Article
Chemistry, Physical
Vafa Feyzi, Vahid Mohebbi
Summary: The CO2-CH4 replacement technique shows promise in enhancing methane recovery rates from methane hydrate deposits, addressing shortcomings of conventional methods. However, due to the complex process, technical and economic inefficiencies remain a challenge. Introducing a combination of CO2-CH4 replacement and depressurization techniques may offer a novel approach to improving methane recovery rates.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Engineering, Environmental
Youngki Lee, Hyeonjin Kim, Wonhyeong Lee, Dong Woo Kang, Jae W. Lee, Yun-Ho Ahn
Summary: This review explores the potential of clathrate hydrates as a technology for CO2 capture and separation, showcasing methods to improve CO2 hydrate formation and separate CO2 from gas mixtures. It also delves into additional applications such as cold energy storage and the advantages of the CH4-CO2 replacement method.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Engineering, Environmental
Yan Li, Zhenyuan Yin, Hongfeng Lu, Chenlu Xu, Xuejian Liu, Hailin Huang, Daoyi Chen, Praveen Linga
Summary: Carbon capture and sequestration (CCS) is widely recognized as the most effective technology for reducing CO2 emissions and mitigating global climate change. Hydrate-based CO2 sequestration (HBCS) has emerged as a promising technology, and there is growing interest in using hydrophobic amino acids to enhance CO2 hydrate formation kinetics.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Energy & Fuels
Bjorn Kvamme
Summary: This study investigates the difference in stability between CO2 and CH4 hydrates and the effect of adding N-2 gas on the thermodynamic properties of the system. The results show that the Gibbs free energy of CO2 hydrate formed from average seawater is slightly lower than that of CH4 hydrate. The stability of hydrates decreases with increasing salinity, but the difference in stability between the injection gas and CH4 hydrate remains almost the same.
Article
Chemistry, Multidisciplinary
Lanyun Wang, Xiaoran Lu, Yongliang Xu
Summary: This study found that adding 5-10% RNS-A can shorten the induction time during CO2 hydrate formation, and 6% RNS-A showed the best gas consumption and reaction time, making it the optimal concentration for CO2 capture and sequestration.
Article
Energy & Fuels
Yan-Yun Xiao, Shi-Dong Zhou, Xiao-Yan Li, Jiao-Jiao Wang, Zhi-Min Wu, Yang Liu, Xiao-Fang Lv
Summary: This study investigated the influence of wax crystal concentrations on CO2 hydrate formation in a wax-containing system. It was found that high concentrations of wax crystals reduced the induction time of hydrate formation, while low concentrations increased the induction time. Additionally, the cumulative gas consumption during hydrate formation decreased gradually with the increase of wax crystal concentrations. These experimental results are important for understanding the kinetic characteristics of hydrate formation in the wax-containing system, which has implications for pipeline flow assurance, safety, economic security, and carbon capture and storage development.
Article
Chemistry, Multidisciplinary
Ahmed Omran, Nikolay Nesterenko, Valentin Valtchev
Summary: Clathrate hydrates are a potential storage medium for methane, but their applicability is limited by low gas uptake and slow formation kinetics. This study explores the use of acidic and basic zeolites as kinetic hydrate promoters (KHPs). The results show that acidic zeolites outperform basic ones, with the optimum performance achieved at 0.5 wt% zeolite concentration.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2022)
Article
Thermodynamics
Jiang Bian, Hongchao Wang, Kairan Yang, Junwen Chen, Xuewen Cao
Summary: The submarine CO2 hydrate-based geological storage is an effective method for carbon capture and storage, which is significant for mitigating the greenhouse effect. The pressure and temperature variation can affect the storage stability of CO2 hydrate. Experimental studies show that the energy distribution in the hydrate mixed system is uneven during dissociation, and the heat flux flows to the region with high sensible heat consumption.
Review
Energy & Fuels
Mengjun Zhang, Baojiang Sun, Shujie Liu, Litao Chen, Yonghai Gao, Zhiyuan Wang
Summary: Hydrate-based CO2 sequestration is a promising technology for reducing CO2 emissions and mitigating global warming. This review focuses on the research progress of compound additives to promote the formation of CO2 hydrate. The mechanisms and effects of different additives on the formation characteristics of CO2 hydrate are analyzed and compared. Challenges and constraints of current compound additives are discussed, and future development trends and directions are proposed.
Article
Energy & Fuels
Caifeng Yang, Mucong Zi, Guozhong Wu, Xue Zou, Kai Liu, Daoyi Chen
Summary: This study evaluated the influence of kinetic hydrate inhibitor (KHI) on methane - propane hydrate formation kinetics under different subcooling and concentration conditions. It proposed a "concentration effect" concept that highlighted the nonmonotonic relationship between KHI performance and concentration. Two hypotheses were proposed to explain this phenomenon, and the results showed that the concentration effect became less obvious under certain experimental conditions.
Article
Chemistry, Physical
Huiyong Liang, Dawei Guan, Yuda Liu, Lunxiang Zhang, Jiafei Zhao, Lei Yang, Yongchen Song
Summary: This study used in situ high-resolution X-ray computed tomography measurements to explore the mechanisms of hydrate growth in the presence of surfactants. It was found that the presence of hydrate crystals triggered enhanced growth on the reactor wall. A time delay was observed before the bulk water reservoir transformed into hydrate. The lower interfacial tension between the hydrate surface and the solution facilitated its adsorption onto the reactor wall. These fundamental results are valuable for understanding the mechanism of hydrate growth in the presence of surfactants and its potential applications.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Review
Environmental Sciences
Qi Zhang, Jih-Gaw Lin, Zhe Kong, Yanlong Zhang
Summary: Anammox is a low-carbon wastewater biological nitrogen removal process that achieves chemoautotrophic nitrogen removal under anaerobic and anoxic conditions. However, the physiological limitations of AnAOB often cause problems in engineering applications. This paper reviews the role of exogenous additives in optimizing Anammox and provides helpful information for its engineering application.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Green & Sustainable Science & Technology
Amin Hosseini Zadeh, Ijung Kim, Seunghee Kim
Summary: Hydrate-based CO2 sequestration (HBCS) is a new method to store large amounts of CO2 in geological sediments as crystalline solids. This study investigates the characteristics and kinetics of CO2 hydrate formation and dissociation under different conditions. The results suggest that hydrate nucleation and growth are limited in a porous medium due to solid particles, limited CO2 mass transfer, and heat transfer. Limited CO2 diffusion, hydrate nucleation, and better protection of hydrates are key factors for successful formation in the porous medium.
INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL
(2023)
Review
Energy & Fuels
Meng-Ting Sun, Fu-Peng Song, Guo-Dong Zhang, Jing-Zhe Li, Fei Wang
Summary: Gas hydrates have great potential in energy storage and transportation, but the stochastic induction time and low formation rate hinder large-scale industrialization. Effective methods are needed to improve these limitations.
Article
Energy & Fuels
Chenchen Lan, Ran Liu, Shuhui Zhang, Qing Lyu, Yanjia Gao, Guangshi Yan
Summary: The positive catalytic effect of CaO on the gasification reaction of carbon and CO2 was investigated. It was found that CaO can decrease the start temperature, end temperature, and the temperature with the maximum reaction rate of carbon-CO2 gasification. The addition of CaO also reduces the activation energy of the reaction, making it easier to occur. Furthermore, CaO modifies the structure and electrical properties of the carbon matrix, leading to increased reaction activity.
Article
Thermodynamics
Fanbao Cheng, Zhaoran Wu, Xiang Sun, Shi Shen, Peng Wu, Weiguo Liu, Bingbing Chen, Xuanji Liu, Yanghui Li
Summary: Methane hydrate, also known as flammable ice, is a clean energy source that has gained global attention as an alternative to traditional fossil fuels. The effective permeability, which is influenced by hydrate saturation and porosity changes, plays a crucial role in determining the gas production rate. This study conducted experiments to measure the effective permeability of hydrate-bearing sediments with varying hydrate saturation. The results showed that the effective permeability decreased with increasing hydrate saturation and effective stress. A formula was proposed to estimate the change in effective permeability during hydrate dissociation, and it was integrated into a thermal-hydraulic model to predict gas production under effective stress. The study provided valuable insights into compression-induced changes in effective permeability and gas/water production during hydrate dissociation.
Article
Thermodynamics
Peng Wu, Yanghui Li, Tao Yu, Zhaoran Wu, Lei Huang, Haijun Wang, Yongchen Song
Summary: In this study, depressurizing dissociation was conducted on a hydrate-bearing sandy specimen using X-ray CT under triaxial stress. The results show that hydrate dissociation starts from the hydrate-gas interface and then results in the formation of cavities among patchy clusters. As the hydrate particle dissociates to a smaller size, the dissociated water gathers on the surface of the hydrate, preventing contact between the hydrate and gas phases. Subsidence is observed even at a low isotropic stress of 1 MPa after hydrate dissociation. Furthermore, the pore system characteristics vary with decreasing hydrate saturation, and the permeability of the hydrate-bearing sediment increases exponentially with decreasing hydrate saturation and is anisotropic due to the inhomogeneity of hydrate dissociation, which can be predicted via electrical conductivity.
Article
Thermodynamics
Haijun Wang, Peng Wu, Yanghui Li, Weiguo Liu, Xuelian Pan, Qingping Li, Yufa He, Yongchen Song
Summary: This study investigated the influence of hydrate saturation and effective stress on permeability change. It found that hydrate saturation has a dominant effect on permeability dynamic change under low effective stress, while effective stress variation dominates at higher effective stresses. Additionally, compression was found to enhance heat transfer efficiency in high-saturation samples.
Article
Energy & Fuels
Zhaoran Wu, Kai Zhang, Lei Wang, Weiguo Liu, Yufa He, Qingping Li, Yanghui Li
Summary: The study investigated the effects of hydrate saturation, hydrate decomposition, effective stress, and particle type on gas permeability and sample deformation of montmorillonite samples and quartz-montmorillonite mixtures. The results showed that gas phase permeability increased with hydrate formation. The decline of sample porosity was found to be the main factor influencing the permeability failure rate under effective stress. Furthermore, the addition of sand particles significantly affected the compressibility of sediments. Overall, the content of clay and the particle size were key factors in determining the permeability damage rate during decomposition of methane hydrate, and the addition of quartz sand reduced this damage.
Article
Energy & Fuels
Yanghui Li, Jiayu Li, Zeshao You, Peng Wu, Yong Qu, An Zhang, Xiang Sun, Yongchen Song
Summary: Natural gas hydrate is a clean energy source with high density and considerable reserves. This study focuses on the mechanical behavior of cemented hydrate-bearing sediments and reveals the effect of cementation on their properties. Through numerical simulation tests, it is found that cementation improves the strength and stiffness of the sediments, while the presence of hydrates mainly enhances stiffness. The particle-scale investigation shows that increasing confining pressure and hydrate cementation limit slip and rearrangement of sand particles, leading to strengthened strength. Shear band formation is related to cementation failure.
GEOMECHANICS FOR ENERGY AND THE ENVIRONMENT
(2023)
Article
Thermodynamics
Fanbao Cheng, Xiang Sun, Yanghui Li, Xin Ju, Yaobin Yang, Xuanji Liu, Weiguo Liu, Mingjun Yang, Yongchen Song
Summary: Low gas production efficiency and high cost pose significant challenges to the commercial viability of marine gas hydrate exploitation. We propose a joint production approach that focuses on unexplored characteristics such as fluid seepage and local deformation due to interlayer interface. Our research reveals that joint production can surpass commercialization threshold by enabling gas production rates with minimum proportion of free gas exceeding 0.5 during depressurization. The presence of free gas in the reservoir promotes energy recovery and is correlated with permeability. We observe interlayer interference leading to local gas accumulation and heterogeneous permeability change within the reservoir. Geomechanically, maximum displacement occurs in the free gas layer, while simultaneous compaction and dilation are observed in different parts of the wellbore. This study provides crucial insights into the characteristics and challenges of hydrate and shallow gas joint production related to interlayer interference.
Article
Energy & Fuels
Weiguo Liu, Pengyu Chen, Peng Wu, Zeshao You, Lei Wang, Lei Huang, Shuheng Zhang, Tao Yu, Yanghui Li
Summary: The huge reserves of natural gas hydrates in the South China Sea have been proven to have commercial prospects through repeated trial production. It is crucial to understand the mechanical properties of hydrate-bearing sediments to ensure safe drilling of hydrate reservoirs. This study focused on undrained triaxial shear tests on hydrate-bearing clayed-silty sediments, revealing a strain-hardening phenomenon and positive excess pore water pressure during shear. The research also established predicting formulas based on the Mohr-Coulomb criterion, showing that the degree of consolidation affects the failure strength and the Secant Young's modulus E50.
Article
Energy & Fuels
Weiguo Liu, Mengmeng Zhang, Zaixing Liu, Chen Lang, Jingsheng Lu, Qingping Li, Yanghui Li
Summary: Hydrate formation experiments were conducted under the production conditions of the Lingshui gas field using a high-pressure rheometer, and the evolution of viscosity was investigated. The study found that the slurry viscosity changed in stages during hydrate formation, with the aggregation of hydrate particles being the main cause of the significant increase in viscosity. The more severe the temperature and pressure conditions, the faster the hydrate formation and the greater the increase in viscosity. Additionally, a critical hydrate volume fraction was proposed for a sharp increase in viscosity, which can help in predicting hydrate formation and preventing blockages in natural gas production.
Article
Chemistry, Multidisciplinary
He Li, Huiquan Liu, Changrui Shi, Jiawen Qin, Yixuan Fu, Yongchen Song, Yanghui Li, Zheng Ling
Summary: The application-oriented assembly of two-dimensional nanosheets with uniform nanochannels is crucial for fabricating advanced membranes for water treatment. In this study, a simple Meyer rod-coating approach is introduced to continuously fabricate large-size and flat MXene membranes. The fabricated MXene membranes show improved ordering and performance compared to traditional vacuum-assisted filtration methods. The proposed roll-to-roll Meyer rod-coating method also enables the fabrication of MXene-based composites.
ADVANCED MATERIALS INTERFACES
(2023)
Article
Thermodynamics
Tao Liu, Peng Wu, Zeshao You, Tao Yu, Qi Song, Yuanxin Song, Yanghui Li
Summary: Natural gas hydrate is a new energy source with enormous reserves and high carbon content. However, its exploitation can involve potentially hazardous solid-liquid-gas phase changes. Understanding the deformation behavior of sediment during hydrate dissociation is crucial for predicting the long-term stability of hydrate reservoirs. This study investigated the deformation behavior of remolded cores during thermal dissociation under anisotropic stress states. The results showed that hydrate dissociation can cause significant sediment deformation, with a deformation rate three orders of magnitude larger than before dissociation.
Article
Thermodynamics
Haijun Wang, Weiguo Liu, Peng Wu, Xuelian Pan, Zeshao You, Jingsheng Lu, Yanghui Li
Summary: Accurate understanding of fluid flow patterns in hydrate-bearing sediments is crucial for economic exploitation. This study investigates the effects of hydrate saturation, effective stress, pore pressure, and osmotic pressure on gas flow patterns. The results show that as hydrate saturation increases, gas flow transitions from viscous flow to slip flow, with the slippage effect becoming more pronounced. Effective stress affects gas permeability's sensitivity to osmotic pressure changes, particularly at lower hydrate saturation. Pore pressure has a minimal impact on gas permeability and flow pattern, while reducing osmotic pressure weakens the slippage effect. Finally, a semi-empirical permeability model is developed based on experimental data.
Article
Thermodynamics
Yanghui Li, Le Wang, Yao Xie, Peng Wu, Tao Liu, Lei Huang, Shuheng Zhang, Yongchen Song
Summary: Natural gas hydrate, as a promising new energy, has attracted wide attention in the past decades. Experimental efforts have been made to explore the mechanical characteristics of hydrate-bearing clayey sediment under stable conditions, but few studies focus on its creep characteristics during the dissociation process. This study presents triaxial creep test results of methane hydrate-bearing clayey sediment using the depressurization dissociation method, with methane hydrate-bearing sandy sediments added for comparison. The results show that depressurization has little effect on axial strain but increases volumetric strain and reduces equivalent Poisson's ratio.
Article
Energy & Fuels
Lei Wang, Shi Shen, Zhaoran Wu, Pengyu Chen, Yanghui Li
Summary: This study focuses on the investigation of undrained mechanical characteristics of hydrate-bearing fine-grained soils in order to achieve safe and efficient hydrate exploitation. The results show that temperature has a significant influence on the failure strength of clayey silts, both with and without hydrates. The presence of hydrates also affects the excess pore pressure response and effective stress paths of clayey silts. These findings contribute to a better understanding of the stability of hydrate reservoirs in the South China Sea under environmental changes and thermal injection for hydrate extraction.
Article
Engineering, Geological
Zeshao You, Yanghui Li, Haijun Wang, Xiang Sun, Shi Shen, Peng Wu, Yongchen Song
Summary: This paper combines triaxial compression tests and numerical simulations using discrete element method (DEM) to study the mechanical properties of methane hydrate-bearing sands (MHBS) at the particle scale. The study investigates the effects of hydrate saturation, cementation network, and hydrate spatial distribution on the mechanical behavior of MHBS samples. The results provide insights into the unique mechanical properties and failure mechanisms of MHBS.
Article
Thermodynamics
Weiguo Liu, Qi Song, Peng Wu, Tao Liu, Lei Huang, Shuheng Zhang, Yanghui Li
Summary: This study conducted anisotropic consolidated shearing tests to investigate the mechanical properties of hydrate-bearing clayey-silty sediment. The stress-strain curves exhibited a strain-hardening trend and volumetric contraction. The increasing consolidation stress ratio and effective confining pressure led to higher failure strength, while the internal friction angle was proportional and cohesion was inversely proportional to the consolidation stress ratio.
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)