Pub Date : 2023-07-09DOI: 10.1080/01496395.2023.2232104
S. Gaikwad, Abhishek A. Pathak, D. Mote, P. Gogate, Shivani Singh, Bharat Modhera
{"title":"Liquid-liquid equilibria of ternary mixtures containing Aniline + Toluene + water at elevated temperatures: measurements and correlation","authors":"S. Gaikwad, Abhishek A. Pathak, D. Mote, P. Gogate, Shivani Singh, Bharat Modhera","doi":"10.1080/01496395.2023.2232104","DOIUrl":"https://doi.org/10.1080/01496395.2023.2232104","url":null,"abstract":"","PeriodicalId":21680,"journal":{"name":"Separation Science and Technology","volume":"14 1","pages":""},"PeriodicalIF":2.8,"publicationDate":"2023-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87292835","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 : 2023-07-09DOI: 10.1080/01496395.2023.2232942
Yunlou Qian, Dan Zou, Renfan Chen, Xiaolong Huang, Zhen Wang
ABSTRACT This paper focuses on the promotion mechanism of sulfonated polyacrylamide (SPAM) on SBX flotation performance on fine pyrite, and verifies the positive effect for a gold ore with pyrite as the main Au-bearing mineral. Micro flotation showed that fine pyrite (−26 + 15 μm) floated poorly compared with coarser ones (−74 + 38 μm), and this cannot be completely filled through increasing the SBX dosage; however, by adding moderate SPAM into the pulp after SBX the flotation of fine pyrite was obviously improved. The real ore flotation revealed that SPAM decreased total reagent dosage and improvement on the concentrate indexes. SBX/SPAM system enabled faster settlement of fine pyrite compared with only SBX or SPAM system, indicating that larger particle size was obtained through hydrophobic and bridging flocculation. Zeta potential results showed that the pre-adsorbed SBX had little effect on the further adsorption of SPAM. Contact angle measurements suggested that the addition of moderate SPAM (50 μg/L) had almost no effect on pyrite surface hydrophobicity, illustrating that SPAM just bridged different fine particles adsorbed SBX rather that covered them. FTIR results showed that the amount of SPAM participating in bridging action was few.
{"title":"Improving xanthate flotation of fine pyrite using SPAM and the mechanism","authors":"Yunlou Qian, Dan Zou, Renfan Chen, Xiaolong Huang, Zhen Wang","doi":"10.1080/01496395.2023.2232942","DOIUrl":"https://doi.org/10.1080/01496395.2023.2232942","url":null,"abstract":"ABSTRACT This paper focuses on the promotion mechanism of sulfonated polyacrylamide (SPAM) on SBX flotation performance on fine pyrite, and verifies the positive effect for a gold ore with pyrite as the main Au-bearing mineral. Micro flotation showed that fine pyrite (−26 + 15 μm) floated poorly compared with coarser ones (−74 + 38 μm), and this cannot be completely filled through increasing the SBX dosage; however, by adding moderate SPAM into the pulp after SBX the flotation of fine pyrite was obviously improved. The real ore flotation revealed that SPAM decreased total reagent dosage and improvement on the concentrate indexes. SBX/SPAM system enabled faster settlement of fine pyrite compared with only SBX or SPAM system, indicating that larger particle size was obtained through hydrophobic and bridging flocculation. Zeta potential results showed that the pre-adsorbed SBX had little effect on the further adsorption of SPAM. Contact angle measurements suggested that the addition of moderate SPAM (50 μg/L) had almost no effect on pyrite surface hydrophobicity, illustrating that SPAM just bridged different fine particles adsorbed SBX rather that covered them. FTIR results showed that the amount of SPAM participating in bridging action was few.","PeriodicalId":21680,"journal":{"name":"Separation Science and Technology","volume":"2 1","pages":"2208 - 2216"},"PeriodicalIF":2.8,"publicationDate":"2023-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86458189","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 : 2023-07-05DOI: 10.1080/01496395.2023.2232105
N. Ajith, A. Dalvi, P. S. Remya Devi, K. K. Swain
{"title":"Sorption of ruthenium on aniline-siloxane composites","authors":"N. Ajith, A. Dalvi, P. S. Remya Devi, K. K. Swain","doi":"10.1080/01496395.2023.2232105","DOIUrl":"https://doi.org/10.1080/01496395.2023.2232105","url":null,"abstract":"","PeriodicalId":21680,"journal":{"name":"Separation Science and Technology","volume":"1 1","pages":""},"PeriodicalIF":2.8,"publicationDate":"2023-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72745085","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 : 2023-07-04DOI: 10.1080/01496395.2023.2232102
Garima Pandey, M. Darekar, K.K. Singh, S. Mukhopadhyay
{"title":"Selective extraction of zirconium from zirconium nitrate solution in a pulsed stirred column","authors":"Garima Pandey, M. Darekar, K.K. Singh, S. Mukhopadhyay","doi":"10.1080/01496395.2023.2232102","DOIUrl":"https://doi.org/10.1080/01496395.2023.2232102","url":null,"abstract":"","PeriodicalId":21680,"journal":{"name":"Separation Science and Technology","volume":"1 1","pages":""},"PeriodicalIF":2.8,"publicationDate":"2023-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73550973","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 : 2023-07-03DOI: 10.1080/01496395.2023.2232533
Atti V V Srinivas, Ajish Jivanlal Shaha, S. Jakka
{"title":"Studies on application of Petcoke-based graphene membranes for CO2 separation","authors":"Atti V V Srinivas, Ajish Jivanlal Shaha, S. Jakka","doi":"10.1080/01496395.2023.2232533","DOIUrl":"https://doi.org/10.1080/01496395.2023.2232533","url":null,"abstract":"","PeriodicalId":21680,"journal":{"name":"Separation Science and Technology","volume":"21 1","pages":""},"PeriodicalIF":2.8,"publicationDate":"2023-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87160215","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 : 2023-07-03DOI: 10.1080/01496395.2023.2225734
S. Karunanithi, A. Kapoor, P. Senthil kumar, S. Balasubramanian, G. Rangasamy
ABSTRACT Acetic acid is one of the top commodity chemicals used in various industrial processes. The separation of acetic acid from aqueous solutions is a crucial requirement in the production units. Effective sequestration and recovery of acetic acid is economically beneficial and significant from value addition and environmental protection perspectives. Simple distillation procedures are not usually viable owing to the necessity of a high number of stages and large reflux ratios in the separation column. Several methods such as solvent extraction, extractive distillation, and membrane separation have been studied to retrieve acetic acid from aqueous systems. Of these methods, solvent extraction is preferred due to less consumption of energy and fast mass transfer rates. The efficiency of solvent extraction primarily depends on the solvent chosen for the extraction. The current work is focused on the review of studies that have been extensively carried out for extracting acetic acid from aqueous solutions using various pure solvents and a combination of solvents. The role of modeling and computer-aided simulation studies in the design and evaluation of separation performance is elucidated. Strategies to enhance acetic acid extraction such as salting-out and buffering-out are highlighted. Future prospects are identified to develop sustainable separation systems.
{"title":"Solvent extraction of acetic acid from aqueous solutions: A review","authors":"S. Karunanithi, A. Kapoor, P. Senthil kumar, S. Balasubramanian, G. Rangasamy","doi":"10.1080/01496395.2023.2225734","DOIUrl":"https://doi.org/10.1080/01496395.2023.2225734","url":null,"abstract":"ABSTRACT Acetic acid is one of the top commodity chemicals used in various industrial processes. The separation of acetic acid from aqueous solutions is a crucial requirement in the production units. Effective sequestration and recovery of acetic acid is economically beneficial and significant from value addition and environmental protection perspectives. Simple distillation procedures are not usually viable owing to the necessity of a high number of stages and large reflux ratios in the separation column. Several methods such as solvent extraction, extractive distillation, and membrane separation have been studied to retrieve acetic acid from aqueous systems. Of these methods, solvent extraction is preferred due to less consumption of energy and fast mass transfer rates. The efficiency of solvent extraction primarily depends on the solvent chosen for the extraction. The current work is focused on the review of studies that have been extensively carried out for extracting acetic acid from aqueous solutions using various pure solvents and a combination of solvents. The role of modeling and computer-aided simulation studies in the design and evaluation of separation performance is elucidated. Strategies to enhance acetic acid extraction such as salting-out and buffering-out are highlighted. Future prospects are identified to develop sustainable separation systems.","PeriodicalId":21680,"journal":{"name":"Separation Science and Technology","volume":"22 1","pages":"1985 - 2007"},"PeriodicalIF":2.8,"publicationDate":"2023-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81909611","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 : 2023-06-29DOI: 10.1080/01496395.2023.2223754
Mingjian Wang, Meiqing Zeng, P. Wang, Yaochi Liu
ABSTRACT The efficiency of Ni(II) removal from electroplating wastewater is highly correlated with different adsorption materials. A Ca-Si activated mineral adsorbent (CSAM) and two ion-exchange resins (732 and D152) were compared. The adsorption of Ni (II) by three materials is spontaneous and endothermic, and their adsorption capacities are similar (48.66–65.36 mg/g at 318K), but the dosage of CSAM is less (1.0 g/L for 50 mg/L Ni(II)), its adsorption is faster (<5 min) and pH range is wider (2–7). 10% NaCl, 1 mol/L HCl and 10% NaCl +1 mol/L HCl were used as desorbent agents, and CSAM exhibited an extremely low desorption rate (1.49–3.41%). The smaller separation factor (close to 0) and XPS analysis showed that the Ni(II) adsorption on CSAM was an irreversible chemical process, which was different from the three-stage adsorption of resins. The treatment of two kinds of electroplating wastewater with high and low concentration showed that CSAM not only had a higher Ni(II) removal rates (>98.4%), but also could efficiently remove Cu(II) (>98%), total-chromium (>79%) and COD (>66%). The treatment of Ni(II) containing electroplating wastewater with ion-exchange resins is greatly affected by the complexing agent. CSAM is more suitable for the treatment of electroplating wastewater containing various metals and organic matters.
{"title":"Comparative investigation on Ni(II) removal from electroplating wastewater by mineral adsorbent (CSAM) and ion-exchange resins","authors":"Mingjian Wang, Meiqing Zeng, P. Wang, Yaochi Liu","doi":"10.1080/01496395.2023.2223754","DOIUrl":"https://doi.org/10.1080/01496395.2023.2223754","url":null,"abstract":"ABSTRACT The efficiency of Ni(II) removal from electroplating wastewater is highly correlated with different adsorption materials. A Ca-Si activated mineral adsorbent (CSAM) and two ion-exchange resins (732 and D152) were compared. The adsorption of Ni (II) by three materials is spontaneous and endothermic, and their adsorption capacities are similar (48.66–65.36 mg/g at 318K), but the dosage of CSAM is less (1.0 g/L for 50 mg/L Ni(II)), its adsorption is faster (<5 min) and pH range is wider (2–7). 10% NaCl, 1 mol/L HCl and 10% NaCl +1 mol/L HCl were used as desorbent agents, and CSAM exhibited an extremely low desorption rate (1.49–3.41%). The smaller separation factor (close to 0) and XPS analysis showed that the Ni(II) adsorption on CSAM was an irreversible chemical process, which was different from the three-stage adsorption of resins. The treatment of two kinds of electroplating wastewater with high and low concentration showed that CSAM not only had a higher Ni(II) removal rates (>98.4%), but also could efficiently remove Cu(II) (>98%), total-chromium (>79%) and COD (>66%). The treatment of Ni(II) containing electroplating wastewater with ion-exchange resins is greatly affected by the complexing agent. CSAM is more suitable for the treatment of electroplating wastewater containing various metals and organic matters.","PeriodicalId":21680,"journal":{"name":"Separation Science and Technology","volume":"39 1","pages":"1959 - 1971"},"PeriodicalIF":2.8,"publicationDate":"2023-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80576180","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 : 2023-06-27DOI: 10.1080/01496395.2023.2225732
Jagadeesh Kodali, S. Puram, P. Srinivas, M. C. Nilavu, B. Arunraj, A. S. Krishna Kumar, R. Nagarathnam
{"title":"Sequestration of Mecoprop herbicide from water using XAD-4 resin impregnated with Aliquat 336 and quantification with Liquid Chromatography-Tandem mass spectrometer (LC-MS/MS)","authors":"Jagadeesh Kodali, S. Puram, P. Srinivas, M. C. Nilavu, B. Arunraj, A. S. Krishna Kumar, R. Nagarathnam","doi":"10.1080/01496395.2023.2225732","DOIUrl":"https://doi.org/10.1080/01496395.2023.2225732","url":null,"abstract":"","PeriodicalId":21680,"journal":{"name":"Separation Science and Technology","volume":"26 1","pages":""},"PeriodicalIF":2.8,"publicationDate":"2023-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73873256","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 : 2023-06-27DOI: 10.1080/01496395.2023.2227758
R. Karan, T. Sreenivas, D. Singh
{"title":"Studies on hydrometallurgical recovery of rare earth elements as mixed fluoride compound from coal fly ash using environmentally friendly organic acid","authors":"R. Karan, T. Sreenivas, D. Singh","doi":"10.1080/01496395.2023.2227758","DOIUrl":"https://doi.org/10.1080/01496395.2023.2227758","url":null,"abstract":"","PeriodicalId":21680,"journal":{"name":"Separation Science and Technology","volume":"1 1","pages":""},"PeriodicalIF":2.8,"publicationDate":"2023-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89559774","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 : 2023-06-27DOI: 10.1080/01496395.2023.2227340
S. L. Mirmohammadi, J. Safdari, M. Mallah, F. Ezazi, Contact S. L. Mirmohammadi
ABSTRACT Due to the higher flexibility of square cascades than tapered cascades, this research focuses on the design and optimization of square cascades to provide the enriched uranium used in the fresh fuel of a power reactor with different enrichment levels. In order to design and optimize square cascades, two computational codes based on the particle swarm optimization algorithm and the grasshopper optimization algorithm have been developed for the design and optimization of square cascades. The results show that by using optimal square cascades, it is possible to directly produce the fresh enriched uranium required for a power reactor at different enrichment levels (4.1%, 3.7%, and 3.3%), and there is no need to dilute the products enriched by natural or depleted uranium, and the mixing unit can be removed from enrichment facilities. Also, the results obtained from both algorithms show that the total number of optimized square cascades and gas centrifuges required for the production of the annual fuel for a power reactor are very close to each other and have a difference of about 0.65–1.24%.
{"title":"The design and optimization of square cascades by PSOA and GOA to provide fresh fuel for a nuclear power reactor","authors":"S. L. Mirmohammadi, J. Safdari, M. Mallah, F. Ezazi, Contact S. L. Mirmohammadi","doi":"10.1080/01496395.2023.2227340","DOIUrl":"https://doi.org/10.1080/01496395.2023.2227340","url":null,"abstract":"ABSTRACT Due to the higher flexibility of square cascades than tapered cascades, this research focuses on the design and optimization of square cascades to provide the enriched uranium used in the fresh fuel of a power reactor with different enrichment levels. In order to design and optimize square cascades, two computational codes based on the particle swarm optimization algorithm and the grasshopper optimization algorithm have been developed for the design and optimization of square cascades. The results show that by using optimal square cascades, it is possible to directly produce the fresh enriched uranium required for a power reactor at different enrichment levels (4.1%, 3.7%, and 3.3%), and there is no need to dilute the products enriched by natural or depleted uranium, and the mixing unit can be removed from enrichment facilities. Also, the results obtained from both algorithms show that the total number of optimized square cascades and gas centrifuges required for the production of the annual fuel for a power reactor are very close to each other and have a difference of about 0.65–1.24%.","PeriodicalId":21680,"journal":{"name":"Separation Science and Technology","volume":"12 1","pages":"2008 - 2026"},"PeriodicalIF":2.8,"publicationDate":"2023-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78822327","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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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