Article
Chemistry, Physical
Zsofia Vargane Arok, Szilard Saringer, Dora Takacs, Coline Bretz, Adam Juhasz, Istvan Szilagyi
Summary: The study investigates the structural and rheological properties of a partially hydrolyzed polyacrylamide (FLOPAAM 3630S) in a wide range of salinity relevant to existing oil reservoir conditions. It is found that macromolecular solutions are present at low polymer concentrations and/or elevated salt levels, while gelation occurs at high FLOPAAM 3630S doses at low salinity. The driving force behind this transformation is determined to be hydrophobic intermolecular interactions. These findings provide new insights for the design of efficient enhanced oil recovery processes in oil reservoirs with varying salt levels.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Energy & Fuels
Xiaoluan Yu, Hao Niu, Hua Li, Chunan Du, Zhiyong Song, Debin Kong, Weiyao Zhu
Summary: The rheology of a partially hydrolyzed polyacrylamide (HPAM) solution in polymer flooding is affected by sulfide ions, leading to viscosity loss and impacting oil recovery. Microscopic observations and visualization experiments combined with Micro-PIV provide insights into the changes in polymer morphology and pore scale flow fields induced by sulfide ions.
Article
Materials Science, Multidisciplinary
Gang Lu, Jikuan Zhao, Shaoqi Li, Yuquan Chen, Chunfang Li, Youqi Wang, Dongxiang Li
Summary: Four copolymers including HPAM, z-HPAM, p-HPAM, and zp-HPAM were prepared and tested for viscosity under high temperature and high salinity conditions, with zp-HPAM showing the best salt and temperature resistance.
FRONTIERS IN MATERIALS
(2021)
Article
Chemistry, Physical
Jianping Xu, Yuanda Yuan, Zhen Feng, Feng Liu, Zhe Zhang
Summary: This paper uses molecular dynamics simulation method to study the transportation behavior of polymers in nanopores and describes their intera-ction, diffusion and adsorption behaviors, and viscoelastic properties, providing a theoretical basis for improving oil recovery in oilfields.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Polymer Science
Mohammed Abdelfetah Ghriga, Seif El Islam Lebouachera, Nadjib Drouiche, Bruno Grassl
Summary: The viscoelastic behavior of a PEI crosslinked polymer gel prepared with a low hydrolysis/high molecular weight PHPA was investigated through dynamic shear measurements. Various parameters such as reactants concentrations, polymer's molecular weight, curing temperature, presence of inorganic salts, and solution's initial pH were systematically studied. The final gel strength varied with different parameters, with stronger gels formed at pH around 10 due to the asymmetrical effect of pH on the reactants.
JOURNAL OF POLYMER RESEARCH
(2021)
Article
Engineering, Chemical
Guozhen Liu, Yanan Guo, Baochun Meng, Zhenggang Wang, Gongping Liu, Wanqin Jin
Summary: This study presents the design and engineering of a two-dimensional Ti3C2Tx MXene membrane supported on an asymmetric polymeric hollow fiber substrate for water desalination. The membrane demonstrates fast water permeation and efficient rejection of divalent ions through the synergistic effect of surface hydrophilicity, electrostatic repulsion, and size sieving effect of interlayer channels.
CHINESE JOURNAL OF CHEMICAL ENGINEERING
(2022)
Article
Environmental Sciences
Shatha Al-Kindi, Saif Al-Bahry, Yahya Al-Wahaibi, Usman Taura, Sanket Joshi
Summary: Polyacrylamide is widely used in oil fields to enhance oil recovery, but it also produces a large quantity of toxic wastewater. The challenge is to remove or degrade polyacrylamide in an environmentally safe manner. Biodegradation with the aid of microbes is considered an efficient and environmentally friendly solution.
ENVIRONMENTAL MONITORING AND ASSESSMENT
(2022)
Article
Polymer Science
Shakhnoza Kuldasheva, Aziza Abdikamalova, Izzat Eshmetov, Dilmurod Abdurahimov, Aysha Sharipova, Gulbahor Nortojiyeva
Summary: The synthesis of polyacrylamide and a copolymer of acrylamide and maleic acid was studied under various conditions. The alkaline hydrolysis process of the synthesized polymers was also investigated. It was found that the highest yields of a high-molecular product can be achieved through radical polymerization at a temperature of 40°C and pH of about 2.2. The copolymerization reaction of acrylamide and maleic acid required a longer duration and a molar ratio of 7:1, resulting in a copolymer with higher molecular weight values.
Article
Multidisciplinary Sciences
Hashem Hosseini, Sajjad Sharifat, Saeid Norouzi-Apourvari, Mahin Schaffie
Summary: This study investigated the factors affecting the Na-silicate sealant gel system, including gelation time, syneresis, activator concentrations, and temperature. Results showed that adding PHPA successfully delayed syneresis, while changes in activator concentrations and temperature impacted gelation time.
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
(2022)
Article
Polymer Science
Thomas G. Floyd, Satu Hakkinen, Stephen C. L. Hall, Robert M. Dalgliesh, Anne-Catherine Lehnen, Matthias Hartlieb, Sebastien Perrier
Summary: Cationically charged bottlebrush copolymers were synthesized through hydrolysis of PEtOx, showing control over polymerization up to backbone DP 50. Adjusting charge content was possible by changing hydrolysis reaction time, with structural analysis revealing a cylindrical topology of the copolymers.
Article
Chemistry, Inorganic & Nuclear
Vladimir Bakhmutov, Hannah F. Drake, Hong-Cai Zhou
Summary: Characterization of partially hydrolyzed α-zirconium phosphates revealed the presence of D3O+ ions stabilized by hydrogen bonds on the surface, which is an unprecedented observation after the loss of surface phosphate groups.
INORGANIC CHEMISTRY
(2022)
Article
Energy & Fuels
Long Wang, Jianguang Wei, Yinghe Chen, Shihua Jia, Yiling Wang, Xudong Qiao, Long Xu
Summary: This study investigates the flow and injection performance of a partially hydrolyzed polyacrylamide (HPAM) solution in a medium and low permeability oil reservoir. The effects of molecular weight, concentration, and core permeability are studied, as well as the influence of anionic-nonionic surfactant (ANS) on the injectability of the HPAM solution. It is found that high molecular weight and low core permeability hinder the injectability of HPAM solutions, while the addition of ANS improves injectability by reducing the critical value of injectability and decreasing flow pressure gradient. This research provides new insights and a theoretical basis for improving the injectability of HPAM solutions and the application of polymer flooding and polymer/surfactant binary flooding systems in medium and low permeability reservoirs.
Article
Chemistry, Multidisciplinary
V. A. Lipin, T. A. Poshvina, Yu. A. Petrova
Summary: The sorption capacity of polyampholytic hydrogels prepared from partially hydrolyzed polyacrylamide and various diamines with respect to divalent metal ions was studied. The synthesized polyampholytic hydrogels exhibited amine numbers ranging from 85 to 93 mg of HCl per gram. The polymer network parameters and the mixing energies with water were calculated (0.835-1.07 kJ mol(-1)) and correlated with the sorption capacity of the hydrogels. The hydrogel based on partially hydrolyzed polyacrylamide and 1,4-diaminobutane showed the highest sorption capacity. The experimental data on equilibrium sorption were accurately described by the Langmuir model, indicating coordination compounds formation between divalent metal ions and polyampholytic hydrogels.
RUSSIAN CHEMICAL BULLETIN
(2023)
Article
Chemistry, Applied
Ali Rahmatpour, Parvaneh Soleimani, Ahmad Mirkani
Summary: In this study, an eco-friendly semi-interpenetrating polymer network (IPN) nanocomposite hydrogel was successfully synthesized, which exhibited enhanced adsorption performance and stability. The adsorption mechanism was described by the Langmuir isotherm model.
REACTIVE & FUNCTIONAL POLYMERS
(2022)
Article
Chemistry, Physical
Mohammad Reza Mohammadpour, Shadi Hassanajili
Summary: The effect of modified nanoparticles on the thermal stability and rheological properties of polymers was investigated. The results showed that the modified nanoparticles could improve the rheological properties and dispersion of the polymer, and reduce thermal degradation.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Engineering, Chemical
Arslan Ahmad, Sam Rutten, Martijn Eikelboom, Luuk de Waal, Harry Bruning, Prosun Bhattacharya, Albert van der Wal
SEPARATION AND PURIFICATION TECHNOLOGY
(2020)
Article
Chemistry, Physical
Victor Ajao, Remco Fokkink, Frans Leermakers, Harry Bruning, Huub Rijnaarts, Hardy Temmink
Summary: The study found that microbial extracellular polymeric substances (EPS) from wastewater exhibit good flocculation performance in single clay systems, but mixed EPS is more effective in dual clay systems. The LMW and MMW fractions of EPS adsorbed to the surface first, while HMW-EPS attached more slowly but with stronger irreversibility.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Biochemistry & Molecular Biology
Paulina A. Sosa-Fernandez, Jan W. Post, Harrison L. Nabaala, Harry Bruning, Huub Rijnaarts
Article
Chemistry, Physical
P. A. Sosa-Fernandez, S. J. Miedema, H. Bruning, F. A. M. Leermakers, J. W. Post, H. H. M. Rijnaarts
Summary: The hypothesis states that cation exchange membranes (CEMs) face fouling issues when used in desalination of wastewater from the oil and gas industry, affecting their performance. Fouling experiments were conducted on commercial CEMs with varying solutions, demonstrating that fouling primarily occurs in the presence of polyelectrolytes. The study found that changing the direction of current could remove the polyelectrolyte fouling layer, with precipitation occurring on the opposite side of the membrane.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Environmental Sciences
Yu Lei, Alette Langenhoff, Harry Bruning, Huub Rijnaarts
Summary: This study investigated the removal of micropollutants using nine different support matrix materials in constructed wetlands. The combination of bark and biochar showed the best performance in removing micropollutants.
Article
Engineering, Chemical
P. A. Sosa-Fernandez, T. M. Loc, M. Andres-Torres, M. Tedesco, J. W. Post, H. Bruning, H. H. M. Rijnaarts
Summary: The energy for desalination and pumping both contribute to the total energy consumption of electrodialysis (ED). The contribution varies depending on factors such as salinity, viscosity of the feed, and spacer geometry and thickness. Pumping energy is usually minimal compared to desalination energy, but may account for a larger proportion under specific conditions such as using thin spacers and/or high viscosity feeds.
Article
Engineering, Chemical
Pradip Saha, Yicheng Wang, Mahsa Moradi, Robert Bruninghoff, Gholamreza Moussavi, Bastian Mei, Guido Mul, Huub H. M. Rijnaarts, Harry Bruning
Summary: The study compared various advanced oxidation processes for treating cooling tower blowdown water containing organic compounds and chlorides, and found that heat-activated persulfate oxidation (PS) was the most effective method for removing organic compounds and generating the least amount of chlorinated byproducts.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Environmental Sciences
Pradip Saha, Jiamin Wang, Yinong Zhou, Livio Carlucci, Adriaan W. Jeremiasse, Huub H. M. Rijnaarts, Harry Bruning
Summary: Electrochemical oxidation is an effective technique for treating persistent organic pollutants. This study investigated the influence of electrolyte composition on the formation of active sulfate species, degradation of a model organic compound, and distribution of chlorinated by-products. The results showed that sulfate-enriched electrolyte compositions were beneficial for the electrochemical oxidation of biorecalcitrant organic pollutants.
ENVIRONMENTAL RESEARCH
(2022)
Article
Green & Sustainable Science & Technology
Thomas Wagner, Pradip Saha, Harry Bruning, Huub Rijnaarts
Summary: This study aimed to assess the removal of different chemical fractions from cooling tower water using an innovative pilot-scale technology train. The experiments showed that the treatment-train was capable of reaching the desired water quality, but improvements are needed in terms of water recovery, nanofiltration membranes, and prevention of unwanted by-product formation during electrochemical oxidation.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Biochemistry & Molecular Biology
Rick van Lin, Paulina A. Sosa Fernandez, Tymen Visser, Patrick de Wit
Summary: Increasing consumption of plastics leads to environmental problems due to waste generated from production. Chemical recycling methods, like pyrolysis, offer potential for increased recycling rates and reduced reliance on fossil fuels. Organic solvent nanofiltration shows promise for separating valuable components from pyrolysis oil derived from plastic waste with low energy consumption.
Article
Engineering, Environmental
Marinus J. Moerland, Harry Bruning, Cees J. N. Buisman, Miriam H. A. van Eekert
Summary: The study found that under high temperature conditions, the concentration of ammonia in its toxic form was below the inhibitory threshold due to the influence of ionic strength and organic matter interactions, resulting in a lower level of inhibition on methane fermentation.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Engineering, Chemical
J. M. Wreyford, J. E. Dykstra, K. Wetser, H. Bruning, H. H. M. Rijnaarts
Article
Environmental Sciences
Pradip Saha, Harry Bruning, Thomas Wagner, Huub H. M. Rijnaarts
Article
Engineering, Chemical
Jiawei Hou, Shixuan Guo, Nigel Graham, Wenzheng Yu, Kening Sun, Ting Liu
Summary: A novel 2D composite membrane based on r-HGO and MXene materials was developed, demonstrating exceptional performance for water treatment in terms of permeability, pollutant rejection, and physical stability. The optimization of preparation conditions and material proportions can result in high water flux and efficient removal of pollutants.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Retraction
Engineering, Chemical
Chang Liu, Jinghong Liu, Liang Zhu, Shanfu Tang, Huixin Xiong
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Rui Gao, Caihong Liu, Andreia F. Faria, Qiang He, Chun Yang, Jun Ma
Summary: A novel copolymer architecture has been developed to address biofouling concerns in thin-film composite (TFC) membranes by integrating anti-fouling, bactericidal, and fouling-release functions. The multifunctional membrane demonstrates promising anti-adhesive properties, self-cleaning ability, and high flux recovery rate.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Alexander T. Bridge, Noah P. Wamble, Matthew S. Santoso, Joan F. Brennecke, Benny D. Freeman
Summary: This study demonstrates the reproducible preparation of high-flux defect-free asymmetric gas separation membranes using Cyrene(TM) as a majority dope formulation component. By adjusting the volume ratios of Cyrene(TM) and THF, as well as the concentrations of Matrimid(R) and the dry step time, optimal membrane performance is achieved.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Alessandra Imbrogno, Han Ya Lin, Babak Minofar, Andrea Iris Schaefer
Summary: In this study, a composite nanofiber membrane containing cross-linked beta-cyclodextrin-epichlorohydrin was prepared and evaluated for the removal of steroid hormones. The results showed that the membrane had high adsorption capacity and the ability to form a specific inclusion complex interaction with the hormones, indicating its potential application in hormone removal.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Bora Shin, Jaewon Shin, Yanuar Chandra Wirasembada, Ki Young Park, Jinwoo Cho
Summary: This study develops a mathematical model to estimate the initial flux of volatile fatty acids in the direct contact membrane distillation process. It identifies the parameters affecting the flux and their relationship with pH.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Yi-Jui Yeh, Jr Rong Liou, Wei Lin, Kuo-Lun Tung, Wei-Hung Chiang
Summary: This study demonstrates an effective plasma engineering method to create nitrogen-doped graphene quantum dot (NGQD)-inorganic nanocomposites for tunable molecular separation. The composite materials show high separation efficiency and controllable nanopore structures, making them potentially valuable for various applications.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Horacio Lopez-Marques, Kristofer L. Gleason, Manuel Aguilar-Vega, Rita Sulub-Sulub, J. Ehren Eichler, Hyeonji Oh, C. Buddie Mullins, Benny D. Freeman, Manish Kumar
Summary: In this study, water transport properties in Carbon Molecular Sieve (CMS) membranes were investigated. It was found that membranes synthesized at different pyrolysis temperatures exhibited varying water permeabilities. Compared to other polymeric materials, CMS membranes showed high water permeability, indicating potential for dehydration applications.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Dmitry A. Alentiev, Roman Yu. Nikiforov, Marina A. Rudakova, Danil P. Zarezin, Maxim A. Topchiy, Andrey F. Asachenko, Nikolay A. Belov, Maxim Bermeshev
Summary: A series of new norbornene-type monomers containing linear and branched substituents were synthesized, and robust thin membranes were prepared by vinyl-addition polymerization. Gas separation performance for the synthesized polymers was evaluated, and the structure of substituent side chains was found to significantly affect gas permeability and CO2 facilitated transport.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Lei Yan, Qi Zhang, Ze Zhang, Gui-Jie Li, Yi Jin, Xin-Lin Zhang, Yan-Yun Sun
Summary: In this study, a continuous, stable and fast ion transport channel was established through in-situ guided cross-linking of zinc alginate hydrogels on a porous membrane, overcoming the negative pore effect and effectively inhibiting the dendrite growth of zinc anodes and interfacial side reactions.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Yuqing Zhang, Ailing Zhang, Huiyang He, Yuting Fan, Yongjiang Li, Song Wang, Sanxi Li
Summary: The Langmuir-Blodgett self-assembly process is used to create an ordered SPEEK membrane, which enhances the proton conductivity by three times compared to conventional solution casting method.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Hasan Ismaeel, David Gibson, Eleonora Ricci, Maria Grazia De Angelis
Summary: In this study, a machine learning-based group contribution method (ML-GC) was developed to predict pure polymer parameters and successfully applied to predict gas solubility and gas solubility isotherms in glassy polymeric membranes. The model showed satisfactory performance on a small dataset, but has the potential to provide more accurate predictions for a wider range of polymers as more data becomes available.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Yi Ji, Yu Sun, Huilin Li, Qiang Fu, Yan Zhang
Summary: Previous studies have shown that vibration- or rotation-based techniques can effectively mitigate fouling during membrane filtration. However, it is difficult to incorporate these techniques with spiral wound modules (SWMs) widely used in water and wastewater treatment. This study developed a prototype membrane system to accommodate angular vibrations with a modified SWM, and experimental results showed that applying angular vibrations can effectively control algal fouling in an SWM with lower energy consumption compared to traditional methods.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Lakshmeesha Upadhayaya, Abaynesh Yihdego Gebreyohannes, Muhammad Wakil Shahzad, Usman T. Syed, Sandra L. Aristizabal, Radoslaw Gorecki, Suzana P. Nunes
Summary: Increasing temperatures worldwide pose a significant health risk, exacerbated by high humidity. Conventional air conditioners contribute heavily to carbon dioxide emissions, with dehumidification being a major factor. Membrane-based dehumidification system offers energy efficiency and non-toxic water vapor removal. This study demonstrates a membrane dehumidification system with polymeric hollow fibers coated with a green polyphenol coating, showing remarkable water vapor transport rate and selectivity. Long-term testing reveals minimal decline in vapor transport and a 4-5 times higher coefficient of performance (COP) compared to conventional dehumidifiers, making it a highly competitive, energy-saving device with reduced emissions and a smaller footprint.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Zhengzhong Zhou, Xue Zhu, Yi Yuan, Shaoqiang Wang, Xiaoshan Meng, Taoli Huhe, Qian Wang
Summary: In this study, lignin, a biomass material, was chemically modified and utilized in the interfacial polymerization process to improve the performance of nanofiltration membranes. The modified membranes showed enhanced hydrophilicity and anti-fouling properties, and the optimization of membrane pore size increased permeability. The study also demonstrated the potential application of the membranes in biogas slurry valorization.
JOURNAL OF MEMBRANE SCIENCE
(2024)