Pub Date : 2024-10-21DOI: 10.1016/j.desal.2024.118197
Qisheng Huang , Lei Sheng , Tao Wu , Lei Huang , Jia Yan , Meng Li , Zhenxin Chen , Hongguo Zhang
Capacitive deionization (CDI) technology is favored by researchers for its environmental friendliness and higher selectivity. Among a number of electrode materials, carbon-based nanomaterials are considered suitable materials for CDI electrodes due to their excellent chemical stability, better economic benefits, etc. However, the conductivity and hydrophilicity of pure carbon electrode materials are generally poor. Therefore, researchers have focused on carbon-based composites. This paper provides a comprehensive review of carbon‑carbon composite materials and various carbon-based materials composited with metal oxides, metal-organic frameworks (MOFs), and polymers. In addition, the article summarizes the ion storage mechanism of CDI. Finally, the article provides an outlook on the future applications of CDI. It could provide good guidance for designing carbon-based materials for capacitive deionization.
{"title":"Research progress on the application of carbon-based composites in capacitive deionization technology","authors":"Qisheng Huang , Lei Sheng , Tao Wu , Lei Huang , Jia Yan , Meng Li , Zhenxin Chen , Hongguo Zhang","doi":"10.1016/j.desal.2024.118197","DOIUrl":"10.1016/j.desal.2024.118197","url":null,"abstract":"<div><div>Capacitive deionization (CDI) technology is favored by researchers for its environmental friendliness and higher selectivity. Among a number of electrode materials, carbon-based nanomaterials are considered suitable materials for CDI electrodes due to their excellent chemical stability, better economic benefits, etc. However, the conductivity and hydrophilicity of pure carbon electrode materials are generally poor. Therefore, researchers have focused on carbon-based composites. This paper provides a comprehensive review of carbon‑carbon composite materials and various carbon-based materials composited with metal oxides, metal-organic frameworks (MOFs), and polymers. In addition, the article summarizes the ion storage mechanism of CDI. Finally, the article provides an outlook on the future applications of CDI. It could provide good guidance for designing carbon-based materials for capacitive deionization.</div></div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"593 ","pages":"Article 118197"},"PeriodicalIF":8.3,"publicationDate":"2024-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142528512","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}
Pub Date : 2024-10-19DOI: 10.1016/j.desal.2024.118225
Xuejie Guo , Tianjin Gu , Haocheng Yang , Qingyue Wang , Aiqi Wang , Keni Chen , Shouzheng Su , Xiaofei Zhang , Yonghao Zhang
The powder structure, poor surface wettability and biofouling significantly limited the application potential of ZIFs (zeolitic imidazolate frameworks) in uranium extraction from seawater. Herein, a superhydrophilic polyethyleneimine assisted zeolitic imidazolate frameworks foam embed silver (CPEZ8A) was successfully prepared by simple chemical cross-linking and in-situ growth methods to explore the effects of hydrophilic matrix and silver antimicrobial agent on the uranium adsorption properties of ZIFs materials. The mechanical property and water contact angle test of CPEZ8A foam were performed to confirm its higher compression stress (with 1.314 MPa) and surface superhydrophilic. Moreover, CPEZ8A foam displayed an excellent resistance to biological attachment after 7 days in algae solution. Importantly, CPEZ8A showed the maximum U (VI) uptake capacity (775.19 mg/g) with 4.37 times of pure ZIF-8 at nearly seawater pH and retained relative high U-uptake amount during the broad pH range (4.0–9.0). Ion competition experiments were also investigated to verify the CPEZ8A foam excellent selectivity (Kd = 15,072.1 mL/g). Notably, the removal rate of CPEZ8A foam reach 81.31 % in natural seawater and remain nearly 80 % in simulated contaminated seawater. Therefore, this work provides an effective strategy to develop highly efficient ZIFs adsorbents for uranium capture.
{"title":"Polyethyleneimine assisted zeolitic imidazolate frameworks foam embed silver to enhance the uranium recovery from seawater","authors":"Xuejie Guo , Tianjin Gu , Haocheng Yang , Qingyue Wang , Aiqi Wang , Keni Chen , Shouzheng Su , Xiaofei Zhang , Yonghao Zhang","doi":"10.1016/j.desal.2024.118225","DOIUrl":"10.1016/j.desal.2024.118225","url":null,"abstract":"<div><div>The powder structure, poor surface wettability and biofouling significantly limited the application potential of ZIFs (zeolitic imidazolate frameworks) in uranium extraction from seawater. Herein, a superhydrophilic polyethyleneimine assisted zeolitic imidazolate frameworks foam embed silver (CPEZ8A) was successfully prepared by simple chemical cross-linking and in-situ growth methods to explore the effects of hydrophilic matrix and silver antimicrobial agent on the uranium adsorption properties of ZIFs materials. The mechanical property and water contact angle test of CPEZ8A foam were performed to confirm its higher compression stress (with 1.314 MPa) and surface superhydrophilic. Moreover, CPEZ8A foam displayed an excellent resistance to biological attachment after 7 days in algae solution. Importantly, CPEZ8A showed the maximum U (VI) uptake capacity (775.19 mg/g) with 4.37 times of pure ZIF-8 at nearly seawater pH and retained relative high U-uptake amount during the broad pH range (4.0–9.0). Ion competition experiments were also investigated to verify the CPEZ8A foam excellent selectivity (<em>K</em>d = 15,072.1 mL/g). Notably, the removal rate of CPEZ8A foam reach 81.31 % in natural seawater and remain nearly 80 % in simulated contaminated seawater. Therefore, this work provides an effective strategy to develop highly efficient ZIFs adsorbents for uranium capture.</div></div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"593 ","pages":"Article 118225"},"PeriodicalIF":8.3,"publicationDate":"2024-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142528073","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}
Pub Date : 2024-10-19DOI: 10.1016/j.desal.2024.118226
Zihan Xu , Zhaohuan Mai , Yanhui Wu , Xinwu Li , Xinyu Zeng , Chunchun Meng , Guangming Li , Haochen Zhu
The use of nanofiltration membrane technologies for seawater desalination is one of the effective ways to solve the shortage of water resources. However, traditional commercial membrane cannot maintain the excellent rejection for a variety of salt ions in mixed salt solutions, while ensuring the excellent permeance flux. In this study, g-C3N4 functionalized nanofiltration membranes of special charge distribution on the surface were prepared by interfacial polymerization to investigate the rejection performance of mixed salt solution (Na2SO4/NaCl, CaCl2/NaCl). Compared with the traditional commercial nanofiltration membrane, the polyamide nanofiltration membrane intercalated with g-C3N4 has excellent rejection performance of a permeance flux of 50.76 Lm−2 h−1 and 50% retention improvement for both monovalent and divalent ions. In addition, the composite membrane has a good anti-fouling performance in both bovine serum albumin and humic acid solutions.
{"title":"Investigation on the rejection of mixed salt solution by g-C3N4 functionalized nanofiltration membrane","authors":"Zihan Xu , Zhaohuan Mai , Yanhui Wu , Xinwu Li , Xinyu Zeng , Chunchun Meng , Guangming Li , Haochen Zhu","doi":"10.1016/j.desal.2024.118226","DOIUrl":"10.1016/j.desal.2024.118226","url":null,"abstract":"<div><div>The use of nanofiltration membrane technologies for seawater desalination is one of the effective ways to solve the shortage of water resources. However, traditional commercial membrane cannot maintain the excellent rejection for a variety of salt ions in mixed salt solutions, while ensuring the excellent permeance flux. In this study, g-C<sub>3</sub>N<sub>4</sub> functionalized nanofiltration membranes of special charge distribution on the surface were prepared by interfacial polymerization to investigate the rejection performance of mixed salt solution (Na<sub>2</sub>SO<sub>4</sub>/NaCl, CaCl<sub>2</sub>/NaCl). Compared with the traditional commercial nanofiltration membrane, the polyamide nanofiltration membrane intercalated with g-C<sub>3</sub>N<sub>4</sub> has excellent rejection performance of a permeance flux of 50.76 L<span><math><mo>∙</mo></math></span>m<sup>−2</sup> h<sup>−1</sup> and 50% retention improvement for both monovalent and divalent ions. In addition, the composite membrane has a good anti-fouling performance in both bovine serum albumin and humic acid solutions.</div></div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"593 ","pages":"Article 118226"},"PeriodicalIF":8.3,"publicationDate":"2024-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142528441","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}
Pub Date : 2024-10-19DOI: 10.1016/j.desal.2024.118214
Yong Han , Tianye Yang , Qingrui Zhang , Xiaoqiang Guo , Tifeng Jiao
Exploring the mechanism of external electric field (EF) regulating the structure and crystallization of calcium sulfate crystal is of great significance for solving the problem of inorganic salt scale in many industrial processes such as desalination and heat exchange. Here, the dispersion-corrected Density Functional Theory (DFT-D) calculations and a series of experiments were carried out to investigate the influence of EF on crystal structure, mechanical property and crystallization of gypsum crystal. The results show that under the influence of EF, the conventional cell of the gypsum crystal shortens in the direction of lattice parameter b. The water layer and the CaO8 octahedron are deformed. The stiffness and hardness of gypsum crystals decreases. The attachment energy and surface energy of (020) plane increase significantly. Both DFT-D calculations and experiment characterization results indicate that EF promotes a regular growth of gypsum crystal mainly along in the direction of (020) plane. Our study results demonstrate the possibility of electrical regulation of calcium sulfate crystal growth to solve the industrial calcium sulfate scale problem.
探索外电场（EF）对硫酸钙晶体结构和结晶的调控机理，对于解决海水淡化和热交换等许多工业过程中的无机盐垢问题具有重要意义。本文通过色散校正密度泛函理论（DFT-D）计算和一系列实验研究了 EF 对石膏晶体结构、力学性能和结晶的影响。结果表明，在 EF 的影响下，石膏晶体的常规晶胞沿晶格参数 b 方向缩短，水层和 CaO8 八面体发生变形。石膏晶体的刚度和硬度降低。(020) 面的附着能和表面能显著增加。DFT-D 计算和实验表征结果都表明，EF 主要促进石膏晶体沿（020）面方向有规律地生长。我们的研究结果证明了电调控硫酸钙晶体生长以解决工业硫酸钙结垢问题的可能性。
{"title":"Insights into mechanism of electric field regulating calcium sulfate crystal structure and crystallization: A study by DFT calculation and experiment","authors":"Yong Han , Tianye Yang , Qingrui Zhang , Xiaoqiang Guo , Tifeng Jiao","doi":"10.1016/j.desal.2024.118214","DOIUrl":"10.1016/j.desal.2024.118214","url":null,"abstract":"<div><div>Exploring the mechanism of external electric field (EF) regulating the structure and crystallization of calcium sulfate crystal is of great significance for solving the problem of inorganic salt scale in many industrial processes such as desalination and heat exchange. Here, the dispersion-corrected Density Functional Theory (DFT-D) calculations and a series of experiments were carried out to investigate the influence of EF on crystal structure, mechanical property and crystallization of gypsum crystal. The results show that under the influence of EF, the conventional cell of the gypsum crystal shortens in the direction of lattice parameter b. The water layer and the CaO<sub>8</sub> octahedron are deformed. The stiffness and hardness of gypsum crystals decreases. The attachment energy and surface energy of (020) plane increase significantly. Both DFT-D calculations and experiment characterization results indicate that EF promotes a regular growth of gypsum crystal mainly along in the direction of (020) plane. Our study results demonstrate the possibility of electrical regulation of calcium sulfate crystal growth to solve the industrial calcium sulfate scale problem.</div></div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"593 ","pages":"Article 118214"},"PeriodicalIF":8.3,"publicationDate":"2024-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142528523","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}
Pub Date : 2024-10-19DOI: 10.1016/j.desal.2024.118227
Shengyi Wang , Cunxiu Zhang , Zhimeng Tang , Fangqiang Yuan , Kun Huang , Yichuan Zhang , Deen Sun , Mingming Guo , Sam Zhang
In the midst of the global water crisis, the ‘waste-to-treasure’ strategy, which includes desalination and wastewater recycling, is proving to be a promising approach. However, existing solar evaporators are hampered by challenges such as low photothermal conversion efficiency and significant heat losses. Here, we present an innovative solution that reduces the band gap of the material and improves the efficiency of light recycling. As a result, the microwave-treated graphite achieves a 15 % reduction in reflectivity and a 9 °C increase in surface temperature. In addition, the integration of this graphite with a hydrogel to modulate the interfacial wettability further optimizes the evaporation efficiency. When exposed to sunlight, the developed cone column evaporator achieves an impressive evaporation rate of 2.91 kg m−2 h−1, which is a significant increase of 663 % over the natural evaporation rate of a 3.5 wt% NaCl solution. Remarkably, no salt deposits were observed on the surface of the evaporator during the tests and the material exhibited excellent adsorption and desorption properties for pollutants, highlighting its potential for sustainable applications. These results provide valuable theoretical and practical insights for the design and development of high-efficiency solar evaporators.
{"title":"Microwave-treated layered graphite for highly efficient solar-powered seawater desalination and wastewater treatment","authors":"Shengyi Wang , Cunxiu Zhang , Zhimeng Tang , Fangqiang Yuan , Kun Huang , Yichuan Zhang , Deen Sun , Mingming Guo , Sam Zhang","doi":"10.1016/j.desal.2024.118227","DOIUrl":"10.1016/j.desal.2024.118227","url":null,"abstract":"<div><div>In the midst of the global water crisis, the ‘waste-to-treasure’ strategy, which includes desalination and wastewater recycling, is proving to be a promising approach. However, existing solar evaporators are hampered by challenges such as low photothermal conversion efficiency and significant heat losses. Here, we present an innovative solution that reduces the band gap of the material and improves the efficiency of light recycling. As a result, the microwave-treated graphite achieves a 15 % reduction in reflectivity and a 9 °C increase in surface temperature. In addition, the integration of this graphite with a hydrogel to modulate the interfacial wettability further optimizes the evaporation efficiency. When exposed to sunlight, the developed cone column evaporator achieves an impressive evaporation rate of 2.91 kg m<sup>−2</sup> h<sup>−1</sup>, which is a significant increase of 663 % over the natural evaporation rate of a 3.5 wt% NaCl solution. Remarkably, no salt deposits were observed on the surface of the evaporator during the tests and the material exhibited excellent adsorption and desorption properties for pollutants, highlighting its potential for sustainable applications. These results provide valuable theoretical and practical insights for the design and development of high-efficiency solar evaporators.</div></div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"593 ","pages":"Article 118227"},"PeriodicalIF":8.3,"publicationDate":"2024-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142528076","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}
Pub Date : 2024-10-19DOI: 10.1016/j.desal.2024.118223
Yanan Pan, Wencai Zhang
This study introduced a novel lithium/aluminum layered double hydroxide (Li/Al-LDH) nanosorbent fiber (Li-PNF) engineered for continuous lithium extraction from brine using a fixed-bed system. These fibers featured a three-dimensional interconnected mesh structure and were distinctively encapsulated with needle-like Li/Al-LDH, exhibiting a layer-by-layer configuration. Compared to conventional Li/Al-LDH, Li-PNFs demonstrated abundant mesoporous structure and larger average pore size, facilitating the mass transfer and molecular diffusion of Li+ ions. Li-PNFs possessed a static lithium adsorption capacity of approximately 13.0 mg/g, with notable selectivity against Na+ and K+. Additionally, the Li+ binding energy across three distinct sites within the atomic structure of Li-PNFs proved advantageous, particularly at the Triangle-site-Al-overlapping-O3, which reached −5.72 eV. Fixed-bed adsorption experiments confirmed that lower feed flow rates, higher initial lithium concentrations, and increased bed heights significantly enhanced the Li+ capture efficiency, achieving up to 23.83 % in a single fixed-bed experiment. Based on the prediction of adsorption penetration curves using four empirical models, it was found that the Clark and Thomas models could accurately predict the behavior of Li+ penetration through the bed. Fixed-bed desorption results indicated that optimal lithium recovery was achieved at lower feed rates, reduced lithium concentrations in the desorption solution, and elevated temperatures. Finally, the excellent cyclic adsorption/desorption performance and low preparation cost of Li-PNF further highlighted its potential for real industrial applications, offering a significant advancement in the field of lithium extraction technology.
{"title":"Enhanced continuous lithium extraction using self-designed porous nanosorbent fibers in a fixed-bed system: Optimization and mechanistic insights","authors":"Yanan Pan, Wencai Zhang","doi":"10.1016/j.desal.2024.118223","DOIUrl":"10.1016/j.desal.2024.118223","url":null,"abstract":"<div><div>This study introduced a novel lithium/aluminum layered double hydroxide (Li/Al-LDH) nanosorbent fiber (Li-PNF) engineered for continuous lithium extraction from brine using a fixed-bed system. These fibers featured a three-dimensional interconnected mesh structure and were distinctively encapsulated with needle-like Li/Al-LDH, exhibiting a layer-by-layer configuration. Compared to conventional Li/Al-LDH, Li-PNFs demonstrated abundant mesoporous structure and larger average pore size, facilitating the mass transfer and molecular diffusion of Li<sup>+</sup> ions. Li-PNFs possessed a static lithium adsorption capacity of approximately 13.0 mg/g, with notable selectivity against Na<sup>+</sup> and K<sup>+</sup>. Additionally, the Li<sup>+</sup> binding energy across three distinct sites within the atomic structure of Li-PNFs proved advantageous, particularly at the Triangle-site-Al-overlapping-O<sub>3</sub>, which reached −5.72 eV. Fixed-bed adsorption experiments confirmed that lower feed flow rates, higher initial lithium concentrations, and increased bed heights significantly enhanced the Li<sup>+</sup> capture efficiency, achieving up to 23.83 % in a single fixed-bed experiment. Based on the prediction of adsorption penetration curves using four empirical models, it was found that the Clark and Thomas models could accurately predict the behavior of Li<sup>+</sup> penetration through the bed. Fixed-bed desorption results indicated that optimal lithium recovery was achieved at lower feed rates, reduced lithium concentrations in the desorption solution, and elevated temperatures. Finally, the excellent cyclic adsorption/desorption performance and low preparation cost of Li-PNF further highlighted its potential for real industrial applications, offering a significant advancement in the field of lithium extraction technology.</div></div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"593 ","pages":"Article 118223"},"PeriodicalIF":8.3,"publicationDate":"2024-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142529125","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}
Pub Date : 2024-10-18DOI: 10.1016/j.desal.2024.118218
Dekang Pang , Lingfeng Liu , Xiaojing Zhang , Changsheng Guo , Jianbo Jia , Changyu Liu , Mengchen Zhang
Ion separation plays a vital role in physiological activities as well as in industrial processes such as desalination, resource utilization and energy conversion. Substantial progress has been made over the last decade in the research of two-dimensional (2D) graphene oxide (GO) membranes with nanofluidic channels, opening up a new horizon for membrane-based ion separation technology. This critical review focuses on the advances in GO nanofluidic membranes from ion transport behaviors to ion separation applications. Firstly, the fabrication strategies of GO membranes are summarized, involving constructions of in-plane and interlayer nanofluidic channels. Then, the mechanisms underlying ion transport behaviors through confined GO nanofluidic channels are disentangled by discussing the fundamental impact factors of internal and external channel microenvironments. In particular, the influences of physical structures (e.g. channel configurations and orientations), chemical features (e.g. functional groups, active sites and charge properties) and environmental stimuli (e.g. driving forces, pH conditions, and competing ions) are highlighted. Finally, the performances and application potentials of GO membranes for ion extraction, ion removal and ion transfer processes are showcased. It is expected to offer new insights into the future prospects of advanced 2D nanofluidic membranes, and pave the way for the development of ionic nanofluids-related science and technology.
离子分离在生理活动以及海水淡化、资源利用和能源转换等工业过程中发挥着至关重要的作用。近十年来，具有纳米流体通道的二维（2D）氧化石墨烯（GO）膜的研究取得了长足进展，为基于膜的离子分离技术开辟了新天地。这篇重要综述重点介绍了从离子传输行为到离子分离应用的 GO 纳米流体膜的研究进展。首先，总结了 GO 膜的制造策略，包括面内和层间纳米流体通道的构建。然后，通过讨论通道内部和外部微环境的基本影响因素，揭示了离子在封闭的GO纳米流体通道中的传输行为的基本机制。特别强调了物理结构（如通道构型和方向）、化学特征（如官能团、活性位点和电荷特性）和环境刺激（如驱动力、pH 值条件和竞争离子）的影响。最后，展示了 GO 膜在离子萃取、离子去除和离子转移过程中的性能和应用潜力。该研究有望为先进二维纳米流体膜的未来前景提供新的见解，并为离子纳米流体相关科学和技术的发展铺平道路。
{"title":"Ion separation with graphene oxide nanofluidic membranes: A review","authors":"Dekang Pang , Lingfeng Liu , Xiaojing Zhang , Changsheng Guo , Jianbo Jia , Changyu Liu , Mengchen Zhang","doi":"10.1016/j.desal.2024.118218","DOIUrl":"10.1016/j.desal.2024.118218","url":null,"abstract":"<div><div>Ion separation plays a vital role in physiological activities as well as in industrial processes such as desalination, resource utilization and energy conversion. Substantial progress has been made over the last decade in the research of two-dimensional (2D) graphene oxide (GO) membranes with nanofluidic channels, opening up a new horizon for membrane-based ion separation technology. This critical review focuses on the advances in GO nanofluidic membranes from ion transport behaviors to ion separation applications. Firstly, the fabrication strategies of GO membranes are summarized, involving constructions of in-plane and interlayer nanofluidic channels. Then, the mechanisms underlying ion transport behaviors through confined GO nanofluidic channels are disentangled by discussing the fundamental impact factors of internal and external channel microenvironments. In particular, the influences of physical structures (<em>e.g.</em> channel configurations and orientations), chemical features (<em>e.g.</em> functional groups, active sites and charge properties) and environmental stimuli (<em>e.g.</em> driving forces, pH conditions, and competing ions) are highlighted. Finally, the performances and application potentials of GO membranes for ion extraction, ion removal and ion transfer processes are showcased. It is expected to offer new insights into the future prospects of advanced 2D nanofluidic membranes, and pave the way for the development of ionic nanofluids-related science and technology.</div></div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"593 ","pages":"Article 118218"},"PeriodicalIF":8.3,"publicationDate":"2024-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142528072","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}
Pub Date : 2024-10-18DOI: 10.1016/j.desal.2024.118213
Gonzalo Gamboa , Patricia Palenzuela , Rodoula Ktori , Diego C. Alarcón-Padilla , Guillermo Zaragoza , Samar Fayad , Dimitros Xevgenos , Mar Palmeros Parada
Water scarcity in arid regions has driven the spread of desalination. These systems contribute to water access but come at an intensive energy cost, and lead to brine discharge and associated environmental impacts. This work aims to investigate emerging societal issues and tensions when developing and implementing a thermal desalination system to produce irrigation water in the South of Spain. This has been done in a demonstration system for solar desalination able to recover water and salts from desalination brine. For this purpose, a context-sensitive design exercise has been implemented. First, tensions between social values expressed by diverse stakeholders have been identified. Then, a set of technical scenarios for the full-scale implementation of the system were designed and evaluated, comparing them to conventional membrane desalination. The analysis indicates high economic and energy costs to avoid the environmental impacts of increasing water production.
{"title":"Thermal seawater desalination for irrigation purposes in a water-stressed region: Emerging value tensions in full-scale implementation","authors":"Gonzalo Gamboa , Patricia Palenzuela , Rodoula Ktori , Diego C. Alarcón-Padilla , Guillermo Zaragoza , Samar Fayad , Dimitros Xevgenos , Mar Palmeros Parada","doi":"10.1016/j.desal.2024.118213","DOIUrl":"10.1016/j.desal.2024.118213","url":null,"abstract":"<div><div>Water scarcity in arid regions has driven the spread of desalination. These systems contribute to water access but come at an intensive energy cost, and lead to brine discharge and associated environmental impacts. This work aims to investigate emerging societal issues and tensions when developing and implementing a thermal desalination system to produce irrigation water in the South of Spain. This has been done in a demonstration system for solar desalination able to recover water and salts from desalination brine. For this purpose, a context-sensitive design exercise has been implemented. First, tensions between social values expressed by diverse stakeholders have been identified. Then, a set of technical scenarios for the full-scale implementation of the system were designed and evaluated, comparing them to conventional membrane desalination. The analysis indicates high economic and energy costs to avoid the environmental impacts of increasing water production.</div></div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"593 ","pages":"Article 118213"},"PeriodicalIF":8.3,"publicationDate":"2024-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142561274","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}
Pub Date : 2024-10-18DOI: 10.1016/j.desal.2024.118210
Changyuan Dong, Wenpeng Hong, Lei Zhang, Jingrui Lan, Yan Li, Haoran Li
Ion migration-based moisture-electric generator holds the open-circuit voltage to power portable electronics, the Internet of Things, and wireless transmission. However, most devices still encounter challenges with the attainment of high-density power generation in continuous mode. Here, we introduce a sustainable and high-power density ion-selective bipolar moisture-electric generator that relies on Au-Al electrodes, capillary water supply, and interfacial evaporation. The device generates electricity by exploiting the salinity gradient between the capillary waterways in the photothermal and waste heat layers. This process is synergized by electrochemical reactions of the electrodes, which propel the migration of cations and anions through ion-selective bipolar hydrogels toward the intermediate waterway. It demonstrates a short-circuit current density of 52.2 A m−2 and a power density of up to 33.8 W m−2 over 0.5 cm × 0.5 cm electrodes. Connecting 13 devices in series in darkness successfully illuminates an LED lamp with a rated power of 1 W together with an operating voltage of 2.0–2.8 V. This work offers an off-grid, environmentally friendly, and affordable solution for high-density moisture power generation.
基于离子迁移的湿气发电装置可提供开路电压，为便携式电子设备、物联网和无线传输供电。然而，大多数设备在实现连续模式下的高密度发电方面仍面临挑战。在此，我们介绍一种可持续的高功率密度离子选择性双极湿气发电装置，它依赖于金-铝电极、毛细管供水和界面蒸发。该装置利用光热层和废热层毛细水道之间的盐度梯度发电。这一过程通过电极的电化学反应产生协同效应，推动阳离子和阴离子通过离子选择性双极水凝胶向中间水道迁移。在 0.5 厘米 × 0.5 厘米的电极上，它的短路电流密度为 52.2 A m-2，功率密度高达 33.8 W m-2。在黑暗中将 13 个装置串联起来，成功地点亮了一盏额定功率为 1 W、工作电压为 2.0-2.8 V 的 LED 灯。这项研究为高密度湿气发电提供了一种离网、环保且经济实惠的解决方案。
{"title":"Synergetic enhancement of moisture-electric generation through interfacial evaporation and active electrode","authors":"Changyuan Dong, Wenpeng Hong, Lei Zhang, Jingrui Lan, Yan Li, Haoran Li","doi":"10.1016/j.desal.2024.118210","DOIUrl":"10.1016/j.desal.2024.118210","url":null,"abstract":"<div><div>Ion migration-based moisture-electric generator holds the open-circuit voltage to power portable electronics, the Internet of Things, and wireless transmission. However, most devices still encounter challenges with the attainment of high-density power generation in continuous mode. Here, we introduce a sustainable and high-power density ion-selective bipolar moisture-electric generator that relies on Au-Al electrodes, capillary water supply, and interfacial evaporation. The device generates electricity by exploiting the salinity gradient between the capillary waterways in the photothermal and waste heat layers. This process is synergized by electrochemical reactions of the electrodes, which propel the migration of cations and anions through ion-selective bipolar hydrogels toward the intermediate waterway. It demonstrates a short-circuit current density of 52.2 A m<sup>−2</sup> and a power density of up to 33.8 W m<sup>−2</sup> over 0.5 cm × 0.5 cm electrodes. Connecting 13 devices in series in darkness successfully illuminates an LED lamp with a rated power of 1 W together with an operating voltage of 2.0–2.8 V. This work offers an off-grid, environmentally friendly, and affordable solution for high-density moisture power generation.</div></div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"593 ","pages":"Article 118210"},"PeriodicalIF":8.3,"publicationDate":"2024-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142528513","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}
Pub Date : 2024-10-18DOI: 10.1016/j.desal.2024.118192
Pamphile Ndagijimana , Baihui Cui , Xuehua Zhang , François Nkinahamira , Hongwei Rong , Dabin Guo , Benoit Rugabirwa , Jean Claude Hakizimana , Pancras Ndokoye , Jean Claude Nizeyimana
As water scarcity escalates globally, recycling and reusing water resources is crucial for ensuring sustainable access to clean water. Photothermal technology for seawater desalination and wastewater treatment applications is promising towards solving the demand for clean water. This review explores the innovative use of carbon-based sunlight absorbers for solar-driven steam generation, a key method for desalinating seawater and treating wastewater. Turning waste into wonder carbon absorbers materials could help solve the globe's escalating water crisis and thus, the exploration for valorizing waste resources including agricultural, food, paper, textile and plastic wastes to derive such absorbers sustainably were carefully reviewed. This review surveys recent advancements in engineering carbon-based materials from waste streams for photothermal water treatment, analyzing the interplay between composition, morphology, and performance. It also addresses the current limitations and suggests potential improvements. Solar evaporation systems have demonstrated feasibility but require optimization of absorbers morphology, chemical make-up and system integration to become viable for practical large-scale implementation. Furthermore, this review emphasizes the need for continued research and development to address existing challenges, underscoring the significance of this technology in providing a sustainable solution to the increasing global demand for clean water.
{"title":"Advances in carbon-based materials for solar-driven steam generation, desalination and water treatment","authors":"Pamphile Ndagijimana , Baihui Cui , Xuehua Zhang , François Nkinahamira , Hongwei Rong , Dabin Guo , Benoit Rugabirwa , Jean Claude Hakizimana , Pancras Ndokoye , Jean Claude Nizeyimana","doi":"10.1016/j.desal.2024.118192","DOIUrl":"10.1016/j.desal.2024.118192","url":null,"abstract":"<div><div>As water scarcity escalates globally, recycling and reusing water resources is crucial for ensuring sustainable access to clean water. Photothermal technology for seawater desalination and wastewater treatment applications is promising towards solving the demand for clean water. This review explores the innovative use of carbon-based sunlight absorbers for solar-driven steam generation, a key method for desalinating seawater and treating wastewater. Turning waste into wonder carbon absorbers materials could help solve the globe's escalating water crisis and thus, the exploration for valorizing waste resources including agricultural, food, paper, textile and plastic wastes to derive such absorbers sustainably were carefully reviewed. This review surveys recent advancements in engineering carbon-based materials from waste streams for photothermal water treatment, analyzing the interplay between composition, morphology, and performance. It also addresses the current limitations and suggests potential improvements. Solar evaporation systems have demonstrated feasibility but require optimization of absorbers morphology, chemical make-up and system integration to become viable for practical large-scale implementation. Furthermore, this review emphasizes the need for continued research and development to address existing challenges, underscoring the significance of this technology in providing a sustainable solution to the increasing global demand for clean water.</div></div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"593 ","pages":"Article 118192"},"PeriodicalIF":8.3,"publicationDate":"2024-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142573032","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}
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