Desalination最新文献

{"title":"Ultrathin surface-amination-modified membrane with ion-charge shielding effect for ultraselective nanofiltration","authors":"Qiangqiang Song ,&nbsp;Yuqing Lin ,&nbsp;Ning Gan ,&nbsp;Hussain Sadam ,&nbsp;Yaguang An ,&nbsp;Zheng Wang ,&nbsp;Kecheng Guan ,&nbsp;Junyong Zhu ,&nbsp;Jing Wang ,&nbsp;Yatao Zhang ,&nbsp;Hideto Matsuyama","doi":"10.1016/j.desal.2024.118325","DOIUrl":"10.1016/j.desal.2024.118325","url":null,"abstract":"<div><div>While membrane-based separation represents the preeminent technology for addressing the global challenge of water scarcity through desalination and potable wastewater reuse, existing nanofiltration membranes with monocharged surface properties remain deficient at achieving high-precision selectivity for harmful constituents with varying chargeability. In response to these issues, a membrane fabrication strategy was devised in this study to achieve ultraselective separation; essentially, a neutral-charged polyamide-based membrane was prepared by grafting of polyallylamine (PAA) onto the terminus of carboxylic nanochannels. The PAA monomers, which had controllable amine sites, were aligned at the membrane interface to neutralize the surface charge and minimize the pore size. The newly developed ultrathin (~23-nm thickness) surface-aminated membrane, with intensified ion-charge shielding and promoted size-exclusion effects, achieved remarkably precise separation property for a wide range of solutes, including near-perfect rejection of mixed-charge multivalent ions, near-complete removal of various trace emerging contaminants (ECs), and high boron retention (&gt;74.7 %). The PAA-modified membrane demonstrated an exceptionally comprehensive desalination performance that exceeded the existing upper bound of ion permselectivity versus water permeability (14.2 L·m⁻²·h⁻¹·bar⁻¹), thereby surpassing state-of-the-art nanofiltration membranes.</div></div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"597 ","pages":"Article 118325"},"PeriodicalIF":8.3,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142746924","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A super-hygroscopic SA-MXene@LiCl composite membrane with fast ab/desorption kinetics for efficient sorption-based atmospheric water harvesting","authors":"Junhao Chen ,&nbsp;Mengyao Zhu ,&nbsp;Guang He ,&nbsp;Huiyu Yang ,&nbsp;Ziwei Deng ,&nbsp;Jiehao Du ,&nbsp;Xin Liu ,&nbsp;Jingjing Huang ,&nbsp;Shaojin Gu ,&nbsp;Bin Shang","doi":"10.1016/j.desal.2024.118319","DOIUrl":"10.1016/j.desal.2024.118319","url":null,"abstract":"<div><div>The daily water productivity of sorption-based atmospheric water harvesting (SAWH) materials is significantly limited by their low moisture sorption capacity and sluggish ab/desorption kinetics. Here, a thin, porous, mechanically stable and high LiCl-loading content super-hygroscopic SA-MXene@LiCl membrane (SM@LiCl) was fabricated via vacuum-assisted filtration and freeze-drying methods. The thin and porous characteristics of the cross-linked SA-MXene network significantly reduce moisture transport resistance, while the wrapped hygroscopic LiCl effectively enhances its moisture capture capacity. When applied to SAWH, this nanocomposite membrane demonstrates an impressive water uptake performance of 1.69 g g⁻¹ within 1 h at 45 % RH and releases over 65 % of absorbed water after only 0.5 h of sunlight irradiation (1 kW/m²). With its high moisture sorption capacity and rapid ab/desorption kinetics, it can operate for up to 16 cycles per day in indoor environment, resulting in a record daily water yield of 19.46 L kg⁻¹ at 45 % RH. The present study presents a straightforward approach for the development of high-quality sorbents with improved ab/desorption kinetics for SAWH.</div></div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"595 ","pages":"Article 118319"},"PeriodicalIF":8.3,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142748399","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Preparation of fully coated PEDOT: PSS film on MXene for high reliability capacitive deionization","authors":"Shasha Zhang,&nbsp;Yanshuang Zhao,&nbsp;Kaiwen Guo,&nbsp;Le Zhang,&nbsp;Rongli Fang,&nbsp;Shunjiang Huang,&nbsp;Yue Wang","doi":"10.1016/j.desal.2024.118306","DOIUrl":"10.1016/j.desal.2024.118306","url":null,"abstract":"<div><div>MXene (Ti₃C₂T_x) is a promising CDI electrode material with two-dimensional (2D) layer, which performs excellent capacitance, conductivity, interlayer reversibility and plentiful active sites. However, Ti layer of MXene is easily oxidized to TiO₂ by dissolved oxygen in water, which causes structural instability and affects its desalting performance. In this paper, the sandwich PEDOT:PSS@MXene film electrode was prepared by uniformly coating PEDOT:PSS film on the surface of MXene through template-assisted polymerization. The film improves the stability of the composite by protecting the Ti layer. The specific capacitance of PEDOT:PSS@MXene performs 185.5 F g⁻¹ at 5 mV s⁻¹. The desalination capacity of hybrid AC//PEDOT:PSS@MXene cell in 500 mg L⁻¹ NaCl solution is 35.8 mg g⁻¹. After 40 desalting cycles, the cell performs better retention rate than AC//MXene cell (82.5 %), which keeps 97.2 %. The morphology and structure of composite show no exists of TiO₂ after 40 desalting cycles, indicating that PEDOT:PSS as a coating film can achieve high reliability capacitive deionization of MXene.</div></div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"594 ","pages":"Article 118306"},"PeriodicalIF":8.3,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142658849","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Integrated solar-powered freeze desalination and water electrolysis system with energy recovery and storage for sustainable agriculture in desert environments","authors":"Nurettin Sezer,&nbsp;Sertac Bayhan","doi":"10.1016/j.desal.2024.118321","DOIUrl":"10.1016/j.desal.2024.118321","url":null,"abstract":"<div><div>Agricultural activities in remote desert locations face significant challenges due to high water and energy demands and the lack of necessary infrastructure. The use of portable diesel generators, while common in smallholder farmers, leads to substantial pollution on-site. Efficient utilization of naturally available energy and water sources for the supply of essential commodities would greatly support the execution of agricultural activities in desert climates. Freeze desalination offers many benefits over distillation processes, such as low energy demand, negligible fouling, scaling, or corrosion, and no requirement of pretreatment for purification. Besides, hydrogen fuel cell is a clean alternative to a diesel generator as it possesses high conversion efficiency and eliminates greenhouse gas (GHG) emissions and noise pollution. This study proposes a stand-alone solar-powered freeze desalination and electrolysis system for freshwater and green hydrogen production from brackish groundwater in remote desert regions. The system is equipped with several energy recovery and storage solutions such as cistern, ice storage air conditioning, and metal hydride canisters with fuel cell to efficiently utilize energy and water and compensate for fluctuations in solar irradiation. The integrated system is modeled and analyzed based on thermodynamic principles, and results demonstrated the daily capacity of producing 52.8 m³ freshwater, 6.3 MWh air conditioning, 177 kg hydrogen, and 2.4 MWh electricity using 10,785m² bifacial photovoltaics system. Moreover, the energetic and exergetic efficiency of the system is calculated as 17.8 % and 13.5% during day and 56 % and 34.9 % during night, respectively.</div></div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"595 ","pages":"Article 118321"},"PeriodicalIF":8.3,"publicationDate":"2024-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142748410","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Echelon extraction of valuable components from salt lake brine substrate","authors":"Xiangting Tang ,&nbsp;Jun Chen ,&nbsp;Ye Zhang ,&nbsp;Jianguo Yu ,&nbsp;Sen Lin","doi":"10.1016/j.desal.2024.118307","DOIUrl":"10.1016/j.desal.2024.118307","url":null,"abstract":"<div><div>Salt fields are indispensable for the salt lake industry, yet their substrates, which are rich in valuable resources accumulated over time by the formation of solid solution enrichment, always stand at a neglected position. In this study, the distribution and occurrence state of elements in the Mahai Salt Lake substrate were comprehensively investigated by multiple characterizations. The substrate was primarily found to consist of calcium-silica‑aluminum minerals, with significant concentrations of lithium (0.0053 %), strontium (0.1130 %), and rubidium (0.0266 %) adsorbed onto these mineralized phases. Besides, an echelon extraction was developed to exploit these valuable resources including hydrochloric acid leaching and segmented calcination-leaching coupled process. It was confirmed that over 95 % of rubidium and 93 % of strontium could be effectively extracted via hydrochloric acid leaching through cation exchange mechanisms. 80 % lithium was extracted by calcination-leaching coupled process with three cycles to conquer the interlayer structure of mineralized lithium, facilitating the occupation of Li⁺ lattice sites by H⁺.</div></div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"594 ","pages":"Article 118307"},"PeriodicalIF":8.3,"publicationDate":"2024-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142658811","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A typha orientalis-inspired 3D Janus solar evaporator with controllable wettability for highly efficient and stable solar desalination","authors":"Guoyan Yang ,&nbsp;Zuozhu Yin ,&nbsp;Qidong Zha ,&nbsp;Ritong Wang ,&nbsp;Yu Xie ,&nbsp;Yuhua Chen ,&nbsp;Zhen Hong ,&nbsp;Yidan Luo ,&nbsp;Mingshan Xue","doi":"10.1016/j.desal.2024.118318","DOIUrl":"10.1016/j.desal.2024.118318","url":null,"abstract":"<div><div>Solar-powered interfacial evaporators, though promising for seawater desalination and wastewater treatment, but suffer from the problems of monolithic structure and complex preparation. It is of great importance to develop a multi-layered solar evaporator that possesses stable and high-efficiency photothermal performance. Our research employs simple liquid-phase polymerization and chemical deposition methods to achieve this. The objective of this study is to develop a highly efficient solar evaporator, designated as SA/MWCNTs@PPy/MWCNTs-NH₂@PU (SMPMPU), by integrating stearic acid (SA), multi-walled carbon nanotubes (MWCNTs), polypyrrole (PPy), and aminated multi-walled carbon nanotubes (MWCNTs-NH₂) within a polyurethane (PU) matrix. Inspired by typha orientalis, this evaporator boasts a highly antibacterial, self-floating Janus bilayer structure. This double-layered Janus solar evaporator utilizes the capillary adsorption effect to regulate the flow of water. It slows down heat transfer and significantly improves energy utilization efficiency. The resulting SMPMPU solar evaporator demonstrates a solar steam conversion efficiency with an evaporation rate of 2.40 kg·m⁻²·h⁻¹, which is attributed to the material's efficient absorption of light energy. Its evaporation efficiency under one sun illumination reaches 92.76 %, which can be credited to the Janus interface facilitating the absorption and evaporation of water molecules. The Janus bilayer structured solar evaporator developed in this study holds great promise and is anticipated to find widespread applications in seawater desalination and other related fields.</div></div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"595 ","pages":"Article 118318"},"PeriodicalIF":8.3,"publicationDate":"2024-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142748407","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A comparative study of antibiotic treatment by different charged nanofiltration membranes","authors":"Zhiyu Liu,&nbsp;Hui Wen,&nbsp;Shihai Jiang,&nbsp;Jiajie Xu,&nbsp;J. Paul Chen","doi":"10.1016/j.desal.2024.118316","DOIUrl":"10.1016/j.desal.2024.118316","url":null,"abstract":"<div><div>Antibiotics are synthesized organic compounds for such applications as prevention of diseases. However, they have caused a series of ecotoxicological effects that can potentially be harmful to humans and living organisms. Nanofiltration (NF) can effectively remove antibiotics from many waste streams, such as pharmaceutical wastewater. NF membranes are always charged due to carboxyl and amino groups. This study aims to evaluate performance of negatively (nTFC), positively (pTFC), and dually (dTFC) charged NF membranes in treatment of several antibiotic compounds: ciprofloxacin, ofloxacin, tetracycline, amikacin, and erythromycin. The values of permeance were 26.1, 19.5, and 14.0 L/(m²·h·bar) for nTFC, dTFC, and pTFC membrane, respectively. The dTFC membrane worked well in both permeability and treatment of the antibiotics. The solution pH greatly influenced the removal efficiency of the nTFC and pTFC membranes, while it had less effect on the dTFC membranes. The results demonstrated that dTFC membrane was more efficient than nTFC and pTFC membranes. It would have great potentials in treatment of such industrial effluent as antibiotics-containing wastewater. Our findings would provide a workable approach for fabrication of NF membranes for better treatment of antibiotics and other similar ones with higher efficiencies and greater selectivity.</div></div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"597 ","pages":"Article 118316"},"PeriodicalIF":8.3,"publicationDate":"2024-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142746737","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Efficient removal of uranium and sulfate in acid contaminated groundwater by flow electrode capacitive deionization","authors":"Zhipeng Tang ,&nbsp;Yongmei Li ,&nbsp;Kaixuan Tan ,&nbsp;Guohui Wang ,&nbsp;Chunguang Li ,&nbsp;Longcheng Liu ,&nbsp;Zhenzhong Liu","doi":"10.1016/j.desal.2024.118304","DOIUrl":"10.1016/j.desal.2024.118304","url":null,"abstract":"<div><div>In-situ leaching (ISL) causes non-negligible groundwater pollution. It is urgent to remediate the groundwater after ISL activities. In this study, we evaluated the effectiveness of flow electrode capacitive deionization (FCDI) to treat a simulated groundwater, the uranium (U) and SO₄²⁻ concentration of which are comparable to groundwater in acid in-situ leaching (AISL) uranium mine for the first time. Moreover, the removal mechanism of U and SO₄²⁻ were investigated in-depth. It is found that the operational mode, applied voltage and initial SO₄²⁻ concentration significantly affect the removal of U and SO₄²⁻ by FCDI. The removal efficiency of U and SO₄²⁻ were above 98 % at 75 min under optimal condition, although U in groundwater mainly existed in the form of uncharged UO₂(SO₄), followed by UO₂²⁺ and UO₂(SO₄)₂²⁻. UO₂²⁺ and UO₂(SO₄)₂²⁻ in groundwater migrated into the two poles and were quickly absorbed by flow electrode, which promoted the dissociation of UO₂(SO₄) or complexation of UO₂(SO₄) with SO₄²⁻. In addition, the anion exchange membrane can absorb UO₂(SO₄) through complexation. These resulted in the efficient removal of U(VI). FCDI can reduce the U and SO₄²⁻ concentration of the contaminated water (<em>C</em>_U = 10 mg L⁻¹, <em>C</em>_SO4²⁻ = 5 g L⁻¹) to a value lower than the Chinese emission limit (U: 300 μg L⁻¹; SO₄²⁻: 250 mg L⁻¹) even after 18 cycles with each cycle operated for 120 min, which informed that FCDI system using activated carbon is of great potential for acidic contaminated water treatment.</div></div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"594 ","pages":"Article 118304"},"PeriodicalIF":8.3,"publicationDate":"2024-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142658848","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Assessment of a pilot continuous freezing desalination system with vacuum-assisted brine extraction","authors":"Ahmed T. Ghonim ,&nbsp;Hend A. Faiad ,&nbsp;Muhammad I. Rashad ,&nbsp;Shehab Ahmed ,&nbsp;Mohamed A. Farahat","doi":"10.1016/j.desal.2024.118305","DOIUrl":"10.1016/j.desal.2024.118305","url":null,"abstract":"<div><div>Freezing desalination (FD) is considered a potential alternative that addresses the shortage in water resources. FD commercialization is limited due to the intermittent nature of the FD process. An experimental investigation is conducted to a pilot continuous freeze desalination unit that employs vacuum-assisted brine extraction. The system is regarded as a first step to realize a continuous freeze desalination process that can be then commercialized. The proposed pilot FD unit has multiple brine extraction stages to reach the desired water salinity. Four distinct feed water salinity are tested. The results show that the unit has the potential to produce low-salinity water without the need for washing or crushing which causes significant mass loss. The results indicate that water is obtained at a salinity of 393 and 1225 ppm NaCl at feed water salinities equal 10,000 and 40,000 ppm NaCl, respectively. Furthermore, the system produces an approximate constant volume equal 850 mL which is around 28 % of feed water volume. The gain output ratio (GOR) of the system is 3.07, 2.97, 2.99 and 2.98 for feed water with salinity 10,000, 20,000, 30,000 and 40,000 ppm NaCl respectively.</div></div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"594 ","pages":"Article 118305"},"PeriodicalIF":8.3,"publicationDate":"2024-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142658844","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Removal of chloride ions from aqueous phase as layered double hydroxides via uptake strategies: A critical review","authors":"Xiaodan Zhao,&nbsp;Yunya Zheng,&nbsp;Qiaoling Zhu,&nbsp;Mingquan Cheng,&nbsp;Yiwei Zhang,&nbsp;Zhen Zhou","doi":"10.1016/j.desal.2024.118317","DOIUrl":"10.1016/j.desal.2024.118317","url":null,"abstract":"<div><div>Chloride ions (Cl⁻) are considered detrimental to water reuse across various sectors, and their selective removal presents significant challenges, making it a critical topic of interest in wastewater treatment. Recently, the precipitation of Cl⁻ as layered double hydroxides (LDHs) using various uptake strategies has garnered substantial attention. This review provides a comprehensive analysis of methods for transforming Cl⁻ into the form of LDH-Cl, encompassing mixed metal oxide (MMO), LDHs/calcined LDHs sorption, and Friedel's salt precipitation (FSP). The review delves into the Cl⁻ removal performance, mechanisms, reaction behaviors, and influencing factors of these methods. Specially, within the context of zero liquid discharge for industrial wastewater, the feasibility, recovery potential, and the pros and cons of these treatment processes are analyzed and compared. Among these methods, chloride binding by MMO is identified as the most promising approach for the effective removal of Cl⁻ from wastewater, given the challenges in high sludge yield encountered with the FSP method and the limited sorption capacity of LDHs/CLDHs. Finally, we propose several key strategies for improving Cl⁻ removal efficiency, which encompass mitigating side reactions, developing more reactive and cost-efficient agents, managing generated chemical sludge for resource utilization, and optimizing overall process design to ensure the long-term stability and reliability of the treatment system. These strategies are essential for the application of selective Cl⁻ removal technologies in engineering practice.</div></div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"595 ","pages":"Article 118317"},"PeriodicalIF":8.3,"publicationDate":"2024-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142748403","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}