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Comparative studies on fouling of homogeneous anion exchange membranes by different structured organics in electrodialysis

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Journal of Environmental Sciences 2019年第3期31卷 218-228页

作者： Zhijuan Zhao Shaoyuan Shi Hongbin Cao Yujiao Li Bart Van der Bruggen Division of Environment Technology and Engineering CAS key Laboratory of Green Process and Engineering Beijing Research Center of Process Pollution Control State Key Laboratory of Biochemical Engineering Institute of Process Engineering Chinese Academy of Sciences University of Chinese Academy of Sciences Department of Chemical Engineering KU Leuven Zhengzhou Institute of Emerging Industrial Technology Faculty of Engineering and the Built Environment Tshwane University of Technology

Five negatively charged organic compounds with different structures, sodium methane sulfonate(MS), sodium benzene sulfonate(BS), sodium 6-hydroxynaphthalene-2-sulfonate(NSS), sodium dodecyl sulfate(SDS), and sodium dodecyl benzene sulfonate(SDBS), were used to examine the fouling of an anion exchange membrane(AEM) in electrodialysis(ED),to explore the effect of molecular characteristics on the fouling behavior on the AEM and changes in the surface and electrochemical properties of the AEM. Results indicated that the fouling degree of the AEM by the different organics followed the order:SDBS > SDS > NSS > BS > MS. SDBS and SDS formed a dense fouling layer on the surface of the AEM, which was the main factor in the much more severe membrane fouling, and completely restricted the transmembrane ion migration. The other three organics caused fouling of the AEM by adsorption on the surface and/or accumulation in the interlayer of the AEM, and exhibited almost no influence on the transmembrane ion migration. It was also concluded that the organics with benzene rings caused more severe fouling of the AEM due to the stronger affinity interaction and steric effect between the organics and the AEM compared with organics with aliphatic chains.

关键词： Anion exchange membrane Different structural organics Membrane fouling Property characterization Fouling mechanism analyses

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Evaluation of synthesis gas production based on simulation study of steam fluidized bed gasification with shift reaction using raw and torrefied oil palm frond as feedstock

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AIP Conference Proceedings 2025年第1期3266卷

作者： Noor Asma Fazli Abdul Samad Faculty of Chemical & Process Engineering Technology Universiti Malaysia Pahang Al-Sultan Abdullah Lebuh Persiaran Tun Khalil Yaakob 26300 Kuantan Pahang Malaysia

Oil palm frond (OPF) is major agricultural waste from oil palm industry in Malaysia which can be utilized as biomass feedstock for syngas production by using gasification process. Employing torrefaction on OPF as biomass pretreatment could improve carbon and energy contents in the biomass which improves the production of syngas by using steam as gasifying agent. The objective of this study is to construct a validated simulation model for steam fluidized-bed gasification with shift reaction for evaluating the effect of gasification temperature, steam-to-biomass ratio and shift reaction temperature on syngas production and gasification performance using raw and torrefied OPF. Aspen Plus software is used to develop a simulation model for steam fluidized-bed gasification with shift reaction by minimizing Gibbs free energy and was validated with experimental data from literature. Sensitivity analysis of simulation model were performed at different gasification temperature from 700 to 1000 °C and different steam-to-biomass ratio from 0.2 to 1.0 for evaluating hydrogen yield and H2/CO molar ratio. Furthermore, different shift reaction temperature from 200 to 1000 °C is simulated for evaluating syngas improvement in terms of hydrogen yield and H2/CO molar ratio. Simulation results show torrefied OPF exhibits better hydrogen yield but lower H2/CO molar ratio at different gasification temperature and steam-to-biomass ratio. Gasification temperature of 800°C to 900°C are found to be optimum with highest hydrogen yield for all feedstocks. Steam-to-biomass ratio of 0.4 to 0.5 was preferred to provide sufficient steam for gasification process as further increase of the ratio would decrease syngas yield. The increase in shift reaction temperature improves the quality of syngas in terms of H2/CO molar ratio. In overall, torrefied OPF improves the quantity of syngas produced but reduces the quality of syngas.

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Upgrading of biogas from anaerobic digestion using pressurized water scrubbing

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AIP Conference Proceedings 2025年第1期3266卷

作者： Vinothraj Panneer Selvam Noorlisa Harun Ruwaida Abdul Rasid Faculty of Chemical & Process Engineering Technology Universiti Malaysia Pahang Al-Sultan Abdullah Lebuh Persiaran Tun Khalil Yaakob 26300 Kuantan Pahang Malaysia

The two most significant applications for biomethane, which is created from biogas, are gas injection into the gas grid and vehicle fuel. The transition to biomethane allows for the expansion of biogas applications into transportation sectors, thereby supporting carbon-neutral goals. Biogas that serves as the biomethane source must be decontaminated since it contains unwanted substances such hydrogen sulfide (H2S), ammonia (NH3), siloxanes, and water. High-pressure water scrubbing is an environmentally friendly method of upgrading biogas. This study aims to simulate biomethane production by upgrading the biogas produced by anaerobic digestion of food waste by using high-pressure water scrubbing in Aspen Plus software. The component list, design specifications of columns, and input conditions are specified in Aspen Plus. Radfrac column models were selected in this study to simulate the absorber, flash, and stripper. The influence of column height, pressure, temperature, and the type of packing column used in the absorber on biomethane purity and CO2 removal percentage was examined using sensitivity analysis. The biomethane purity obtained was more than 95%, which is the average standard concentration for use as automobile fuels or in a gas grid. The biomethane purity and CO2 removal percentage improved when the height and pressure of the absorbers were increased. In contrast, absorber temperature was inversely proportional to the biomethane purity and CO2 removal. Random packing for the absorber yielded a higher amount of biomethane purity and CO2 removal than structured packing. The simulation model can be used to portray biomethane production by enhancing biogas using high-pressure water scrubbing method.

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Advancing CO2 methanation with 3D-engineered catalysts: Innovations, challenges, and future prospects

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Journal of Alloys and Compounds 2025年 1028卷

作者： Samidin, Salma Aziz, Fazilah Farhana Abd Rusdan, Nisa Afiqah Rahim, Khoirul Solehah Abdul Abdulkareem-Alsultan, G. Timmiati, Sharifah Najiha Wan Isahak, Wan Nor Roslam Department of Chemical and Process Engineering Faculty of Engineering and Built Environment Universiti Kebangsaan Malaysia UKM Selangor Bangi43600 Malaysia Institute of Fuel Cell Universiti Kebangsaan Malaysia UKM Selangor Bangi43600 Malaysia PETRONAS Research Sdn Bhd Petronas Research & Scientitic Jln Ayer Hitam Bangi Government and Private Training Centre Area Selangor Bandar Baru Bangi43000 Malaysia Defence Research Institute The National Defence University of Malaysia Kuala Lumpur Kem Sungai Besi57000 Malaysia Catalysis Science and Technology Research Centre Faculty of Science Universiti Putra Malaysia 43400 Serdang Selangor Malaysia

The increasing global energy demand and the urgent need to reduce greenhouse gas emissions have intensified interest in CO2 methanation, a pivotal process in carbon capture and utilization (CCU) technologies for sustainable energy systems. Three-dimensional (3D) catalyst materials have emerged as groundbreaking solutions, offering enhanced structural properties, increased surface area, and superior stability, thereby significantly improving the efficiency and effectiveness of the methanation process. Conventional catalyst designs face limitations, including short operational lifespans, suboptimal selectivity, and inefficient heat and mass transfer, which hinder their scalability and broader industrial adoption. Despite advancements, the potential of innovative fabrication methods, such as 3D printing and templating, to optimize catalyst performance in CO2 methanation remains insufficiently explored and systematically reviewed. This review systematically examines the development and application of 3D catalyst materials in CO2 methanation, emphasizing their fabrication techniques, performance enhancements, and contributions to industrial processes. The study highlights how 3D catalysts outperform traditional designs regarding of stability, selectivity, and energy efficiency, presenting a comprehensive analysis of novel material innovations and their scalability for industrial applications. It bridges knowledge gaps by linking emerging fabrication technologies to practical CO2 utilization solutions. 3D catalyst materials represent a paradigm shift in CO2 methanation, addressing critical challenges in catalyst performance while supporting the global transition toward carbon neutrality and sustainable energy systems. This review provides important new information for developing 3D catalysts, highlighting their revolutionary potential to bring cutting-edge materials science into line with large-scale energy solutions. It emphasizes the value of 3D catalysts in addressing

关键词： Scalability

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Functionalization of polyethersulfone membrane with graphene oxide to improve membrane performance and properties for water treatment

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AIP Conference Proceedings 2025年第1期3266卷

作者： Ellora Priscille Ndia Ntone Sunarti Abd Rahman Rozaimi Abu Samah Mohamad Syafiq Abdul Wahab Faculty of Chemical & Process Engineering Technology Universiti Malaysia Pahang Al-Sultan Abdullah Lebuh Persiaran Tun Khalil Yaakob 26300 Kuantan Pahang Malaysia

Improvement of physicochemical properties, morphological structure, permeate flux and selectivity is of great importance for membranes in water treatment, desalination and water treatment. The implementation of nanoparticles in membrane functionalization has shown positive results in the synthesis of effective performance membranes. In the recent work, graphene oxide (GO) at a concentration ranging from 0 - 0.4 wt. % was added into the top polyamide (PA) layer of polyethersulfone (PES) membrane by interfacial polymerization (IP) method. The outcome of GO on the morphology, physicochemical structure, and charge of the outermost surface layer of the membrane were examined using scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), contact angle (CA), and surface zeta potential. Permeation flux, paracetamol rejection, and fouling performance were also evaluated. Compared to the non-modified membranes, the GO modified membranes performed better. From the results, the introduction of GO reduced the CA of the membrane, which ultimately improved the hydrophilic characteristics of the membrane. The membrane with GO 0.2 wt. % had the highest permeate flux of 22.6 L/m2h and 97.7% paracetamol rejection, with a flux recovery ratio of 91.67%. These performances were better than those of the unmodified membrane. Based on these results, functionalization of membranes with GO improves the structure and performances of the membrane and provides a potential means for developing effective, durable, and resistant membranes.

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Molecular dynamics approach on intermolecular interaction between n-icosane and gemini surfactant assisted nanoparticles

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Petroleum Research 2022年第3期7卷 366-371页

作者： Shamala Devi Vijayakumar Junaidi Zakaria Norida Ridzuan Author's Faculty of Chemical and Process Engineering Technology Universitiy Malaysia Pahang26300GambangPahangMalaysia

Wax molecules tend to aggregate,and form wax solid at low temperature and result in a wax *** wax inhibitors are introduced to prevent wax ***,the performance of chemical wax inhibitors is temperature *** method using Molecular Dynamics(MD)simulation is used in this research to investigate how temperature affects wax inhibition using 2,5,8,11 Tetramethyl 6 dodecyn-5,8 Diol Ethoxylate Gemini surfactant(GS)and nanoparticles silicon dioxide(NP1),tin oxide(NP2),and nickel oxide(NP3).Wax-wax interaction of H58⋯H61of n-icosane and wax-solute interaction of hydrogen atom from n-icosane wax and carbonyl oxygen atoms from GS and NPs was investigated via radial distribution function analysis(rdf).The findings revealed that GS/NPs blends have a better chance of wax inhibition than corresponding *** that,wax-wax interaction was strongest at 288K,indicating the higher chances of wax formation at low *** simulation is a promising tool for identifying atoms responsible for the wax formation and inhibition and can be used for chemical wax inhibitor screening for different temperature.

关键词： Gemini surfactant Nanoparticles rdf analysis Intermolecular interaction Temperature

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Engineered porous Ni2P-nanoparticle/Ni2P-nanosheet arrays via the Kirkendall effect and Ostwald ripening towards efficient overall water splitting

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Nano Research 2020年第8期13卷 2098-2105页

作者： Yutai Wu Hui Wang Shan Ji Bruno G.Pollet Xuyun Wang Rongfang Wang State Key Laboratory Base for Eco-Chemical Engineering College of Chemical EngineeringQingdao University of Science and TechnologyQingdao266042China College of Biological Chemical Science and Chemical EngineeringJiaxing UniversityJiaxing314001China Department of Energy and Process Engineering Faculty of EngineeringNorwegian University of Science and Technology(NTNU)NO-7491TrondheimNorway

Transitional metal phosphides with array-like structure grown on conductive support materials are promising bifunctional catalysts for the oxygen evolution reaction(OER)and hydrogen evolution reaction(HER).In this study,a method was developed to synthesize directly porous Ni2P nanosheet arrays and Ni2P nanoparticles onto nickel foam via a hydrothermal reaction followed by a phosphorization *** studies revealed that the allomorphs of Ni2P nanosheets and Ni2P nanoparticles in the array-like structure were formed via the Kirkendall effect and Ostwald ripening.A fully functional water electrolyzer containing Ni2P as electrodes for the OER and HER exhibited promising activity and *** 10 mA·cm^−2,a Ni2P cell voltage of 1.63 V was obtained,which was only 0.05 V smaller than that found for Pt/C/NF||RuO2/NF *** enhanced electrocatalytic performance resulted from the favorable porosity of the Ni2P arrays and the synergistic effect between Ni2P nanosheets and Ni2P nanoparticles.

关键词： Ni2P catalysts arrays overall water splitting Kirkendall effect Ostwald ripening

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Life cycle assessment of deep eutectic solvent employment for sustainable nanocellulose production from biomass: a systematic review

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Green Chemistry Letters and Reviews 2025年第1期18卷

作者： Angky Wahyu Putranto Sri Suhartini Yusuf Wibisono Nanang Masruchin Adeline Seak May Chua Gek Cheng Ngoh a Sustainable Process Engineering Centre Department of Chemical Engineering Faculty of Engineering University of Malaya Kuala Lumpur Malaysiab Department of Biosystems Engineering Faculty of Agricultural Technology Universitas Brawijaya Malang Indonesia c Department of Agro-industrial Technology Faculty of Agricultural Technology Universitas Brawijaya Malang Indonesiad Centre of Excellence in Bioenergy and Biorefinery Faculty of Agricultural Technology Universitas Brawijaya Malang Indonesia b Department of Biosystems Engineering Faculty of Agricultural Technology Universitas Brawijaya Malang Indonesia e Research Center for Biomass and Bioproducts National Research and Innovation Agency (BRIN) Cibinong Indonesia a Sustainable Process Engineering Centre Department of Chemical Engineering Faculty of Engineering University of Malaya Kuala Lumpur Malaysia

ABSTRACTNanocellulose has been the research focus in recent years due to its unique properties, diverse potential applications, and the availability of abundant biomass sources. In view of the use of hazardous chemicals and high temperatures via conventional solvents, deep eutectic solvents (DESs) as green solvent-based pretreatments have been explored to facilitate sustainable nanocellulose production. However, detailed and comprehensive studies on life cycle assessment (LCA) in nanocellulose production to be fully considered sustainable production are still lacking. Therefore, this review comprehensively investigates the LCA aspects of nanocellulose production from various biomass sources. The review findings underlined that the chemicals used for the pretreatment and isolation of nanocellulose significantly contributed to Global Warming Potential (GWP) in 85% of the case studies. Four scenario processes of nanocellulose production are proposed to reduce environmental impact, since DES has a recovery rate of 80–95% and the use of chlorine-free bleaching has reduced the GWP up to 70 kg CO2equivalent. Furthermore, cradle-to-gate sustainable nanocellulose production through DES-based pretreatment and the LCA impact categories are discussed in this review paper. Future outlooks and recommendations provide insights into the potential environmental benefits of implementing DES-based pretreatment processes for sustainable nanocellulose *** ABSTRACTDisplay full size

关键词： Life cycle assessment nanocellulose production deep eutectic solvent biomass sustainable

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Bifunctional additive phenyl vinyl sulfone for boosting cyclability of lithium metal batteries

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Green chemical engineering 2023年第1期4卷 49-56页

作者： Xiaoyan Zhang Juyan Zhang Mengmin Jia Linshan Peng Nana Zhang Suitao Qi Lan Zhang Shaanxi Key Laboratory of Energy Chemical Process Intensification School of Chemical Engineering and TechnologyXi'an Jiaotong UniversityXi'an710049China CAS Key Laboratory of Green Process and Engineering Beijing Key Laboratory of Ionic Liquids Clean ProcessInstitute of Process EngineeringChinese Academy of SciencesBeijing100190China Faculty of Engineering and Physical Sciences Department of Chemical and Process EngineeringUniversity of SurreyGuildfordGU27XHUK

One of the bottlenecks limiting the cycling stability of high voltage lithium metal batteries(LMBs)is the lack of suitable ***,phenyl vinyl sulfone(PVS)is proposed as a multifunctional additive to stabilize both cathode and anode interfaces as it can be preferentially oxidized/reduced on the electrode *** PVS derived solid electrolyte interphase films can not only reduce the transition metal dissolution on the cathode side,but also suppress the Li dendrite spread on the lithium anode *** Li||Li symmetric battery with PVS addition delivers longer cycle life and a higher critical current density of over 3.0 m Ah cm^(-2).The LiNi_(0.8)Co_(0.1)Mn0.1O_(2)(NCM811)||Li full cell exhibits excellent capacity retention of 80.8%or 80.0%after 400 cycles at 0.5 C or 1 C rate with the voltage range of 3.0–4.3 *** particular,the NCM811||Li cell under constrained conditions remains operation over 150 *** work offers new insights into the electrolyte formulations for the next generation of LMBs.

关键词： Lithium metal battery Ni-rich cathode Phenyl vinyl sulfone Dendrite

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Adsorption of CO2 on ZSM-5 and Cu-MOF at room temperature and low pressure conditions for Carbon Capture and Storage (CCS) application

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Materials Today: Proceedings 2022年 57卷 1345-1355页

作者： Daud, N.K. Najib, N.H.I.M. Faculty of Chemical & Process Engineering Technology Universiti Malaysia Pahang Lebuhraya Tun Razak Gambang26300 Malaysia

The application of Carbon Capture and Storage (CCS) is viewed as a key strategy to achieve CO2 reduction targets. In capturing CO2 process, both adsorption and absorption are promising techniques for CO2 capture, but adsorption processes using solid adsorbents are the prevailing technique nowadays. In this study, the performance of the prepared adsorbents on the CO2 capture capability is investigated and compared. Zeolite (ZSM-5) and copper metal–organic framework (Cu-MOF) are selected as adsorbents because of high surface area and the excellent performance in the adsorption process. The performance of both adsorbents in CO2 adsorption is evaluated in a fabricated setup consists of a metal cylindrical vessel equipped with flow of pure CO2 gas from a cylindrical tank. The efficiency of the adsorption system was explored as a function of the experimental parameters: effect of adsorbent dosage (0–500 mg) and inlet flow pressure (0–1 bar). Based on the findings from FTIR, EDX and XRD analyses, the results suggested successful formation of ZSM-5 and Cu-MOF. The highest particle size distribution and area for ZSM-5 were in the range of 25–66 µm and 1.7–442 µm2, while 102–149 µm and 1.7–1400 µm2 for Cu-MOF, respectively. SEM images show an agglomeration and flaky particles. From the TGA analysis, ZSM-5 tends to remain stable compared to Cu-MOF where lacks the ability to retain its framework at temperature above 400 °C. The optimum conditions obtained in the adsorption process for both adsorbents were 200 mg adsorbent dosage and 1 bar inlet pressure. Based on the results, ZSM-5 shows the best performance with high CO2 adsorption capacity as compared to Cu-MOF at the low pressure system. Under the optimum condition, 800 and 1000 mg/g adsorption capacity of Cu-MOF and ZSM-5 were achieved within 50 min of reaction to adsorb CO2. © 2022

关键词： Carbon dioxide

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