Article
Engineering, Chemical
Tom R. C. Van Assche, Gille R. Wittevrongel, Valentina Lozano Betancur, Lala Muslumzada, Joeri F. M. Denayer
Summary: This paper proposes a graphical method to obtain adsorbed amounts from breakthrough curves, which can be used in isothermal, diluted adsorption breakthrough experiments. By using an integrated capacity curve, additional equilibrium points can be extracted beyond the final state without the need for a multicomponent model.
CHEMICAL ENGINEERING SCIENCE
(2023)
Article
Biotechnology & Applied Microbiology
Chengxian Liu, Cheng Zhao, Xiaomei Hu, Yun Zou, Junge Yun, Xueying Jiang, Ninghan Wei, Zhangfa Tong, Zhihang Chen
Summary: The study focused on providing simple and efficient synthetic routes for meso-microporous ZSM-5. The newly prepared ZSM-5 molecular sieve showed controllable mesoporous channels, which were superior to traditional ZSM-5. Compared to traditional ZSM-5, the toluene adsorption performance of meso-microporous ZSM-5 was effectively improved.
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
(2021)
Article
Nanoscience & Nanotechnology
Dingcheng Liang, Fengqin Yu, Qiang Xie, Qingping Chen, Yuan Liu, Yuhua Zheng, Keping Zhu, Zhijun Zhang, Jun Liu, Xiao Zhu, Jinchang Liu, Zihan Zhu
Summary: In this study, zeolite/AC composites were synthesized as efficient and safe adsorbents for VOCs. The binding energy between zeolite and AC was increased after modification, resulting in improved adsorption capacity. The composite also showed enhanced flame resistance.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Engineering, Environmental
Yang Rong, Cong Pan, Kexin Song, Jong Chol Nam, Feng Wu, Zhixiong You, Zhengping Hao, Jinjun Li, Zhongshen Zhang
Summary: In this study, hydrophobic bamboo-derived porous graphitized carbons (BPGCs) were prepared and showed high adsorption capacities for toluene, cyclo-hexane, and ethanol under dry conditions. Their adsorption capacities remained high for toluene and cyclohexane even at 80% relative humidity, and the uptake of ethanol increased. BPGC also exhibited faster adsorption kinetics compared to activated carbon.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Sahar Kooshki, Majid Pakizeh, Rasoul Rahimnia
Summary: New mixed matrix membranes (MMMs) of poly(styrene-butadiene-styrene) (SBS) incorporated with hydrophobic ZSM-5 zeolite (calcinated and non-calcinated) were prepared and characterized. The membranes showed improved separation performance, with an increase in temperature leading to higher permeation flux and lower separation factor. The sample with 20 wt% calcinated zeolite (C.ZSM-5) exhibited the highest separation factor.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Energy & Fuels
Hantian Li, Xishan Zhou, Tao Wang, Jiawei Wang, Yongsheng Zhang, Wei-Ping Pan
Summary: Zeolite-templated carbon (ZTC), a three dimensional ordered carbon material, was synthesized and used as an efficient adsorbent for the removal of volatile organic compounds (VOCs). The ZTC sample prepared at 600 degrees C for 7 h exhibited the largest specific surface area and the best adsorption capacity for toluene, benzene, and m-xylene. The presence of O-2, SO2, and H2O influenced the adsorption capacity of VOCs, with O-2 initially promoting the removal ability and H2O having the most inhibitory effect.
Article
Engineering, Environmental
Qingxiang Shu, Zhenhua Sun, Ganyu Zhu, Chenye Wang, Huiquan Li, Fang Qi, Qikun Zhang, Shaopeng Li
Summary: This research proposes an efficient and low-cost method for the preparation of ZSM-5 zeolite, achieving high-value utilization of coal gasification coarse slag (CGCS). By one-step microwave synthesis, the desilication solution from CGCS is used as the major source material, leading to improved crystallization rate and specific surface area of ZSM-5 zeolite. The resulting high-purity ZSM-5 zeolite exhibits good crystallinity, smooth surface, and high adsorption capacity.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2022)
Article
Engineering, Environmental
Xianfeng Li, Jian Wang, Yangyang Guo, Tingyu Zhu, Wenqing Xu
Summary: Hierarchical structure zeolites prepared by alkali modification showed enhanced adsorption and desorption properties for VOCs under humid conditions. The important parameters for p-xylene adsorption were pore diameter and Si/Al ratio, which should be optimized simultaneously for satisfactory adsorption capacity. The alkali modification not only improved the utilization efficiency of the adsorption sites, but also facilitated desorption, crucial for adsorbing materials.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Engineering, Environmental
Thomas Virdis, Christophe Walgraeve, Angelos Ioannidis, Herman Van Langenhove, Joeri F. M. Denayer
Summary: Metal-Organic Frameworks (MOFs) have been extensively researched for applications like gas storage and heterogeneous catalysis, but the study of VOCs adsorption on MOFs is still behind compared to traditional adsorbent materials. This research used innovative methods to explore VOCs adsorption on MOFs at ultra-low concentrations, finding that UiO-66 exhibited higher uptake compared to ZIF-8 and both MOFs showed preference for hydrophobic molecules.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Engineering, Environmental
Min Yan, Yang Rong, Feng Wu, Zhixiong You, Dashan Wang, Xudong Yang, Zhengping Hao, Jinjun Li, Zhongshen Zhang
Summary: Porous graphitized carbon fibers (PGCFs) with enhanced hydrophobicity were prepared by catalytic graphitization of ACFs. They showed high adsorption capacity for toluene, cyclohexane, and ethanol, and even increased adsorption of ethanol under humid conditions. The 7C electrons and high polarizability of PGCFs strengthened their interaction with non-polar organics, and capillary condensed water in mesopores acted as absorbate for polar ethanol.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Jin Chen, Wenjian Xu, Xiaolan Li, Chunqi Wang, Zhongjian Hu, Hongpeng Jia
Summary: By utilizing the adsorption capacity of USY and the energy input of EMIF technique, a highly energy-efficient system was designed to eliminate gaseous toluene in the air. The operation model involving intermittent heating and mass transfer saves a lot of energy. The bi-functional system operates flexibly between adsorption and catalytic decomposition, making it ideal for cleaning VOCs emitted from intermittent sources.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Environmental Sciences
Khim Hoong Chu
Summary: The Belter model is a theoretical tool used to correlate experimental breakthrough curves of water pollutants with similarities to the Bohart-Adams model. The original Belter model is highly symmetric, resulting in poor fits for asymmetric breakthrough curves, whereas the improved version can better accommodate a variety of curve types.
WATER AIR AND SOIL POLLUTION
(2021)
Article
Chemistry, Physical
Wei Chen, Hui Zhao, Yongjie Xue, Xiwen Chang
Summary: In this study, zeolite ceramsite containing binder was successfully applied to inhibit asphalt VOCs. The prepared zeolite ceramsite possessed high crystallinity with zeolite as the main crystal phase. The material showed a dominant pore size distribution of micropores with a size of 0.88 nm. The adsorption experiment demonstrated a significant adsorption effect of VOCs, which depended on the dosage of the material. The particulate adsorbent with a microporous structure showed better adsorption of aromatic hydrocarbons in asphalt VOCs, while aliphatic hydrocarbon molecules had higher diffusion resistance.
Article
Engineering, Environmental
Tianqiu Hong, Lin Wei, Kangping Cui, Yugang Dong, RuoLan Li, Tingting Zhang, Yixiu Zhao, Lei Luo
Summary: This study investigated the adsorption behavior and mechanism of volatile organic compounds (VOCs) emitted from the electronic industry on commercial activated carbon fibers (ACFs) in a fixed-bed column. It was found that inlet flow rate, VOCs concentration, adsorption temperature, and bed height significantly influenced the adsorption performance, and an axial dispersion model effectively predicted the adsorption process.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Engineering, Environmental
Chun-Chi Chen, Yen-Hui Huang, Shih-Min Hung, Chiaying Chen, Chi-Wen Lin, Hsi-Hsien Yang
Summary: This study evaluated the feasibility of capturing VOCs from exhaust using hydrophobic deep eutectic solvents (DESs), and found that DESs with fatty acids containing long alkyl chains achieved high absorption capacity. The hydrophobic interactions in fatty acid eutectics were critical for improving VOC absorption ability.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Environmental Sciences
Katia Gonzalez-Labrada, Romain Richard, Caroline Andriantsiferana, Hector Valdes, Ulises J. Jauregui-Haza, Marie-Helene Manero
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2020)
Article
Thermodynamics
Arley Nova-Rincon, Sabine Sochard, Sylvain Serra, Jean-Michel Reneaume
ENERGY CONVERSION AND MANAGEMENT
(2020)
Article
Thermodynamics
Isabelle Lahoud, Laurent Balland, Nicolas Brodu, Imed Ben Talouba, Nordine Mouhab, Catherine Legrand
THERMOCHIMICA ACTA
(2020)
Article
Energy & Fuels
Regis Delubac, Sylvain Serra, Sabine Sochard, Jean-Michel Reneaume
Summary: The ISORC/OPTIMISER project aims to increase the use of solar thermal energy in district heating networks. The project developed an optimization tool for sizing and operating a solar district heating network. The research formulated an economic objective function, modeled the operation of different components, and presented a solution to a multi-period optimization problem.
Article
Engineering, Chemical
Sonia Ferreira, Sabine Sochard, Sylvain Serra, Frederic Marias, Jean-Michel Reneaume
Summary: An open system based on physical adsorption phenomena with humid air and zeolite 13X is discussed for residential heat storage. A model has been developed to describe mass and heat conservation in the system using a simplified approach and local transfer properties. A parametric study on operating and design parameters is conducted to understand their effects on heat supply and concentration profiles.
Review
Energy & Fuels
Alix Untrau, Sabine Sochard, Frederic Marias, Jean-Michel Reneaume, Galo A. C. Le Roux, Sylvain Serra
Summary: This review provides a comprehensive analysis of different methodologies for improving the operation of solar thermal plants through mathematical optimization. The study classifies the various strategies for determining the optimal operational strategy based on time dependence and feedback from the plant. The review highlights the lack of real-time optimization studies and concludes that dynamic real-time optimization appears to be well-suited for handling the intermittency of solar radiation and improving the operation of solar thermal plants.
Article
Energy & Fuels
Regis Delubac, Mohammad Sadr, Sabine Sochard, Sylvain Serra, Jean-Michel Reneaume
Summary: In order to improve the integration of solar thermal in district heating networks, optimization tools that can study the sizing and operation of heating plants are necessary. The ISORC tool was used in this study to examine the sizing and coupled operation of smaller storage and solar fields with other heating sources. The formulation and methodology allowed for the easy study of different cases and situations, highlighting the importance of selecting and attributing typical days. The results showed that solar thermal covers approximately 20% of the demand, even with a daily approach, emphasizing the relevance of developing small daily storage with small solar fields.
Article
Chemistry, Physical
Matheus H. A. Aboukalam da Da Cruz, Myriam Etancelin, Frederic Marias, Jean-Michel Reneaume, Sabine Sochard-Reneaume, Sylvain Serra
Summary: This work aims to develop a method for modeling and optimizing the operation of a reference alkaline electrolysis unit in transient state using orthogonal collocation on finite elements (OCFE). The main goal is to determine the set of operating conditions that minimize processing cost while maintaining a certain hydrogen yield. The dynamic behavior of the electrolyzer components, including the electrolytic cells and separators for hydrogen and oxygen gas streams, is considered. The associated mathematical model is derived and solved to characterize the influence of transient operating parameters on the system's working and final hydrogen production.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Energy & Fuels
Alix Untrau, Sabine Sochard, Frederic Marias, Jean-Michel Reneaume, Galo A. C. Le Roux, Sylvain Serra
Summary: As renewable energies become more prevalent in the electricity grid and heating and cooling networks, the need for storage solutions is increasing. Stratified storage tanks offer a cost-effective and reliable way to store and utilize heat energy. However, accurately modeling the thermocline region in these tanks is challenging. This paper proposes a fast and accurate 1D model using orthogonal collocation to represent temperature profiles inside the tank, which is validated using real data.
Article
Chemistry, Multidisciplinary
Jie Xu, Nicolas Brodu, Boulos Youssef, Bechara Taouk
Summary: The synthesis of a greener novolac-type resin using glyoxal, upgraded bio-oil, and oxalic acid has been studied. The research demonstrated the potential of treated bio-oil products to effectively replace commercial phenol in the production of resin. The addition of biochar was found to improve the curing process by decreasing the onset temperature and activation energy.
Article
Engineering, Chemical
Fabien Marty, Sabine Sochard, Sylvain Serra, Jean-Michel Reneaume
Summary: This paper investigates the simultaneous optimization of design and operation of a geothermal plant, utilizing Mixed Integer Non-Linear Programming to determine the sizing of an Organic Rankine Cycle and the topology of a District Heating Network. A multi-objective optimization approach is used to find the best compromise solution.
CHEMICAL PRODUCT AND PROCESS MODELING
(2021)
Article
Chemistry, Multidisciplinary
Nicolas Brodu, Imed Ben Talouba, Isabelle Lahoud, Laurent Balland, Nordine Mouhab
Summary: The kinetics of RAFT polymerization of dodecyl methacrylate controlled by a trithiocarbonate as a chain transfer agent were studied through measuring thermal profiles and estimating equilibrium constants for high degree of polymerization. The influence of transfer agent concentration on polymer characteristics and the effect of reaction temperature were investigated as well, revealing that higher CTA concentration leads to decreased viscosity and more homogeneous distribution of small polymer sizes. The effect of reaction temperature on polymer characteristics is mitigated in the presence of CTA.
Proceedings Paper
Computer Science, Interdisciplinary Applications
Meziane Akchiche, Jean-Louis Beauquin, Sabine Sochard, Sylvain Serra, Jean-Michel Reneaume, Pascal Stouffs
30TH EUROPEAN SYMPOSIUM ON COMPUTER AIDED PROCESS ENGINEERING, PTS A-C
(2020)
Article
Engineering, Environmental
Thibaut Triquet, Claire Tendero, Laure Latapie, Marie-Helene Manero, Romain Richard, Caroline Andriantsiferana
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2020)