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Isotherm and kinetic of adsorptive Purolite S108 mixed matrix membrane for boron adsorption

Materials Today: Proceedings 2023年

作者： Siti Norfaizah M. Noor Nurul Hazirah Hasnol Syed Mohd Saufi Faculty of Chemical & Process Engineering Technology Universiti Malaysia Pahang Lebuhraya Persiaran Tun Khalil Yaakob 26300 Gambang Kuantan Pahang Malaysia

Excess boron in the water may cause adverse effects on humans, animals, and plants. An adsorptive mixed matrix membrane (MMM) containing Purolite S108 resin as an active filler was developed in the current study to remove boron from water. A flat sheet membrane was fabricated from a dope solution of 20 wt% polyethersulfone (PES), 5% polyvinylpyrrolidone, 1% Purolite S108 and 74% n-methyl-2-pyrrolidone using a phase inversion process. The membrane was characterized by Field Emission Scanning Electron Microscope (FESEM) and porosity. Both the pristine PES and Purolite S108 MMM membranes displayed an asymmetric structure with different macrovoid patterns at the bottom. The larger macrovoid at the bottom of the pristine PES membrane suggested a faster demixing rate during the membrane phase inversion process. In contrast, the Purolite S108 MMM showed a teardrop macrovoid that formed due to changes in the membrane material's surface energy or chemical composition. These changes created areas where the membrane was less wettable, causing water droplets to form instead of spreading out. Furthermore, the Purolite S108 MMM membrane exhibited slightly higher porosity than the pristine PES membrane, with porosity values of 43.27% and 38.05%, *** adsorption isotherm and kinetic of the Purolite S108 MMM were evaluated using an aqueous boron solution. Three two-parameters adsorption isotherms were tested: Langmuir, Freundlich and Temkin. Purolite S108 MMM is best fitted to the Langmuir adsorption isotherm with the maximum binding capacity of 1.4349 mg B/g membrane. Pseudo-first order (PFO) and pseudo-second-order (PSO) models were tested in the kinetic experiment. The boron uptake by the Purolite S108 MMM followed a PFO kinetic model . The adsorption isotherm and kinetic data of the Purolite S108 MMM are essential for further optimizing the adsorptive membrane operation for boron removal.

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The influence of preparation and pretreatment on the physicochemical properties and performance of plant-based biocoagulants in treating wastewater

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Environmental Advances 2023年 14卷

作者： Kurniawan, Setyo Budi Ahmad, Azmi Said, Nor Sakinah Mohd Gustinasari, Kiki Abdullah, Siti Rozaimah Sheikh Imron, Muhammad Fauzul Laboratory of Algal Biotechnology Centre Algatech Institute of Microbiology of the Czech Academy of Sciences Opatovický mlýn Novohradská 237 Třeboň 379 81 Czech Republic Department of Petrochemical Engineering Politeknik Tun Syed Nasir Syed Ismail Johor Pagoh 84600 Malaysia Department of Chemical and Process Engineering Faculty of Engineering and Built Environment Universiti Kebangsaan Malaysia (UKM) Selangor Bangi 43600 Malaysia Study Program of Environmental Engineering Department of Biosystem Engineering Faculty of Agricultural Engineering Universitas Brawijaya Malang 65145 Indonesia Study Program of Environmental Engineering Department of Biology Faculty of Science and Technology Universitas Airlangga Kampus C UNAIR Jalan Mulyorejo Surabaya 60115 Indonesia Department of Water Management Faculty of Civil Engineering and Geosciences Delft University of Technology Stevinweg 1 CN Delft 2628 Netherlands

Biocoagulants have gained attention as an alternative to chemical coagulants in water and wastewater treatment due to their ability to remove pollutant parameters such as turbidity, suspended solids, color, and organic compounds. Plant-based biocoagulants are currently the most promising due to their abundant availability and reliable performance. A proper preparation of plant-based biocoagulants is required to ensure the active compounds from the plants can be extracted. Plant raw materials are prepared into biocoagulants using drying and grinding, extraction, and purification. In mechanical preparation, drying and grinding exhibit great influence on the performance of plant-based biocoagulants due to the removal of moisture and higher contact with the carrier medium during dissolution. A smaller biocoagulant's size resulted in up to 78 % higher removal of turbidity. In chemical preparation, the oil needs to be removed before extracting the active ingredients to avoid low active compound extraction yields. The defatting of Moringa oleifera seeds showed an 18 % higher protein content. Salt and alcohol extractions were mentioned as superior extraction methods to obtain carbohydrate and protein from plant-based biocoagulants compared to water extraction, with up to a 5 % increment in turbidity removal. Preparation and pretreatment protocols have a great influence on the properties and performance of plant-based biocoagulants. Further extension of research on plant-based biocoagulants should address the problems in the initial characterization of plant material, standard pretreatment and preparation protocols, and real-scale application of plant-based biocoagulants. © 2023 The Author(s)

关键词： Biocoagulant Coagulant Environmental pollution Extraction Properties Synthesis

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The modified pomegranate peel as an economical and highly effective adsorbent for malachite green dye removal from wastewater

Colloids and Surfaces C: Environmental Aspects

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Colloids and Surfaces C: Environmental Aspects 2024年 2卷

作者： Farzaneh Abbasi Mohsen Mansouri Marjan Tanzifi Farbod Ebrahimi Amin Sadeghizadeh Department of Chemical Engineering Faculty of Engineering Ilam University Ilam Iran Nanoparticle Process Technology Faculty of Engineering University of Duisburg-Essen Duisburg Germany Biosystems Engineering University of Manitoba Winnipeg MB R3T 2N2 Canada

This research investigated the ability of acid-modified pomegranate peel to remove malachite green (MG) dye from aqueous solutions. Pomegranate peel, an abundant agricultural byproduct, was modified using hydrochloric acid to enhance its adsorption capacity. The effects of parameters like particle size, pH, initial MG concentration, contact time, temperature and adsorbent dosage on the dye removal efficiency were studied. Under optimized conditions of pH 8, 40 min contact time, 25°C temperature and 0.01 g/ml adsorbent dose with 5 mg/L MG solution, about 96.8 % dye removal was achieved. Kinetic data fitted well to the pseudo-second order model, indicating chemisorption with electrostatic interactions governing the adsorption. Equilibrium data were best described by the Temkin isotherm model, suggesting a heterogeneous binding energy distribution. Thermodynamic calculations revealed the exothermic and spontaneous nature of MG adsorption. FTIR analysis confirmed introduction of functional groups like carboxyl, amine and alkyl groups on the adsorbent surface after acid modification, enabling interactions with dye cations. SEM images displayed increased surface roughness and porosity for the modified biosorbent relative to the raw form. The acid-modified pomegranate peel proved to be an economical, eco-friendly and effective adsorbent for removing the hazardous cationic dye MG from wastewater. The findings support agricultural waste valorization for environmental remediation applications.

关键词： Dye adsorption Biosorbent Environmental remediation Kinetic and isotherm models MG

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What decades of plastics waste management have taught us

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Nature Reviews Materials 2025年 1-2页

作者： Coralie Jehanno Haritz Sardón Marta Ximenis Louise Breloy Oğuzhan Akin Kevin M. Van Geem Rita Kol Steven De Meester POLYKEY Donostia-San Sebastián Spain POLYMAT University of the Basque Country UPV/EHU Donostia-San Sebastián Spain Laboratory for Chemical Technology (LCT) Department of Materials Textiles and Chemical Engineering Faculty of Engineering & Architecture Ghent University Zwijnaarde Belgium Laboratory for Circular Process Engineering (LCPE) Department of Green Chemistry and Technology Faculty of Bioscience Engineering Ghent University Kortrijk Belgium

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Co-Pyrolysis of Municipal Solid Waste (Msw) and Biomass with Co/Sludge Fly Ash Catalyst

SSRN

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SSRN 2022年

作者： Gao, Ningbo Milandile, Mwenya Humphrey Quan, Cui Sipra, Ayesha Tariq Miskolczi, Norbert Su, Sheng Xi'an Solid Waste Utilization International Science and Technology Cooperation Base School of Energy and Power Engineering Xi’an Jiaotong University Shaanxi Xi’an710049 China Key Laboratory of Coal Combustion School of Energy and Power Engineering Huazhong University of Science and Technology Wuhan430074 China University of Pannonia Faculty of Engineering Institute of Chemical Engineering and Process Engineering MOL Department of Hydrocarbon & Coal Processing Egyetem u. 10 VeszprémH-8200 Hungary

Catalytic co-pyrolysis of municipal solid waste (MSW) and biomass pine sawdust (PSD) under sludge fly ash (SFA) could be a breakthrough towards the energy challenges and waste management. This paper aims to develop a unique cobalt-alkali-SFA (Co-A-SFA) catalyst, in order to investigate its influence under optimal operating conditions in a fixed bed reactor for syngas production. The catalytic activity was assessed under different Co loading and support ratios. The results indicated that in the presence of Co-A-SFA catalyst, gas production increased due to alkali pretreated fly ash catalyst. Moreover, increasing the Co loading from 5wt.% to 10wt.%, the syngas production increased irrespective of the individual feedstock ratios. Catalytic co-pyrolysis of MSW and PSD also minimized the concentration of complex liquid compounds and heavy hydrocarbons. Therefore, this study establishes a new approach towards energy production and waste management through useful resource utilization of MSW, PSD and SFA. The outcomes acquired in this investigation showed that blended feedstock in co-pyrolysis of MSW and pine sawdust could enhance production of valuable syngas under SFA-based catalyst. © 2022, The Authors. All rights reserved.

关键词： Municipal solid waste

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Optimization of waste plastic reutilized polymeric membrane fabrication for efficient wastewater treatment

Next Sustainability

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Next Sustainability 2025年 6卷

作者： Yeit Haan Teow Aerry Ting Wei Huan Zhen Hong Chang Department of Chemical and Process Engineering Faculty of Engineering and Built Environment Universiti Kebangsaan Malaysia Bangi 43600 Malaysia Research Centre for Sustainable Process Technology (CESPRO) Universiti Kebangsaan Malaysia UKM Bangi Selangor Darul Ehsan 43600 Malaysia Cleaner Production – UKM Research Group Universiti Kebangsaan Malaysia UKM Bangi Selangor Darul Ehsan 43600 Malaysia Department of Chemical and Petroleum Engineering Faculty of Engineering Technology and Built Environment UCSI University Kuala Lumpur 56000 Malaysia

The escalating global production of plastic waste and the urgent need for clean water presents profound environmental and sustainability concerns. Repurposing waste plastic into value-added products, such as polymeric membranes for ultrafiltration applications, offers a promising avenue for addressing these challenges. This study focuses on utilizing waste polystyrene (PS) to synthesize membranes via non-solvent induced phase separation method. Through a systematic optimization process utilizing Response Surface Methodology (RSM), the effects of solvent type, PS concentration, and titanium dioxide (TiO 2 ) loading on membrane performance were explored. The fabricated PS polymeric membranes were evaluated for their effectiveness in humic acid removal using a dead-end membrane filtration system. The optimal PS polymeric membrane formula, achieved at PS concentration of 16.31 wt% and TiO 2 concentration of 0.10 g/L using NMP as the solvent, exhibited a permeate flux of 166.55 L/m 2 h and HA rejected of 84 %. The study also demonstrates the suitability of RSM as a statistical tool for membrane formulation optimization, with low percentage errors (5.04 % for permeate flux and 0.69 % for HA rejection). Furthermore, fouling mechanism analysis utilizing the Hermia’s model confirmed the prevalence of cake filtration in the optimized PS polymeric membrane filtration. This study contributes to the advancement of sustainable membrane technology for wastewater treatment, offering insights into the potential of waste plastic reutilization in membrane fabrication and addressing critical environmental and water resource challenges.

关键词： Polymeric membrane Waste plastic reutilization Membrane fabrication Optimization Wastewater treatment

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Adaptation of effective consortium bacteria for ammonia removal from domestic wastewater using moving bed biofilm reactor

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Materials Today: Proceedings 2023年

作者： Maryam Zulkifli Hassimi Abu Hasan Siti Rozaimah Sheikh Abdullah Ahmad Razi Othman Department of Chemical and Process Engineering Faculty of Engineering and Built Environment Universiti Kebangsaan Malaysia 43600 UKM Bangi Selangor Malaysia Research Centre for Sustainable Process Technology (CESPRO) Faculty of Engineering and Built Environment Universiti Kebangsaan Malaysia 43600 UKM Bangi Selangor Malaysia

Three effective microbes with the highest ammonia removal potential which are Burkholderia latens isolate NS2, Paenibacillus sp. isolate NB1 and Providencia rettgeri isolate PS were acclimatized with synthetic wastewater for 85 days (∼3 months) to achieve a stable and maximum removal of ammonia (NH 3 -N) and chemical oxygen demand (COD) from domestic wastewater. The objective of this paper is to investigate the adaptation of effective consortium bacteria for a low-cost technology of ammonia and COD removal. Synthetic wastewater was used as it provides sufficient food sources such as carbon, nitrogen and phosphorus for microbes growth. The process was carried out in a 60 L working volume of moving bed biofilm reactor (MBBR) in a batch mode. Propylene hexafilter media was used as a surface attachment for microbes. Microbes attachment at the hexafilter media was observed increased although the aeration was maintained at low flowrate which is at 2.6 L/min. The initial value of ammonia fed into the reactor was 10 mg/L. The highest NH 3 -N removal percentage achieved was 96.5% with average effluent at 0.82 mg/L at day 75 in 24 h while the highest COD removal percentage achieved was 95.9% with average effluent at 39 mg/L at day 58 in 24 h. The bacteria consortium are considered flexible as it can adapt to low and high COD and able to remove NH 3 -N at room temperature. The SEM shows the presence of bacteria consortium on the hexafilter carrier. As conclusions, this finding indicates that consortium bacteria can treat domestic wastewater containing ammonia and COD to support the National Water Quality Standard .

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Development of paper based amperometric biosensor for glucose content measurement in Malaysian Stingless Bee Honey 2

Development of paper based amperometric biosensor for glucos...

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2nd Joint International Conference on Emerging Computing technology and Sports, JICETS 2019

作者： Julika, W.N. Ajit, A. Syazlin, N. Ariff, A. Naila, A. Sulaiman, A.Z. Faculty of Chemical and Process Engineering Technology College of Engineering Universiti Malaysia Pahang Gambang Kuantan Pahang26300 Malaysia Research Centre Maldives National University Rahdhebai Hi'ngun Male Maldives Faculty of Bioengineering and Technology Universiti Malaysia Kelantan Kampus Jeli Locked Bag 100 Jeli Kelantan17600 Malaysia

Amperometric biosensor for glucose content measurement in Malaysian stingless bee honey was developed using screen printed carbon electrode (SPCE) integrated with paper disc immobilized with enzyme Glucose Oxidase (GOx) using simple physical adsorption method. The paper-based biosensor required only 8 μL of sample solution for glucose analysis. The calibration of glucose biosensor is linear between 0.5 mM to 4.5 mM (R2= 0.9925) and has a detection limit of 0.15 mM. Interference study on several compound affecting the biosensor response and storage stability was investigated. In addition, its performance was demonstrated in the analysis of six honey samples. The results obtained using glucose biosensor was validated by high performance liquid chromatographic (HPLC) method. The addition of glucose in pure honey at various concentration were also tested by this paper-based biosensor where the current obtained shows increasing trend with the addition of glucose. From this research, it can be concluded that, the prototype sensor to determine glucose adulteration in stingless bee honey was successfully developed. © 2020 IOP Publishing Ltd. All rights reserved.

关键词： Glucose

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Corrigendum to "Utilization of co-substrates in municipal sewage sludge co-pyrolysis: Yields and characterization of biochar, bio-oil, and syngas, with economic feasibility analysis" [J. Anal. Appl. Pyrolysis 189 (2025) 107091] (Journal of Analytical and Applied Pyrolysis (2025) 189, (S0165237025001445), (10.1016/***.2025.107091))

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Journal of Analytical and Applied Pyrolysis 2025年 189卷

作者： Biney, Michael A. Gusiatin, Mariusz Z. Trakal, Lukáš Moško, Jaroslav Pohořelý, Michael Department of Environmental Biotechnology Faculty of Geoengineering University of Warmia and Mazury in Olsztyn Sloneczna Str. 45G Olsztyn10-709 Poland Department of Environmental Geosciences Faculty of Environmental Sciences Czech University of Life Sciences Prague Kamýcká 129 Suchdol Prague165 00 Czech Republic Institute of Chemical Process Fundamentals The Czech Academy of Sciences Rozvojová 1/135 Suchdol Prague165 00 Czech Republic Department of Power Engineering University of Chemistry and Technology Technická 5 Prague166 28 Czech Republic

The authors regret that an error was made in the affiliation of one of the co-authors, Michael Pohořelý. In the published article, his affiliation was incorrectly listed as: Incorrect Affiliation: c Institute of chemical process Fundamentals, The Czech Academy of Sciences, Rozvojová 1/135, Suchdol, 165 00 Prague 6, Czech Republic. The correct affiliation should be: Correct Affiliation: c Institute of chemical process Fundamentals, The Czech Academy of Sciences, Rozvojová 1/135, Suchdol, 165 00 Prague 6, Czech Republic. d Department of Power engineering, University of Chemistry and technology, Technická 5, 166 28 Prague 6, Czech Republic. This correction does not affect the scientific conclusions of the paper. The authors would like to apologise for any inconvenience caused. © 2025 Elsevier B.V.

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Different Strategies for Modifying Polycarbonate Membranes to Control Cell Adhesion

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BioNanoScience 2025年第3期15卷

作者： Podgórski, Rafal Kowalczyk, Piotr Leśnowolska-Wnuczek, Krystyna Dekarz, Maria Kopeć, Kamil Mlynek, Mateusz Trzciński, Jakub Rybak, Ewa Szkop, Michal Ciach, Tomasz Faculty of Chemical and Process Engineering Department of Biotechnology and Bioprocess Engineering Laboratory of Biomedical Engineering Warsaw University of Technology Waryńskiego 1 Warsaw00-645 Poland NanoSanguis S.A. Rakowiecka 36 Warsaw02-532 Poland

Nanoporous polymeric membranes serve many important functions in industry and medicine. However, in the case of direct contact of the membrane with the internal space of living organisms, the membrane itself needs to be modified to achieve the intended effect related to biocompatibility improvement and increase or reduction of cell adhesion. In the present paper, we have conducted an experimental review of ten different chemical modifications of polycarbonate nanoporous membranes, namely coating with polydopamine, dextran, graphene oxide, poly(acrylic acid), polyvinylpyrrolidone, methylated poly(ethylene glycol), or trichloro (3,3,4,4,5,5,6,6,7,7,8,8,8-tridecafluorooctyl)silane. The modified membranes were subsequently subjected to various analyses, such as scanning electron microscopy, water contact angle measurement, diffusion study with toluidine blue O dye, and finally, cellular adhesion to the membrane’s surface. The results showed that introduced modifications affected the nature of the membranes (hydrophobicity/hydrophilicity) and cell adhesivity, while preserving its separation and diffusion properties in most cases. The presented modification methods can be selected for use depending on the desired properties of the final product and its application. © The Author(s) 2025.

关键词： Cell adhesion

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