ACS ES&T engineering最新文献_第9页

Techno-Economic Analysis of Atmospheric Water Harvesting Across Climates 不同气候条件下大气集水的技术经济分析

IF 7.4

ACS ES&T engineering Pub Date : 2024-06-21 DOI: 10.1021/acsestengg.4c00098

Natalie Gayoso, Emily Moylan, Wenny Noha, Jingjing Wang and Anjali Mulchandani*,

{"title":"Techno-Economic Analysis of Atmospheric Water Harvesting Across Climates","authors":"Natalie Gayoso, Emily Moylan, Wenny Noha, Jingjing Wang and Anjali Mulchandani*, ","doi":"10.1021/acsestengg.4c00098","DOIUrl":"10.1021/acsestengg.4c00098","url":null,"abstract":"Drinking water scarcity is a global challenge as groundwater and surface water availability diminishes. The atmosphere is an alternative freshwater reservoir that has universal availability and could be harvested as drinking water. In order to effectively perform atmospheric water harvesting (AWH), we need to (1) understand how different climate regions (e.g., arid, temperate, and tropical) drive the amount of water that can be harvested and (2) determine the cost to purchase, operate, and power AWH. This research pairs thermodynamics with techno-economic analysis to calculate the water productivity and cost breakdown of a representative condensation-based AWH unit with water treatment. We calculate the monthly and annual levelized cost of water from AWH as a function of climate and power source (grid electricity vs renewable energy from solar photovoltaics (PV)). In our modeled unit, AWH can provide 1744–2710 L/month in a tropical climate, 394–1983 L/month in a temperate climate, and 37–1470 L/month in an arid climate. The levelized cost of water of AWH powered by the electrical grid is $0.06/L in a tropical climate, $0.09/L in a temperate climate, and $0.17/L in an arid climate. If off-grid solar PV was purchased at the time of purchasing the AWH unit to power the AWH, the costs increase to $0.40/L in an arid climate, $0.17/L in a temperate climate, and $0.10/L in a tropical climate. However, if using existing solar PV there are potential cost reductions of 4.25–5-fold between purchasing and using existing solar PV, and 2–3-fold between using the electrical grid and existing solar PV, with the highest cost reductions occurring in the tropical climate. Using existing solar PV, the levelized cost of AWH is $0.09/L in an arid climate, $0.04/L in a temperate climate, and $0.02/L in a tropical climate.","PeriodicalId":7008,"journal":{"name":"ACS ES&T engineering","volume":null,"pages":null},"PeriodicalIF":7.4,"publicationDate":"2024-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acsestengg.4c00098","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141507802","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}

引用次数: 0

Sulfate Radicals-Mediated Chemiluminescence Production with Peroxydisulfate and Hydroquinone as Coreactants: Mechanism and Environmental Applications 以过氧化二硫酸盐和对苯二酚为核心反应物的硫酸根自由基介导的化学发光：机理与环境应用

IF 7.4

ACS ES&T engineering Pub Date : 2024-06-21 DOI: 10.1021/acsestengg.4c0021910.1021/acsestengg.4c00219

Fuqiang Liu, Yang Liu, Hongyu Dong, Huixin Shao, Bin Su, Tianshu Zhou and Xiaohong Guan*,

{"title":"Sulfate Radicals-Mediated Chemiluminescence Production with Peroxydisulfate and Hydroquinone as Coreactants: Mechanism and Environmental Applications","authors":"Fuqiang Liu, Yang Liu, Hongyu Dong, Huixin Shao, Bin Su, Tianshu Zhou and Xiaohong Guan*, ","doi":"10.1021/acsestengg.4c0021910.1021/acsestengg.4c00219","DOIUrl":"https://doi.org/10.1021/acsestengg.4c00219https://doi.org/10.1021/acsestengg.4c00219","url":null,"abstract":"Chemiluminescence (CL) is an attractive method for real-time quantification of toxic contaminants or intermediates generated during advanced oxidation processes due to its high sensitivity, low detection limit, and wide linear range. In this study, we present an unprecedented intrinsic CL phenomenon observed in an alkaline aqueous solution containing hydroquinone (HQ) and peroxydisulfate (PDS, S2O82–). Mechanistic investigations unveil a two-stage process for CL production: sulfate radical (SO4•–) generation and CL emission. Initially, the highly oxidizing SO4•– are formed via the decomposition of PDS by semiquinone radicals, originating from the comproportionation reaction of HQ with benzoquinone that is generated by the reaction of HQ with OH– in the presence of dissolved oxygen. Subsequently, SO4•– promptly oxidizes the residual HQ to an excited-state light-emitting species, which returns to its ground-state, accompanied by a transient and intense light emission. Notably, HQ plays dual roles in the CL process by both participating in the generation of SO4•– and serving as the precursor of the light-emitting substrate. The proposed CL system is developed to quantify trace amounts of HQ and real-time monitor the degradation kinetics of phenols. These findings hold considerable significance in chemical analysis, intermediate identification, and advanced oxidation processes.","PeriodicalId":7008,"journal":{"name":"ACS ES&T engineering","volume":null,"pages":null},"PeriodicalIF":7.4,"publicationDate":"2024-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142228139","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}

引用次数: 0

Progress and Prospects for Applications of Extracellular Electron Transport Mechanism in Environmental Biotechnology 细胞外电子传递机制在环境生物技术中的应用进展与前景

IF 7.4

ACS ES&T engineering Pub Date : 2024-06-20 DOI: 10.1021/acsestengg.4c00077

Bongkyu Kim, Gahyun Baek, Changman Kim, Soo Youn Lee, Euntae Yang, Sangmin Lee, Taeyoung Kim, Joo-Youn Nam, Changsoo Lee, Kyu-Jung Chae, Hyung-Sool Lee, Hee-Deung Park and Jung Rae Kim*,

{"title":"Progress and Prospects for Applications of Extracellular Electron Transport Mechanism in Environmental Biotechnology","authors":"Bongkyu Kim, Gahyun Baek, Changman Kim, Soo Youn Lee, Euntae Yang, Sangmin Lee, Taeyoung Kim, Joo-Youn Nam, Changsoo Lee, Kyu-Jung Chae, Hyung-Sool Lee, Hee-Deung Park and Jung Rae Kim*, ","doi":"10.1021/acsestengg.4c00077","DOIUrl":"10.1021/acsestengg.4c00077","url":null,"abstract":"Extracellular electron transport (EET) is a biological process where microorganisms can donate electrons from the interior of their cells to external electron acceptors or act as electron acceptors to receive electrons from external sources and electrodes. This process often occurs in the surrounding environment or within biofilms, enabling the redox reactions essential for energy metabolism. This review evaluates the latest developments in electron transfer (EET) research in environmental biotechnology, showcasing its varied applications across bioelectrochemical systems (BES), including microbial fuel cells and microbial electrosynthesis for CO2 upcycling, as well as its utilization in non-BES such as anaerobic digestion and bioleaching for useful resource recovery. The review emphasizes the interdisciplinary approach of EET research, merging microbiology, chemistry, environmental engineering, material science, and system control engineering. This paper provides insights into the performance optimization of EET and the outlook for future industrial and commercial applications. The review also explores the potential applications of EET to mitigate global and environmental challenges, offering innovative biotechnological solutions that pave the way for a sustainable circular bioeconomy.","PeriodicalId":7008,"journal":{"name":"ACS ES&T engineering","volume":null,"pages":null},"PeriodicalIF":7.4,"publicationDate":"2024-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141513482","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}

引用次数: 0

In Situ Oxidative, Catalytic Oxidative, and Nonoxidative Electrocleaning of Fouled Conductive Membranes 污垢导电膜的原位氧化、催化氧化和非氧化电清洗

IF 7.4

ACS ES&T engineering Pub Date : 2024-06-18 DOI: 10.1021/acsestengg.4c00154

Najmul Haque Barbhuiya, and , Swatantra P. Singh*,

{"title":"In Situ Oxidative, Catalytic Oxidative, and Nonoxidative Electrocleaning of Fouled Conductive Membranes","authors":"Najmul Haque Barbhuiya,  and , Swatantra P. Singh*, ","doi":"10.1021/acsestengg.4c00154","DOIUrl":"10.1021/acsestengg.4c00154","url":null,"abstract":"Electroconductive membrane (ECM) is a major advancement in the field of membrane technology, which has the potential for fouling mitigation due to its various action mechanisms. However, electrocleaning of a laser-induced graphene (LIG)-based ECM has not been investigated for its potential fouling mitigation; furthermore, nonoxidative electrocleaning has not been explored for any ECMs. In this study, the use of a LIG-based ECM for fouling inhibition and cleaning of fouled ECMs was investigated via oxidative, catalytic oxidative, and nonoxidative electrocleaning for low levels of fouling and severe fouling, as low fouled membranes were easily cleaned. Crossflow water washing and backwashing showed only ∼5–10% flux recovery, while oxidative electrocleaning showed ∼60–80% flux recovery. On the other hand, in situ catalytic oxidative and nonoxidative electrocleaning showed ∼90–100% flux recovery. Oxidative and catalytic oxidative electrocleaning can cause damage to the LIG-based ECMs/filters under anodic potential. On the contrary, nonoxidative electrocleaning was found to extend the life of the ECMs/filters due to inhibition of the electrochemical oxidation and self-oxidation of the ECMs/filters. For severe fouling, oxidative and nonoxidative methods showed limited flux recovery, while catalytic oxidative electrocleaning showed ∼100% flux recovery. The study shows the advantage of nonoxidative electrocleaning for low fouling, while catalytic oxidative electrocleaning can address severe fouling with only 1–5 min of operation.","PeriodicalId":7008,"journal":{"name":"ACS ES&T engineering","volume":null,"pages":null},"PeriodicalIF":7.4,"publicationDate":"2024-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141513483","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}

引用次数: 0

Mechanism of Cation–Oxygen Bond Activation and K+/Na+ Synergistic Promotion of Silicate Phase Dissociation in Smelting Slag 阳离子-氧键活化和 K+/Na+ 协同促进冶炼渣中硅酸盐相解离的机理

IF 7.1

ACS ES&T engineering Pub Date : 2024-06-17 DOI: 10.1021/acsestengg.4c00205

Juanli Yuan, Jingbiao Liu, Zhixu Chen, Hong Deng, Xueming Liu, Zhang Lin

{"title":"Mechanism of Cation–Oxygen Bond Activation and K+/Na+ Synergistic Promotion of Silicate Phase Dissociation in Smelting Slag","authors":"Juanli Yuan, Jingbiao Liu, Zhixu Chen, Hong Deng, Xueming Liu, Zhang Lin","doi":"10.1021/acsestengg.4c00205","DOIUrl":"https://doi.org/10.1021/acsestengg.4c00205","url":null,"abstract":"Silicate phase was identified as the key phase of smelting slag and also the main constraint for its resource utilization. Therefore, unraveling the dissociation mechanism of silicate phase was crucial for enhancing the resource utilization of smelting slag. In this study, the activation of synthesized pure olivine was utilized as a research template to investigate the silicate phase activation mechanism. The optimal conditions for olivine activation were established as olivine:NaOH:KOH = 1:5:0.5 (molar ratio), roasting temperature of 700 °C, and roasting time of 3 h. Response surface methodology (RSM) was employed to verify the correlation of the main influencing factors on the activation effect in the order of mineral alkali molar ratio > temperature > time. The lattice site substitution mechanism and the transformation law of the physical phase of the activation process were elucidated by DFT calculations. The activation mechanism of silicate phase was revealed to involve: 1) OH– adsorption on cation sites, leading to the activation of cation–oxygen bonds and the formation of the hydroxyl compounds. 2) K+/Na+ created a synergistic effect to fill the cation vacancies, facilitating the gradual release of cations. This research aims to offer theoretical guidance for smelting slag treatment by providing a deeper understanding of the activation mechanism of silicate-type minerals.","PeriodicalId":7008,"journal":{"name":"ACS ES&T engineering","volume":null,"pages":null},"PeriodicalIF":7.1,"publicationDate":"2024-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141513484","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}

引用次数: 0

Mechanism of Cation–Oxygen Bond Activation and K+/Na+ Synergistic Promotion of Silicate Phase Dissociation in Smelting Slag 阳离子-氧键活化和 K+/Na+ 协同促进冶炼渣中硅酸盐相解离的机理

IF 7.4

ACS ES&T engineering Pub Date : 2024-06-17 DOI: 10.1021/acsestengg.4c0020510.1021/acsestengg.4c00205

Juanli Yuan, Jingbiao Liu, Zhixu Chen, Hong Deng, Xueming Liu* and Zhang Lin,

{"title":"Mechanism of Cation–Oxygen Bond Activation and K+/Na+ Synergistic Promotion of Silicate Phase Dissociation in Smelting Slag","authors":"Juanli Yuan, Jingbiao Liu, Zhixu Chen, Hong Deng, Xueming Liu* and Zhang Lin, ","doi":"10.1021/acsestengg.4c0020510.1021/acsestengg.4c00205","DOIUrl":"https://doi.org/10.1021/acsestengg.4c00205https://doi.org/10.1021/acsestengg.4c00205","url":null,"abstract":"Silicate phase was identified as the key phase of smelting slag and also the main constraint for its resource utilization. Therefore, unraveling the dissociation mechanism of silicate phase was crucial for enhancing the resource utilization of smelting slag. In this study, the activation of synthesized pure olivine was utilized as a research template to investigate the silicate phase activation mechanism. The optimal conditions for olivine activation were established as olivine:NaOH:KOH = 1:5:0.5 (molar ratio), roasting temperature of 700 °C, and roasting time of 3 h. Response surface methodology (RSM) was employed to verify the correlation of the main influencing factors on the activation effect in the order of mineral alkali molar ratio > temperature > time. The lattice site substitution mechanism and the transformation law of the physical phase of the activation process were elucidated by DFT calculations. The activation mechanism of silicate phase was revealed to involve: 1) OH– adsorption on cation sites, leading to the activation of cation–oxygen bonds and the formation of the hydroxyl compounds. 2) K+/Na+ created a synergistic effect to fill the cation vacancies, facilitating the gradual release of cations. This research aims to offer theoretical guidance for smelting slag treatment by providing a deeper understanding of the activation mechanism of silicate-type minerals.","PeriodicalId":7008,"journal":{"name":"ACS ES&T engineering","volume":null,"pages":null},"PeriodicalIF":7.4,"publicationDate":"2024-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142228138","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}

引用次数: 0

Exploring the Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) Production Potential of Total Petroleum Hydrocarbon Degrading Bacteria Using Oily Sludge Waste as Feedstock 探索以含油污泥废物为原料的总石油烃降解细菌生产聚（3-羟基丁酸-3-羟基戊酸）的潜力

IF 7.4

ACS ES&T engineering Pub Date : 2024-06-13 DOI: 10.1021/acsestengg.4c00063

Priya D. Patel, Rushika B. Patel and Nasreen S. Munshi*,

{"title":"Exploring the Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) Production Potential of Total Petroleum Hydrocarbon Degrading Bacteria Using Oily Sludge Waste as Feedstock","authors":"Priya D. Patel, Rushika B. Patel and Nasreen S. Munshi*, ","doi":"10.1021/acsestengg.4c00063","DOIUrl":"10.1021/acsestengg.4c00063","url":null,"abstract":"Though bioremediation of hazardous petroleum refinery waste (oily sludge) has been practiced for the last few decades, the present study proposes to obtain polyhydroxyalkanoate (PHA)-based bioplastic polymer from it as a valuable byproduct parallel to its treatment. In the present study, nine fast-growing and sodium benzoate degrading bacterial strains belonging to the genera Achromobacter, Pseudomonas, Acinetobacter, Ochrobactrum, and Pannonibacter were found to be PHA-positive. The screened bacterial cultures showed total petroleum hydrocarbon (TPH) degradation in the range of 31% to 91% from 1% oily sludge containing medium and could accumulate PHA in the range of 50% to 92%. The Fourier Transform Infrared (FTIR) interferogram of extracted PHA represented PHA-related functional groups, while proton nuclear magnetic resonance (HNMR) spectra showed chemical shifts corresponding to a −CH3 of 3HB (0.88 ppm) and 3HV (1.5 ppm) monomers, thus confirming it as poly(3-hydroxybutyrate-co-3-hydroxyvalerate) or P(3HB-co-3HV). The thermal features of extracted P(3HB-co-3HV) such as low melting temperature (Tm) and low % crystallinity (%Xc) are industrially more significant. Ochrobactrum ciceri strain AWIS01 was found to be the most efficient organism, showing 0.720 g/L P(3HB-co-3HV) production while degrading 90.06% TPH when 1% oily sludge was provided as the sole source of carbon. In the future, such bacteria can be used to produce bioplastic polymer from oily sludge.","PeriodicalId":7008,"journal":{"name":"ACS ES&T engineering","volume":null,"pages":null},"PeriodicalIF":7.4,"publicationDate":"2024-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141345646","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}

引用次数: 0

A New Method and Mechanism of Oxidation/Ammonia Leaching-Phosphoric Acid Synergistic Regulation of Nickel Smelting Slag for Graded High-Value Recovery of Iron and Nickel 氧化/氨浸出-磷酸协同调节镍冶炼渣分级高值回收铁和镍的新方法和机制

IF 7.4

ACS ES&T engineering Pub Date : 2024-06-11 DOI: 10.1021/acsestengg.4c0010110.1021/acsestengg.4c00101

Zhiren Wu, Fandongkun Meng, Zhixu Chen, Yan Zhang, Qian Wang, Hong Deng, Xueming Liu* and Zhang Lin,

{"title":"A New Method and Mechanism of Oxidation/Ammonia Leaching-Phosphoric Acid Synergistic Regulation of Nickel Smelting Slag for Graded High-Value Recovery of Iron and Nickel","authors":"Zhiren Wu, Fandongkun Meng, Zhixu Chen, Yan Zhang, Qian Wang, Hong Deng, Xueming Liu* and Zhang Lin, ","doi":"10.1021/acsestengg.4c0010110.1021/acsestengg.4c00101","DOIUrl":"https://doi.org/10.1021/acsestengg.4c00101https://doi.org/10.1021/acsestengg.4c00101","url":null,"abstract":"Nickel smelting slag contains high-grade iron and nickel and represents a valuable secondary resource, yet it is often relegated to disposal. Hydrothermal leaching is a prevalent technique for recovering valuable metals from nickel smelting slag. Due to the limited research on the process mechanism, the leaching effectiveness of iron and other valuable metals remains low. Typically the leaching solution is used mainly to recover nickel, with iron being discarded as an impurity, resulting in significant losses of target metal in the iron-rich solution. This paper introduces novel techniques for the synergistic regulation of cascade high-value recovery of iron–nickel from ammonia oxide leaching and phosphoric acid from nickel smelting slag, achieving efficient leaching of iron–nickel and the production of high-purity iron phosphate and a nickel-enriched solution. The mechanism of gradual leaching and nickel-amine stabilization of the key phases of nickel smelting slag controlled by diffusion under the action of ammonium persulfate was elucidated. The separation of iron and nickel in iron-rich solution was achieved by using different phosphate Ksp. Homogeneous 1 μm spherical FePO4 and nickel enrichment solution were synthesized. Also, the key control strategies of the process were outlined. This study provides a feasible approach for the resource utilization of solid waste from nonferrous metal smelting, especially the metal extraction, separation, and high-value utilization of iron-rich polymetallic waste residue.","PeriodicalId":7008,"journal":{"name":"ACS ES&T engineering","volume":null,"pages":null},"PeriodicalIF":7.4,"publicationDate":"2024-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141959059","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}

引用次数: 0

Reusable Silk-Based Mesoporous Membranes for Recovery of Rare-Earth Elements 用于回收稀土元素的可重复使用蚕丝基介孔膜

IF 7.4

ACS ES&T engineering Pub Date : 2024-06-10 DOI: 10.1021/acsestengg.4c0018410.1021/acsestengg.4c00184

Ryan A. Scheel, Jugal Kishore Sahoo, Logan D. Morton, Zhiyu Xia, Jacob R. Blum, Zaira Martin-Moldes and David L. Kaplan*,

{"title":"Reusable Silk-Based Mesoporous Membranes for Recovery of Rare-Earth Elements","authors":"Ryan A. Scheel, Jugal Kishore Sahoo, Logan D. Morton, Zhiyu Xia, Jacob R. Blum, Zaira Martin-Moldes and David L. Kaplan*, ","doi":"10.1021/acsestengg.4c0018410.1021/acsestengg.4c00184","DOIUrl":"https://doi.org/10.1021/acsestengg.4c00184https://doi.org/10.1021/acsestengg.4c00184","url":null,"abstract":"The extraction of rare-earth elements (REEs) from low-grade sources, including electronic waste (E-waste), has garnered significant interest as a means to supplement current REE manufacturing, which is primarily through unsustainable mining. REEs have proven invaluable in countless industries, from electronics to defense, but their supply is failing to keep up with demand. Herein, we demonstrate an important step toward environmentally friendly, biobased REE extraction using silk nanofibril (SNF) and SNF/silk-elastin-like protein (SELP) membranes functionalized with two lanthanide binding tags (LBT1 and LBT2). These membranes offer facile fabrication with clear scale-up potential while enabling highly specific REE binding and, crucially, reusability. Additionally, through specific protein engineering, we were able to improve the binding efficiency of terbium onto the SELP membranes. The bound REEs can then be recovered by simple acid leaching, after which the membrane can be reused for additional cycles. This membrane-based approach avoids environmentally harmful solvents used in traditional liquid–liquid extraction and could enable the recycling of REEs that would otherwise be disposed of as industrial or e-waste.","PeriodicalId":7008,"journal":{"name":"ACS ES&T engineering","volume":null,"pages":null},"PeriodicalIF":7.4,"publicationDate":"2024-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142228137","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}

引用次数: 0

Interplay between Membrane Wetting Resistance and the Carbon Dioxide Absorption Rate in a Membrane Contactor: The Critical Role of the Gas–Liquid Interface 膜接触器中膜润湿阻力与二氧化碳吸收率之间的相互作用：气液界面的关键作用

IF 7.4

ACS ES&T engineering Pub Date : 2024-06-07 DOI: 10.1021/acsestengg.4c0018010.1021/acsestengg.4c00180

Wenting Zhou, Yuanmiaoliang Chen, Dejun Feng, Lu Xiao, Xianhui Li and Zhangxin Wang*,

{"title":"Interplay between Membrane Wetting Resistance and the Carbon Dioxide Absorption Rate in a Membrane Contactor: The Critical Role of the Gas–Liquid Interface","authors":"Wenting Zhou, Yuanmiaoliang Chen, Dejun Feng, Lu Xiao, Xianhui Li and Zhangxin Wang*, ","doi":"10.1021/acsestengg.4c0018010.1021/acsestengg.4c00180","DOIUrl":"https://doi.org/10.1021/acsestengg.4c00180https://doi.org/10.1021/acsestengg.4c00180","url":null,"abstract":"Membrane wetting induced by liquid absorbents severely hinders the practical applications of a gas–liquid membrane contactor (GLMC) for carbon dioxide (CO2) capture. To overcome this challenge, membranes with enhanced wetting resistance have been developed, but their CO2 absorption rates have often been overlooked. Herein, we unveil the interplay between membrane wetting resistance and the CO2 absorption rate for different GLMC membranes and elucidate the underlying mechanisms. Specifically, two representative membranes were used in this study: a polyvinylidene fluoride (PVDF) membrane with interconnected pores and an anodic aluminum oxide (AAO) membrane with disconnected pores. For each membrane, we modify it using fluoroalkyl silane agents with different chain lengths to obtain a range of membranes with different wetting resistances. Through GLMC tests, we identify a trade-off between membrane wetting resistance and the CO2 absorption rate for the PVDF membranes, i.e., an enhanced wetting resistance leads to a lowered initial CO2 flux. In contrast, for the AAO membranes, the CO2 absorption rate is independent of the membrane wetting resistance. Using electrochemical impedance and ultrasonic time-domain reflectometry analysis, the interplay between membrane wetting resistance and the CO2 absorption rate can be explained by the change of the gas–liquid interfaces in the GLMC membranes. This study reveals the critical role of the gas–liquid interface in GLMC for CO2 capture, providing valuable insights into membrane development for environmental applications of GLMC.","PeriodicalId":7008,"journal":{"name":"ACS ES&T engineering","volume":null,"pages":null},"PeriodicalIF":7.4,"publicationDate":"2024-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141959322","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}

引用次数: 0