Article
Engineering, Manufacturing
Kuangnan Zhong, Zhichao Liu, Fazhou Wang
Summary: In this study, printable gamma-C2S slurries were developed based on the carbonation of calcium silicate, and their printability was demonstrated using extrusion-based layer deposition. The rheology of the slurry was controlled by three modifying agents, including CMC, HPMC, and PAM. The printed samples exhibited high compressive strength and inter-layer bonding strength, which can be attributed to the diffusion of carbonation reaction and densification by carbonation products. The proposed printing-carbonation synergistic enhancement technique allows for independent design and expands the diversity of geometrical designs in 3D printing structures.
ADDITIVE MANUFACTURING
(2023)
Article
Construction & Building Technology
Munique Fante, Francisco Roger Carneiro Ribeiro, David Brandao Nunes, Regina Celia Espinosa Modolo, Claudio de Souza Kazmierczak, Mauricio Mancio, Francisco Manoel Wohnrath Tognoli, Afonso Rangel Garcez de Azevedo, Marlova Piva Kulakowski
Summary: This study evaluated the physical and chemical effects of calcium carbonate limestone filler in mortar pastes subjected to accelerated carbonation. Results showed that a 25% filler substitution at a water/cement ratio of 0.42 achieved the best performance in terms of compression strength and water absorption. Carbonation primarily affected by the water/cement ratio rather than substitution level, consuming portlandite and forming calcite. Further studies identified additional calcium carbonate polymorphs after 28 days of accelerated carbonation.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2022)
Article
Engineering, Environmental
Caitlin Courtney, Antoine Brison, Dyllon G. Randall
Summary: Stabilizing urine with calcium hydroxide can prevent enzymatic urea hydrolysis, allowing for maximum nitrogen recovery. Adding air and carbon dioxide to stabilized urine can effectively remove calcium ions as calcium carbonate, with air bubbling being the more cost-efficient option. The study found that calcium removal efficiency can reach up to 98% at certain air flow rates, and that even if the pH decreases, urine remains stabilized with no enzymatic urea hydrolysis.
Article
Green & Sustainable Science & Technology
Xujia You, Xiang Hu, Zhiqiang Xiao, Zain Ali Saleh Bairq, Wei Chen, Caijun Shi
Summary: Cement production emits a significant amount of CO2, contributing to global warming. However, cement's main mineral component can solidify CO2 and convert it into stable calcium carbonate, leading to the production of low-carbon building materials. This study proposes a thermodynamic model to simulate the formation of different calcium carbonate polymorphs during the carbonation of Portland cement with the addition of common stabilizer MgCl2. The developed model accurately predicts the proportion of calcium carbonate polymorphs and suggests the optimal conditions for their formation.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Engineering, Environmental
Jiajie Wang, Noriaki Watanabe, Kosuke Inomoto, Masanobu Kamitakahara, Kengo Nakamura, Takeshi Komai, Noriyoshi Tsuchiya
Summary: This study explores a key challenge in aqueous indirect CO2 mineralization, proposing and experimentally examining a sustainable process for enhanced CO2 mineralization using a potentially recyclable alkaline solution of the chelating agent GLDA at near-room temperatures. The process involves enhanced Ca extraction from silicates, Ca carbonation, and regeneration of the extraction solution via CO2 gas dissolution. The study demonstrates the feasibility of enhanced Ca extraction with almost all GLDA molecules combining with Ca at an optimum condition, contributing to efficient Ca carbonation and solution regeneration.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Engineering, Chemical
Natalia Czaplicka, Donata Konopacka-Lyskawa, Patrycja Lewandowska, Marcin Lapinski, Rafat Bray
Summary: This work aimed to compare the impact of selected process parameters on the precipitation of CaCO3 by the gas-liquid method, using a model post-distillation liquid from the Solvay process. The type of absorption promoter characterized by its pKa was found to have the most significant influence on reaction time, polymorphic composition, particle size, and specific surface area of the obtained CaCO3. All precipitated CaCO3 samples were highly agglomerated mixture of vaterite and calcite.
Article
Green & Sustainable Science & Technology
Peiliang Shen, Yi Jiang, Yangyang Zhang, Songhui Liu, Dongxing Xuan, Jianxin Lu, Shipeng Zhang, Chi Sun Poon
Summary: In this study, a wet carbonation method was developed to produce aragonite whisker using fine recycled concrete waste (FRCW) for efficient CO2 capture and conversion. The operational factors, including MgCl2 concentration, temperature, CO2 concentration and duration, were investigated for the formation of aragonite. The results showed that this carbonation process can produce needle-like aragonite whisker-rich materials and capture a large amount of CO2 within a short time. The MgCl2 concentration and temperature were crucial for aragonite nucleation, while a lower CO2 concentration only slightly affected the carbonation rate without changing the carbonation products. The proposed approach offers a novel direction for CO2 sequestration.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2023)
Article
Engineering, Environmental
Hamideh Mehdizadeh, Kim Hung Mo, Tung-Chai Ling
Summary: This research proposes a two-step process to convert recycled concrete fines (RCF) into vaterite CaCO3 through calcium extraction and leachate carbonation. By optimizing the operating conditions, vaterite with a purity of 97.8% was successfully produced, and CO2 sequestration goals were achieved.
RESOURCES CONSERVATION AND RECYCLING
(2023)
Article
Chemistry, Multidisciplinary
Zijian Li, Jie Chen, Zongze Lv, Yichao Tong, Jingyu Ran, Changlei Qin
Summary: Carbonation of industrial alkaline resources can achieve dual effects of CO2 sequestration and solid waste management. The carbonated product may act as a potential cementitious backfill material. This study investigates the CO2 mineralization characteristics and potential of typical industrial solid wastes, mine tailings, and their mixtures by direct aqueous carbonation, and explores the effects of reaction parameters. The results show that industrial solid wastes with a high Ca content have better carbonation activity, while the carbonation of mine tailings is weak. The combination of coal fly ash with tailings has a potential stimulative effect. The optimal reaction parameters are also determined.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2023)
Article
Chemistry, Physical
Xin Zhang, Alan S. Lea, Anne M. Chaka, John S. Loring, Sebastian T. Mergelsberg, Elias Nakouzi, Odeta Qafoku, James J. De Yoreo, Herbert T. Schaef, Kevin M. Rosso
Summary: Understanding crystallization pathways at nanoscale under high pressure and temperature is challenging. This study used high-pressure atomic force microscopy to directly observe brucite carbonation in water-bearing supercritical carbon dioxide, revealing that the amorphous magnesium carbonate acts as a seed for the crystallization of nesquehonite. Additionally, in situ infrared and thermogravimetric-mass spectrometry analyses indicated the stoichiometry of the amorphous intermediate.
Article
Chemistry, Multidisciplinary
Natalia Czaplicka, Dominik Dobrzyniewski, Szymon Dudziak, Chunqing Jiang, Donata Konopacka-Lyskawa
Summary: This research investigates the impact of organic substances containing hydroxyl groups on the reduction of NH3 escape and the improvement of CO2 capture during the precipitation of calcium carbonate. The addition of neopentyl glycol (NPG) has been found to be the most effective in reducing NH3 escape and increasing CO2 capture efficiency.
JOURNAL OF CO2 UTILIZATION
(2022)
Article
Engineering, Environmental
Gyudae Sim, Sujin Hong, Seokyoon Moon, Soyoung Noh, Junhee Cho, Purnaning Tuwuh Triwigati, Ah-Hyung Alissa Park, Youngjune Park
Summary: The paper proposes a novel concept for carbon mineralization, which not only fixes CO2 but also recovers rare earth elements using the pH swing-assisted carbonation process. Experimental results show that using oxalic acid as a precipitation agent is advantageous for both CO2 storage and REE recovery.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Construction & Building Technology
Ting Jiang, Kai Cui, Jun Chang
Summary: The extensive use of Portland cement with a large carbon footprint has caused a significant climate crisis. The proportions of β-C2S and γ-C2S in C2S paste are positively correlated with compressive strength and carbonation degree. An optimum value of compressive strength (54.4 MPa) and carbonation degree (36.7%) can be achieved when β-C2S is 60 wt% and γ-C2S is 40 wt%.
CEMENT & CONCRETE COMPOSITES
(2023)
Article
Engineering, Chemical
Mingzhi Luo, Guoquan Zhang, Yuguo Fang, Lingzhuo Cao, Zhanbo Guo, Kun Wang, Jia Li
Summary: This article presents a two-step synthesis method for synthesizing calcium carbonate using ammonium carbonate and calcium chloride as raw materials. The pH of the mineralized solution was studied under different factors, such as temperature and ammonium carbonate concentration. The results showed that increasing the temperature promoted the formation of submicron calcite type calcium carbonate, while changing the concentration of ammonium carbonate had little effect on the crystal phase and size of the product.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Construction & Building Technology
Rakibul I. Khan, Warda Ashraf, Jan Olek
Summary: This study investigated the application of amino acids in controlling CaCO3 crystallization in carbonation cured wollastonite composites. The use of amino acids resulted in the formation of stable ACC, vaterite, and aragonite, as well as enhanced flexural and compressive strength of the composites. These improvements were attributed to the reduced critical pore size and the formation of organic-inorganic hybrid phases in the matrix.
CEMENT AND CONCRETE RESEARCH
(2021)
Article
Engineering, Geological
J. F. Van Stappen, J. A. McBeck, B. Cordonnier, R. P. J. Pijnenburg, F. Renard, C. J. Spiers, S. J. T. Hangx
Summary: High-resolution time-lapse X-ray micro-tomography imaging allows visualization of grain-scale deformation mechanisms during triaxial deformation of reservoir rock, providing important input for developing microphysical models describing compaction of gas reservoirs.
ROCK MECHANICS AND ROCK ENGINEERING
(2022)
Article
Geosciences, Multidisciplinary
C. Bouchayer, J. M. Aiken, K. Thogersen, F. Renard, T. Schuler
Summary: This study aims to understand the transient behavior of surge-type glaciers. A machine learning framework is developed to classify these glaciers based on various features. The study focuses on the Svalbard archipelago and finds that the surface and bed slopes, ice thickness, glacier width, climatic mass balance, and runoff are significant factors in determining surge probability. The study also creates a probability map of surge-type glaciers in Svalbard.
JOURNAL OF GEOPHYSICAL RESEARCH-EARTH SURFACE
(2022)
Article
Geochemistry & Geophysics
J. A. McBeck, B. Cordonnier, F. Renard
Summary: Determining the size of the representative elementary volume (REV) is crucial for upscaling properties from laboratory measurements to crustal systems. The REV size is expected to evolve as fracture networks propagate and coalesce. However, it may not systematically increase in all experiments due to the highly heterogeneous porosity distributions. In sandstone experiments, the REV size does increase systematically, suggesting that intact sandstone estimates may be applicable to damaged sandstone.
GEOPHYSICAL JOURNAL INTERNATIONAL
(2023)
Article
Geochemistry & Geophysics
Maude Julia, Christine V. Putnis, Helen E. King, Francois Renard
Summary: The interactions between calcium carbonate and cadmium-rich fluid were studied at the nano and microscale under fluid flow and static fluid conditions. The study examined three forms of CaCO3: calcite in single crystals of Iceland Spar, calcite in polycrystalline Carrara marble, and aragonite single crystals. The experiments revealed the nanoscale effect of cadmium on CaCO3 dissolution and growth, as well as the precipitation of a Cd-rich phase on the samples' surfaces. Hydrothermal experiments showed that the reactivity of single calcite crystals was passivated by the epitaxial growth of a less soluble Cd-rich endmember on the sample surface. On the other hand, the presence of grain boundaries or structural changes in Carrara marble and aragonite allowed the replacement of samples by a porous (Ca,Cd)CO3 solid-solution phase.
Article
Engineering, Environmental
G. Montes-Hernandez, L. Feugueur, C. Vernier, A. E. S. Van Driessche, F. Renard
Summary: Current wastewater treatment technologies struggle to remove antibiotics, leading to contamination of water sources. This study demonstrates that aqueous carbonation of portlandite can effectively remove commonly used antibiotics from water. Amoxicillin showed the highest removal efficiency (9.5 mg/g), followed by cefazoline (4.3 mg/g) and ceftriaxone (2.7 mg/g). Comparatively, nanomagnetite-interfacial Fenton reaction is more effective in removing amoxicillin (76.5 mg/g), but is slower and more complex chemically. Both methods show promise at the laboratory scale and can be implemented in wastewater treatment plants.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Astronomy & Astrophysics
Eric Quirico, Aurore Bacmann, Cedric Wolters, Basile Auge, Laurene Flandinet, Thibault Launois, John F. Cooper, Veronique Vuitton, Thomas Gautier, Lora Jovanovic, Philippe Boduch, Hermann Rothard, Leopold Desage, Alexandre Faure, Bernard Schmitt, Olivier Poch, William M. Grundy, Silvia Protopapa, Sonia Fornasier, Dale P. Cruikshank, S. Alan Stern
Summary: The New Horizons spacecraft conducted a survey on the classical Kuiper Belt Object (KBO) Arrokoth and discovered a small bilobed object with a red surface. This red color is attributed to reddish organic materials, possibly inherited from the protosolar disk or formed through radiolytic processes. Numerical calculations and experimental simulations were carried out to study the radiolytic scenario. It was found that sputtering is mainly controlled by Solar Wind, and the sputtering rate varies depending on the nature of the material.
Article
Multidisciplinary Sciences
Hikaru Yabuta, George D. Cody, Cecile Engrand, Yoko Kebukawa, Bradley De Gregorio, Lydie Bonal, Laurent Remusat, Rhonda Stroud, Eric Quirico, Larry Nittler, Minako Hashiguchi, Mutsumi Komatsu, Taiga Okumura, Jeremie Mathurin, Emmanuel Dartois, Jean Duprat, Yoshio Takahashi, Yasuo Takeichi, David Kilcoyne, Shohei Yamashita, Alexandre Dazzi, Ariane Deniset-Besseau, Scott Sandford, Zita Martins, Yusuke Tamenori, Takuji Ohigashi, Hiroki Suga, Daisuke Wakabayashi, Maximilien Verdier-Paoletti, Smail Mostefaoui, Gilles Montagnac, Jens Barosch, Kanami Kamide, Miho Shigenaka, Laure Bejach, Megumi Matsumoto, Yuma Enokido, Takaaki Noguchi, Hisayoshi Yurimoto, Tomoki Nakamura, Ryuji Okazaki, Hiroshi Naraoka, Kanako Sakamoto, Harold C. Connolly Jr, Dante S. Lauretta, Masanao Abe, Tatsuaki Okada, Toru Yada, Masahiro Nishimura, Kasumi Yogata, Aiko Nakato, Miwa Yoshitake, Ayako Iwamae, Shizuho Furuya, Kentaro Hatakeda, Akiko Miyazaki, Hiromichi Soejima, Yuya Hitomi, Kazuya Kumagai, Tomohiro Usui, Tasuku Hayashi, Daiki Yamamoto, Ryota Fukai, Seiji Sugita, Kohei Kitazato, Naru Hirata, Rie Honda, Tomokatsu Morota, Eri Tatsumi, Naoya Sakatani, Noriyuki Namiki, Koji Matsumoto, Rina Noguchi, Koji Wada, Hiroki Senshu, Kazunori Ogawa, Yasuhiro Yokota, Yoshiaki Ishihara, Yuri Shimaki, Manabu Yamada, Chikatoshi Honda, Tatsuhiro Michikami, Moe Matsuoka, Naoyuki Hirata, Masahiko Arakawa, Chisato Okamoto, Masateru Ishiguro, Ralf Jaumann, Jean-Pierre Bibring, Matthias Grott, Stefan Schroeder, Katharina Otto, Cedric Pilorget, Nicole Schmitz, Jens Biele, Tra-Mi Ho, Aurelie Moussi-Soffys, Akira Miura, Hirotomo Noda, Tetsuya Yamada, Keisuke Yoshihara, Kosuke Kawahara, Hitoshi Ikeda, Yukio Yamamoto, Kei Shirai, Shota Kikuchi, Naoko Ogawa, Hiroshi Takeuchi, Go Ono, Yuya Mimasu, Kent Yoshikawa, Yuto Takei, Atsushi Fujii, Yu-ichi Iijima, Satoru Nakazawa, Satoshi Hosoda, Takahiro Iwata, Masahiko Hayakawa, Hirotaka Sawada, Hajime Yano, Ryudo Tsukizaki, Masanobu Ozaki, Fuyuto Terui, Satoshi Tanaka, Masaki Fujimoto, Makoto Yoshikawa, Takanao Saiki, Shogo Tachibana, Sei-ichiro Watanabe, Yuichi Tsuda
Summary: Samples of carbonaceous asteroid Ryugu collected by Hayabusa2 spacecraft contain aromatic and aliphatic carbon, ketone, and carboxyl functional groups. The organic matter shows spectroscopic features consistent with chemically primitive carbonaceous chondrite meteorites that experienced aqueous alteration. The morphology of the organic carbon includes nanoglobules and diffuse carbon associated with phyllosilicate and carbonate minerals. The isotope enrichments suggest that the organic matter originated from a cold molecular cloud or the presolar nebula, and the diversity indicates variable levels of aqueous alteration on Ryugu's parent body.
Article
Geochemistry & Geophysics
Jean-Pierre Gratier, Luca Menegon, Francois Renard
Summary: A mechanism involving grain boundary sliding is described for the deformation of fine-grained calcareous shales, which can accommodate large strains of 100%-300% in the Oisans massif in the Western Alps.
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2023)
Article
Water Resources
Marthe Gronlie Guren, Francois Renard, Catherine Noiriel
Summary: Using time-lapse X-ray micro-tomography, this study provides a detailed 3D characterization of the geometry evolution and dissolution rate mapping of four carbonate samples at pH 4.0. The dissolution rates exhibit a large spatial variability, with crystal edges and convex topographies showing the highest rates and flat surfaces and concave areas showing slower retreat. Microcrystalline aragonite dissolves at a higher rate compared to calcite, and rough microcrystalline calcite surface dissolves more slowly than specific faces of calcite spar crystal. The presence of mineral impurities and the geometry of the crystals and fluid-mineral interface affect the global dissolution process of carbonate rocks.
FRONTIERS IN WATER
(2023)
Article
Geosciences, Multidisciplinary
Joachim Mathiesen, Gaute Linga, Marek Misztal, Francois Renard, Tanguy Le Borgne
Summary: Solute transport in multiphase flow through porous media plays a crucial role in natural systems and geoengineering applications. This study investigates dispersion in multiphase flows using highly resolved numerical simulations of immiscible two-phase flow. The results show that the activation and deactivation of different flow pathways under capillary forces accelerate solute spreading compared to single phase flow. The study establishes transport laws under dynamic multiphase flows and identifies the controlling factors for solute dispersion in porous media.
GEOPHYSICAL RESEARCH LETTERS
(2023)
Article
Physics, Applied
Aldritt Scaria Madathiparambil, Kim Robert Tekseth, Fredrik K. Murer, Benoit Cordonnier, Nicolaine Agofack, Jessica McBeck, Pierre Cerasi, Francois Renard, Basab Chattopadhyay, Dag W. Breiby
Summary: Understanding the mechanical behavior of rocks is crucial for subsurface activities. This study combines 4D mu CT imaging with strain analysis to study the deformation process of Draupne shale. The study reveals intermittent deformation at different locations within the sample, which eventually evolves into a major fracture plane. This suggests that the previously reported macroscopic stress-strain relationship of Draupne shale samples may consist of irreversible processes.
PHYSICAL REVIEW APPLIED
(2023)
Article
Geochemistry & Geophysics
Jessica McBeck, Benoit Cordonnier, Yehuda Ben-Zion, Francois Renard
Summary: The spatial organization of deformation can provide important information about the timing of catastrophic failure in the brittle regime. Recent analyses show that deformation experiences temporary phases of delocalization superposed on an overall trend of localization. X-ray tomography experiments reveal that larger confining pressure promotes more dilation and greater localization of high strain events, while greater amounts of preexisting damage promote delocalization. Importantly, dilative strain may provide more reliable information about the timing of catastrophic failure than shear strain.
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2023)
Article
Geochemistry & Geophysics
Fabian Barras, Kjetil Thogersen, Einat Aharonov, Francois Renard
Summary: The question of what arrests an earthquake rupture is crucial for predicting earthquake magnitude. Using a minimal model, researchers have identified the basic physical parameters that may control the arrest of large ruptures and derived closed-form expressions to predict rupture arrest under different conditions.
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2023)
Article
Geochemistry & Geophysics
Stephen Paul Michalchuk, Sascha Zertani, Francois Renard, Florian Fusseis, Alireza Chogani, Oliver Plumper, Luca Menegon
Summary: This study analyzed pseudotachylytes and mylonitized pseudotachylytes from Lofoten, Norway to understand the evolution of fluid pathways and porosity. It was found that porosity is dispersed within the pseudotachylyte vein, but increased along garnet grain boundaries. The porosity is mainly formed due to metamorphic growth of garnet. In the mylonitized pseudotachylyte, porosity is dramatically reduced due to solution-precipitation processes. Porosity reduction may lead to shear zone hardening and new pseudotachylyte formation.
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2023)
Article
Environmental Sciences
Jess Mcbeck, Benoit Cordonnier, Michele Cooke, Laura Fattaruso, Francois Renard
Summary: Determining how fracture network development leads to macroscopic failure in heterogeneous materials may help estimate the timing of failure in rocks in the upper crust as well as in engineered structures. The proportion of extensile and shear deformation produced by fracture development indicates the appropriate failure criteria to apply, and thus is a key constraint in such an effort. According to synchrotron observations and modeling of triaxial compression experiments on granite, fracture networks transition from shear to extensile immediately before macroscopic failure in order to optimize the total mechanical efficiency of the system.
COMMUNICATIONS EARTH & ENVIRONMENT
(2023)
Article
Engineering, Environmental
Xinping Zhang, Yuxin Guo, Xiaoyang Liu, Shun-Yu Wu, Ya-Xuan Zhu, Shao-Zhe Wang, Qiu-Yi Duan, Ke-Fei Xu, Zi-Heng Li, Xiao-Yu Zhu, Guang-Yu Pan, Fu-Gen Wu
Summary: This study develops a nanotrigger HCFT for simultaneous photodynamic therapy and light-triggered ferroptosis therapy. The nanotrigger can relieve tumor hypoxia, induce enhanced photodynamic reaction, and facilitate the continuation of Fenton reaction, ultimately leading to lethal ferroptosis in tumor cells.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Olumide Bolarinwa Ayodele, Toyin Daniel Shittu, Olayinka S. Togunwa, Dan Yu, Zhen-Yu Tian
Summary: This study focused on the semihydrogenation of acetylene in an ethylene-rich stream using two alloyed Pt catalysts PtCu and PtCo. The PtCu catalyst showed higher activity and ethylene yield compared to PtCo due to its higher unoccupied Pt d-orbital density. This indicates that alloying Pt with Cu is more promising for industrial relevant SHA catalyst.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Guowei Chen, Wen-Cheng Chen, Yaozu Su, Ruicheng Wang, Jia-Ming Jin, Hui Liang, Bingxue Tan, Dehua Hu, Shaomin Ji, Hao-Li Zhang, Yanping Huo, Yuguang Ma
Summary: This study proposes an intramolecular dual-locking design for organic luminescent materials, achieving high luminescence efficiency and performance for deep-blue organic light-emitting diodes. The material also exhibits unique mechanochromic luminescence behavior and strong fatigue resistance.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Joren van Stee, Gregory Hermans, Jinu Joseph John, Koen Binnemans, Tom Van Gerven
Summary: This work presents a continuous solvent extraction method for the separation of cobalt and nickel in a millifluidic system using Cyphos IL 101 (C101) as the extractant. The optimal conditions for extraction performance and solvent properties were determined by investigating the effects of channel length, flow rate, and temperature. The performance of a developed manifold structure was compared to a single-channel system, and excellent separation results were achieved. The continuous separation process using the manifold structure resulted in high purity cobalt and nickel products.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Yan Xu, Jingai Jiang, Xinyi Lv, Hui Li, Dongliang Yang, Wenjun Wang, Yanling Hu, Longcai Liu, Xiaochen Dong, Yu Cai
Summary: A programmed gas release nanoparticle was developed to address the challenges in treating diabetic infected wounds. It effectively removes drug-resistant pathogens and remodels the wound microenvironment using NO and H2S. The nanoparticle can eliminate bacteria and promote wound healing through antibacterial and anti-inflammatory effects.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Tong Xia, Zhilin Xi, Lianquan Suo, Chen Wang
Summary: This study investigated a highly efficient coal dust suppressant with low initial viscosity and high adhesion-solidification properties. The results demonstrated that the dust suppressant formed a network of multiple hydrogen bonding cross-linking and achieved effective adhesion and solidification of coal dust through various chemical reactions.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Jinzhi Cai, Zhenshan Li
Summary: A density functional theory-based rate equation was developed to predict the gas-solid reaction kinetics of CaO carbonation with CO2 in calcium looping. The negative activation energy of CaO carbonation close to equilibrium was accurately predicted through experimental validation.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Jianxiong Chen, Fuhao Ren, Ningning Yin, Jie Mao
Summary: This study presents an economically efficient and easily implementable surface modification approach to enhance the high-temperature electrical insulation and energy storage performance of polymer dielectrics. The self-assembly of high-insulation-performance boron nitride nanosheets (BNNS) on the film surface through electrostatic interactions effectively impedes charge injection from electrodes while promoting charge dissipation and heat transfer.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Zijian Li, Zhaohui Yang, Shao Wang, Hongxia Luo, Zhimin Xue, Zhenghui Liu, Tiancheng Mu
Summary: This study reports a strategy for upgrading polyester plastics into value-added chemicals using electrocatalytic methods. By inducing the targeted transfer of *OH species, polyethylene terephthalate was successfully upgraded into potassium diformate with high purity. This work not only develops an excellent electrocatalyst, but also provides guidance for the design of medium entropy metal oxides.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Navneet Singh Shekhawat, Surendra Kumar Patra, Ashok Kumar Patra, Bamaprasad Bag
Summary: This study primarily focuses on developing a sulphur dyeing process at room temperature using bacterial Lysate, which is environmentally friendly, energy and cost effective, and sustainable. The process shows promising improvements in dye uptake and fastness properties.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Dengjia Shen, Hongyang Ma, Madani Khan, Benjamin S. Hsiao
Summary: This study developed cationic PVC nanofibrous membranes with high filtration and adsorption capability for the removal of bacteria and hexavalent chromium ions from wastewater. The membranes demonstrated remarkable performance in terms of filtration efficiency and maximum adsorption capacity. Additionally, modified nanofibrous membranes were produced using recycled materials and showed excellent retention rates in dynamic adsorption processes.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Xiaoyan Wang, Zhikun Wang, Ben Jia, Chunling Li, Shuangqing Sun, Songqing Hu
Summary: Inspired by photosystem II, self-supported Fe-doped NiCoP nanowire arrays modified with carboxylate were constructed to boost industrial-level overall water splitting by employing the concerted proton-coupled electron transfer mechanism. The introduction of Fe and carboxyl ligand led to improved catalytic activity for HER and OER, and NCFCP@NF exhibited long-term durability for overall water splitting.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Pengyao Yu, Ge Yang, Yongming Chai, Lubomira Tosheva, Chunzheng Wang, Heqing Jiang, Chenguang Liu, Hailing Guo
Summary: Thin LTA zeolite membranes were prepared through secondary growth of nano LTA seeds in a highly reactive gel, resulting in membranes with superior permeability and selectivity in gas separation applications.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Baiqin Zhou, Huiping Li, Ziyu Wang, Hui Huang, Yujun Wang, Ruichun Yang, Ranran Huo, Xiaoyan Xu, Ting Zhou, Xiaochen Dong
Summary: The use of machine learning to predict the performance of specific adsorbents in phosphate adsorption shows great promise in saving time and revealing underlying mechanisms. However, the small size of the dataset and insufficient detailed information limits the model training process and the accuracy of results. To address this, the study employs a fuzzing strategy that replaces detailed numeric information with descriptive text messages on the physiochemical properties of adsorbents. This strategy allows the recovery of discarded samples with limited information, leading to accurate prediction of adsorption amount, capacity, and kinetics. The study also finds that phosphate uptake by adsorbents is generally through physisorption, with some involvement of chemisorption. The framework established in this study provides a practical approach for quickly predicting phosphate adsorption performance in urgent scenarios, using easily accessible information.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Paula Alejandra Lamprea Pineda, Joren Bruneel, Kristof Demeestere, Lisa Deraedt, Tex Goetschalckx, Herman Van Langenhove, Christophe Walgraeve
Summary: This study evaluates the use of four esterified fatty acids and three vegetable oils as absorption liquids for hydrophobic VOCs. The experimental results show that isopropyl myristate is the most efficient liquid for absorbing the target VOCs.
CHEMICAL ENGINEERING JOURNAL
(2024)
