li-based secondary batteries. The integration of HNTs in separators offers multiple benefits such as improved thermal stability, enhanced heat conduction, better electrolyte wettability and uptake, and reinforced mechanical strength. Additionally, HNTs effectively mitigate the shuttle effect in Li‑S batteries, suppress organic intermediate migration in Zn-organic batteries, and enhance long-term cycle stability across various battery systems. This comprehensive review demonstrates the significant impact of HNTs on battery technology and paves the way for potential future advancements in energy storage devices.</p></div>","PeriodicalId":245,"journal":{"name":"Applied Clay Science","volume":"261 ","pages":"Article 107570"},"PeriodicalIF":5.3,"publicationDate":"2024-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142232194","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Dissolution process and mechanism of montmorillonite in oxalic acid and sulfuric acid media at various pH levels 蒙脱石在不同 pH 值的草酸和硫酸介质中的溶解过程和机理
IF 5.3 2区 地球科学
Applied Clay Science Pub Date : 2024-09-12 DOI: 10.1016/j.clay.2024.107573
Li Zeng, Tongjiang Peng, Hongjuan Sun, Xiyue Zhang, Dingran Zhao
{"title":"Dissolution process and mechanism of montmorillonite in oxalic acid and sulfuric acid media at various pH levels","authors":"Li Zeng,&nbsp;Tongjiang Peng,&nbsp;Hongjuan Sun,&nbsp;Xiyue Zhang,&nbsp;Dingran Zhao","doi":"10.1016/j.clay.2024.107573","DOIUrl":"10.1016/j.clay.2024.107573","url":null,"abstract":"<div><p>The dissolution of silicate minerals plays a crucial role in many natural geological processes. In order to better comprehend the reaction mechanisms and dissolution characteristics of montmorillonite in different acidic systems, the effects of interfacial reactions of montmorillonite with oxalic and sulfuric acid solutions at various pH levels on the ionic dissolution, crystal structure, and micro-morphology were studied, and the morphology of aluminum and saturation index of secondary mineral were simulated. It was shown that the dissolution amounts of Mg<sup>2+</sup>, Al<sup>3+</sup> and Si<sup>4+</sup> in montmorillonite structure decreased with the increase of pH value, which reflected the dependence of montmorillonite dissolution on the pH value of solution. The dissolution percentages of Mg<sup>2+</sup>, Al<sup>3+</sup> and Si<sup>4+</sup> after the reaction of montmorillonite with oxalic acid solution were greater than those in sulfuric acid solution, and the highest dissolution rate of Al<sup>3+</sup>, indicated that both ligands and protons attacked the surface sites of montmorillonite and accelerated the dissolution of ions. Moreover, oxalate ligands exerted specific binding effects on Al<sup>3+</sup> ions. While reacting with oxalate and sulfate, the tetrahedral, octahedral and interlayer cations of montmorillonite exhibited the non-stoichiometric and inconsistent dissolution. The oxalate ligands have a strong complexation effect on Al<sup>3+</sup>, so that Al<sup>3+</sup> in oxalate solution exists in the form of aluminum oxalate complex, which reduces the effective concentration of Al<sup>3+</sup> in solution and promotes the dissolution of Al<sup>3+</sup> in montmorillonite structure. The Mg<sup>2+</sup> ions settled at octahedral substitution sites possessed weak stability, while those from the interlayer featured strong interlayer interchangeability, demonstrating the dissolution percentage up to 10.85 % and 8.62 % even in oxalic and sulfuric acid solutions at pH of 6.5. All secondary mineral phases in the solution were undersaturated, making the montmorillonite dissolution difficult to balance. Montmorillonite has a high cation exchange capacity, which makes it have a strong buffer capacity to exogenous acids. This study helps to explain the dissolution process of montmorillonite in inorganic and organic acid solutions at different pH value.</p></div>","PeriodicalId":245,"journal":{"name":"Applied Clay Science","volume":"261 ","pages":"Article 107573"},"PeriodicalIF":5.3,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142173134","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
An evaluation of the consistency of data and models for performance assessment: Divalent metal sorption on montmorillonite 评估性能评估数据和模型的一致性:二价金属在蒙脱石上的吸附作用
IF 5.3 2区 地球科学
Applied Clay Science Pub Date : 2024-09-11 DOI: 10.1016/j.clay.2024.107569
Esra Orucoglu , Sylvain Grangeon , Jean-Charles Robinet , Benoît Madé , Christophe Tournassat
{"title":"An evaluation of the consistency of data and models for performance assessment: Divalent metal sorption on montmorillonite","authors":"Esra Orucoglu ,&nbsp;Sylvain Grangeon ,&nbsp;Jean-Charles Robinet ,&nbsp;Benoît Madé ,&nbsp;Christophe Tournassat","doi":"10.1016/j.clay.2024.107569","DOIUrl":"10.1016/j.clay.2024.107569","url":null,"abstract":"<div><p>A detailed analysis of literature data on the retention of divalent metal by purified montmorillonite or montmorillonite-rich material (e.g. bentonite) was conducted. Data for which sufficient experimental conditions were available were modeled with the 2SPNE SC/CE model available in the literature, and with a “minimalist” model, which uses a minimum number of parameters to reproduce the data.</p><p>A successful data modeling could only be achieved if considering (i) cation exchange competition with aqueous Ca<sup>2+</sup> and Mg<sup>2+</sup>, originating from the dissolution of the clay mineral itself or accessory minerals and (ii) precipitation, at high pH, of phases incorporating the divalent metal of interest. However, in many studies, the concentration of aqueous Ca<sup>2+</sup> and Mg<sup>2+</sup> and, more generally, a full characterization of solution composition (e.g., Si, Al, dissolved organic carbon, alkalinity) is not provided, thus impeding accurate data modeling. Further difficulties stem from uncertainties related to the nature of the solids precipitating at high pH and missing or inaccurate thermodynamic data related to mineral solubility.</p><p>Log <em>K</em><sub>D</sub> values cannot be predicted from available literature data with an accuracy better than ±1 log unit, without sorption data obtained on a material representative of in situ conditions. In addition, the most reactive sites, commonly referred to as strong sites, which have been characterized only on some, but not all, reference clay materials, should not be considered in blind predictions based on the mineralogical composition of clay materials.</p></div>","PeriodicalId":245,"journal":{"name":"Applied Clay Science","volume":"261 ","pages":"Article 107569"},"PeriodicalIF":5.3,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S016913172400317X/pdfft?md5=8de5ac82cef0be2a25a265bf89ec58d3&pid=1-s2.0-S016913172400317X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142168022","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Hybrid nano-carrier of citral in starch composites for potential application in active packaging 淀粉复合材料中柠檬醛的混合纳米载体在活性包装中的潜在应用
IF 5.3 2区 地球科学
Applied Clay Science Pub Date : 2024-09-05 DOI: 10.1016/j.clay.2024.107550
Gianluca Viscusi , Elena Lamberti , Elisa Boccalon , Francesco Fancello , Severino Zara , Aurélie Schoubben , Morena Nocchetti , Giuliana Gorrasi
{"title":"Hybrid nano-carrier of citral in starch composites for potential application in active packaging","authors":"Gianluca Viscusi ,&nbsp;Elena Lamberti ,&nbsp;Elisa Boccalon ,&nbsp;Francesco Fancello ,&nbsp;Severino Zara ,&nbsp;Aurélie Schoubben ,&nbsp;Morena Nocchetti ,&nbsp;Giuliana Gorrasi","doi":"10.1016/j.clay.2024.107550","DOIUrl":"10.1016/j.clay.2024.107550","url":null,"abstract":"<div><p>Nowaday the use of essential oils, having antimicrobial activity, is quite limited in the field of active packaging for the difficulty to retain the active compound for a long time into the material. The paper reports the design and fabrication of a nano-carrier able to incorporate and protect an essential oil (i.e. citral) for targeted applications. The hybrid filler was produced by growing layered double hydroxide (LDH) nanocrystals as plates on halloysite nanotubes (Hal) (Hal@LDH). Such hybrid filler was used as a carrier of citral as an antimicrobial essential oil. The active filler was incorporated into the starch matrix at 5, 10, and 15 wt% and films were produced. The structural organization of the filler was conducted by using Scansion Electron Microscopy (SEM), Thermogravimetric Analysis (TGA) and X-ray Diffraction (XRD) analysis. The obtained bio-composite films were structurally analyzed through XRD and SEM with EDX analysis. The physical performances were evaluated through the analysis of mechanical properties, contact angle, radical scavenging activity and release kinetics of citral, as a function of filler loading. To assess the possibility of using such composites for food packaging applications, tests were carried out on different strains such as <em>Escherichia coli, Listeria monocytogenes, and Salmonella bongori</em>.</p></div>","PeriodicalId":245,"journal":{"name":"Applied Clay Science","volume":"261 ","pages":"Article 107550"},"PeriodicalIF":5.3,"publicationDate":"2024-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142149741","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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