Desalination最新文献_第10页

Effect of pore size distribution on the desalination performance of the selective layer of nanoporous atomically-thin membranes 孔径分布对纳米多孔原子薄膜选择层脱盐性能的影响

IF 9.9 1区工程技术

Desalination Pub Date : 2023-09-01 DOI: 10.1016/j.desal.2023.116645

Chun-Man Chow , Rohit Karnik

{"title":"Effect of pore size distribution on the desalination performance of the selective layer of nanoporous atomically-thin membranes","authors":"Chun-Man Chow , Rohit Karnik","doi":"10.1016/j.desal.2023.116645","DOIUrl":"https://doi.org/10.1016/j.desal.2023.116645","url":null,"abstract":"<div>Over the last decade, molecular simulations and experiments have shown that nanoporous atomically-thin membranes (NATMs) have the potential for high-permeance, high-selectivity separations, including seawater desalination. Realistic NATMs contain polydisperse pore sizes that could impede their performance, as large pores lead to salt leakage. This paper computationally examines the effect of pore size distributions (PSDs) on the desalination performance of the selective layer of NATMs by reverse osmosis (RO), considering size exclusion as the dominant selection mechanism. Analogous to thin-film composite RO membranes, the finite width of PSDs leads to a trade-off between water permeability and water/salt selectivity in NATMs. Tight PSDs with average pore sizes slightly below the size of the salt are needed to ensure high selectivity comparable to TFC membranes with high water permeance. Sealing of large, salt-permeable pores (e.g. by interfacial polymerization) limits salt leakage but substantially reduces water permeance. Introducing energy barriers that impede salt permeation by tuning nanopore structure and chemistry can make NATMs more robust to wider PSDs. In summary, some combination of control of PSDs, leakage mitigation, and pore functionalization is essential for NATMs to surpass the permeability/selectivity trade-off of polymeric RO membranes and achieve high water permeance with good salt rejection.</div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"561 ","pages":"Article 116645"},"PeriodicalIF":9.9,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"1812266","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}

引用次数: 1

Performance of immobilized microalgal strains for biodesalination of real seawater 固定化微藻菌株在真实海水生物脱盐中的性能

IF 9.9 1区工程技术

Desalination Pub Date : 2023-09-01 DOI: 10.1016/j.desal.2023.116704

Abdul Mannan Zafar , Hasan Al Mosteka , Ashraf Aly Hassan

{"title":"Performance of immobilized microalgal strains for biodesalination of real seawater","authors":"Abdul Mannan Zafar , Hasan Al Mosteka , Ashraf Aly Hassan","doi":"10.1016/j.desal.2023.116704","DOIUrl":"https://doi.org/10.1016/j.desal.2023.116704","url":null,"abstract":"<div>In this study, biodesalination was performed using four different microalgal strains (Euglena deses, Chlamydomonas reinhardtii, Trichormus variabilis, and Scenedesmus obliquus) in real seawater for the first time in immobilized method. Immobilized beads in the ratio of 1:1, 1:2, and 1:3 (biomass to sodium alginate), were applied directly to real seawater in nutrient-deprivation conditions. The chloride ion reduction was measured for 15 days continuously. The other parameters investigated were pH, chlorophyll, absolute cell count, and oxygen microsensor. For Cl− ion, the highest elimination capacity on day 15 was measured to 18.1 g.m−3.hr−1 for C. reinhardtii (1:1), the highest among all the studied strains and ratios. Among all the strains, the highest chlorophyll content of 234 ± 0.43 mg·L−1 was measured for Trichormus variabilis (1:1) on the 15th day, and cell leaching was measured by flow cytometer analysis with ∼6.14 × 108 cells·mL−1 were released from the beads. In oxygen microsensor tests, oxygen content decreased as depth was increased, indicating that growth occurred closer to the surface. Immobilization increased algae's salt tolerance capacity, resulting in the prolonged cellular life span. Biomass harvesting is not required if the algae can be consumed in the immobilization technique. The performance of biodesalination using an immobilized treatment method with more efficient salt-removing microalgal strain is recommended.</div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"561 ","pages":"Article 116704"},"PeriodicalIF":9.9,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"1616277","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}

引用次数: 1

Robust and versatile polypyrrole supramolecular network packed photothermal aerogel for solar-powered desalination 坚固和多功能聚吡咯超分子网络包装光热气凝胶用于太阳能海水淡化

IF 9.9 1区工程技术

Desalination Pub Date : 2023-09-01 DOI: 10.1016/j.desal.2023.116674

Xueting Zhao , Tingyuan Wang , Yuanyuan Jiang, Qianying Lu, Jiefeng Pan

{"title":"Robust and versatile polypyrrole supramolecular network packed photothermal aerogel for solar-powered desalination","authors":"Xueting Zhao , Tingyuan Wang , Yuanyuan Jiang, Qianying Lu, Jiefeng Pan","doi":"10.1016/j.desal.2023.116674","DOIUrl":"https://doi.org/10.1016/j.desal.2023.116674","url":null,"abstract":"<div>Solar-powered desalination is an emerging and sustainable water purification technology, that extends accessible clean water to relieve global water scarcity. Although great achievements have been made to develop interfacial photothermal materials, it is still challenging to simultaneously achieve high-level evaporation rates (>3 kg·m−2·h−1, 1 sun) and high-efficient energy conversion (>95 %) under 1 sun illumination. Herein, a polypyrrole supramolecular network-packed photothermal aerogel is designed and developed as solar-thermal evaporator to boost highly efficient solar-powered desalination. The photothermal aerogel integrates the photothermal, hydrophilic, and nanostructured polypyrrole supramolecular network to intensify solar-thermal energy utilization and reduce evaporation enthalpy, and the heat-insulating polysiloxane aerogel to enable mass transfer and suppress heat loss. The combined merits of the polypyrrole supramolecular network-packed photothermal aerogel promise outstanding evaporation rate of 3.61 kg·m−2·h−1 and remarkable solar-to-vapor conversion efficiency of 97.1 % under 1 sun illumination. Furthermore, polypyrrole supramolecular network imparts reliable salt resistance, cyclic stability, and environment tolerability for potential applications in solar seawater desalination. The comprehensive performance has considerable advantages over state-of-the-art materials. The study provides a new paradigm for the design of solar-thermal composites to advanced solar-powered desalination and contributes to future sustainable environmental and energy applications.</div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"561 ","pages":"Article 116674"},"PeriodicalIF":9.9,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"2619152","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}

引用次数: 0

Plasma-enhanced vanadium-based hybrid capacitive deionization for high selective removal of Pb2+ 等离子体增强钒基杂化电容去离子的高选择性去除Pb2+

IF 9.9 1区工程技术

Desalination Pub Date : 2023-09-01 DOI: 10.1016/j.desal.2023.116657

Yan Li , Huibin Liu , Wenchao Peng , Yang Li , Fengbao Zhang , Xiaobin Fan

{"title":"Plasma-enhanced vanadium-based hybrid capacitive deionization for high selective removal of Pb2+","authors":"Yan Li , Huibin Liu , Wenchao Peng , Yang Li , Fengbao Zhang , Xiaobin Fan","doi":"10.1016/j.desal.2023.116657","DOIUrl":"https://doi.org/10.1016/j.desal.2023.116657","url":null,"abstract":"<div>Lead ion is one of the toxic metal ions contaminants in wastewater, and its efficient removal is a critical challenge in wastewater treatment. Therefore, developing a low-cost hybrid capacitive-deionization (HCDI) technology with high adsorption capacity is imminent. Herein, we fabricated (NH4)2V10O25·8H2O (NVO) micro flowers with large layer spacing and achieved enhanced hydrophilicity and rich oxygen vacancies by Ar plasma treatment. The plasma-treated (NH4)2V10O25·8H2O (P-NVO) electrode exhibits high electrochemical performance (204.6 F/g at 1 A/g). Additionally, the P-NVO//active carbon (AC) cell displays a superior adsorption capacity (49.56 mg/g) than that of the NVO//AC cell in Pb(NO3)2) solution. The enhanced adsorption capacity can be attributed to the increased oxygen vacancies, improved hydrophilicity and ion-insertion mechanism induced by plasma treatment. More importantly, the P-NVO//AC cell holds a superior regeneration performance and excellent ion selectivity, as confirmed by experimental results and DFT calculations. Interestingly, we display the concept of aqueous lead-ion batteries based on this cell, demonstrating the potential of combining Pb2+ energy storage and removal. Overall, this work highlights the significance of developing high-performance technology for removing lead ions from wastewater.</div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"561 ","pages":"Article 116657"},"PeriodicalIF":9.9,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"1897412","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}

引用次数: 1

Heat and mass transfer analysis and optimization of passive interfacial solar still 被动式界面太阳能蒸馏器传热传质分析与优化

IF 9.9 1区工程技术

Desalination Pub Date : 2023-09-01 DOI: 10.1016/j.desal.2023.116681

Lu Wang , Hongfei Zheng , Qian Chen , Rihui Jin , Kim Choon Ng

{"title":"Heat and mass transfer analysis and optimization of passive interfacial solar still","authors":"Lu Wang , Hongfei Zheng , Qian Chen , Rihui Jin , Kim Choon Ng","doi":"10.1016/j.desal.2023.116681","DOIUrl":"https://doi.org/10.1016/j.desal.2023.116681","url":null,"abstract":"<div>Due to the fast thermal response and high solar energy efficiency, the passive interfacial solar still has become a reliable scheme for distributed water supply. In this paper, the thermodynamic performance of the interfacial solar still under different structures and operating conditions is studied experimentally, which provides an optimization direction for strengthening the distillation process. Firstly, based on the different Ra numbers, the calculation correlations for diffusion and convective mass transfer in the air interlayer were established to accurately predict the thermodynamic model of the interfacial distillation process. Then, the temperature distribution of the condenser and the growth process of condensate droplets were analyzed with the constant evaporation temperature. Simultaneously, the influence of different condensing structures and external variables on the heat transfer performance was compared. The results show that the interfacial still could obtain maximum evaporation heat under the vertical operation condition. When the evaporation temperature is 70 °C, the temperature difference between the wick evaporator and condenser can be increased by 49.5 %, after coupling a finned condenser with the aspect ratio of 7.2. In addition, a narrower interlayer spacing and a larger evaporation temperature could bring a higher equivalent heat transfer rate and evaporation efficiency. In a sunny weather, the interfacial solar still coupled with an extended condenser can reach a 4.81 kg/m2/day water yield and a 0.486 daily gained output ratio under 1 cm interlayer spacing.</div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"561 ","pages":"Article 116681"},"PeriodicalIF":9.9,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"3339211","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}

引用次数: 1

Novel hexa-fluorinated intrinsically porous polyimide membranes for the desalination of high saline water by air-gap membrane distillation 用于高盐水气隙膜蒸馏脱盐的新型六氟本质多孔聚酰亚胺膜

IF 9.9 1区工程技术

Desalination Pub Date : 2023-08-30 DOI: 10.1016/j.desal.2023.116948

Toheeb O. Obidara , Mohammed Abdul Azeem , Dahiru Umar Lawal , Mashaer A. Alfaraj , Mahmoud A. Abdulhamid , Turki N. Baroud

{"title":"Novel hexa-fluorinated intrinsically porous polyimide membranes for the desalination of high saline water by air-gap membrane distillation","authors":"Toheeb O. Obidara , Mohammed Abdul Azeem , Dahiru Umar Lawal , Mashaer A. Alfaraj , Mahmoud A. Abdulhamid , Turki N. Baroud","doi":"10.1016/j.desal.2023.116948","DOIUrl":"10.1016/j.desal.2023.116948","url":null,"abstract":"<div>Hexa-fluorinated porous membranes were prepared from 4,4′-(hexafluoroisopropylidene) diphtalic anhydride (6FDA)- 2,3,5,6- tetramethyl-m-phenylenediamine (TMPD) (6FDA-TMPD), which prepared by a polycondensation reaction between the dianhydride 6FDA and the diamine TMPD at 200 °C, by nonsolvent induced phase inversion process for the desalination of highly saline water (70,000 mg L−1) via membrane distillation (MD) technology. Here, for the first time, we demonstrate the significance of the intrinsic porosity of 6FDA-TMPD polyimide membranes, that not only result in an excellent performance in MD without the addition of porogen chemicals but also outperform other membranes including commercially available membranes. The membrane characteristics were optimized by varying the coagulation bath, dope solution concentration, and thickness. Notably, the developed membranes possess high porosity which can be attributed to the high BET surface area (550 m2 g−1) of 6FDA-TMPD. Membranes developed from an ethanol-based coagulation bath resulted in spongy-like morphology and demonstrated excellent desalination performance with a high flux (∼ 18.20 kg m−2 h−1) and stable salt rejection (> 99.96 %). The reported fabrication approach can be used to delineate the key design parameters for the fabrication of highly efficient intrinsically porous polyimide-based membranes which may pave the way for the practical application of MD for the desalination of highly saline water.Graphical abstract.</div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"566 ","pages":"Article 116948"},"PeriodicalIF":9.9,"publicationDate":"2023-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42467308","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}

引用次数: 0

Laccase-triggered one-step fabrication of positively charged phenolic acid-amine networks for nanofiltration 漆酶触发的一步法制备带正电的酚酸-胺网络用于纳滤

IF 9.9 1区工程技术

Desalination Pub Date : 2023-08-30 DOI: 10.1016/j.desal.2023.116946

Ping Fu, Di Zhou, Wan-Long Li, Wan-Ting Lin, Xiao-Jun Huang, Zhi-Kang Xu, Ling-Shu Wan

{"title":"Laccase-triggered one-step fabrication of positively charged phenolic acid-amine networks for nanofiltration","authors":"Ping Fu, Di Zhou, Wan-Long Li, Wan-Ting Lin, Xiao-Jun Huang, Zhi-Kang Xu, Ling-Shu Wan","doi":"10.1016/j.desal.2023.116946","DOIUrl":"10.1016/j.desal.2023.116946","url":null,"abstract":"<div>Molecular deposition provides a flexible and versatile platform for preparing positively charged composite nanofiltration membranes. The widely studied building units for molecular deposition are polyphenols such as catechins and tannins, which usually cause the complexity of the ultimate selective layer due to their relatively high antioxidant activity and limited positive potential originated from the large number of hydroxyl groups. In this work, a laccase-triggered one-step process has been proposed to prepare composite nanofiltration membranes. Highly positively charged phenolic acid-amine networks, which are represented by ferulic acid (FA) and polyethyleneimine (PEI), are constructed as the dense selective layer with a thickness of about 49 nm. This process is conducted in aqueous solutions under mild conditions, driven by electrostatic adsorption, catalytic oxidation, and covalent crosslinking processes. The structure of the selective layer can be finely tuned by the molecular weights of PEI, the chemical composition, and the pH values of the solutions. The prepared composite nanofiltration membranes can effectively reject MgCl2 (94.5 %) and organic dyes such as alcian blue (AB) (>98.7 %) and methyl blue (MB) (>97.8 %). This work not only demonstrates a facile and versatile method for preparing positively charged composite nanofiltration membranes with great separation performance towards divalent cations, but also expands the membrane building blocks.</div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"566 ","pages":"Article 116946"},"PeriodicalIF":9.9,"publicationDate":"2023-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42218008","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}

引用次数: 0

Selective extraction of uranium from seawater on amidoximated MXene/metal-organic framework architecture under an electric field 电场作用下酰胺基MXene/金属有机骨架结构对海水中铀的选择性萃取

IF 9.9 1区工程技术

Desalination Pub Date : 2023-08-26 DOI: 10.1016/j.desal.2023.116940

Nan Li , Li Yang , Ruidian Su , Na Shi , Jiakun Wu , Jia Zhao , Liping Wen , Zhining Wang

{"title":"Selective extraction of uranium from seawater on amidoximated MXene/metal-organic framework architecture under an electric field","authors":"Nan Li , Li Yang , Ruidian Su , Na Shi , Jiakun Wu , Jia Zhao , Liping Wen , Zhining Wang","doi":"10.1016/j.desal.2023.116940","DOIUrl":"10.1016/j.desal.2023.116940","url":null,"abstract":"<div>Seawater holds tremendous uranium resources, which can sustain the global nuclear industry for thousands of years. However, the existing technologies for uranium extraction from seawater (UES) are constrained by the ultra-low uranium concentration and high interference background. A three-dimensional amidoximated Ti3C2Tx/ZIF-67 architecture (TAZ) is fabricated for highly efficient uranium capture via electrosorption. Besides the excellent electrical conductivity of Ti3C2Tx, the introduction of amidoxime groups and ZIF-67 nanoparticles endows TAZ with porous structure and abundant active sites, which favors the rapid uranyl ions diffusion and enhanced electrosorption. TAZ displays a remarkable uranium extraction uptake of 2224.54 mg/g under an applied voltage of 1 V. Meanwhile, TAZ possesses prominent uranium selectivity resulting from amidoxime groups and imidazole N. TAZ also maintains a good reusability of 63.51% after 10 cycles. Furthermore, the bactericidal rates of TAZ against both Escherichia coli and Staphylococcus aureus achieve nearly 100%. The excellent properties have made TAZ apt for UES with a high uranium uptake of 11.40 mg/g in 24 h under an electric field, which is 5.3 times higher than the physicochemical adsorption. Our work provided a strategy to design high-performance nanomaterials for efficient uranium mining from seawater.</div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"566 ","pages":"Article 116940"},"PeriodicalIF":9.9,"publicationDate":"2023-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44759412","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}

引用次数: 0

Optimal design for floating solar still by structural modification: A review 浮式太阳能蒸馏器结构改造优化设计综述

IF 9.9 1区工程技术

Desalination Pub Date : 2023-08-26 DOI: 10.1016/j.desal.2023.116937

Zerong Sun , Lanfei Zhang , Ling Liu , Wenlong Chen , Guo Xie , Jiali Zha , Xinyu Wei

{"title":"Optimal design for floating solar still by structural modification: A review","authors":"Zerong Sun , Lanfei Zhang , Ling Liu , Wenlong Chen , Guo Xie , Jiali Zha , Xinyu Wei","doi":"10.1016/j.desal.2023.116937","DOIUrl":"10.1016/j.desal.2023.116937","url":null,"abstract":"<div>Floating solar distillation is a newly emerging and sustainable technology for producing clean water. However, recent outdoor tests of the floating solar still produced lower freshwater yield than expected, suggesting the needs for structural improvement. This review focuses on the latest structural modifications of the floating solar still as well as their impact on water production. Firstly, recent improvements on evaporation and water pathway structure to enhance the interfacial evaporation include the effective salt discharge and water transportation. Secondly, the multi-effect design has showed advantages in heat recovery of floating solar still and increasing yielding performance, albeit at a higher cost due to the increased complexity. Thirdly, shape of condensation cover influences vapor condensation and freshwater collection, with centrally symmetrical shapes and super-hydrophobic condensation surfaces being recommended. Fourthly, the stability of a floating solar still is vital for smooth yielding process, yet is under-explored due to the complex dynamics in marine environment. Lastly, floating solar stills with different structures were discussed regarding potential improvements and optimization strategies. This review study aims to offer valuable insights into the development of floating solar still with the optimal structures, promoting their practical applications and encouraging further exploitation of other potential uses.</div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"566 ","pages":"Article 116937"},"PeriodicalIF":9.9,"publicationDate":"2023-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44694484","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}

引用次数: 0

Flash evaporation method for improved desalination and cooling applications: An experimental study 用于改进脱盐和冷却应用的闪蒸法：实验研究

IF 9.9 1区工程技术

Desalination Pub Date : 2023-08-25 DOI: 10.1016/j.desal.2023.116933

Sarvjeet Singh, Prodyut R. Chakraborty, Hardik B. Kothadia

{"title":"Flash evaporation method for improved desalination and cooling applications: An experimental study","authors":"Sarvjeet Singh, Prodyut R. Chakraborty, Hardik B. Kothadia","doi":"10.1016/j.desal.2023.116933","DOIUrl":"10.1016/j.desal.2023.116933","url":null,"abstract":"<div>The present study involves the experimental analysis of flash evaporation when sudden depressurization is created into a vertical cylindrical tube having a water volume range of 120 to 180 ml. During experiments, low water pool volumes are used to prevent the impact of gravity on the change of saturation temperature. The investigation is carried out by varying the initial water temperature and back pressure of the vacuum tank in the range of 65 to 80 <math><msup><mrow></mrow><mo>∘</mo></msup></math>C and 11.32 to 41.32 kPa, respectively. It is observed that the evaporation rate and cooling rate are both enhanced by increasing the initial pool temperature and decreased by increasing the back pressure. It is reported that the evaporation rate is improved by 29.7 % with an increase in initial water temperature of 5 <math><msup><mrow></mrow><mo>∘</mo></msup></math>C and decreases by 152 % with an increase in the back pressure of 10 kPa. It is also found that the cooling rate is improved by 21.6 % with an increase in initial water temperature of 5 <math><msup><mrow></mrow><mo>∘</mo></msup></math>C and decreased by 59.2 % with an increase of water volume of 30 ml. It is clear from the visualization procedure that the degree of superheat plays a vital role in flash evaporation.</div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"566 ","pages":"Article 116933"},"PeriodicalIF":9.9,"publicationDate":"2023-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43482062","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}

引用次数: 1