Membranes最新文献_第10页

Comparison of Coagulation-Integrated Sand Filtration and Ultrafiltration for Seawater Reverse Osmosis Pretreatment. 用于海水反渗透预处理的混凝-集成砂滤与超滤的比较。

IF 3.3 4区工程技术

Membranes Pub Date : 2024-05-29 DOI: 10.3390/membranes14060125

Qingao Li, Lixin Xie, Shichang Xu, Wen Zhang

{"title":"Comparison of Coagulation-Integrated Sand Filtration and Ultrafiltration for Seawater Reverse Osmosis Pretreatment.","authors":"Qingao Li, Lixin Xie, Shichang Xu, Wen Zhang","doi":"10.3390/membranes14060125","DOIUrl":"10.3390/membranes14060125","url":null,"abstract":"The removal of dissolved organic matter (DOM) from seawater before the reverse osmosis (RO) processes is crucial for alleviating organic fouling of RO membranes. However, research is still insufficiently developed in the comparison of the effectiveness of integrating coagulation with ultrafiltration (UF) or sand filtration (SF) in the pretreatment stage of seawater reverse osmosis (SWRO) for the removal of DOM. In this study, we investigated the effect of pretreatment technologies on RO fouling caused by DOM in seawater, including the integration of coagulation and sand filtration (C-S pretreatment) and the integration of coagulation and ultrafiltration (C-U pretreatment). Both integrated pretreatments achieved comparable DOM removal rates (70.2% for C-U and 69.6% for C-S), and C-S exhibited enhanced removal of UV-absorbing compounds. Although C-U was more proficient in reducing the silt density index (below 2) compared to C-S (above 3) and improved the elimination of humic acid-like organics, it left a higher proportion of tyrosine-protein-like organics, soluble microbial by-product-like organics, and finer organics in the effluent, leading to the formation of a dense cake layer on RO membrane and a higher flux decline. Therefore, suitable technologies should be selected according to specific water conditions to efficiently mitigate RO membrane fouling.","PeriodicalId":18410,"journal":{"name":"Membranes","volume":"14 6","pages":""},"PeriodicalIF":3.3,"publicationDate":"2024-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11205350/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141450844","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Characterizing Macroporous Ion Exchange Membrane Adsorbers for Natural Organic Matter (NOM) Removal-Adsorption and Regeneration Behavior. 用于去除天然有机物 (NOM) 的大孔离子交换膜吸附器的特性--吸附和再生行为。

IF 3.3 4区工程技术

Membranes Pub Date : 2024-05-27 DOI: 10.3390/membranes14060124

Jon Wullenweber, Julia Bennert, Tomi Mantel, Mathias Ernst

{"title":"Characterizing Macroporous Ion Exchange Membrane Adsorbers for Natural Organic Matter (NOM) Removal-Adsorption and Regeneration Behavior.","authors":"Jon Wullenweber, Julia Bennert, Tomi Mantel, Mathias Ernst","doi":"10.3390/membranes14060124","DOIUrl":"10.3390/membranes14060124","url":null,"abstract":"Addressing the characterization of Natural Organic Matter (NOM) removal by functionalized membranes in water treatment, this study evaluates the effectiveness of two commercial ion-exchange membrane adsorbers: Sartobind® Q (with quaternary amines) and D (with tertiary amines). Using Suwannee River NOM (SRNOM) as a surrogate, Langmuir adsorption isotherms revealed maximum capacities (Qmax) of 2966 ± 153 mg C/m2 and 2888 ± 112 mg C/m2, respectively. Variations in flux from 50 to 500 LMH had a minimal impact on breakthrough times, proving low diffusion limitations. The macroporous (3-5 µm) functionalized cellulose-based membranes exhibited high permeabilities of 10,800 L/(h m2 bar). Q maintained positive zeta potential vs. pH, while D's zeta potential decreased above pH 7 due to amine deprotonation and turning negative above an isoelectric point of 9.1. Regeneration with 0.01 M NaOH achieved over 95% DOC regeneration for Sartobind® D, characterizing reversibility through a pH-swing. Cyclic adsorption showed that Q maintained its capacity with over 99% DOC regeneration, while D required acidic conditioning after the first regeneration cycle to mitigate capacity reduction and re-deprotonate the adsorber. These results have demonstrated the potential suitability of adsorber membranes, designed originally for biotechnological purposes, for the possible removal of disinfection byproduct precursors in drinking water treatment.","PeriodicalId":18410,"journal":{"name":"Membranes","volume":"14 6","pages":""},"PeriodicalIF":3.3,"publicationDate":"2024-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11205362/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141450842","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Pure Hydrogen and Methane Permeation in Carbon-Based Nanoporous Membranes: Adsorption Isotherms and Permeation Experiments. 纯氢和甲烷在碳基纳米多孔膜中的渗透：吸附等温线和渗透实验。

IF 3.3 4区工程技术

Membranes Pub Date : 2024-05-26 DOI: 10.3390/membranes14060123

Matthis Kurth, Mudassar Javed, Thomas Schliermann, Georg Brösigke, Susanne Kämnitz, Suresh K Bhatia, Jens-Uwe Repke

{"title":"Pure Hydrogen and Methane Permeation in Carbon-Based Nanoporous Membranes: Adsorption Isotherms and Permeation Experiments.","authors":"Matthis Kurth, Mudassar Javed, Thomas Schliermann, Georg Brösigke, Susanne Kämnitz, Suresh K Bhatia, Jens-Uwe Repke","doi":"10.3390/membranes14060123","DOIUrl":"10.3390/membranes14060123","url":null,"abstract":"This paper presents the results of adsorption and permeation experiments of hydrogen and methane at elevated temperatures on a carbon-based nanoporous membrane material provided by Fraunhofer IKTS. The adsorption of pure components was measured between 90 °C and 120°C and pressures up to 45 bar. The Langmuir adsorption isotherm shows the best fit for all data points. Compared to available adsorption isotherms of H2 and CH4 on carbon, the adsorption on the investigated nanoporous carbon structures is significantly lower. Single-component permeation experiments were conducted on membranes at temperatures up to 220 °C. After combining the experimental results with a Maxwell-Stefan surface diffusion model, Maxwell-Stefan surface diffusion coefficients Dis were calculated. The calculated values are in line with an empirical model and thus can be used in future multi-component modeling approaches in order to better analyze and design a membrane system. The published adsorption data fill a gap in the available adsorption data for CH4 and H2.","PeriodicalId":18410,"journal":{"name":"Membranes","volume":"14 6","pages":""},"PeriodicalIF":3.3,"publicationDate":"2024-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11205412/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141450857","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

In Situ-Grown Al₂O₃ Nanoflowers and Hydrophobic Modification Enable Superhydrophobic SiC Ceramic Membranes for Membrane Distillation. 原位生长 Al2O3 纳米流体并进行疏水改性，使超疏水性 SiC 陶瓷膜可用于膜蒸馏。

IF 4.2 4区工程技术

Membranes Pub Date : 2024-05-19 DOI: 10.3390/membranes14050117

Yuqi Song, Kai Miao, Jinxin Liu, Yutang Kang, Dong Zou, Zhaoxiang Zhong

{"title":"In Situ-Grown Al2O3 Nanoflowers and Hydrophobic Modification Enable Superhydrophobic SiC Ceramic Membranes for Membrane Distillation.","authors":"Yuqi Song, Kai Miao, Jinxin Liu, Yutang Kang, Dong Zou, Zhaoxiang Zhong","doi":"10.3390/membranes14050117","DOIUrl":"10.3390/membranes14050117","url":null,"abstract":"Membrane distillation (MD) is considered a promising technology for desalination. In the MD process, membrane pores are easily contaminated and wetted, which will degrade the permeate flux and salt rejection of the membrane. In this work, SiC ceramic membranes were used as the supports, and an Al2O3 micro-nano structure was constructed on its surface. The surface energy of Al2O3@SiC micro-nano composite membranes was reduced by organosilane grafting modification. The effective deposition of Al2O3 nanoflowers on the membrane surface increased membrane roughness and enhanced the anti-fouling and anti-wetting properties of the membranes. Simultaneously, the presence of nanoflowers also regulated the pore structures and thus decreased the membrane pore size. In addition, the effects of Al2(SO4)3 concentration and sintering temperature on the surface morphology and performance of the membranes were investigated in detail. It was demonstrated that the water contact angle of the resulting membrane was 152.4°, which was higher than that of the pristine membrane (138.8°). In the treatment of saline water containing 35 g/L of NaCl, the permeate flux was about 11.1 kg⋅m-2⋅h-1 and the salt rejection was above 99.9%. Note that the pristine ceramic membrane cannot be employed for MD due to its larger membrane pore size. This work provides a new method for preparing superhydrophobic ceramic membranes for MD.","PeriodicalId":18410,"journal":{"name":"Membranes","volume":"14 5","pages":""},"PeriodicalIF":4.2,"publicationDate":"2024-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11123319/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141087921","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of Soybean Oil on the Improvement of the Functionality of Edible Membrane-Type Food Packaging Films Based on Caseinate-Carboxymethyl Chitosan Compositions. 大豆油对改善基于酪蛋白-羧甲基壳聚糖成分的食用膜型食品包装薄膜功能的影响

IF 4.2 4区工程技术

Membranes Pub Date : 2024-04-30 DOI: 10.3390/membranes14050104

Amal M A Mohamed, Hosahalli S Ramaswamy

{"title":"Effect of Soybean Oil on the Improvement of the Functionality of Edible Membrane-Type Food Packaging Films Based on Caseinate-Carboxymethyl Chitosan Compositions.","authors":"Amal M A Mohamed, Hosahalli S Ramaswamy","doi":"10.3390/membranes14050104","DOIUrl":"10.3390/membranes14050104","url":null,"abstract":"Edible film biopolymers are gaining attention to tackle problems of plastic waste and food safety to alleviate environmental problems associated with plastic products in food packaging. In this study, caseinate-carboxymethyl chitosan (CA-CMCH) composite films were made with the incorporation of soybean oil (SO) using a casting technique. The influence of different soybean oil concentrations at 0, 0.5, and 1% (w/w) on physical, mechanical, barrier, and surface characteristics of films composed of caseinate-carboxymethyl chitosan (CA-CMCH) was evaluated. The brightest film (L* value of 95.95 ± 0.30) was obtained with the edible film made from the control group of samples with sodium caseinate (NaCA-100; 100% NaCA). The results also indicated that samples with 1% SO in NaCA-75 and CaCA-75 had lower water vapor permeability (WVP), while those with NaCA-50 and CaCA-50 showed higher values of WVP. For mechanical properties, this study found that incorporating soybean oil into the caseinate-carboxymethyl (CA-CMCH) composite films led to an enhancement of both tensile strength and elongation at break. The morphological structures, determined using SEM, of control and composite films showed compact and homogenous surfaces. Overall, the addition of soybean oil contributed to the improvement of the functional properties of the edible films, offering potential solutions to the environmental issues associated with plastic packaging and enhancing the safety and performance of food packaging.","PeriodicalId":18410,"journal":{"name":"Membranes","volume":"14 5","pages":""},"PeriodicalIF":4.2,"publicationDate":"2024-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11123354/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141087968","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Applying Nanofiltration to Decrease Energy Consumption and Sensitivity toward Feed Composition Fluctuations in Salt Production. 应用纳滤技术降低制盐过程中的能耗和对饲料成分波动的敏感性

IF 4.2 4区工程技术

Membranes Pub Date : 2024-04-29 DOI: 10.3390/membranes14050103

Marian Turek, Krzysztof Mitko, Paweł Skóra

{"title":"Applying Nanofiltration to Decrease Energy Consumption and Sensitivity toward Feed Composition Fluctuations in Salt Production.","authors":"Marian Turek, Krzysztof Mitko, Paweł Skóra","doi":"10.3390/membranes14050103","DOIUrl":"10.3390/membranes14050103","url":null,"abstract":"The only currently active industrial-scale plant that uses coal mine brines, located in Czerwionka-Leszczyny, uses ZOD (Zakład Odsalania Dębieńsko, the name of the plant's former owner) technology, based on mechanical vapor compression evaporators. The plant produces evaporated salt that meets the specifications for edible salt; however, the technology is highly energy-consuming. The presented work focuses on the modeling of ZOD technology if applied to the water treatment of the 'Ziemowit-650' coal mine. Using the results of bench-scale investigation of brine nanofiltration and a mathematical model of ZOD technology based on Czerwionka-Leszczyny performance, the energy consumption per ton of produced salt was estimated for two cases: (1) ZOD technology treating the 'Ziemowit-650' brine and (2) ZOD technology treating the permeate of nanofiltration (NF) working on the 'Ziemowit-650' brine. The sensitivity of the system was investigated in the range of -10% to + 10% of Cl-, SO42-, Mg2+, and Ca2+ concentration, assuming that the sodium concentration also changes to meet the electroneutrality requirement. The results show that nanofiltration pretreatment not only decreases energy consumption but it also makes salt production less sensitive to fluctuations in feed water composition.","PeriodicalId":18410,"journal":{"name":"Membranes","volume":"14 5","pages":""},"PeriodicalIF":4.2,"publicationDate":"2024-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11122864/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141087954","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Transmembrane Chemical Absorption Process for Recovering Ammonia as an Organic Fertilizer Using Citric Acid as the Trapping Solution. 使用柠檬酸作为捕集液回收氨作为有机肥料的跨膜化学吸收工艺。

IF 4.2 4区工程技术

Membranes Pub Date : 2024-04-29 DOI: 10.3390/membranes14050102

Ricardo Reyes Alva, Marius Mohr, Susanne Zibek

{"title":"Transmembrane Chemical Absorption Process for Recovering Ammonia as an Organic Fertilizer Using Citric Acid as the Trapping Solution.","authors":"Ricardo Reyes Alva, Marius Mohr, Susanne Zibek","doi":"10.3390/membranes14050102","DOIUrl":"10.3390/membranes14050102","url":null,"abstract":"Membrane contactors are among the available technologies that allow a reduction in the amount of ammoniacal nitrogen released into the environment through a process called transmembrane chemical absorption (TMCA). This process can be operated with different substances acting as trapping solutions; however, strong inorganic acids have been studied the most. The purpose of this study was to demonstrate, at laboratory scale, the performance of citric acid as a capturing solution in TMCA processes for recovering ammonia as an organic fertilizer from anaerobic digestor reject water using membrane contactors in a liquid-liquid configuration and to compare it with the most studied solution, sulfuric acid. The experiments were carried out at 22 °C and 40 °C and with a feed water pH of 10 and 10.5. When the system was operated at pH 10, the rates of recovered ammonia from the feed solution obtained with citric acid were 10.7-16.5 percentage points (pp) lower compared to sulfuric acid, and at pH 10.5, the difference decreased to 5-10 pp. Under all tested conditions, the water vapor transport in the system was lower when using citric acid as the trapping solution, and at pH 10 and 40 °C, it was 5.7 times lower. When estimating the operational costs for scaling up the system, citric acid appears to be a better option than sulfuric acid as a trapping solution, but in both cases, the process was not profitable under the studied conditions.","PeriodicalId":18410,"journal":{"name":"Membranes","volume":"14 5","pages":""},"PeriodicalIF":4.2,"publicationDate":"2024-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11123178/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141087926","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Correction: Dobrovskiy et al. The Transport Properties of Semi-Crystalline Polyetherimide BPDA-P3 in Amorphous and Ordered States: Computer Simulations. Membranes 2022, 12, 856. 更正：Dobrovskiy et al. 半结晶聚醚酰亚胺 BPDA-P3 在无定形和有序状态下的传输特性：计算机模拟。Membranes 2022, 12, 856.

IF 4.2 4区工程技术

Membranes Pub Date : 2024-04-29 DOI: 10.3390/membranes14050101

Alexey Y Dobrovskiy, Victor M Nazarychev, Igor V Volgin, Sergey V Lyulin

引用次数: 0

Editorial for the Special Issue "Preparation and Application of Advanced Functional Membranes". 高级功能膜的制备与应用 "特刊编辑。

IF 4.2 4区工程技术

Membranes Pub Date : 2024-04-26 DOI: 10.3390/membranes14050100

Annarosa Gugliuzza, Cristiana Boi

引用次数: 0

Enhancing the Permeate Flux Improvement of Direct Contact Membrane Distillation Modules with Inserted S-Ribs Carbon-Fiber Filaments. 利用插入式 S-Ribs 碳纤维丝提高直接接触膜蒸馏模块的渗透通量。

IF 4.2 4区工程技术

Membranes Pub Date : 2024-04-25 DOI: 10.3390/membranes14050098

Chii-Dong Ho, Yi-Wun Wang, Yi Chao, Thiam Leng Chew, Ming-Shen Jiang, Jian-Har Chen, Ching-Yu Li

{"title":"Enhancing the Permeate Flux Improvement of Direct Contact Membrane Distillation Modules with Inserted S-Ribs Carbon-Fiber Filaments.","authors":"Chii-Dong Ho, Yi-Wun Wang, Yi Chao, Thiam Leng Chew, Ming-Shen Jiang, Jian-Har Chen, Ching-Yu Li","doi":"10.3390/membranes14050098","DOIUrl":"10.3390/membranes14050098","url":null,"abstract":"Three widths of manufacturing S-ribs carbon-fiber filaments acting as turbulence promoters were implemented into the flow channel of direct contact membrane distillation (DCMD) modules to augment the permeate flux improvement in the present study. Attempts to reduce the disadvantageous temperature polarization effect were made by inserting S-ribs turbulence promoters in improving pure water productivity, in which both heat- and mass-transfer boundary layers were diminished due to creating vortices in the flow pattern and increasing turbulence intensity. The temperature polarization coefficient ttemp was studied and found to enhance device performance (less thermal resistance) under inserting various S-ribs carbon-fiber thicknesses and operating both cocurrent- and countercurrent-flow patterns. The permeate fluxes in the DCMD modules with inserted S-ribs carbon-fiber turbulence promoters were investigated theoretically by developing the mathematical modeling equations and were conducted experimentally with various design and operating parameters. The theoretical predictions and experimental results exhibited a great potential to considerably achieve permeate flux enhancement in the new design of the DCMD system. The DCMD module with inserted S-ribs carbon-fiber turbulence promoters in the flow channel could provide a relative permeate flux enhancement up to 37.77% under countercurrent-flow operations in comparisons with the module of using the empty channel. An economic consideration on both permeate flux enhancement and power consumption increment for the module with inserted S-ribs carbon-fiber filaments was also delineated.","PeriodicalId":18410,"journal":{"name":"Membranes","volume":"14 5","pages":""},"PeriodicalIF":4.2,"publicationDate":"2024-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11122939/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141087886","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0