Article
Biochemistry & Molecular Biology
Sergey O. Ilyin, Anna V. Kostyuk, Tatyana S. Anokhina, Viktoria Y. Melekhina, Danila S. Bakhtin, Sergey V. Antonov, Alexey V. Volkov
Summary: The weak point of ionic liquids is their high viscosity, limiting the maximum polymer concentration in the forming solutions. This study demonstrates that dimethyl sulfoxide (DMSO) can act as a nominal co-solvent to improve the processing of cellulose into a nanofiltration membrane. The nature of non-solvents affects the mass transfer direction and interdiffusion rate, influencing the nanofiltration characteristics of the obtained membranes.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Materials Science, Multidisciplinary
Fatma Seden Tekin, P. Zeynep Culfaz-Emecen
Summary: The effects of three different solvent systems on the preparation of cellulose acetate membranes by phase inversion were investigated. Acetone as cosolvent resulted in an asymmetric membrane morphology, while acetic acid led to a loose, almost isotropic structure. The phase inversion rate was significantly lower when acetic acid was used as cosolvent, mainly due to its high viscosity.
ACS APPLIED POLYMER MATERIALS
(2023)
Article
Materials Science, Paper & Wood
Nora S. Alrefaei, Peter J. Hine, Michael E. Ries
Summary: This study investigated the dissolution of hemp yarns in an ionic liquid and found that the dissolution process is affected by time and temperature. The yarns were observed to swell in water, and the swelling ratios of different regions were measured. Additionally, the study discovered that the growth of the coagulated region follows a diffusion process, which can be modeled mathematically.
Article
Polymer Science
Mengmeng Liu, Shoudi Tong, Zhihan Tong, Yuewen Guan, Yinan Sun
Summary: Boosting renewable resource utilization and exploiting biodegradable materials instead of petrochemical plastics is crucial and significant. Waste paper, mainly composed of cellulose, is an abundant, renewable, and biodegradable resource. Converting waste paper into cellulose-based bioplastic membranes not only reduces environmental pressure but also presents immense economic benefits.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Engineering, Chemical
Duc Hoa Tran, Mathias Ulbricht
Summary: Research and development towards sustainable chemistry involves the development of new materials and exploration of new fabrication methods. In this study, composite membranes made from biodegradable cellulose were fabricated using a simple and scalable process. The use of dimethylsulfoxide as impregnation liquid improved the membrane separation performance and lamination strength. The thickness of the barrier layer could be reduced to a few micrometers, and the membrane performance could be adjusted by varying the cellulose concentration and co-solvent fraction. The cellulose-cellulose composite membranes showed potential as a sustainable alternative material for various separations.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Biochemistry & Molecular Biology
Yiting Luo, Yizhi Li, Kun Liu, Lin Li, Wei Wen, Shan Ding, Yadong Huang, Mingxian Liu, Changren Zhou, Binghong Luo
Summary: This study reveals the effects of several internal and external parameters on the self-assembly of chitin whiskers (CHWs), including liquid crystal phase, chirality, Bouligand structure, and rheological properties. The formation of chiral liquid crystal phase and Bouligand structure largely depends on the concentration of CHWs and is affected by the aspect ratio and zeta potential of CHWs and the self-assembly time. Introducing electrolytes and changing pH significantly affect the thickness of the electrical double layer, thereby also affecting the self-assembly of CHWs. This study has important implications for the bionic design of new nature-inspired functional materials with chiral characteristic and Bouligand structure.
Article
Agricultural Engineering
Junkang Lin, Chenglong Fu, Wenchao Zeng, Dong Wang, Fang Huang, Shan Lin, Shilin Cao, Lihui Chen, Yonghao Ni, Liulian Huang
Summary: This study developed a simple strategy to fabricate cellulose acetate ultrafiltration membranes by adding methyl acetate (MAC) to N, N-dimethylacetamide (DMAc), aiming to improve their performance. The results showed that adjusting the DMAc to MAC ratio could regulate the pore morphologies of the membrane. Under optimal conditions, the pure water flux reached 188.0 L/m2h, with a BSA rejection ratio 20% higher than the control. Moreover, the anti-fouling and long-term stability of the ultrafiltration membranes were significantly improved.
INDUSTRIAL CROPS AND PRODUCTS
(2023)
Article
Multidisciplinary Sciences
Jianlei Yang, Peng Li, Xuhui Zhang, Xiaobing Lu, Qing Li, Lifei Mi
Summary: A series of experiments were conducted to investigate flow pattern transitions and concentration distribution during simultaneous pipe flow of oil-water two-phase flow. Different flow pattern characteristics were observed in the horizontal and vertical sections of the pipe under the same flow conditions. The study obtained a transition mechanism for predicting the boundary between oil-in-water (O/W) flow and water-in-oil (W/O) and empirical formulas for phase holdup based on the drift-flux model.
SCIENTIFIC REPORTS
(2021)
Article
Chemistry, Multidisciplinary
Lukas Marcos Celada, Judith Martin, Sergey V. Dvinskikh, Peter Olsen
Summary: Biopolymers, especially cellulose, play a vital role in transitioning to a circular economy and reducing reliance on fossil fuels. However, modifying cellulose hydroxyls is a challenge due to the similarity of their chemical features with water. To address this, we developed bio-based ionic liquids that can activate cellulose without disturbing its crystalline ordering. One specific ionic liquid showed high activation in heterogeneous conditions, resulting in over 30% conversion of cellulose hydroxyls. This work opens new perspectives for cellulose derivatization while maintaining sustainability.
Article
Engineering, Chemical
Hong-Li Yang, Min-Hsun Wu, Micah Belle Marie Yap Ang, Chi-Lan Li, Hui-An Tsai, Kueir-Rarn Lee
Summary: The morphology of a membrane is crucial for its separation performance, and different casting solutions lead to membranes with different morphology and pores. By incorporating carbon quantum dots and selecting suitable solvents, the physicochemical properties of the membrane can be tailored. Addition of carbon quantum dots and different solvents increases surface porosity and pore size of the membrane, while decreasing skin layer thickness.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2023)
Article
Environmental Sciences
Imran Khan Swati, Qazi Sohaib, Shuyun Cao, Mohammad Younas, Dan Liu, Jianzhou Gui, Mashallah Rezakazemi
Summary: Four ionic liquids were synthesized for the separation of gases CO2/N-2 and CO2/CH4 through supported ionic liquid membranes (SILMs), with [BSmim][tos] showing the highest solubility coefficient and permeability, as well as the highest selectivity values. The ILs synthesized for this work can be ranked as [BSmim][tos] > [BSmpy][tos] > [Bmim][Cl] > [Bpy][Cl], indicating their potential use for CO2 separation through SILMs.
Article
Water Resources
Ting He, Xiaogang Li, Qian Wang, Yue Zhou, Xiaozu Wang, Zhaohui Wang, Naser Tavajohi, Zhaoliang Cui
Summary: In this study, the ionic liquid 1-butyl-3-methylimidazolium tetrafluoroborate was successfully used as a single solvent in preparing high-performance PVDF membranes through the N-TIPs method. By adjusting the quenching temperature and additive content, PVDF membranes with a narrow pore size distribution and high flux were obtained.
APPLIED WATER SCIENCE
(2022)
Article
Materials Science, Paper & Wood
Yunhao Liang, James E. Hawkins, Michael E. Ries, Peter J. Hine
Summary: This study investigated the dissolution of cotton fibres in the ionic liquid [C2mim][OAc], showing that the resulting coagulated fraction had a crystal structure predominantly of cellulose II. Despite differences in growth patterns of the coagulated fraction for three distinct fibre arrangements, all could be shifted to form master curves using Time-Temperature Superposition, with very similar activation energies determined.
Review
Materials Science, Paper & Wood
Katherine S. Lefroy, Brent S. Murray, Michael E. Ries
Summary: Microgel particles, particularly cellulose microgels, have shown promise as alternative emulsion stabilisers with environmental advantages. The ability of microgels to swell and rearrange on interfaces makes them suitable for long-term stabilization in various industries. However, challenges such as cellulose insolubility and surface activity hinder their full potential as emulsion stabilisers.
Article
Polymer Science
Zhen Xu, Qiwen Zhou, Lixiang Wang, Guangmei Xia, Xingxiang Ji, Jinming Zhang, Jun Zhang, Haq Nawaz, Jie Wang, Jianfeng Peng
Summary: Utilizing used paper cups to produce cellulose-based films with good thermal property, hydrophobicity, and mechanical strength, demonstrates their potential as packaging materials, providing a solution for recycling and valorization of waste paper cups.
Article
Green & Sustainable Science & Technology
Mert Erkanli, Levent Yilmaz, P. Zeynep Culfaz-Emecen, Ulku Yetis
JOURNAL OF CLEANER PRODUCTION
(2017)
Article
Engineering, Chemical
Prity Bengani-Lutz, Ruken Dilara Zaf, P. Zeynep Culfaz-Emecen, Ayse Asatekin
JOURNAL OF MEMBRANE SCIENCE
(2017)
Article
Engineering, Chemical
Hazal Yucel, P. Zeynep Culfaz-Emecen
JOURNAL OF MEMBRANE SCIENCE
(2018)
Article
Engineering, Chemical
F. M. Sukma, P. Z. Culfaz-Emecen
JOURNAL OF MEMBRANE SCIENCE
(2018)
Article
Nanoscience & Nanotechnology
Canan Aksoy, Papatya Kaner, Ayse Asatekin, P. Zeynep Culfaz-Emecen
ACS APPLIED MATERIALS & INTERFACES
(2019)
Article
Engineering, Chemical
Kubra Konca, P. Zeynep Culfaz-Emecen
JOURNAL OF MEMBRANE SCIENCE
(2019)
Review
Engineering, Chemical
Suzana P. Nunes, P. Zeynep Culfaz-Emecen, Guy Z. Ramon, Tymen Visser, Geert Henk Koops, Wanqin Jin, Mathias Ulbricht
JOURNAL OF MEMBRANE SCIENCE
(2020)
Review
Chemistry, Physical
Emre Bukusoglu, Harun Koku, Pinar Zeynep Culfaz-Emecen
CURRENT OPINION IN COLLOID & INTERFACE SCIENCE
(2020)
Article
Nanoscience & Nanotechnology
Ceren Kocaman, Emre Bukusoglu, P. Zeynep Culfaz-Emecen
Summary: The study demonstrated that CNCs aligned in the direction of flow under high shear rate, forming a nematic order which improved the rejection properties of ultrafiltration membranes. By controlling the shear rate, the order parameter of CNCs could be adjusted, affecting the membrane's rejection performance towards different molecules.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Correction
Nanoscience & Nanotechnology
Ceren Kocaman, Emre Bukusoglu, P. Zeynep Culfaz-Emecen
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Engineering, Chemical
Aygen Savas-Alkan, P. Zeynep Culfaz-Emecen
Summary: Solvent recycling and reuse are crucial for the sustainability of the chemical industry and circular economy. This study focuses on the fabrication of cellulose ultrafiltration membranes and their application in recovering propylene glycol methyl ether acetate (PGMEA) from SU-8 photolithography. The cellulose membranes were able to reject SU-8 with high efficiency at 80% permeate recovery.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Engineering, Chemical
Ceren Kocaman, Emre Bukusoglu, P. Zeynep Culfaz-Emecen
Summary: Precise control over membrane performance can be achieved by tuning fabrication parameters, such as ionic strength and pH of suspensions, as well as the alignment and morphology of nanocrystals. The rejection and separation efficiency of the membranes can be adjusted by altering the electrostatic interactions between nanocrystals during deposition.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
Fatma Seden Tekin, P. Zeynep Culfaz-Emecen
Summary: The effects of three different solvent systems on the preparation of cellulose acetate membranes by phase inversion were investigated. Acetone as cosolvent resulted in an asymmetric membrane morphology, while acetic acid led to a loose, almost isotropic structure. The phase inversion rate was significantly lower when acetic acid was used as cosolvent, mainly due to its high viscosity.
ACS APPLIED POLYMER MATERIALS
(2023)
Article
Chemistry, Applied
Fatma Calili, Papatya Kaner, Grace Aro, Ayse Asatekin, P. Zeynep Culfaz-Emecen
REACTIVE & FUNCTIONAL POLYMERS
(2020)
Article
Engineering, Chemical
Qing Han, Mengqing Shi, Linkai Han, Di Liu, Mingwei Tong, Yuxin Xie, Zhonghua Xiang
Summary: Developing highly efficient bifunctional oxygen electrocatalysts is crucial for zinc-air flow batteries. Metal-organic frameworks (MOFs) and covalent organic polymers (COPs) have emerged as promising alternatives due to their designable and controllable atomic-level structures. However, their catalytic performances are limited by conductivity and catalytic activity. In this study, nanosheet FeNi-MOF and iron phthalocyanine rich COP hybrid materials are assembled through the pi-pi stacking effect to create highly efficient bifunctional electrocatalysts. The resulting catalyst exhibits superior catalytic performance and stability, making it a promising candidate for zinc-air flow batteries.
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Engineering, Chemical
Daria Grigorash, Dmytro Mihrin, Rene Wugt Larsen, Erling H. Stenby, Wei Yan
Summary: The article introduces a new approach to describe the cross-association between molecules, allowing for the simulation of weakly bound molecular complexes with different conformations in mixtures. By incorporating this approach into the equation of state, accurate predictions of vapor-liquid equilibrium and liquid-liquid equilibrium can be made. The new method is validated through experiments on alcohol and acid mixtures, with the results compared to experimental data, demonstrating its accuracy and reliability.
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Engineering, Chemical
Mohammed Al-Sharabi, Daniel Markl, Vincenzino Vivacqua, Prince Bawuah, Natalie Maclean, Andrew P. E. York, Axel Zeitler
Summary: This study used terahertz pulsed imaging to investigate the transport process of different solvents into ceramic catalytic materials. The results showed that the heating rate of the samples influenced the water transport rate, while the viscosity of 1-octanol slowed down its transport.
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Engineering, Chemical
Chukwunonso Anyaoku, Sati Bhattacharya, Rajarathinam Parthasarathy
Summary: This study aimed to enhance understanding of settling dynamics in viscoelastic fluids by developing a semi-empirical correlation and a dimensionless ratio, which accurately described the characteristics of settling suspensions.
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Engineering, Chemical
Antti I. Koponen, Janika Viitala, Atsushi Tanaka, Baranivignesh Prakash, Olli-Ville Laukkanen, Ari Jasberg
Summary: This study focuses on the development of foam application chemicals for the paper and board industry. The research explores the rheology of the polyvinyl alcohol foam used in the process. Measurements were conducted to determine the foam viscosity and slip flow. The results suggest that slip flow contributes significantly to the total flow rate, and the obtained viscosity and slip models provide a solid foundation for industrial processes.
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Engineering, Chemical
Dalei Sun, Jinghui Cai, Yating Yang, Zhiwu Liang
Summary: In this study, Fe-doped alpha-Bi2O3 catalysts with different Fe/Bi molar ratios were synthesized and utilized in the carbonylation of isobutyl amine with CO2. The results showed that Fe doping significantly enhanced the catalytic abilities of alpha-Bi2O3.
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Engineering, Chemical
Yuan Tian, Xinxin Wang, Yanrong Liu, Wenping Hu
Summary: This paper predicts the solubility of nitrogen gas in ionic liquids (ILs) using two quantitative structure-property relationship (QSPR) models. By combining machine learning methods and ionic fragments contribution method, the accuracy and reliability of the prediction models are improved.
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Engineering, Chemical
Liwang Wang, Wei Liu, Pan Yang, Yulong Chang, Xiaoxu Duan, Lingyu Xiao, Yaoming Hu, Jiwei Wu, Liang Ma, Hualin Wang
Summary: This study investigates the effective phase interfacial area (ae) of hydro-jet cyclones at different injection angles. The results show that a 45 degrees upward incidence angle yields the most favorable flow field characteristics for efficient mass transfer. The significant enhancement in ae of the hydro-jet cyclones offers the advantage of reducing equipment volume and cost savings.
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Engineering, Chemical
Chuanjun Wu, Jiangzhi Chen, Jiyue Sun, I-Ming Chou, Shenghua Mei, Juezhi Lin, Lei Jiang
Summary: In this study, the solubility of H2S hydrate in water was measured using Raman spectroscopy. The results showed that the solubility increases with temperature under certain equilibrium conditions, and the solubility also depends on pressure and temperature under different equilibrium conditions. A thermodynamic model based on the van der Waals-Platteeuw theory was developed to predict the solubility, demonstrating its accuracy.
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Engineering, Chemical
Lorenzo Brivio, Serena Meini, Mattia Sponchioni, Davide Moscatelli
Summary: This study investigates the influence of three main parameters and proposes a kinetic model to predict the optimal operating conditions for high yield of dimethyl terephthalate (DMT) in the chemical recycling process of polyethylene terephthalate (PET).
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Engineering, Chemical
Hongju Lin, Fanhui Liao, Yanchang Chu, Mingyu Xie, Lun Pan, Yuanyuan Wang, Lijian Leng, Donghai Xu, Le Yang, Gangfeng Ouyang
Summary: A honeycomb NiCo/C-Na catalyst with a micro-meso-macroporous structure has been fabricated and shown to have significantly higher catalytic activity for the decarboxylation of fatty acids. It also proves to be efficient in upgrading sludge HTL bio-crude, resulting in a biofuel with decreased viscosity and increased density.
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Engineering, Chemical
Xiaoxian Li, Rui Li, Min Lin, Mingde Yang, Yulong Wu
Summary: A series of coated non-noble metal porous carbon catalysts were synthesized and applied to the aqueous-phase deoxygenation of algal bio-oil. One of the catalysts showed excellent deoxygenation selectivity and catalytic activity at 250 degrees C. The catalyst exhibited good hydrothermal stability and the reaction mechanism was proposed based on product analysis and active site analysis.
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Engineering, Chemical
M. V. Chudakova, M. V. Popov, P. A. Korovchenko, E. O. Pentsak, A. R. Latypova, P. B. Kurmashov, A. A. Pimenov, E. A. Tsilimbaeva, I. S. Levin, A. G. Bannov, A. V. Kleymenov
Summary: A series of catalysts with different potassium contents were prepared using solution combustion synthesis and characterized using various techniques. The results showed that the potassium content affected the phase composition and texture of the catalysts. The addition of a small amount of potassium resulted in a change in particle size distribution, leading to higher hydrogen yield. The Ni-1%K2O/Al2O3 catalyst exhibited the highest hydrogen yield at temperatures of 675 and 750 degrees Celsius.
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Engineering, Chemical
Aliakbar Roosta, Nima Rezaei
Summary: In this study, we modified the electrolyte cubic plus association equation of state (e-CPA EoS) and integrated it with two electrical conductivity models to estimate the electrical conductivity of 11 monovalent electrolyte solutions in water. The modified e-CPA model demonstrated better performance and the hybridization with electrical conductivity models resulted in two predictive models for estimating the electrical conduction of dilute and concentrated electrolyte solutions. These predictive models showed relative average percentage deviations (AARD) of 11.15% and 13.87% over wide ranges of temperature and electrolyte concentration.
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Engineering, Chemical
Haoren Niu, Jianzheng Wang, Qingzhu Jia, Qiang Wang, Jin Zhao, Fangyou Yan
Summary: A study developed two quantitative structure-property relationship models for the complexation performance of alpha- and beta-cyclodextrins and validated their stability and predictive ability through internal and external validation. The models showed robustness and satisfactory performance, as demonstrated by the experimental results and model validations. These models can effectively predict the binding constants between cyclodextrins and various types of molecules, providing valuable tools for cyclodextrin design.
CHEMICAL ENGINEERING SCIENCE
(2024)
