Particuology最新文献

{"title":"Characterization of Metarhizium anisopliae spore extraction in a rotary drum using DEM method","authors":"Daiane Bortolote Ferreira ,&nbsp;Ana Paula Messias ,&nbsp;Dyrney Araújo dos Santos ,&nbsp;Nicole Vorhauer-Huget ,&nbsp;Evangelos Tsotsas ,&nbsp;João Cláudio Thoméo","doi":"10.1016/j.partic.2025.12.005","DOIUrl":"10.1016/j.partic.2025.12.005","url":null,"abstract":"<div><div>The fungus <em>Metarhizium anisopliae</em> is commonly cultivated on rice, and the extraction of its spores remains a critical step with room for optimization in biofactories. Rotary drums are emerging as a promising technology. This study evaluated the effect of drum rotation speed (30 and 60 ​rpm) and particle moisture content (0.250; 0.111; and 0.053 ​kg-w/kg-ds) on the collision forces and frequencies of rice particles during the extraction process. To this end, the Discrete Element Method (DEM) was applied to simulate particle motion and collisions. The simulations were carried out using a rotary drum with a diameter of 20 ​cm and a length of 33 ​cm, equipped with two straight lifters. Spherical particles with structural and material properties referring to conidiated rice particles of different moisture contents were used. The DEM input parameters, restitution as well as static and rolling friction coefficients for particle-particle and particle-wall contacts, were experimentally determined. The experiments indicated that the moisture content of the particles predominantly affects the sliding friction coefficient, while the softness resulting from the cooking of the rice mainly influences the coefficient of restitution. The rolling friction coefficient, in turn, was primarily impacted by the sphericity of the particles. Additionally, the reduction in moisture content, by decreasing the drum's filling degree, promoted the expansion of the active layer, the region associated with more intense particle collisions. The results indicated that, despite the higher collision velocities observed at 60 ​rpm, the frequency of impacts with sufficient energy to overcome adhesive forces did not significantly increase compared to the 30 ​rpm condition. As a major outcome, DEM simulations clearly revealed that the reduction of particle size, associated with decreasing moisture content, resulted in a considerable drop of the filling degree, yielding an expansion of the active layer and therefore enhanced particle mobility. This is an important finding with great interest for the scale-up of continuous spore extraction in rotary drums.</div></div>","PeriodicalId":401,"journal":{"name":"Particuology","volume":"109 ","pages":"Pages 59-74"},"PeriodicalIF":4.3,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145789192","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Influence of zeta potential on properties of cement pastes with partial substitution by industrial wastes","authors":"Julia da Rosa Martins ,&nbsp;Janaíde Cavalcante Rocha ,&nbsp;Vanessa de Amorim Amorim ,&nbsp;Julia Scalabrin Holanda ,&nbsp;Dachamir Hotza ,&nbsp;Luciano Senff","doi":"10.1016/j.partic.2025.12.016","DOIUrl":"10.1016/j.partic.2025.12.016","url":null,"abstract":"<div><div>The incorporation of industrial waste into construction materials offers a sustainable alternative to conventional practices by reducing environmental disposal and minimizing the use of virgin raw materials. Among such residues, basaltic filler (BF) and red mud (RM) show promising potential as partial cement replacements in mortars and concretes. This study introduces an innovative approach by evaluating the role of particle zeta potential in governing the behavior of stabilized cement pastes containing these wastes. Pastes were formulated with Portland Cement II F 40 (CP II F 40) and a retarding additive to maintain stability over 72 h, with BF and RM used as partial cement substitutes. The zeta potential and sedimentation behavior of the raw materials were measured, and their influence on paste flowability, rheology, and setting time was systematically analyzed. Results revealed that the highly negative zeta potential of BF (−13.7 mV) and RM (−18.7 mV) improved particle dispersion and reduced sedimentation. BF contributed to lower yield stress, plastic viscosity, and shear stress, while RM, despite a similar electrokinetic profile, exhibited rheological behavior strongly influenced by its high surface area and reactivity. These findings underscore the relevance of zeta potential as a predictive parameter in designing sustainable cementitious systems with industrial waste additions.</div></div>","PeriodicalId":401,"journal":{"name":"Particuology","volume":"109 ","pages":"Pages 141-152"},"PeriodicalIF":4.3,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145922229","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Wrinkled spray-dried nanocellulose/chitosan microparticles as bio-based carriers for curcumin: Linking particle morphology to adsorption and release mechanisms","authors":"Huynh Vu Thanh Luong ,&nbsp;My Tran Diep ,&nbsp;Ngoc Cham Phan ,&nbsp;Ngoc Yen Nguyen ,&nbsp;Duy Toan Pham ,&nbsp;Trong Tuan Nguyen ,&nbsp;Huynh Giao Dang","doi":"10.1016/j.partic.2025.12.022","DOIUrl":"10.1016/j.partic.2025.12.022","url":null,"abstract":"<div><div>This study developed chitosan–nanocellulose (CNC/CTS) microparticles via spray-drying as carriers for oral delivery of curcumin. Cellulose was extracted from <em>Nypa fruticans</em> fibers using a green electrochemical method and converted to nanocrystals, which were then combined with chitosan at varying CNC concentrations (1–7 %) and CNC:CTS ratios (1:1, 2:1, 4:1) to produce microparticles with tunable, wrinkled, spherical morphologies. Curcumin loading was performed by spray-drying or post-adsorption, with the latter achieving higher capacity (34.7 mg/g), ∼5.4-fold solubility enhancement, and sustained release over 24 h in simulated intestinal fluid following zero-order kinetics. Mucoadhesion tests showed strong mucin binding (&gt;60 %) and increased viscosity, indicating potential for prolonged gastrointestinal residence. Mechanistic analyses revealed multi-modal interactions—including hydrogen bonding, electrostatic forces, and π–π stacking—governing adsorption and release behavior. These results demonstrate that particle morphology and surface chemistry can be tuned to optimize delivery performance, highlighting CNC/CTS microparticles as a sustainable, scalable platform for oral administration of poorly soluble bioactives.</div></div>","PeriodicalId":401,"journal":{"name":"Particuology","volume":"109 ","pages":"Pages 153-164"},"PeriodicalIF":4.3,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145922230","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Experimental investigation into the role of particle morphology in the strength and dilatancy behaviour of aeolian dune sand","authors":"Shiva Prashanth Kumar Kodicherla ,&nbsp;Minyi Zhu ,&nbsp;Kamoca Fernandes ,&nbsp;Darga Kumar Nandyala ,&nbsp;Naveen Revanna","doi":"10.1016/j.partic.2025.12.012","DOIUrl":"10.1016/j.partic.2025.12.012","url":null,"abstract":"<div><div>This study investigates the role of particle morphology in the strength and dilatancy behaviour of Namibian dune sand under direct shear test (DST) conditions. For this purpose, a series of DSTs were performed under three normal stresses (50, 100, and 200 kPa) and three relative densities (0.25, 0.5, and 0.75). To understand the role of particle morphology, the particle shape descriptors, including aspect ratio, roundness, convexity, sphericity, and overall regularity, were quantified from two-dimensional binary images derived from scanning electron microscopy using a computational geometry approach considering the major plane of orientation. Results indicate that the stress ratio exhibits strain-hardening followed by softening in dense assemblies, while loose assemblies display continuous hardening. The vertical strain and dilatancy angle decrease with increasing normal stress, whereas peak friction angles rise with relative density due to enhanced particle interlocking; critical state friction angles remain largely insensitive to density, reflecting stabilisation at ultimate shearing. Bolton's empirical model underestimates dilatancy angles, which are highly sensitive to normal stress (empirical constant, Q ≈ 10.47 at 200 kPa). The critical state parameters in the void's ratio – logarithm of normal stress normalised by atmospheric pressure plane vary systematically with density and particle regularity, aligning with literature and confirming the robustness of the proposed framework. These findings validate constitutive predictions and underscore the pivotal role of particle morphology in controlling sand strength and dilatancy, offering insights for physically grounded constitutive modelling of granular materials.</div></div>","PeriodicalId":401,"journal":{"name":"Particuology","volume":"109 ","pages":"Pages 165-179"},"PeriodicalIF":4.3,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145922231","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Engineering particulate architectures for hybrid energy storage: Bridging the gap between intercalation capacity and adsorption kinetics","authors":"Mohssine Ghazoui ,&nbsp;Otmane Boudouch ,&nbsp;Aboubacar Sidigh Sylla ,&nbsp;Kaoutar Moulakhnif ,&nbsp;Siham Dabali ,&nbsp;Reda Elkacmi","doi":"10.1016/j.partic.2025.12.019","DOIUrl":"10.1016/j.partic.2025.12.019","url":null,"abstract":"<div><div>Electrochemical energy storage faces a persistent trade-off: batteries deliver high energy densities via ion intercalation but remain kinetically limited, whereas supercapacitors provide ultrafast power and outstanding durability through interfacial adsorption but suffer from low energy densities. This dichotomy has become a bottleneck for electric mobility, renewable grid stabilization, and portable electronics.</div><div>This review introduces a unifying paradigm in which absorption acts as a capacity provider and adsorption as a speed enabler. We critically examine the fundamentals of both mechanisms and survey state-of-the-art materials, from graphite, transition-metal oxides, and phosphates to bio-derived carbons, graphene, MOFs, COFs, and emerging sodium-ion and solid-state systems. Particular emphasis is placed on hybrid devices such as lithium-ion capacitors and hybrid supercapacitors, which already achieve 30–70 Wh kg⁻¹ with multi-kW kg⁻¹ power output and lifetimes exceeding 20,000 cycles.</div><div>Looking ahead, disruptive directions include solid-state architectures, bio-inspired electrodes, ultra-fast charging infrastructures (&gt;500 kW), and circular-economy strategies. By reconciling autonomy and speed, the absorption–adsorption paradigm charts a roadmap for next-generation storage systems, capable of supporting the 2030–2040 transition to a resilient, electrified, low-carbon society.</div></div>","PeriodicalId":401,"journal":{"name":"Particuology","volume":"109 ","pages":"Pages 192-210"},"PeriodicalIF":4.3,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145922233","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Toughening modification of bismaleimide resin with a cyano-containing thermoplastic PPENK particles","authors":"Zhiyuan Cheng ,&nbsp;Xinbo Dong ,&nbsp;Cheng Liu","doi":"10.1016/j.partic.2025.12.014","DOIUrl":"10.1016/j.partic.2025.12.014","url":null,"abstract":"<div><div>The 4,4′-bismaleimidodiphenyl-methane (BDM) resin, as one of the most important thermoset resin, exhibits poor toughness, which prevents it from adapting to high technical requirements and hinder its further development. Novel poly (phthalazinone ether nitrile ketone)s (PPENK) with twisted, non-coplanar phthalazinone units and highly polar cyano side groups into the main chain of poly (aryl ether ketone) molecules were synthesized and used to modify the blends of BDM/diallyl bisphenol A (DABPA). The thermal and mechanical properties of modified BDM resin have been investigated thoroughly. The role of cyano group content of PPENK on the mechanical properties of modified BDM resin has been recognized. The impact strength of modified BDM resin reached up to 26.25 kJ/m², and the glass transition temperature can still maintain in a high level, in the range of 280–291 °C, indicating the excellent thermal properties of modified BDM resin. Moreover, the island-structure particles have been analyzed and the toughening mechanism of BDM resin modified by PPENK particles has been revealed. This work provides a new strategy for design of high-performance thermoplastic toughening agents for BDM resin with improved toughness and thermal properties.</div></div>","PeriodicalId":401,"journal":{"name":"Particuology","volume":"109 ","pages":"Pages 231-237"},"PeriodicalIF":4.3,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145973604","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluation of effects of particle parameters on the particle bed in supercritical CO2 fractures using coupled CFD-DEM approach","authors":"Bin Li,&nbsp;Lele Yang,&nbsp;Xiaodong Chen,&nbsp;Chengyu Huang,&nbsp;Yue Wu","doi":"10.1016/j.partic.2025.11.017","DOIUrl":"10.1016/j.partic.2025.11.017","url":null,"abstract":"<div><div>In this study, a coupled CFD–DEM framework incorporating heat transfer was established to elucidate the transport and deposition behavior of proppant particles in supercritical CO₂ (SC-CO₂) fracturing. A three-dimensional fracture-scale physical model was developed to investigate the effects of particle concentration, density, diameter, and non-sphericity on the evolution of the proppant bed. The simulations reveal that both the equilibrium height and length of the granular bed increase with particle concentration, exhibiting a near-linear dependence on the injected mass flux. As particle density rises, the bed height increases while the deposition front advances upstream, facilitating earlier bed formation. Increasing particle diameter from 0.4 ​mm to 1 ​mm produces pronounced morphological changes—larger particles form thicker, shorter beds, whereas smaller particles are more easily transported to distal fracture regions. Enhanced particle non-sphericity promotes the development of higher and wider beds due to increased mechanical interlocking and larger inter-particle voids, which strengthen flow-channel connectivity and potentially improve hydrocarbon recovery. The integrated thermal–hydrodynamic–granular analysis demonstrates that SC-CO₂'s temperature-dependent viscosity and density variations significantly modulate drag, lift, and buoyancy forces, jointly governing the self-organization and stability of proppant beds within fractures.</div></div>","PeriodicalId":401,"journal":{"name":"Particuology","volume":"109 ","pages":"Pages 12-24"},"PeriodicalIF":4.3,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145789278","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Morphology controlled synthesis of ZSM-5 and enhanced catalytic activity in polypropylene hydrocracking","authors":"Ziru Wang ,&nbsp;Li Gao ,&nbsp;Ying Zhang ,&nbsp;Xia Zhang ,&nbsp;Bingsen Zhang","doi":"10.1016/j.partic.2025.11.016","DOIUrl":"10.1016/j.partic.2025.11.016","url":null,"abstract":"<div><div>ZSM-5 zeolite has emerged as an outstanding catalyst in converting waste plastics into high-value chemicals. Constructing hierarchical micro-mesoporous ZSM-5 can significantly enhance diffusion characteristics and consequently improve catalytic cracking performance. The morphology of ZSM-5 plays a crucial role in altering its catalytic hydrocracking efficiency in plastic degradation, but the reasons behind this is not clear. Herein, by precisely adjusting the structure-directing agent (SDA) ratio to control nucleation dynamics, we have developed a morphology-controlled synthesis strategy for ZSM-5 zeolites. Two distinct hierarchical ZSM-5 catalysts were successfully fabricated: plate-shaped n-ZSM-5 and quasi-spherical s-ZSM-5. And, increasing the SDA content was worked in promoting nucleation kinetics, facilitating the incorporation of active components into the zeolite framework, and increasing surface acid site density. The plate-shaped n-ZSM-5 exhibited exceptional catalytic performance in polypropylene hydrocracking with a liquid yield of 57.3 ​%, and proved to maintain effective activity for the actual conversion of plastic waste. The catalytic mechanism reveals that the morphology engineering can effectively regulate mass transport within catalyst pores, provide a novel approach for tailoring zeolite catalyst properties. This work offers fundamental insights into structure-performance relationships for advanced plastic upcycling catalysts.</div></div>","PeriodicalId":401,"journal":{"name":"Particuology","volume":"108 ","pages":"Pages 272-279"},"PeriodicalIF":4.3,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145683487","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mapping strategies for unresolved CFD-DEM modeling of fluid-solid flows: Latest developments and perspectives","authors":"Lianyong Zhou ,&nbsp;Zhongmei Li ,&nbsp;Zheng-Hong Luo ,&nbsp;Li-Tao Zhu","doi":"10.1016/j.partic.2025.11.008","DOIUrl":"10.1016/j.partic.2025.11.008","url":null,"abstract":"<div><div>The accurate transfer of discrete particle information to continuum Eulerian fields, known as mapping or coarse-graining, plays a critical role in unresolved CFD-DEM modeling, governing both numerical stability and physical fidelity. Over the years, a variety of strategies have been proposed, spanning from local methods such as the satellite point scheme to non-local approaches based on kernel functions, diffusion, or hybrid formulations. Each method balances trade-offs between smoothness, conservation, computational efficiency, and applicability to complex grid configurations or non-spherical particles. This perspective summarizes the general methodology, representative implementations, and typical applications of existing mapping algorithms, and analyzes their respective merits and limitations. Particular attention is given to challenges associated with small grid-to-particle size ratios, irregular geometries, computational costs, and multi-physics coupling. Emerging directions, including adaptive and hybrid schemes, consistency with turbulence modeling, extensions to polydisperse and non-spherical particles, and machine learning-aided mapping acceleration, are discussed. Continued efforts in these areas promise to improve the robustness, accuracy, and scalability of CFD-DEM simulations, ultimately enabling more generalized and reliable modeling of complex multiphase flows in both research and industrial applications.</div></div>","PeriodicalId":401,"journal":{"name":"Particuology","volume":"108 ","pages":"Pages 41-53"},"PeriodicalIF":4.3,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145658402","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Gaussian integral method for void fraction","authors":"Alireza Kianimoqadam,&nbsp;Justin Lapp","doi":"10.1016/j.partic.2025.10.014","DOIUrl":"10.1016/j.partic.2025.10.014","url":null,"abstract":"<div><div>A novel method, the Gaussian Integral Method (GIM), is presented for calculating void fractions in Computational Fluid Dynamics–Discrete Element Method (CFD-DEM) simulations. GIM is versatile and applicable to various grid types, including structured and unstructured polyhedral meshes, without requiring special boundary treatments. An optimization technique is introduced to make GIM independent of grid resolution and type. The method is validated against experimental data from a fluidized bed, demonstrating that GIM produces realistic simulations closely resembling experimental observations. Additionally, unstructured polyhedral grids using GIM outperform structured grids of equivalent resolution, yielding results more aligned with experimental data. The gradient of the void fraction is computed in the CFD solver and utilized in the DEM solver for precise estimation at particle locations. Overall, GIM provides an effective solution for void fraction calculations in particulate media simulations with complex geometries, enhancing the accuracy and applicability of CFD-DEM simulations for industrial processes.</div></div>","PeriodicalId":401,"journal":{"name":"Particuology","volume":"108 ","pages":"Pages 125-142"},"PeriodicalIF":4.3,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145658413","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}