ACS ES&T engineering最新文献

{"title":"Semi-solid State PVA-Sodium Silicate Gel Membrane Cell for Electrochemical Oxidation of Gaseous Acetaldehyde at Cobalt Immobilized Graphitic Carbon Nitride Electrode","authors":"Muthuraman Govindan,&nbsp;Elangovan Erusappan,&nbsp;Youngyu Choi and Daekeun Kim*,&nbsp;","doi":"10.1021/acsestengg.4c0050510.1021/acsestengg.4c00505","DOIUrl":"https://doi.org/10.1021/acsestengg.4c00505https://doi.org/10.1021/acsestengg.4c00505","url":null,"abstract":"<p >The removal of gas environmental pollutants from their gaseous state using electrochemical methods is a futuristic technology. The effective migration of ions to the electrode without liquid electrolyte plays a key role in facilitating the removal from the gaseous state. In this study, a poly(vinyl alcohol)-sodium silicate gel membrane and a cobalt-modified graphitic carbon nitride (Co-GCN) electrode were developed for the mineralization of a common air pollutant, acetaldehyde (AA). Confocal laser microscopy, electrochemical impedance spectroscopy, and SEM-EDS analysis demonstrated that the as-prepared gel membrane stably conducts ions with lower resistance. The analysis of Co-GCN using XRD, FTIR, and cyclic voltammetry show a possible coordination of cobalt ions with GCN. At a given applied potential of 0.8 V, 82% removal of AA (80 ppm in 1 h) was achieved. The electron transfer kinetics follow pseudo-first-order kinetics, as the variation in the removal rate is less over a wide range of AA feed concentrations. For applied potentials above 1 V, the complete formation of CO₂ was equivalent to AA removal, with a formation capacity of 1.37 g cm^–2 h^–1. The seed of this first attempt at gaseous AA mineralization may open a new way to remove environmental gaseous pollutants.</p>","PeriodicalId":7008,"journal":{"name":"ACS ES&T engineering","volume":"5 1","pages":"239–249 239–249"},"PeriodicalIF":7.4,"publicationDate":"2024-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143091696","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Spirulina-Based Multispecies Phototrophic Biofilm Anodic Biocatalyst Endures a Prolonged Dark Phase within Light–Dark Cycle Operations and Enhances Anodic Performance in Biophotovoltaic Cells","authors":"Mohd Golam Abdul Quadir,&nbsp;Nabajyoti Kalita and Pranab Goswami*,&nbsp;","doi":"10.1021/acsestengg.4c0044710.1021/acsestengg.4c00447","DOIUrl":"https://doi.org/10.1021/acsestengg.4c00447https://doi.org/10.1021/acsestengg.4c00447","url":null,"abstract":"<p >Phototrophs with heterotrophic bacterial consortium as an electrode biocatalyst are an emerging concept for developing naturally sustained biophotovoltaic systems. Herein, <i>Spirulina subsalsa</i>-based mixed heterotrophic bacterial community as an anodic catalyst in a microbial fuel cell (MFC) setup with ferricyanide catholyte in 78 days light–dark (16–8 h) cycle-based operation was investigated. The biofilm developed with <i>Spirulina</i> inducted a recalcitrant bacterial community comprising <i>Halomonas</i>, <i>Alcanivorax</i>, <i>Pelagibacterium</i>, and <i>Rhizobiales</i> as the major genera. In an extended dark phase (9 days) within the cyclic operation, a sequential shift of the metabolism from photosynthesis to fermentative states and an increased heterotrophic population were observed. Under direct contact with the graphite anode, the biofilm initiated oscillating open-circuit potentials in the MFC in response to the light–dark circadian trend. The MFC delivered maxima of 587 μW m^–2 and 418 μW m^–2 (at 10 kΩ) under the corresponding circadian and extended dark phases, respectively. The anodic potential shifted to a more negative value, reaching −415.5 mV in the dark starvation period. Analyses of electrode reaction rates (extracted from Tafel plots), corrosion potential, corrosion current, polarization resistance, and residual redox charges (extracted from cyclic voltammograms) were performed to understand the redox processes. Two redox peaks corresponding to 0.6 V (irreversible, extracellular) and 0.26 V (reversible, cell-surface attached) were attributed to redox mediation in this process. Additionally, catholyte-diffused ferricyanide interacts with the biofilm, getting trapped in the matrix polymeric structures, thus preventing the sudden cytotoxic elimination of cells and promoting oxidative charge accumulation over its surface, improving the anodic potential. Rapid respiratory oxygen consumption, the biofilm’s structural reorganization, and ferricyanide’s chemical speciation inside the biofilm were the primary factors that govern the anodic performance of the biofuel cell during the prolonged dark phase operations. The critical findings unveiled through this study advance our understanding of the resilience of phototroph-based multispecies anodic catalysts for developing biophotovoltaic devices for long-term operations.</p>","PeriodicalId":7008,"journal":{"name":"ACS ES&T engineering","volume":"5 1","pages":"60–76 60–76"},"PeriodicalIF":7.4,"publicationDate":"2024-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143091748","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Developing Surrogate Indicator for Prompt Adjusting of Ozonation Operation: Insight from Pilot-Scale Treatment Using China’s South-to-North Water Diversion Project Feedwater","authors":"Mei Han,&nbsp;Fang Zou,&nbsp;Yumeng Zhao*,&nbsp;Jinkuo Li,&nbsp;Hongdi Guo,&nbsp;Runzhi Wang,&nbsp;Dezhen Kong,&nbsp;Ruowei Xie and Jun Ma,&nbsp;","doi":"10.1021/acsestengg.4c0060410.1021/acsestengg.4c00604","DOIUrl":"https://doi.org/10.1021/acsestengg.4c00604https://doi.org/10.1021/acsestengg.4c00604","url":null,"abstract":"<p >Energy-intensive ozonation processes could potentially evolve to flexible ozone (O₃) dosing strategies that depend on variations of feedwater quality. Herein, we demonstrate a surrogate indicator using UV absorbance for timely indicating O₃ performance on controlling disinfection byproduct (DBP) formation tendency, which could enable prompt adjustment of O₃ operation in practical drinking water treatment plants (DWTPs). We specifically focused on treating the water sourced from the central route of China’s South-to-North Water Diversion (SNWD) Project at periods of high algae activity. We found that ozonation, positioned between the sand filter and carbon filter in a pilot-scale DWTP process, showed limited removal of typical DBP chloroform (CHCl₃) formed during prechlorination. However, it notably enhanced the elimination of CHCl₃ precursors and subsequently lowered the water’s susceptibility to secondary chlorination. Further, combining parallel factor analysis, Pearson correlation analysis, and two-dimensional correlation spectroscopy, we identified differential UV absorbance at 300 nm (Δ<i>A</i>₃₀₀) as a rapid detection proxy for assessing ozonation efficacy in controlling the DBP formation tendency in DWTP. The formation of CHCl₃ is highly dependent upon precursors of tryptophan and humic/fulvic acid II, which can be effectively indicated by Δ<i>A</i>₃₀₀. Additionally, the secondary chlorination induces a positive relationship between the CHCl₃ formation tendency and Δ<i>A</i>₃₀₀ at the primary reaction stage. As reaction time extends, this correlation becomes negative, which warrants careful consideration in practical use. Meanwhile, the influence of the ozone dosage and NaClO dosage is negligible on the Δ<i>A</i>₃₀₀ predictivity. Overall, this study advances the understanding of a surrogate indicator framework for prompt and real-time monitoring of ozonation performance.</p>","PeriodicalId":7008,"journal":{"name":"ACS ES&T engineering","volume":"5 3","pages":"631–641 631–641"},"PeriodicalIF":7.4,"publicationDate":"2024-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143608834","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Understanding Zerovalent Iron Exposure on Biological Nitrogen Removal: From Impacts to Potential Mechanisms","authors":"Wenbin Liu,&nbsp;Jianzheng Li,&nbsp;Tao Liu,&nbsp;Jiuling Li and Jia Meng*,&nbsp;","doi":"10.1021/acsestengg.4c0042610.1021/acsestengg.4c00426","DOIUrl":"https://doi.org/10.1021/acsestengg.4c00426https://doi.org/10.1021/acsestengg.4c00426","url":null,"abstract":"<p >Microorganism-dominated nitrogen conversion in wastewater treatment is of great significance to the nitrogen cycle. Until now, Fe⁰ has been widely used in sludge dewaterability, sulfide control, and bioenergy recovery. However, there is limited information about the comprehensive assessment of Fe⁰ on multiple biological nitrogen removal processes. Here, the impact of Fe⁰ dosage on the activity of ammonia-oxidizing bacteria, nitrite-oxidizing bacteria, anammox bacteria, and denitrifiers was evaluated. The results revealed that anammox has a more sensitive response to iron dosages (5.34 mM), and improved intracellular iron (216%) is the key to stimulating microbial metabolism by accelerating electron transfer, enzymatic activity, and ATP biosynthesis. Moreover, the long-term operation confirmed that additional Fe⁰ increased the relative abundance of ammonia-oxidizing bacteria, anammox bacteria, and denitrifiers, and the enriched nitrogen removal pathways further improved the nitrogen removal to 93.3% from 79.2% in an oxygen-limited system. This study helps us deeply understand the underlying mechanism of microbial activity stimulated by iron.</p>","PeriodicalId":7008,"journal":{"name":"ACS ES&T engineering","volume":"5 1","pages":"50–59 50–59"},"PeriodicalIF":7.4,"publicationDate":"2024-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143091735","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Highly Efficient Recovery of Phosphate from Water Using Cerium Carbonate Hydroxide-Decorated Magnetic Biochar: A Slow-Release Phosphate Fertilizer for Agricultural Reuse","authors":"Jianhua Qu,&nbsp;Siqi Wang,&nbsp;Ziwei Li,&nbsp;Shuqi Wei,&nbsp;Fuxuan Bi,&nbsp;Shaojuan Yan,&nbsp;Hui Yu,&nbsp;Lei Wang and Ying Zhang*,&nbsp;","doi":"10.1021/acsestengg.4c0040710.1021/acsestengg.4c00407","DOIUrl":"https://doi.org/10.1021/acsestengg.4c00407https://doi.org/10.1021/acsestengg.4c00407","url":null,"abstract":"<p >Phosphate removal plays a pivotal role in alleviating eutrophication and maintaining water quality. Cerium (Ce) demonstrates considerable promise in phosphate removal, attributed to its strong affinity for phosphate ions. This study provides a dual utilization strategy for synthesizing Fe₂O₃- and CeCO₃OH-decorated hydrophilic porous biochar (Fe/Ce@HPBC), designed for phosphate recovery from eutrophic waters and followed by its application as a slow-release phosphate fertilizer. Fe/Ce@HPBC possessed excellent phosphate adsorption quantity, achieving a maximum uptake of 203.88 mg/g in accordance with the Sips model. Furthermore, the slow-release experiment demonstrated that Fe/Ce@HPBC used as a fertilizer after phosphate recovery could sustainably release 39.8% of its phosphate content within 28 days. Fe/Ce@HPBC-P could also significantly increase the effective phosphorus content of soil by 65.51% and promote the phosphorus uptake of maize seedlings by 70.36%. Mechanistic investigation revealed that the outstanding phosphate adsorption by Fe/Ce@HPBC was attributed to the formation of inner-sphere complexation through ligand exchange between phosphate and Ce(HCO₃)²⁺/Ce–OH, in addition to electrostatic attraction caused by enhanced surface protonation. Overall, this study contributes to the advancement of phosphate recovery techniques and promotes the development of sustainable agriculture by presenting an effective strategy for mitigating eutrophication.</p>","PeriodicalId":7008,"journal":{"name":"ACS ES&T engineering","volume":"4 12","pages":"3045–3056 3045–3056"},"PeriodicalIF":7.4,"publicationDate":"2024-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142844151","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Novel Insights into the Long-Term Thiosulfate Pretreatment for Enhanced Short-Chain Fatty Acids Production from Sludge Anaerobic Fermentation: Organics Transformation, Electron Transfer, and Microbial Cooperation","authors":"Boyi Cheng,&nbsp;Da Zhang,&nbsp;Jinqi Jiang,&nbsp;Tianwei Hao*,&nbsp;Samir Kumar Khanal,&nbsp;Weijun Zhang,&nbsp;Zongping Wang,&nbsp;Guanghao Chen and Gang Guo*,&nbsp;","doi":"10.1021/acsestengg.4c0051010.1021/acsestengg.4c00510","DOIUrl":"https://doi.org/10.1021/acsestengg.4c00510https://doi.org/10.1021/acsestengg.4c00510","url":null,"abstract":"<p >Thiosulfate-assisted anaerobic fermentation (AF) effectively converts waste activated sludge into high-value products (e.g., short-chain fatty acids (SCFAs)). However, the roles of thiosulfate in organics transformation, electron transfer, and microbial interactions within AF systems are not fully understood, especially under long-term operations. In this study, an 88 day long-term experiment was conducted to address this knowledge gap. The results indicated an average SCFA yield of 3625.1 mg COD/L and an acetate proportion of 49.4% with a thiosulfate dosage of 600 mg S/L. Model organic degradation tests revealed that thiosulfate functioned as an electron acceptor, facilitating NAD⁺/NADH transformation, stimulating the expression of protein complexes like cytochrome <i>c</i> to enhance electron transport, and lowering thermodynamic barriers of propionate and butyrate to acetate (Δ<i>G</i>1_propionate = −335.0 kJ/mol; Δ<i>G</i>2_butyrate = −113.8 kJ/mol). Molecular ecological networks analysis showed that thiosulfate strengthened cooperative relationships among biomarkers of hydrolytic bacteria (i.e., <i>Proteiniphilum</i>, <i>UBA5851</i>), acidogenic bacteria (i.e., <i>UBA4179</i>), and sulfur reducers (i.e., <i>JAEUSI01</i>). Functional gene analysis using random forest confirmed that thiosulfate upregulated the expression of key genes (e.g., 2-oxoacid ferredoxin oxidoreductase) associated with electron transfer and acidogenic metabolism. This study deepens our understanding of thiosulfate, facilitating electron transfer and strengthening microbial cooperation within AF systems.</p>","PeriodicalId":7008,"journal":{"name":"ACS ES&T engineering","volume":"5 1","pages":"226–238 226–238"},"PeriodicalIF":7.4,"publicationDate":"2024-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143091854","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Trace MnFe2O4 Boosts Polyphenol-Maillard Reaction and Humification Process for Value-Added Composting: Integrated Effect of Chemical and Enzymatic Catalysis","authors":"Yujiao Long,&nbsp;Hongmei Jin*,&nbsp;Haiyan Li,&nbsp;Ning Zhu,&nbsp;Enhui Sun,&nbsp;Chao Shan,&nbsp;Hongchao Li and Yun Cao,&nbsp;","doi":"10.1021/acsestengg.4c0041510.1021/acsestengg.4c00415","DOIUrl":"https://doi.org/10.1021/acsestengg.4c00415https://doi.org/10.1021/acsestengg.4c00415","url":null,"abstract":"<p >Promoting humification during composting is of pivotal significance for converting organic waste to value-added fertilizer. Traditional composting additives for enhanced humification commonly suffer from low efficiency and a large dosage. Herein, we presented a novel and effective technique with great application potential to promote humification during composting via simple addition of trace MnFe₂O₄, behind which the essential mechanism was interpreted from both chemical and biological perspectives. Results indicated that with an economical dosage of MnFe₂O₄ (0.02 wt %), the content of humic acid (HA) and humification index (HI) were increased by 15.2 and 18.7% in comparison with the control group, respectively. The chemical mechanism steering such enhanced humification was revealed through analysis of precursor substances evolution and HA structural characterization. Specifically, MnFe₂O₄ addition catalyzed the polyphenol-Maillard reaction, leading to rapid oxidation and subsequent polymerization of the precursor substances. Meanwhile, analysis of diversity and evolution of microbial communities as well as activities of laccase and peroxidase demonstrated that MnFe₂O₄ addition increased the relative abundance of laccase/peroxidase-producing bacteria and thus elevated the enzymatic activities of laccase/peroxidase, which played crucial roles in catalyzing polyphenol-Maillard reaction and humification. This study demonstrates that MnFe₂O₄ could serve as a promising composting additive to promote humification and thereby produce value-added composts.</p>","PeriodicalId":7008,"journal":{"name":"ACS ES&T engineering","volume":"4 12","pages":"3067–3079 3067–3079"},"PeriodicalIF":7.4,"publicationDate":"2024-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142844150","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Spatiotemporal Patterns and Mechanisms of Periphytic Biofilm-Induced Fe Accumulation in Paddy Fields","authors":"Jing Tao,&nbsp;Guanghui Liu,&nbsp;Ying Xu,&nbsp;Junzhuo Liu,&nbsp;Pengfei Sun* and Yonghong Wu*,&nbsp;","doi":"10.1021/acsestengg.4c0048410.1021/acsestengg.4c00484","DOIUrl":"https://doi.org/10.1021/acsestengg.4c00484https://doi.org/10.1021/acsestengg.4c00484","url":null,"abstract":"<p >A high content of iron (Fe) within paddy ecosystems can poison rice plants or increase the risk of migration from rice fields to pollute adjacent rivers and streams. Here, we found that paddy field periphytic biofilms, ubiquitous microbial aggregates that grow on the soil surface, function as potential <i>in situ</i> biointerceptors via Fe accumulation. This is because periphytic biofilms were discovered, according to a spatiotemporal distribution field survey, to have a high capacity for Fe accumulation. The Fe contents in the paddy field periphytic biofilms ranged from 12.40 to 50.60 g/kg at spatial distribution and from 18.24 to 56.53 g/kg at temporal distribution, revealing significant spatiotemporal patterns consistent with the Fe concentration in soils. Extracellular polymeric substance-dominated abiotic accumulation may be a key mechanism that accounts for no less than 30–46% of the Fe accumulation in periphytic biofilms. Periphytic biofilms that accumulate Fe hold potential in intercepting their migration from paddy soil to adjacent ecosystems, thus alleviating Fe poisoning in rice plants as well as minimizing pollution in the adjoining fields. Our findings suggest that the application of periphytic biofilms is a promising engineering measure for alleviating the negative effects of excessive Fe in paddy fields.</p>","PeriodicalId":7008,"journal":{"name":"ACS ES&T engineering","volume":"5 1","pages":"158–166 158–166"},"PeriodicalIF":7.4,"publicationDate":"2024-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143091852","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Humidity Effects on Sub-Ambient Direct Air Capture of CO2 with Amine Functionalized Mg-Al LDHs and MMOs","authors":"Guanhe Rim,&nbsp;Mingyu Song,&nbsp;Laura Proaño,&nbsp;Omid Ghaffari Nik,&nbsp;Surya Parker,&nbsp;Ryan P. Lively and Christopher W. Jones*,&nbsp;","doi":"10.1021/acsestengg.4c0050310.1021/acsestengg.4c00503","DOIUrl":"https://doi.org/10.1021/acsestengg.4c00503https://doi.org/10.1021/acsestengg.4c00503","url":null,"abstract":"<p >Supported amine-based CO₂ capture materials are promising direct air capture (DAC) sorbents due to their high CO₂ uptake capacity, tolerance to varied humidities, and acceptable energy requirements for sorbent regeneration. For the large-scale deployment of supported amine adsorbents for DAC, support materials must be cost-effective and readily available on a large scale. In this study, amine-impregnated Mg_<i>x</i>Al-CO₃ layered double hydroxides (LDHs) and Mg_<i>x</i>Al-O mixed metal oxides (MMOs) that can be produced with commercially available, earth-abundant chemicals are prepared, and their DAC performance is evaluated under a wide range of temperature (−20 to 25 °C) and humidity (0–85% RH) conditions. Although the 30 wt % poly(ethylenimine) (PEI)-impregnated LDHs and MMOs show moderate 400 ppm CO₂ uptakes (≤1 mmol/g) under dry conditions, impressive adsorption capacities are observed under humid conditions (70% RH) at −20 (3.2 mmol/g) and 25 °C (2.0 mmol/g). Furthermore, the sorbent materials demonstrate promising regenerability during 10 humid DAC cycles at a 25 °C adsorption temperature with a &lt;10% decrease in working capacity. However, a dramatic decrease in working capacity (∼40%) is observed after 10 humid DAC cycles at cold temperatures (−20 °C) due to reduced CO₂ capture kinetics, attributed to amine redistribution. Overall, this study demonstrates the complex behavior that can be observed for an adsorbent over widely varying humidity and temperature conditions, reinforcing the notion that practical adsorbents must be carefully selected for operation in specific climatic zones.</p>","PeriodicalId":7008,"journal":{"name":"ACS ES&T engineering","volume":"5 1","pages":"204–214 204–214"},"PeriodicalIF":7.4,"publicationDate":"2024-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acsestengg.4c00503","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143091760","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Pressurizing Distillate Membrane Distillation Assisted by Impedance-Based Liquid Entry Pressure Measurement for Effective Wetting Mitigation","authors":"Dejun Feng,&nbsp;Shaodan Xie,&nbsp;Wenting Zhou,&nbsp;Yuanmiaoliang Chen* and Zhangxin Wang*,&nbsp;","doi":"10.1021/acsestengg.4c0048710.1021/acsestengg.4c00487","DOIUrl":"https://doi.org/10.1021/acsestengg.4c00487https://doi.org/10.1021/acsestengg.4c00487","url":null,"abstract":"<p >Membrane wetting is a prominent challenge in the practical applications of membrane distillation (MD). In this study, we hypothesize that increasing the hydraulic pressure on the distillate side (<i>P</i>_d) can mitigate membrane wetting, an operation mode we refer to as pressurizing distillate membrane distillation (PDMD). To implement PDMD, an accurate measurement of the liquid entry pressure (LEP) of the membrane with the feed solution is essential. However, the conventional LEP measurement method struggles with solutions containing amphiphilic agents. Herein, we develop an impedance-based LEP measurement method and validate it by measuring the LEPs of a commercial poly(tetrafluoroethylene) (PTFE) membrane with ethanol–water mixtures. Further, we demonstrate that this method can accurately measure the LEPs of the PTFE membrane with solutions containing sodium dodecyl sulfate (i.e., a representative amphiphilic agent) by capturing the subtle changes of the feed solutions within the membrane. Additionally, we show that PDMD can effectively mitigate membrane wetting induced by various wetting agents, as the elevated <i>P</i>_d results in a transmembrane hydraulic pressure lower than the LEP of the membrane. Overall, our study provides an effective wetting mitigation approach that can be easily applied in practical MD and membrane contactor applications.</p>","PeriodicalId":7008,"journal":{"name":"ACS ES&T engineering","volume":"5 1","pages":"149–157 149–157"},"PeriodicalIF":7.4,"publicationDate":"2024-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143091759","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}