Purification System Research Articles

Removal of Primamycin La from Milk Sample Using ZnCl2-Activated Biochar Prepared from Bean Plant as Adsorbent: Kinetic and Equilibrium Calculations

In this study, porous biochar (PvBC) was obtained by the pyrolysis of bean (phaseolus vulgaris) plant at 600 °C, and then activated biochar (PvBCZn) was synthesized by ZnCl2 activation at an equal biomass ratio (1.0:1.0). Some analytical techniques (SEM-EDX (scanning electron microscopy–energy dispersive X-ray spectroscopy), TGA/DTA (Thermogravimetric/Differential Thermal Analysis), BET (Brunauer–Emmett–Teller), FTIR (Fourier Transform Infrared Spectroscopy) and XRD (X-ray diffraction)) were used to characterize both PvBC and PvBCZn. In addition, their antibiotic sensitivity, water solubility, moisture content and swelling behavior were investigated in detail. Furthermore, both PvBC and PvBCZn were used for the adsorption of primamycin la, an anti-inflammatory drug used in veterinary medicine whose active ingredient is oxytetracycline, in a milk sample. The effect of both pH and adsorbent dosage on the adsorption capacity was investigated. Based on adsorption studies, while the maximum adsorption capacity (qmax) of PvBCZn was found to be 188.48 mg/g, that of PvBC was found to be 122.49 mg/g. According to these results, PvBCZn is an excellent adsorbent for the removal of primamycin la from milk samples. The Langmuir isotherm model and the pseudo-second-order kinetic model were more suitable to describe the adsorption behavior of primamycin la. The PvBCZn adsorbent exhibited rapid removal exceeding 75% in the first 20 min and reached equilibrium after about 50 min. In addition, studies on the desorption and reusability of PvBCZn were carried out under the same optimum experimental conditions. The qmax value of PvBCZn was found to be 171.40 mg/g even in the fifth cycle, confirming the idea that it is a potential adsorbent for the removal of primamycin la. At the same time, the antimicrobial activity of PvBCZn against Escherichia coli bacteria increases its potential to be used in both purification systems and hygiene products.

The use of green synthesized TiO2/MnO2 nanoparticles in solar power membranes for pulp and paper industry wastewater treatment

The pulp and paper manufacturing wastewater is as complicated as any other industrial effluent. A promising approach to treating water is to combine photocatalysis and membrane processes. This paper demonstrates a novel photocatalytic membrane technique for solar-powered water filtration. The method is based on creating green-prepared TiO2, and MnO2 nanoparticles (NPs) using Pomegranate peels and Seder leaf extracts and incorporation into polyvinylidene chloride to produce a novel water purification system that combines semiconductor photocatalysis with membrane filtration. The prepared heterostructure of the TiO2/MnO2 nanocomposite membrane provides photogenerated charge separation. To ensure chemical bonding at the membrane surface, Raman and Fourier transform infrared spectroscopy (FT-IR) were employed. The modified membrane’s hydrophilicity and roughness increased significantly. Additionally, the modified nanocomposite membrane’s porosity was measured. The integrated process demonstrated much higher removal of humic acid and high efficiency of wastewater treatment for pulp and paper. In sunlight, humic acid removal was 98% from synthetic wastewater. While using the produced membrane on pulp and paper effluent, these studies indicate that: in the dark, the removal was 50%, while in the sunlight, the removal increased to 70%, with a reduction in the COD from 1500 mg/L to 247 mg/L. Additionally, the TDS decreased from 1630 to 452 ppt in the sunlight. This research sheds light on how solar energy can clean wastewater from the pulp and paper industry while improving membrane separation. Also, an alternative source to sunlight was used to manufacture a photocatalytic membrane with high efficiency for wastewater treatment and an inexpensive price.

Modelling of the gas purification system for flue gas acid production

AbstractEstablishing a gas pressure model of the purification system to accurately estimate the system output pressure is a powerful guarantee to ensure the stable and efficient operation of the acid production process. This paper presents a study on the establishment of gas pressure models for three facilities in the purification system at the Guixi Smelter in China, including a pulse jet fabric filter, an electrostatic precipitator, and a drying tower. Through analysis of the operating mechanisms of these facilities, pressure mechanism models are established for the gas flows. Considering the nonlinearity and time‐varying nature of the model, an improved extended Kalman filter (EKF) algorithm is proposed to perform online identification of the unknown parameters within the model. Compared to the first‐order EKF, the improved algorithm achieves significantly better performance without incurring additional computational overhead. Field experiments on pressure estimation at the acid production site validate the reasonableness of the established models, as well as the efficacy of the proposed identification algorithm.

Ultralight aerogels with aligned channels for efficient solar driven interfacial evaporation of brackish water and remediation of saline soils

Solar driven interfacial evaporation (SDIE) holds significant potential in water treatment and soil improvement. This study innovatively designed a photothermal water purification and soil amelioration system based on salt crystallization migration. Its purpose is to efficiently purify brackish water and improve saline-alkali soil using solar stream evaporator. The core of this system lies in the utilization of cellulose nanofibers (CNF), vinyltrimethoxysilane (VTMO), and carbon nanotubes (CNT) as raw materials. The hydroxyl groups provided by CNF chemically crosslink with the methoxy groups provided by VTMO, and a gradient temperature reduction method is employed to shape a photothermal material (CNT-V-CNF) with aligned channels. CNT-V-CNF exhibits high light absorption (95 %), superhydrophilicity, and excellent thermal insulation properties, enabling a high photothermal evaporation rate (1.7 kg·m−2·h−1). The incorporation of the salt migration carrier significantly strengthens the salt tolerance of CNT-V-CNF, allowing it to maintain efficient and stable photothermal conversion performance in actual brackish water conditions. This achievement results in a daily water production capacity of 10.23 kg·m−2·d−1. After irrigating saline-alkaline soil with the purified freshwater for 52 days, the germination rate of wheat seeds sown in the soil has increased by approximately 65 %. The results of this study demonstrate the tremendous potential of SDIE centered on CNT-V-CNF in the agricultural irrigation and soil remediation practices.

A rapid turnaround time workflow for a cytological liquid biopsy assay using FNA supernatant specimens.

Genomic profiling is essential in the management of non-small cell lung cancer. However, this may often be challenging because of limited cytological tissue and extended turnaround time (TAT) for next-generation sequencing (NGS). This study aims to describe a rapid TAT workflow for molecular profiling using fine-needle aspiration (FNA) supernatants. A fully automated total nucleic acid extraction using the Genexus Integrated System was compared to a manual extraction using FNA supernatants from 50 patients with non-small cell lung cancer. Molecular profiling using the 50 gene Oncomine Precision Assay GX panel was performed and NGS results were compared with those of paired tissue samples. The FNA samples processed using the automated Genexus purification system (n=42) and the manual extraction method (n=8) showed comparable quality control metrics with a median total nucleic acid yield of 1230 ng (18-17720 ng) and 1068 ng (777-1740 ng), respectively. The Genexus purification system reduced the hands-on time from 120 to 30 minutes, enhancing workflow efficiency and decreasing the overall TAT. Of the 50 samples extracted, NGS was performed on 26 samples: seven via manual extraction and 19 using automated extraction. NGS quality control metrics were also comparable between both extraction methods. The overall TAT of the automated NGS workflow from specimen received to test result was 24 hours, providing rapid and reliable molecular results for timely clinical decision-making and improved patient outcomes.

Performance prediction of urban tunnel purification system based on the verified random number screening algorithm

Performance prediction of urban tunnel purification system based on the verified random number screening algorithm

Synthesis and Characterization of Pyridine-pyrrole-modified Carbon Nanotube Derivatives via Ylides

: The high dipolarophile structure of MWCNT compounds enables them to be used as a reactive 2π member in 1,3-dipolar cycloaddition reactions. N-substituted glycine ester compounds and employed 1,3-dipolar cycloaddition reactions involving azomethine-ylides for the synthesis of multiwalled carbon nanotube compounds that underwent covalent modification. Initially, Nsubstituted glycine esters (3a) and N-substituted glycine compounds were synthesized. Nsubstituted glycine (4a) and substituted aromatic aldehyde derivatives were reacted with the dipolarophilic MWCNTs, which have regioselectivity only on (6,6)-bonds, via azomethine ylide intermediates over a 1,3-dipolar cycloaddition reaction to obtain the target pyridine-pyrrolemodified carbon nanotube derivatives (6a-g). The compounds' structural characterizations were achieved using FTIR, Raman, NMR, TEM, UV-VIS, and TGA methods. The dispersibility of the compounds was evaluated in various solvents. The activity of each compound's antimicrobial properties against Escherichia coli was assessed. Based on the obtained results, it was concluded that the compounds, by the method employed, adsorbed Escherichia coli bacteria and decreased the bacterial concentration in their film form. According to the results, the compounds can be used in bacterial adsorption-based purification systems (the eradication of water and environmental pollutants) based on the results obtained.

Risk Factors Associated with Nosocomial Infections in The City of Goma (Case of CBCA-Virunga and Maternal Charity in the DRC)

a) Factors related to the hospital environment: 1. Absence or non-functionality of the triage department and the bacteriology department. 2. Insufficient drinking water not meeting the daily needs of patients/bed, i.e. an average consumption of 60 to 80 liters/bed/day, compared to 500 to 600 liters of water/bed/day recommended by WHO standards. 3. Absence of a wastewater management circuit from hospitalization services (no purification system or wastewater treatment), b). Factors related to the nursing staff: 4. Absence of a committee for the diagnosis and monitoring of NI (nosocomial infections). 5. Poor knowledge, attitudes and practices of healthcare staff and in PCI: lack of risk assessment, use of venous catheters beyond 72 hours, use of antibiotics beyond 7 days without antibiogram, irregularity of hand hygiene before and after administration of care. (The odds ratio of the assessment score: RE (Assessment Risk) = 1.7 [95% CI; [1.3-8.9]. After evaluating the infection prevention and control (IPC) score card, in these hospitals, the results were as follows: HGR CBCA-Virunga: 61.2% and HGR Maternal Charity: 65%. That is an average of 63.1%. This study identified overall; progress in terms of improving infrastructure, hospitalization conditions for patients and electrical energy. [Adjusted odds ratio=2.8, 95% CI: 1.6-4.2]. Conclusion: The absence of a committee for diagnosis and epidemiological surveillance of nosocomial infections in hospitals and the non-existence of provincial and national coordination for the fight against nosocomial infections in the health system in the DRC, favors the high prevalence of these infections in hospitals according to our study.

A Mini-Review on Lead Ion Removal Using Polymeric Nanocomposite Membranes from Aqueous Solutions

The rapidly increasing global population and industrialisation are the main causes of the problem of water contamination. Issues with heavy metals are the main cause of this contamination. At least 20 metals are considered toxic and one of the most toxic is lead (Pb). Even though lead is being used in various industries, 86% of lead is remarkably used in battery industries, contributing to lead pollution. Water is utilised extensively during the battery-making process, particularly for washing battery parts for recycling. Hence, the process water becomes heavily contaminated, majorly with Pb compounds. Accordingly, treating Pb-containing effluent is mandatory for humanity and industrial survival. The conventional purification techniques were not sophisticated and resulted in waste and complex effluents harmful to the environment, demanding more advanced purification systems. A non-destructive separation, known as membrane separation, is a well-established technique for treating wastewater containing heavy metal ions and producing high-quality treated effluent. Polymeric membranes are of primary interest, as they can be easily modified and compatible with different materials like polymers and nanoadditives to improve membrane performance. The performance is primarily evaluated based on porosity, hydrophilicity, permeability, rejection capacity and anti-fouling nature. This study compiles research on polymer nanocomposite membranes for lead removal from the last five years.

Optimized Analytical–Numerical Procedure for Ultrasonic Sludge Treatment for Agricultural Use

This paper presents an integrated approach based on physical–mathematical models and numerical simulations to optimize sludge treatment using ultrasound. The main objective is to improve the efficiency of the purification system by reducing the weight and moisture of the purification sludge, therefore ensuring regulatory compliance and environmental sustainability. A coupled temperature–humidity model, formulated by partial differential equations, describes materials’ thermal and water evolution during treatment. The numerical resolution, implemented by the finite element method (FEM), allows the simulation of the system behavior and the optimization of the operating parameters. Experimental results confirm that ultrasonic treatment reduces the moisture content of sludge by up to 20% and improves its stability, making it suitable for agricultural applications or further treatment. Functional controls of sonication and the reduction of water content in the sludge correlate with the obtained results. Ultrasound treatment has been shown to decrease the specific weight of the sludge sample both in pretreatment and treatment, therefore improving stabilization. In various experimental conditions, the weight of the sludge is reduced by a maximum of about 50%. Processed sludge transforms waste into a resource for the agricultural sector. Treatment processes have been optimized with low-energy operating principles. Additionally, besides utilizing energy-harvesting technology, plant operating processes have been optimized, accounting for approximately 55% of the consumption due to the aeration of active sludge. In addition, an extended analysis of ultrasonic wave propagation is proposed.

SmartBreathe: IoT-Integrated Community Air Purification System Enhancing Air Quality and Health in High-Pollution Urban and Industrial Areas

SmartBreathe: IoT-Integrated Community Air Purification System Enhancing Air Quality and Health in High-Pollution Urban and Industrial Areas

Pre-Commercial Demonstration of a Photosynthetic Upgrading Plant: Investment and Operating Cost Analysis

Pig farms have been identified as one of the most important sources of greenhouse gas emissions. This study demonstrates the production of vehicle biomethane in a demonstration prototype plant based on photosynthetic upgrading technology, where the CO2 and H2S present in biogas are consumed by a microalgae culture. The information collected during the prototype construction allowed for an assessment of the capital and operating costs of this novel biogas upgrading technology with other conventional systems. With this objective, the costs of the equipment comprising the biogas cleaning and purification system were calculated considering a biogas flow rate of 5 m3 h−1, corresponding to a small–medium biogas plant and an average pig farm size. The sustainability and competitiveness of the algae upgrading system and the low capital and operating costs vis à vis other upgrading technologies were proven. With a net energy production of 687 kWh day−1 and an annual profit of 30,348 € in a 3500 head pig farm, this technology can be easily installed in livestock farms, increasing the benefits and reducing the carbon footprint.

Affinity purification of the outer hair cell motor protein prestin using His-tag

ObjectiveThe high sensitivity and broad frequency selectivity of mammalian hearing are associated with the somatic motility of outer hair cells (OHCs) in the cochlea. This motility is considered to be induced by conformational changes of the motor protein prestin expressing in the lateral plasma membrane of OHCs. Since its identification in 2000, prestin has been actively investigated and its structure and function have gradually been elucidated. These successes are partly due to the development of efficient expression and purification system of the membrane proteins including prestin. To obtain further understandings of prestin, the development of various types of such systems will be essential. However, recent study protocols on membrane proteins have often employed HEK293 cells and have become complexed with expression genes carrying several proteins and peptides for stabilization and purification of the expressed proteins. In the present study, a simple expression and purification system using Chinese hamster ovary (CHO) cells and Hi-tag was developed. MethodsFull length gerbil prestin was transfected into modified mammalian expression vectors with C-terminal 6 × His-tag. After drug selection with G418 for 4 weeks, single colonies were isolated by limiting dilution method. Cell lines highly expressing prestin were selected (named 3D5, 4D7 and 3C8). These cells were gently disrupted using a Dounce tissue grinder. Membrane fractions were extracted by ultracentrifugation and affinity chromatography was performed. The efficiency of the purification process was evaluated by quantitative Western blotting using a standard protein. ResultsAmong the cell lines constructed, Western blotting analysis showed bands at around 100 kDa and the highest intensity was confirmed from the 3C8 cell line, indicating that this cell line has the highest expression of prestin molecules. The membrane fraction was therefore extracted from this cell line and subjected to the following purification procedure. It was found that 78.7 μg of prestin was purified from 2.0 × 109 CHO cells. ConclusionIn the present study, 78.7 μg of prestin was purified from 2.0 × 109 CHO cells, which stably expressing 6 × His-tagged prestin, by extracting cell membrane fractions and standard affinity chromatography for His-tag.

A novel hybrid low-temperature thermal catalysis and radiative sky cooling system for day and night air purification and cooling

Thermal catalytic oxidation is an air purification technology that can efficiently and stably degrade volatile organic compounds. However, using thermal catalysis to purify indoor air in the summer can cause problems of indoor overheating. Radiative sky cooling is a passive cooling method that dissipates heat through reflection and radiation, which can provide sub-ambient cooling during day and night. In this study, a novel hybrid low-temperature thermal catalysis and radiative sky cooling system for day and night air purification and cooling was proposed, which combined thermal catalysis with radiative sky cooling, and used low-temperature driven thermal catalysts to solve the problem of indoor overheating in summer. A numerical model of the hybrid system was established to simulate the formaldehyde degradation and cooling performance of the system under different operating conditions. The results show that under summer conditions with an average daily temperature of 35°C and humidity levels between 70% and 80%, the system produced a total of 665.29 m³/m2 of clean air after running for an entire day. The average single-pass conversion rate of formaldehyde was 0.46, and the maximum temperature difference between indoor and outdoor air was 5°C. This provides guidance for the integration of the hybrid system with buildings.

Unraveling influenza sentinel surveillance in Pakistan 2008-2024: Epidemiological insights during the pre and post pandemic period of COVID-19.

The coronavirus pandemic has substantially influenced the transmission pattern of other respiratory viruses. However, screening and detecting other respiratory pathogens was unheeded during this time to combat the COVID-19 pandemic. High virulence and re assortment factors intensify the importance of influenza virus surveillance for effective disease management. Therefore, the present surveillance study was designed to determine the influenza positivity rate from 2008-24. This study will provide integral support in depicting a panoramic representation of two respiratory-pandemic periods, 2010-11 and 2019-2021, for influenza and COVID-19 pandemics, respectively. An inferential cross-sectional study was conducted from 2008 to 2024 by collecting influenza surveillance data from twelve sentinel sites in Pakistan. Clinical and demographic data was recorded at sample collection time. Specimens were collected through nasopharyngeal/throat swabs and stored in viral transport medium (VTM) at the sentinel site laboratory at 2-4°C. Viral RNA was isolated from the samples using KingFisher TM Flex Purification System and MagMAX™ Viral/Pathogen Nucleic Acid Extraction Kit. Within 16 years, 78118 samples were tested for influenza, of which 7999 (10.2%) appeared positive. The positivity rate appeared very low in recent years, with only a 3.5% positivity rate observed in 2020. Influenza A strain H1N1pdm09 seemed to be the prominent strain (n=3407, 42.6%), followed by influenza B (n=2125, 26.6%). The positivity of influenza samples was 10.2% and recorded in patients where typical clinical representation of influenza was absent. Fewer samples were reported during the coronavirus pandemic, which might be because influenza screening was hindered and overlooked to combat the SARS-CoV-2 virus, and the patient threshold was very high for COVID-19 virus screening.

Risk-Based Inspection Analysis of Api 581 Pressure Safety Valve & Stripper Acid Gas Removal Unit at PT XY

The process involving the stripper equipment in the Amine Gas Recovery Unit (AGRU), which separates rich amine, is a crucial part of the natural gas purification system. The use of a pressure safety valve is essential to maintaining operational safety. Long-term mechanical damage can lead to equipment failures such as leaks, fires, and poisoning, negatively impacting production efficiency and personnel safety. Risk-Based Inspection (RBI) is a method for inspecting, preventing, and controlling incident risks through mathematical inspections related to Probability of Failure (POF) Analysis, Consequence of Failure (COF) Analysis, and Risk Evaluation, with the output being an inspection schedule. The study results include the probability of overpressure under fire scenarios (2,82504 x 10-08), overfilling (7,06261 x 10-07), failure to open (1,49 x 10-05), and leak (3,64 x 10-02), with the consequence category averaging E, indicating that the Matrik Risiko from these scenarios is high risk. The inspection schedule is set every four years because the remaining life is half the project duration, warranting inspections at a maximum interval of 10 years. This four-year interval is based on the regulations from the Ministry of Energy and Mineral Resources No. 38 of 2017. Operational conditions, such as frequent foaming in the AGRU influence it.

ENVIRONMENTAL ASPECTS OF DESIGNING TURBOCOMPRESSOR UNITS OF COMPRESSOR STATIONS OF MAIN GAS PIPELINES

The article examines the environmental aspects of creating turbo-compressor units for compressor stations of main gas pipelines. The aim of the study is to identify and analyze the main sources of environmental pollution arising from the operation of turbo-compressor units, as well as to analyze modern technical solutions aimed at reducing their negative impact on the environment. This goal is achieved through an analysis of the operational processes of turbo-compressor units, a review of literature sources and applicable regulations, as well as the systematization of many years of experience gained at JSC “SMNPO-Engineering” (Sumy, Ukraine) in the design and testing of similar equipment. The most important results of the work are as follows: sources of chemical, acoustic, and thermal pollution generated during the operation of turbo-compressor units with gas turbine drives and centrifugal compressors have been identified; a conclusion has been drawn about the priority of developing dry fuel combustion methods to reduce emissions of pollutants. It is noted that the application of catalytic exhaust gas purification systems is advisable for modernizing existing compressor stations to ensure compliance with environmental requirements without replacing or significantly reworking engine designs. Using a 16 MW gas turbine compressor unit as an example, an assessment of thermal pollution in the environment has been carried out. It has been concluded that reducing thermal pollution can be achieved by increasing the energy efficiency of turbo-compressor units, particularly through the application of complex working cycles of the drive, utilizing waste heat from exhaust gases, and creating energy technology complexes based on compressor stations of main gas pipelines for the production of electricity, heat, and cooling. The results of this work can be used in the development of environmentally more efficient turbo-compressor units, which is especially relevant in the context of global climate change and increasing requirements of international environmental regulations. Moreover, increasing the energy efficiency of turbo-compressor units will not only reduce environmental pollution but also lower energy consumption and improve the cost-effectiveness of gas transportation.

An ecofriendly pectin-co-montmorillonite composite hydrogel for the separation of contaminant metal ions from water

The aim of this study was to investigate the synthesis, characterization, and sorption performance of ecofriendly pectin-co-montmorillonite composite hydrogels for the separation of potentially toxic elements (PTEs) from water. Hydrogels were synthesized using an environmentally friendly method, incorporating montmorillonite (MMT) at proportions ranging from 0 to 10 % in the tridimensional pectin (PC) network. The composite hydrogels were characterized by Fourier-transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), and thermogravimetric analysis (TGA). Batch sorption studies were conducted to investigate the capacity to separate copper (Cu2+), nickel (Ni2+), manganese (Mn2+), zinc (Zn2+), cadmium (Cd2+), and hexavalent chromium (Cr6+) ions from water. Higher PTE separation efficiencies were found with hydrogels containing 1 % MMT, with greater selectivity for Cu2+ ions. An exhaustive sorption study revealed that the separation process of Cu2+ fits the pseudo-second-order kinetic model and Langmuir isotherm, with maximum sorption capacity (qmax) of ~36.8 mg of hydrogel per g of PTE. This indicates that PC-co-MMT composite hydrogels are efficient alternative sorbents for the selective separation of PTEs from water, with potential application in ecofriendly water purification systems.

Technology for removing PM2.5 in clean coal processes

Most countries primarily utilize thermal power to meet their energy needs. However, thermal power generation generates a substantial amount of pollutants, such as particulate matter (PM), SOX, and NOX. These pollutants not only damage backend turbines and related equipment but also pollute the environment; thus, controlling their emissions is critical.This study developed a system operating under high temperature by integrating heating, pneumatic conveying, dust particulate supply, and filter material transport systems. This setup enables the simulation of the entry of syngas with PM at the output of a gasification unit. The developed composite filtration system was analyzed under various operational parameters, including different temperatures, inlet air velocities, and mass flow rates of filter material, to examine the changes in the dust particulate size distribution at its outlet and its PM2.5 collection efficiency. In a series of tests, the collection efficiency of this system reached at least 95% at operating temperatures between 20°C and 600°C. Each 100°C increase in the operating temperature resulted in a 0.63% decrease in the PM2.5 collection efficiency. The findings of this study lay the foundation for the future development of high-temperature gas purification systems.

Immobilization of Erythrosine Dye in Polysiloxane to Fabricate a Cost-effective Renewable Antibiotic Film through Visible Light-induced Singlet Oxygen Generation

The advanced oxidation process (AOP) is the most effective strategy to remove volatile organic compounds that are considered to be one of the main pollutants adversely affecting the environment and human health. While metal-based semiconductors are widely considered as promising photocatalysts to remove pollutants through AOP systems, their low light absorption efficiency and poor processibility remain major issues to be utilized for a sustainable AOP system with low energy consumption. However, the organic dye, erythrosine, which can generate singlet oxygens by absorbing visible light, is considered an excellent substitute for metal-based photocatalysts for cheap renewable AOP systems. Accordingly, we here demonstrate a new hybrid membrane, wherein erythrosine molecules are embedded into films of polydimethylsiloxane. The polymeric networks therefore play an important role in enhancing the thermal stability and light absorption efficiency of dye molecules upon hybridization. In addition, the foamed structures of films to enhance their porosity and oxygen permeability are introduced via the fast evaporation of ethanol. As a result, the photocatalytic performance of dyes is significantly reinforced as the porosity of the membrane increases, which is proven by analyzing the degradation efficiency of 1,3–diphenylisobenzofuran with the presence of foamed and hybridized films. The photocatalytic ability of the formed hybrid films was well regenerated in three repeated recycles. Moreover, an optical parametric oscillator (OPO) laser system was used to successfully demonstrate that the singlet oxygen generated from the optimized hybrid film was well diffused into the surface of polymer matrix. Accordingly, the film could effectively sterilize S. aureus and E. coli in an aqueous solution. Therefore, this study suggests that the hybridization of polymer and dye without chemical modification can be an effective strategy to fabricate cheap and reusable porous membranes for a practical environment purification system.