Performance Of Columns Research Articles

Выбор сорбента для элиминации ионов железа из сточных и природных вод

Natural waters and wastewaters often contain heavy metals, e.g., iron. Iron ore mining contaminates groundwater with iron up to 30 maximal permissible concentrations (MPC) as this element gets washed out from rock and soil. Adsorption is the most effective and economically feasible method of additional purification of natural and wastewater from iron. Its efficiency depends on the type of adsorbent. The research objective was to select the most efficient sorption material to eliminate water from iron, as well as to establish the adsorption patterns for different sorbents, thus creating sustainable and effective purification. The study featured carbonaceous sorbent of the SKD-515 grade, mineral sorption materials with aluminosilicate of the AC grade, and silicate-based sorbent of the ODM-2F grade. The porous structure was studied by porometry methods while the surface image was obtained using scanning electron microscopy. Other indicators included equilibrium, kinetics, and dynamics of iron adsorption by various sorbents. The Freundlich and Langmuir equations made it possible to calculate the key adsorption parameters. The Gibbs energy values were obtained from the Langmuir equation and equaled 11.93–20.66 kJ/mol, which indicated the physical nature of the adsorption process. Under static conditions, the sorbents demonstrated a high adsorption capacity with respect to iron, depending on the structure, and could be arranged as AC > SKD-515 > ODM-2F. In SKD-515, iron adsorption occurred in micropores; in AC and ODM-2F, it took place in mesopores. The kinetics of iron extraction showed that the adsorption process was limited by external mass transfer. The research provided a new understanding of iron adsorption by materials of various structures. The conclusions were supported by scanning electron microscopy images. Initial concentration, flow velocity, and loading layer height were studied in dynamics, i.e., during continuous operation of the adsorption column. The system proved extremely effective and reached 99.0% Fe3+ extraction under the following conditions: flow rate = 1 L/min, loading column height = 0.15 m, column diameter = 0.05 m, initial concentration = 0.5 mg/L (5 MPC). The column performance was tested at an initial concentration of iron ions of 50 MPC, which simulated the wastewater treatment at industrial enterprises. This comprehensive study of iron adsorption from wastewater proved the efficiency of the mineral sorption materials with aluminosilicate of AC grade.

Numerical and Theoretical Studies on Axial Compression Performance of Modular Steel Tubular Columns Grouped with Shear-Key Connectors

Shear-keyed inter-modular connections (IMCs) are integral components of high-rise modular steel structures (MSSs), providing robust interconnectivity to support grouped tubular columns across modules, thereby introducing column discontinuities and distinctive structural behavior. This study conducted a comprehensive numerical assessment and theoretical analysis of the axial compression behavior of grouped tubular columns based on a validated finite element model (FEM), which captured the member-to-structural level behavior of steel hollow section (SHS) columns and accommodated geometric imperfections. An FEM was initially developed and validated using 28 axial compression tests documented in the literature, comprising 15 tests on cold-formed and 13 on hot-rolled steel hollow section (SHS) columns. The primary parameters explored in tests included material properties (stainless/carbon), processing methods (cold-formed/hot-rolled), cross-section sizes (D/B), cross-sectional or member slenderness ratios (D/tc, B/tc, or Lc/r), and the number of columns (1, 7, and 11). A comprehensive parametric numerical study involving 103 grouped tubular column FEMs then investigated the influence of initial imperfection, shear-key height (Lt), thickness (tt), steel tube length (D), width (B), thickness (tc), and height (Lc) alongside the effects of space between tube and key, and the gap between tubes. The results indicated that the load-shortening behavior of the grouped columns consists of linear elastic, inelastic, and recession stages. The failure modes observed primarily displayed an S-shaped pair of inward and outward local buckling on the outer sides and double S-shaped local buckling on the interior sides. The buckling arose near the shear key or at 1/4 or 1/2 of the column height. None of the considered models experienced global buckling. Increasing tt, Lt, tc, D, or B enhances strength and stiffness, while Lc or Lc/r linearly affects stiffness and ductility. The columns’ nominal axial strength was reduced because of the shear keys, which decreased compression yielding and caused localized elastic buckling. Subsequently, the theoretical analysis revealed that the design codes do not capture this behavior, and thus, their capacity estimate yields inaccurate findings. This discrepancy renders existing code prediction equations, including those from Indian (IS800), New Zealand (NZS400), European (EC3:1-1), Canadian (CSA S16), American (AISC360-16), and Chinese (GB50017) standards, as well as the model proposed by Li et al., non-conservative. To assure conservative results, the paper recommended modification of existing standards and proposed prediction equations based on a fourth-order differential equation that describes the actual behavior of modular steel columns grouped with shear keys. The proposed design approach accurately predicted the axial compression capacity of modular steel-grouped columns, proving conservative yet effective. This provides valuable data that could transform design and construction techniques for MSSs, extending to various column and IMC forms through adaptable design parameters. This enhancement in structural performance and safety significantly contributes to the advancement of modular construction practices.

Research on Seismic Performance of Partially-Encased Composite Ya-Shaped Steel-Concrete Columns

Research on Seismic Performance of Partially-Encased Composite Ya-Shaped Steel-Concrete Columns

Natural and environmentally friendly rhamnolipid functionalized luffa fibers for adsorptive removal of pharmaceutical contaminant: Batch and fixed-bed column studies

This study aims to explore the potential of utilizing rhamnolipid functionalized luffa fibers as an environmentally sustainable solution for removing pharmaceutical contaminants from water. The efficiency of the developed adsorbent for removing acetaminophen has been investigated in batch and fixed bed column modes. The adsorbent has been characterized via FTIR, XRD, and SEM analyses which revealed the rhamnolipid nanomicelles formation with bi-pyramidal morphology and the presence of functional groups on the surface of the adsorbent. The optimum conditions have been reported (pH: 5.0, adsorbent dosage 2 g/L, initial acetaminophen concentration: 20 mg/L, and contact time: 80 min). The highest adsorption capacity for acetaminophen was 37.03 mg/g at the optimized conditions. Fixed-bed column experiments examined flow rate and initial acetaminophen concentration effects, with the Thomas model assessing column performance. This research investigates the potential of RL-LF for effective water remediation, offering insights into practical applications and optimization strategies.

PANAMA-enabled high-sensitivity dual nanoflow LC-MS metabolomics and proteomics analysis

High-sensitivity nanoflow liquid chromatography (nLC) is seldom employed in untargeted metabolomics because current sample preparation techniques are inefficient at preventing nanocapillary column performance degradation. Here, we describe an nLC-based tandem mass spectrometry workflow that enables seamless joint analysis and integration of metabolomics (including lipidomics) and proteomics from the same samples without instrument duplication. This workflow is based on a robust solid-phase micro-extraction step for routine sample cleanup and bioactive molecule enrichment. Our method, termed proteomic and nanoflow metabolomic analysis (PANAMA), improves compound resolution and detection sensitivity without compromising the depth of coverage as compared with existing widely used analytical procedures. Notably, PANAMA can be applied to a broad array of specimens, including biofluids, cell lines, and tissue samples. It generates high-quality, information-rich metabolite-protein datasets while bypassing the need for specialized instrumentation.

Removal and Recovery of Europium with a New Functionalized Mesoporous Silica-Based Adsorbent

The discharge of acid mine drainage (AMD), characterized by a high concentration of rare earth elements (REEs), poses a significant threat to the health of ecosystems surrounding water sources. The global market demand for REEs has experienced a notable surge in the past decade. Consequently, recovering REEs from waste streams like AMD not only benefits the environment but also offers financial advantages. Europium (Eu), the rarest among REEs, constitutes only 0.1% w/w in monazite and bastnaesite ores. Eu is extensively used in the production of phosphors, alloys, and additives, and is a critical raw material for developing smart devices, ranging from high-resolution color screens to circuitry. Traditional adsorbents typically exhibit limited selectivity towards REE recovery. Mesoporous silica materials, such as SBA15 (Santa Barbara Amorphous-15), provide excellent tunability and modification capabilities, making them an attractive and cost-effective alternative. This research focused on two key aspects: (i) evaluating the dynamic adsorption column performance of granulated SBA15–NH–PMIDA to preferentially recover Eu, and (ii) employing mathematical modeling to optimize the dynamic adsorption column’s operating conditions for real-world applications with a minimal number of experimental runs. Granulated SBA15–NH–PMIDA was chosen as the adsorbent due to its high adsorptive capacity and selectivity in capturing Eu. The study revealed that granulated SBA15–NH–PMIDA exhibited 57.47 mg/g adsorption capacity and an 81% selectivity towards Eu. Furthermore, SBA15–NH–PMIDA demonstrated preferential adsorption toward Eu in complex multi-component solutions, such as AMD. The linear driven force approximation model (LDFAM) provided an acceptable simulation (R2 > 0.91) under varying operational conditions. This validates the use of the model as a tool to effectively simulate and optimize column experiments that used granulated SBA15–NH–PMIDA to recover Eu.

Post-fire seismic performance of precast concrete columns with grouted sleeve connections: An experimental study

This research explores the effects of fire on the seismic behavior of precast concrete columns with grouted sleeve connections. Five precast columns were subjected to fire for 0, 60, and 97 min, then tested under axial loads and horizontal cyclic loading at compression ratios of 0.1 and 0.3. A comparative analysis was performed against a cast-in-place column, identically treated. The study found that fire exposure alters failure modes: non-exposed columns failed flexural, while those exposed for 60 min showed either flexural shear or shear bond failures, varying with axial compression. After 97 min fire exposure, shear bond failure was predominant. Fire exposure duration was inversely proportional to load-bearing capacity, ductility, stiffness, and energy absorption. Conversely, higher axial compression ratios increased load capacity and stiffness but decreased ductility, without significantly affecting energy absorption post-fire. The study culminates in a refined calculation method for estimating post-fire load capacity, achieving accuracy within 5 % error.

Axial compression performance of rubberized concrete-filled steel tubular stub columns after fire exposure: Experimental investigation and calculation models

Rubberized concrete (RuC) has emerged as a promising eco-friendly solution for structural elements, offering improved energy dissipation, damping characteristics, and ductility. Incorporating rubber particles into concrete-filled steel tubular (CFST) columns presents an environmentally conscious alternative for various structural applications. However, understanding its performance post-fire is crucial for safe design application, an area currently lacking comprehensive research. This study investigates the structural behavior of sixteen axially loaded circular RuCFST columns after exposure to fire. The columns, with diameters of 219 mm and 377 mm, are filled with normal concrete and RuC, containing 5 %, 15 %, and 30 % replacement of natural fine and coarse aggregate with rubber particles. Following ISO-834 fire standards, the specimens undergo elevated temperatures and subsequent application of compressive axial loads to determine their post-fire behavior. Analysis includes examination of failure modes, temperature-time relationships, axial load-deformation curves, and strain and stress development in the columns. Microstructural analysis using scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDS) is conducted to study internal morphology before and after exposure to high temperatures. Results indicate non-uniform and nonlinear distributions of maximum temperatures across cross-sections, with historical temperature affecting residual capacity more significantly with increased rubber content and decreased column size. Load-bearing capacities decrease by up to 30 % and 22 % for small and large RuCFST columns, respectively, after exposure to fire. Residual axial stiffness also declines, with reductions of nearly 55 % and 42 % for small and large columns, respectively. In contrast, ductility improves in fire-exposed specimens, with columns having a 30 % rubber replacement ratio showing the highest enhancement. A novel method for calculating post-fire residual load capacity based on the average historical maximum temperature is introduced, demonstrating high accuracy and offering a valuable tool for assessing and reinforcing RuCFST columns after fire exposure.

Seismic Performance of Cross-Shaped Partially Encased Steel–Concrete Composite Columns: Experimental and Numerical Investigations

Special-shaped partially encased steel–concrete composite (PEC) columns could not only improve the aesthetic effect and room space use efficiency, but also exhibit good mechanical performance under static load when used in multi-story residential and office buildings. However, research on the seismic performance of special-shaped PEC columns is insufficient and urgently needed. To investigate the seismic performance of cross-shaped partially encased steel–concrete composite (CPEC) columns, three CPEC columns were designed and tested under combined constant axial load and lateral cyclic load. The test results show that the CPEC columns had good load capacity and ductility, and that the columns failed because of concrete crushing and steel flange buckling after the yielding of the steel flange. The plump hysteresis loops indicated that the CPEC column also had good energy dissipation capacity. Due to the constraint of hydraulic jacks, increasing the load ratio would decrease the effective length, thereby increasing the load capacity of the CPEC column and decreasing the ductility. A finite element model was also established to simulate the response of the CPEC columns, and the simulated results agree well with the experimental results. Thereafter, an extensive parametric analysis was performed to study the influences of different parameters on the seismic performance of CPEC columns. For the CPEC column with an ideal hinged boundary condition at the top, its lateral load capacity gradually decreases with the growth of the load ratio and link spacing and increases with the rise of the steel yield strength, concrete compressive strength, flange and web thickness, and sectional aspect ratio. This research could provide a basis for future theoretical analyses and engineering application.

Facile synthesis of activated biomass loaded with ZnCl2 as eco-friendly adsorbent for BPA and BPS removal: Comparative study on Batch, column and breakthrough performance

The presence of endocrine-disrupting chemicals (EDCs) in water bodies presents hazards to human health and the environment, hence it is important to research methods that are cost-effective and eliminate these pollutants. In this work, untreated coir pith (CP-N), activated coir pith at 700 °C (ACP), and Zinc chloride activation with ACP (ACP-Zn1.5) adsorbents were compared for efficient removal of bisphenol A (BPA) and bisphenol S (BPS) in a single and binary system for batch study. Furthermore, the parameters related to isotherms, thermodynamics, and kinetics were established. The ACP-Zn1.5 exhibited a maximum sorption capacity of 42.58 and 32.25 mg/g for BPA and BPS. The isotherms and kinetics correspond to the Freundlich model and pseudo-second-order kinetics for both BPA and BPS. For binary systems, BPA and BPS exhibit combative and mutual effects by achieving a maximum sorption capacity of 39.69 and 19.45 mg/g. To assess the effectiveness of ACP-Zn1.5, studies in a fixed bed column were also conducted with variations in the flow velocity, bed height, and initial BPA and BPS concentration. The adsorption mechanism investigations have demonstrated that the main forces underlying the process are surface interactions such as the formation of hydrogen bonds and π-π interactions. As a result, the obtained ACP-Zn1.5 shows considerable potential for removing bisphenols by adsorption from the aqueous system.

Axial Compressive Performance of L-Shaped Columns Composed of RAC-Filled Steel Tubes

Axial Compressive Performance of L-Shaped Columns Composed of RAC-Filled Steel Tubes

Comparative analysis of the BFRP and steel reinforcement bars under fire conditions

The FRP reinforcement gained importance due to high tensile strength, high durability and ecological friendliness [1–7]. Its usefulness as the internal or Near Surface Mounted reinforcement in bent concrete elements has already been proven. Though, in terms of the compressive behaviour of the bars and concrete elements incorporating them, there are still few experimental and numerical considerations, especially when high temperatures are considered. This article contains further considerations on the performance of concrete columns with BFRP main reinforcement in fire resistance tests on the basis of previously presented authors’ numerical analyses. Comparative analysis in terms of temperatures, deformations and stresses of concrete columns with BFRP and steel main reinforcement in fire resistance tests is presented by the example of two columns, for which also experimental investigations were performed. Also, a comparative analysis of stress-strain relations for BFRP, steel and concrete at temperatures up to 600°C is presented. It can be concluded that BFRP bars’ properties are strongly different when compressive and tensile performance is considered, especially at elevated temperatures. Tensile strength was higher for BFRP than steel at room temperature, but along with temperature growth, it came the other way (at around 600°C). The compressive strength of the BFRP bars was higher than the value for concrete, but only for temperatures lower than 200°C.

Correction: Effect of axial load and shear span on seismic performance of CFT columns reinforced with end-fixed ultra-high strength rebars

Correction: Effect of axial load and shear span on seismic performance of CFT columns reinforced with end-fixed ultra-high strength rebars

Experimental and numerical study on influence of impact mass and velocity on failure mode of RC columns under lateral impact

Reinforced concrete (RC) structures may encounter impact loads during service life, such as vehicle collisions, ship strikes, and explosions. Limited existing impact tests on RC columns and piers have yet to fully reveal the column impact performance and its relationship with structural or load parameters. To explore the effects of impact mass and velocity, which determine the impact energy, on the impact performance of RC columns, pendulum impact tests on nine RC columns were performed utilizing a specially designed loading setup. The test variables included the impact mass and velocity of the pendulum, as well as the slenderness ratio and stirrup ratio of the columns. During the tests, the impact force and velocity of the pendulum, as well as the axial force, displacement, and acceleration of the columns, were measured. Additionally, the damage evolution of each specimen was recorded using a high-speed camera. One-side shear failure, two-side shear failure near the impact point, and shear failure at the column bottom end were observed during the tests. The results indicated that, under similar impact energy, as the impact velocity increased, the specimens with the low stirrup ratio transitioned from one-side shear failure to two-side shear failure. An enhancement in the impact resistance of the columns was observed when the stirrup ratio was increased, or the slenderness ratio decreased. For the enhanced columns, shear failure was avoided at lower impact velocities; however, at the maximum impact velocity, end shear failure or one-side shear failure yet occurred. Additionally, a parametric analysis using LS-DYNA finite element software further clarified the effects of impact velocity and mass on the dynamic response and failure mode of RC columns.

Axial performance of concrete-filled GFRP tube columns jacketed by outer stainless steel tube and sandwiched concrete

The concrete-filled FRP tube (CFFT) column, a prevalent and crucial structural element in marine environments, requires reinforcement measures to enhance its operational performance. This paper introduces a novel strengthening technology involving sandwiched concrete and stainless steel tube jackets. By conducting axial compression tests on two CFFT columns and nine reinforced columns, the failure modes, load-axial deformation curves, and load-strain relationships were analysed in this study. Additionally, the influence of outer steel tube thickness (3.0 mm, 4.0 mm, 5.0 mm) and sandwiched concrete strength grades (C50, C60, C70) on the axial compressive performance of the reinforced columns was investigated. The findings indicated that the proposed reinforcement method effectively mitigated the brittle failure associated with the original CFFT column. The external stainless steel tube played a crucial role in restraining lateral deformation of the internal CFFT column, thereby enhancing the axial compressive bearing capacity. Through theoretical analysis on the components in reinforced columns, a calculation formula for the axial compressive capacity of the reinforced column was derived according to the unified theory and the double-shear unified strength theory.

Axial compression test on strengthening concrete cylinders by Fe-SMA/FRP-HDPE tube and rubber concrete cladding layer

This paper proposed a new method to strengthen and repair concrete columns, which combined active and passive confinement. The method involved the use of iron-based shape memory alloy (Fe-SMA) strips to quickly exert active confinement to these columns, followed by the use of fiber-reinforced polymer (FRP) and high-density polyethylene (HDPE) tubes as external passive confinement to improve the load-bearing capacity, durability, and ductility of concrete columns. Rubber concrete that performs high energy consumption and certain strength was used as the cladding layer to improve the impact resistance of the concrete column. This paper explored the effect of this method on the bearing capacity performance of concrete columns through axial compression tests and set three test variables, including different net-spacing of Fe-SMA, different FRP wrapping forms, and different FRP layers. The test outcomes showed that all three test variables obviously improved the load-bearing capacity and ductility of concrete columns, peculiarly when applying active confinement. Eventually, this paper proposed a theoretical model to predict the peak compressive strength of the specimen, which can provide a reference for designing this active-passive confinement strengthening method.

Axial compressive performance of thin-walled square steel tube concrete short column with built-in steel slag block

In the process of iron and steel production, steel slag is produced as waste. The steel slag processing method generally produces steel slag cement as a substitute for gravel and fine aggregates. Steel slag aggregates replace natural aggregate concrete used in concrete components. In addition, steel slag expansion can compensate for the shrinkage characteristics of concrete and steel pipes inside closed wet environments, and the outer steel tube hoop constraint can avoid late hydration expansion structure cracking. Through orthogonal testing, the wall thickness of the steel pipe (3 mm, 3.75 mm, 4.5 mm), content of the steel slag blocks (10 %, 15 %, 20 %) and particle size of the steel slag blocks (40–60 mm, 60–80 mm) were used as experimental variables to conduct axial compression tests on 9 groups of short columns made of slag aggregate concrete-filled thin-walled square steel tubes. Based on the analysis of the test process and displacement, strain, ductility and ultimate bearing capacity results, the failure pattern and mechanism of the short column specimens under axial compression were obtained, and a bearing capacity calculation formula was obtained according to the existing theoretical methods. The results indicate three failure patterns: local convexity, shearing and circumferential bulging. The factors influencing the bearing capacity, from most influential to least influential, are the particle size of the steel slag, the wall thickness of the steel pipe and the amount of steel slag. The Poisson's ratio of core concrete has an important effect on its passive binding force, which affects the longitudinal displacement and load-bearing capacity of the component. The deduced formula can be used to accurately calculate the ultimate bearing capacity of the square steel tube and steel slag concrete. This article transforms the drawbacks of steel slag concrete into advantages and, by combining the characteristics of steel tube concrete, proposes a new type of composite component that has a certain degree of innovation and application value.

Seismic Performance of Wall-Type Concrete-Filled Steel Tubular Column to H-Beam Connections with Internal Diaphragms

This study introduces a new internal diaphragm joint to connect steel beams with wall-type concrete-filled steel tubular (WCFST) columns. This study combines experimental research with numerical simulations for analysis. Firstly, one full-scale test specimen was designed and subjected to cyclic loading. The obtained failure mode and hysteresis curves illustrate that the joint specimens exhibit ample energy dissipation capacities. Subsequently, a reliable FE model was obtained based on experimental verification, and parametric analysis was conducted. The findings indicate that axial compression ratios critically affect the load-carrying capacity and displacement at failure, with a 2% reduction in capacity for each 0.1 increment in the ratio. The thicknesses of the column web and flange in the joint area are recommended to be 0.85 to 1.2 times and 1 to 1.2 times the beam flange thickness, respectively. The length of the internal diaphragm is advised to be between 0.2 and 0.3 times the width of the cross-section. Overall, these results significantly enrich our understanding of WCFST systems and will inform future design and construction best practices.

Experimental investigation on the seismic performance of square concrete/ECC filled stiffened high-strength steel tubular columns

Seismic action can lead to severe damage in the plastic hinge zone of concrete-filled steel tubular (CFST) columns, such as the localized buckling of the steel tubes and the crushing of the core concrete. Despite the numerous proposed cross-sectional configurations for CFST columns, the core concrete exhibits substantial damage under intense seismic action, making post-earthquake maintenance challenging. To mitigate the spalling of the core concrete under seismic action, this paper proposes the utilization of engineered cementitious composites (ECC), which is a cement-based composite material, for a certain height within the plastic hinge zone as a substitute for common concrete. Six square concrete/ECC-filled stiffened high-strength steel tubular (CFSHST) columns were fabricated and subjected to quasi-static tests. The effects of the yield strength of the steel tubes, cross-sectional configurations, and axial compression ratio on the seismic performance and failure modes of the CFSHST columns were investigated. Subsequently, a numerical analysis of these columns was conducted to discuss the effects of the compressive strength of the core concrete, the yield strength of the steel tubes, and the axial compression ratio on the seismic performance of the columns. Finally, a design formula for the load-bearing capacity of this type of column was established, and its accuracy was verified using experimental results and numerical model results. The results showed that the CFSHST columns with the ECC in the plastic hinge zone exhibited only minor cracks and no evident ECC spalling occurred. Moreover, the longitudinal steel bars were beneficial in alleviating the spalling issue of the core concrete in these columns. The proposed design formula for the load-bearing capacity can accurately predict the peak load of CFSHST columns.

Atmospheric pressure plasma-treated polyester fabrics for enhanced oil-water mixture separation

In this study, superhydrophilic polyester textiles through atmospheric pressure plasma treatment, targeting their use in oil-water mixture separation was developed. The effect of fabric treatment and grammage variations—79, 103, and 125 g m−2—on the efficiency of separation, flux rates, and overall performance of the separation column was evaluated. The surface properties of the fabricated polyester fabrics were evaluated using scanning electron microscopy and energy-dispersive X-ray spectroscopy to analyze their topographical and elemental composition. These analyses indicate APP treatment creates surface micropits and evenly distributes active oxygen, enhancing polyester's hydrophilicity without altering its elemental makeup. The investigation further explored the antifouling capabilities and durability of both the modified and unmodified textiles. Remarkably, the research revealed that utilizing a dual-layer arrangement of the modified textile, possessing a grammage of 125 g m−2, resulted in a flux recovery ratio of 98.66 %. Additionally, the application of a quintuple-layer structure of the modified fabric markedly augmented the separation efficacy to an excess of 99.90 %. Impressively, this high level of efficiency was maintained at 92.20 % even after five usage cycles, a testament to the increased hydrophilicity imparted by the atmospheric pressure plasma processing. Therefore, atmospheric pressure plasma-treated polyester fabrics have shown a promising behavior in the field of oil-water mixture separatrtion.