Pub Date : 2025-01-04DOI: 10.1016/j.jtice.2024.105937
Jiangtao Yu , Manman Zhang , Nan Wang , Maolin Zhai , Rong Hua , Juntao Yan , Xiaofang Li , Xueyan Que , Long Zhao
Background
Efficient separation of Re from molybdenum and uranium ores holds significant implications for resource utilization and environmental conservation.
Methods
A novel quaternary phosphonium (PPh3) modified cellulose (CMS-g-VBPPh3NO3) was synthesized through the halogenation reaction between PPh3 and the VBC grafted cellulose intermediate (CMS-g-VBC). The recovery of Re was evaluated by batch and dynamic adsorption experiments.
Significant Findings
The adsorption performance of CMS-g-VBPPh3NO3 for Re(VII) remains stable across a broad pH range. Even in the presence of various coexisting anions (NO3-, SO42- and PO43-), CMS-g-VBPPh3NO3 demonstrates exceptional adsorption efficiency towards Re(VII). In column experiments, the CMS-g-VBPPh3NO3 selectively captured Re(VII) from both acidic and alkaline uranium ore leachate, with concentration factors reaching 600 and 1228, respectively. These results highlight the material's effective Re(VII) separation capabilities, indicating its potential as a promising candidate for practical applications involving Re(VII) recovery.
{"title":"Highly efficient recovery of Re(VII) from uranium and molybdenum ores leaching solution by quaternary phosphonium modified cellulose microspheres","authors":"Jiangtao Yu , Manman Zhang , Nan Wang , Maolin Zhai , Rong Hua , Juntao Yan , Xiaofang Li , Xueyan Que , Long Zhao","doi":"10.1016/j.jtice.2024.105937","DOIUrl":"10.1016/j.jtice.2024.105937","url":null,"abstract":"<div><h3>Background</h3><div>Efficient separation of Re from molybdenum and uranium ores holds significant implications for resource utilization and environmental conservation.</div></div><div><h3>Methods</h3><div>A novel quaternary phosphonium (PPh<sub>3</sub>) modified cellulose (CMS-g-VBPPh<sub>3</sub>NO<sub>3</sub>) was synthesized through the halogenation reaction between PPh<sub>3</sub> and the VBC grafted cellulose intermediate (CMS-g-VBC). The recovery of Re was evaluated by batch and dynamic adsorption experiments.</div></div><div><h3>Significant Findings</h3><div>The adsorption performance of CMS-g-VBPPh<sub>3</sub>NO<sub>3</sub> for Re(VII) remains stable across a broad pH range. Even in the presence of various coexisting anions (NO<sub>3</sub><sup>-</sup>, SO<sub>4</sub><sup>2-</sup> and PO<sub>4</sub><sup>3-</sup>), CMS-g-VBPPh<sub>3</sub>NO<sub>3</sub> demonstrates exceptional adsorption efficiency towards Re(VII). In column experiments, the CMS-g-VBPPh<sub>3</sub>NO<sub>3</sub> selectively captured Re(VII) from both acidic and alkaline uranium ore leachate, with concentration factors reaching 600 and 1228, respectively. These results highlight the material's effective Re(VII) separation capabilities, indicating its potential as a promising candidate for practical applications involving Re(VII) recovery.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"168 ","pages":"Article 105937"},"PeriodicalIF":5.5,"publicationDate":"2025-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143161182","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
One-step synthesis of diphenylcarbonate (DPC) via the oxidative carbonylation of phenol can significantly improve the sustainability of polycarbonate manufacturing and aid economic potential for CO2 utilization when coupled with the reverse water gas shift reaction. This work aims to develop active Pd-based solid catalyst by incorporating five transition metal oxide promoters individually. The impact of the transition metal oxides to the performance and stability for DPC synthesis were systematically studied.
Method
The oxidative carbonylation of phenol to synthesize diphenyl carbonate (DPC) is conducted in a high-pressure batch reactor using supported palladium catalysts. The promoted catalysts were prepared by co-precipitating Pd and the transition metal hydroxide onto the Pb-OMS-2 catalyst support followed by thermal treatment in air. Detailed materials characterization including diffraction, spectroscopic, chemisorption, and elemental analysis was implemented to aid the understanding of structure-property relations.
Significant findings
The yield of DPC exhibited a sigmoidal growth over time due to the accumulation of leached metal ions which served as promoting co-catalysts expediting the oxidative carbonylation reaction. The stability of Pd catalyst against leaching was enhanced by the incorporated transition metals with iron and nickel being most effective in the long run.
{"title":"Transition metal promoted palladium-catalyzed oxidative carbonylation of phenol to diphenyl carbonate","authors":"Dun-Zheng Liao , Yen-Te Lee , Lu-Yu Chueh , Yi-Ta Tsai , Chien-Fu Huang , De-Hao Tsai , Yung-Tin (Frank) Pan","doi":"10.1016/j.jtice.2024.105942","DOIUrl":"10.1016/j.jtice.2024.105942","url":null,"abstract":"<div><h3>Background</h3><div>One-step synthesis of diphenylcarbonate (DPC) via the oxidative carbonylation of phenol can significantly improve the sustainability of polycarbonate manufacturing and aid economic potential for CO<sub>2</sub> utilization when coupled with the reverse water gas shift reaction. This work aims to develop active Pd-based solid catalyst by incorporating five transition metal oxide promoters individually. The impact of the transition metal oxides to the performance and stability for DPC synthesis were systematically studied.</div></div><div><h3>Method</h3><div>The oxidative carbonylation of phenol to synthesize diphenyl carbonate (DPC) is conducted in a high-pressure batch reactor using supported palladium catalysts. The promoted catalysts were prepared by co-precipitating Pd and the transition metal hydroxide onto the Pb-OMS-2 catalyst support followed by thermal treatment in air. Detailed materials characterization including diffraction, spectroscopic, chemisorption, and elemental analysis was implemented to aid the understanding of structure-property relations.</div></div><div><h3>Significant findings</h3><div>The yield of DPC exhibited a sigmoidal growth over time due to the accumulation of leached metal ions which served as promoting co-catalysts expediting the oxidative carbonylation reaction. The stability of Pd catalyst against leaching was enhanced by the incorporated transition metals with iron and nickel being most effective in the long run.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"168 ","pages":"Article 105942"},"PeriodicalIF":5.5,"publicationDate":"2025-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143159897","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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 : 2025-01-03DOI: 10.1016/j.jtice.2024.105947
Antoine Venault, Bo-Cheng Wu, Yung Chang
Background
The maleic anhydride groups of styrene maleic anhydride (SMA) can serve as precursors for subsequent surface modification of polymeric films aimed at generating zwitterionic interfaces for biofouling mitigation. For effective zwitterionization reaction and antifouling properties of the film, the zwitterionic derivative must also possess amino-end or hydroxyl‑end groups.
Methods
We synthesized a derivative of sulfobetaine methacrylate containing amino-end groups, 4-((3-aminopropyl)dimethylammonio)butane-1-sulfonate, from the reaction between a diamine, 3-(dimethylamino)-1-propylamine, and 1,4-butane sultone. Meanwhile, poly(vinylidene fluoride) (PVDF) films containing SMA, were prepared by phase inversion of the PVDF/SMA/solvent blend. The obtained films were then grafted with the zwitterionic material by ring-opening reaction of the maleic anhydride groups.
Significant Findings
After ring-opening reaction between the SMA copolymer molecules embedded in the PVDF matrix and the amino-end group zwitterionic reactants, the hydration of the membranes was significantly improved with a water contact angle falling to 0° in dynamic tests while it remained constant to about 143° for the virgin membrane. This important hydration enhancement resulted in outstanding bacterial resistance in static conditions against Escherichia coli (E. coli), Stenotrophomonas maltophilia, Staphylococcus aureus and Streptococcus mutans (97 % to 99 % reduction, relative to the unmodified sample). Resistance to E. coli after 3 weeks of immersion remained as high as 98 %, suggesting stability of the modification ensured by the hydrophobic interactions between PVDF and styrene groups of SMA. During flow, irreversible biofouling by E. coli was reduced from over 87 % (in unmodified films) to 55 %, the reversible fouling decline ratio increased from <8 % to about 35 % suggesting weakened interactions between bacteria and the films after the modification. Finally, the water permeability recovery of the porous film increased significantly from 12.6 % to 45.0 %.
{"title":"Ring-opening reaction of maleic anhydride with an amino-end derivative of sulfobetaine methacrylate for effective, versatile and stable fabrication of bacteria and blood-resistant porous polymeric films","authors":"Antoine Venault, Bo-Cheng Wu, Yung Chang","doi":"10.1016/j.jtice.2024.105947","DOIUrl":"10.1016/j.jtice.2024.105947","url":null,"abstract":"<div><h3>Background</h3><div>The maleic anhydride groups of styrene maleic anhydride (SMA) can serve as precursors for subsequent surface modification of polymeric films aimed at generating zwitterionic interfaces for biofouling mitigation. For effective zwitterionization reaction and antifouling properties of the film, the zwitterionic derivative must also possess amino-end or hydroxyl‑end groups.</div></div><div><h3>Methods</h3><div>We synthesized a derivative of sulfobetaine methacrylate containing amino-end groups, 4-((3-aminopropyl)dimethylammonio)butane-1-sulfonate, from the reaction between a diamine, 3-(dimethylamino)-1-propylamine, and 1,4-butane sultone. Meanwhile, poly(vinylidene fluoride) (PVDF) films containing SMA, were prepared by phase inversion of the PVDF/SMA/solvent blend. The obtained films were then grafted with the zwitterionic material by ring-opening reaction of the maleic anhydride groups.</div></div><div><h3>Significant Findings</h3><div>After ring-opening reaction between the SMA copolymer molecules embedded in the PVDF matrix and the amino-end group zwitterionic reactants, the hydration of the membranes was significantly improved with a water contact angle falling to 0° in dynamic tests while it remained constant to about 143° for the virgin membrane. This important hydration enhancement resulted in outstanding bacterial resistance in static conditions against <em>Escherichia coli</em> (<em>E. coli</em>), <em>Stenotrophomonas maltophilia, Staphylococcus aureus</em> and <em>Streptococcus mutans</em> (97 % to 99 % reduction, relative to the unmodified sample). Resistance to <em>E. coli</em> after 3 weeks of immersion remained as high as 98 %, suggesting stability of the modification ensured by the hydrophobic interactions between PVDF and styrene groups of SMA. During flow, irreversible biofouling by <em>E. coli</em> was reduced from over 87 % (in unmodified films) to 55 %, the reversible fouling decline ratio increased from <8 % to about 35 % suggesting weakened interactions between bacteria and the films after the modification. Finally, the water permeability recovery of the porous film increased significantly from 12.6 % to 45.0 %.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"168 ","pages":"Article 105947"},"PeriodicalIF":5.5,"publicationDate":"2025-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143159896","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Background Antioxidant and anti-inflammatory effects are increasingly recognized for their pivotal roles in addressing human health challenges. Glutathione (GSH) and quercetin (QC) are natural antioxidants known to protect the immune system, mitigate oxidative stress, and aid in repairing in vivo inflammation. However, their practical application has been limited due to poor stability and susceptibility to oxidation. This study aims to evaluate the feasibility of nanoemulsions (NEs) formulated with saponin, dihexadecyl phosphate, and dioctadecyl dimethylammonium bromide for the encapsulation of GSH or QC, focusing on their physicochemical properties, chemical stability, antioxidant activity, in vitro biocompatibility, and in vivo anti-inflammatory efficacy.
Methods The performance of NEs encapsulating GSH or QC was assessed using dynamic light scattering (DLS), chemical stability tests, encapsulation efficiency measurements, transmission electron microscopy (TEM), cytotoxicity and cell morphology assays, DPPH radical scavenging assays, and a murine skin inflammation assay model.
Findings Incorporating GSH or QC into NEs resulted in an increase in droplet size while maintaining an encapsulation efficiency of approximately 75 %. Encapsulation significantly enhanced the chemical stability and antioxidant capacity of GSH or QC. These NEs demonstrated over 95 % cell viability in HaCaT and HFDPC cells without causing noticeable changes in cell morphology. Furthermore, GSH- or QC-loaded NEs effectively reduced skin erythema, scaling, and epidermal thickening with no significant impact on the drug efficacy.
{"title":"Enhanced stability, antioxidant capacity and in vivo anti-inflammatory efficacy of glutathione and quercetin via nanoemulsion formulation","authors":"I-Ting Hsieh , Chen-Chieh Liao , Jih-Heng Chen , Chao-Chun Yang , Tzung-Han Chou , Dillirani Nagarajan , Duu-Jong Lee , Jo-Shu Chang","doi":"10.1016/j.jtice.2024.105943","DOIUrl":"10.1016/j.jtice.2024.105943","url":null,"abstract":"<div><div>Background Antioxidant and anti-inflammatory effects are increasingly recognized for their pivotal roles in addressing human health challenges. Glutathione (GSH) and quercetin (QC) are natural antioxidants known to protect the immune system, mitigate oxidative stress, and aid in repairing <em>in vivo</em> inflammation. However, their practical application has been limited due to poor stability and susceptibility to oxidation. This study aims to evaluate the feasibility of nanoemulsions (NEs) formulated with saponin, dihexadecyl phosphate, and dioctadecyl dimethylammonium bromide for the encapsulation of GSH or QC, focusing on their physicochemical properties, chemical stability, antioxidant activity, <em>in vitro</em> biocompatibility, and <em>in vivo</em> anti-inflammatory efficacy.</div><div>Methods The performance of NEs encapsulating GSH or QC was assessed using dynamic light scattering (DLS), chemical stability tests, encapsulation efficiency measurements, transmission electron microscopy (TEM), cytotoxicity and cell morphology assays, DPPH radical scavenging assays, and a murine skin inflammation assay model.</div><div>Findings Incorporating GSH or QC into NEs resulted in an increase in droplet size while maintaining an encapsulation efficiency of approximately 75 %. Encapsulation significantly enhanced the chemical stability and antioxidant capacity of GSH or QC. These NEs demonstrated over 95 % cell viability in HaCaT and HFDPC cells without causing noticeable changes in cell morphology. Furthermore, GSH- or QC-loaded NEs effectively reduced skin erythema, scaling, and epidermal thickening with no significant impact on the drug efficacy.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"168 ","pages":"Article 105943"},"PeriodicalIF":5.5,"publicationDate":"2025-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143159909","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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 : 2025-01-03DOI: 10.1016/j.jtice.2024.105944
Chi Hieu Nguyen , Thi Tuong Van Tran , Zhi-Hao Wu , Ruey-Shin Juang
Background
1,3-Propanediol (1,3-PD) is an important intermediate that is widely used in multiple industries, such as cosmetics, polymers, pharmaceuticals, engine coolants, and heat-transfer fluids. Fermentation is the preferred process for producing 1,3-PD for reasons such as environmental protection and energy saving. Although Klebsiella pneumoniae (K. pneumoniae) appears to be a potential microorganism because of its relatively high productivity, the fermentation of 1,3-PD still has some disadvantages, such as a relatively low yield due to product inhibition compared to chemical synthesis. Therefore, the enhancement of the productivity or yield of 1,3-PD plays a crucial role in the fermentation processes.
Methods
In this study, 1,3-PD was produced from glycerol using fermentation broth of K. pneumoniae. Three strategies, including the use of the fed-batch mode, in situ filtration-extraction in hollow-fiber membrane contactors (membrane extraction), and medium dilution, were systematically evaluated and compared.
Significant Findings
First, K. pneumoniae was grown in a 5-L fermenter for 12 h, and the productivity (over 12 h) and yield of 1,3-PD production from 40 g/L of glycerol were 1.43 g/(L h) and 0.5, respectively. After the feeding at 9 h, the productivity of 1,3-PD (over 58 h) gradually reached 1.13 g/(L h) at a feeding rate of 24.0 mL/h. After 9 h of in-situ filtration-membrane extraction, the growth of K. pneumoniae was inhibited by the solvent n-hexanol, leading to a lower production and yield. The growth of K. pneumoniae was found to be evidently inhibited in suspension tests when n-hexanol concentration reached 1000 mg/L. In-situ dilution of the culture medium can reduce product inhibition and enhance productivity. For example, at a dilution ratio of 0.75, the amount and yield of the 1,3-PD product were 207.8 g and 0.6 mol/mol, respectively. Finally, using the hybrid process of fermentation and filtration-membrane extraction, a stable 1,3-PD yield with high purity was obtained.
{"title":"Comparison of strategies for enhanced production of 1,3-propanediol from fermentation broths of Klebsiella pneumoniae","authors":"Chi Hieu Nguyen , Thi Tuong Van Tran , Zhi-Hao Wu , Ruey-Shin Juang","doi":"10.1016/j.jtice.2024.105944","DOIUrl":"10.1016/j.jtice.2024.105944","url":null,"abstract":"<div><h3>Background</h3><div>1,3-Propanediol (1,3-PD) is an important intermediate that is widely used in multiple industries, such as cosmetics, polymers, pharmaceuticals, engine coolants, and heat-transfer fluids. Fermentation is the preferred process for producing 1,3-PD for reasons such as environmental protection and energy saving. Although <em>Klebsiella pneumoniae</em> (K<em>. pneumoniae</em>) appears to be a potential microorganism because of its relatively high productivity, the fermentation of 1,3-PD still has some disadvantages, such as a relatively low yield due to product inhibition compared to chemical synthesis. Therefore, the enhancement of the productivity or yield of 1,3-PD plays a crucial role in the fermentation processes.</div></div><div><h3>Methods</h3><div>In this study, 1,3-PD was produced from glycerol using fermentation broth of K<em>. pneumoniae</em>. Three strategies, including the use of the fed-batch mode, <em>in situ</em> filtration-extraction in hollow-fiber membrane contactors (membrane extraction), and medium dilution, were systematically evaluated and compared.</div></div><div><h3>Significant Findings</h3><div>First, K<em>. pneumoniae</em> was grown in a 5-L fermenter for 12 h, and the productivity (over 12 h) and yield of 1,3-PD production from 40 g/L of glycerol were 1.43 g/(L h) and 0.5, respectively. After the feeding at 9 h, the productivity of 1,3-PD (over 58 h) gradually reached 1.13 g/(L h) at a feeding rate of 24.0 mL/h. After 9 h of <em>in-situ</em> filtration-membrane extraction, the growth of K<em>. pneumoniae</em> was inhibited by the solvent <em>n</em>-hexanol, leading to a lower production and yield. The growth of K<em>. pneumoniae</em> was found to be evidently inhibited in suspension tests when <em>n</em>-hexanol concentration reached 1000 mg/L. <em>In-situ</em> dilution of the culture medium can reduce product inhibition and enhance productivity. For example, at a dilution ratio of 0.75, the amount and yield of the 1,3-PD product were 207.8 g and 0.6 mol/mol, respectively. Finally, using the hybrid process of fermentation and filtration-membrane extraction, a stable 1,3-PD yield with high purity was obtained.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"168 ","pages":"Article 105944"},"PeriodicalIF":5.5,"publicationDate":"2025-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143159912","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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 : 2025-01-03DOI: 10.1016/j.jtice.2024.105900
Ruiqi Xie , Xiong Tong , Xian Xie , Qiang Song , Shuaipeng Ren , Xun Wang , Zhihui Zhao , Yang Liu
Background
The clay-type lithium resource founded in central region of Yunnan province will become a crucial lithium resource in the future because of its large reserves and superior geographical location. The technological mineralogical characteristics are extremely important for clay-type lithium resource separation and extraction. Therefore, in this paper, the chemical composition, mineral composition, mineralogical characteristics, distribution size and symbiotic relationship of main minerals of clay-type lithium ore in the central region of Yunnan Province were analyzed.
Methods
The X-ray fluorescence spectrum (XPS), X-ray diffraction analysis (XRD), chemical multi-element analysis, thermal analysis, acid dissolution test, microscope, and mineral liberation analyser (MLA) were used. In addition, for the first time, the enriched ore samples were manually selected under the microscope. The occurrence state of lithium was investigated by chemical multi-element analysis and XRD quantitative analysis.
Significant findings
The results revealed that the ore was composed of 16 kinds of minerals and lithium exists mainly in the form of cookeite. Due to the distribution size and symbiotic relationship, extremely fine grinding particle size is required for cookeite separation. Meanwhile, the main gangues are diaspore, boehmite and kaolinite. Therefore, exploring the effects of them on the lithium extraction is important for the development of selective roasting additives and leaching reagents.
{"title":"Study on process mineralogy of clay-type lithium ore in central region of Yunnan province","authors":"Ruiqi Xie , Xiong Tong , Xian Xie , Qiang Song , Shuaipeng Ren , Xun Wang , Zhihui Zhao , Yang Liu","doi":"10.1016/j.jtice.2024.105900","DOIUrl":"10.1016/j.jtice.2024.105900","url":null,"abstract":"<div><h3>Background</h3><div>The clay-type lithium resource founded in central region of Yunnan province will become a crucial lithium resource in the future because of its large reserves and superior geographical location. The technological mineralogical characteristics are extremely important for clay-type lithium resource separation and extraction. Therefore, in this paper, the chemical composition, mineral composition, mineralogical characteristics, distribution size and symbiotic relationship of main minerals of clay-type lithium ore in the central region of Yunnan Province were analyzed.</div></div><div><h3>Methods</h3><div>The X-ray fluorescence spectrum (XPS), X-ray diffraction analysis (XRD), chemical multi-element analysis, thermal analysis, acid dissolution test, microscope, and mineral liberation analyser (MLA) were used. In addition, for the first time, the enriched ore samples were manually selected under the microscope. The occurrence state of lithium was investigated by chemical multi-element analysis and XRD quantitative analysis.</div></div><div><h3>Significant findings</h3><div>The results revealed that the ore was composed of 16 kinds of minerals and lithium exists mainly in the form of cookeite. Due to the distribution size and symbiotic relationship, extremely fine grinding particle size is required for cookeite separation. Meanwhile, the main gangues are diaspore, boehmite and kaolinite. Therefore, exploring the effects of them on the lithium extraction is important for the development of selective roasting additives and leaching reagents.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"168 ","pages":"Article 105900"},"PeriodicalIF":5.5,"publicationDate":"2025-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143159555","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The present study employs the Juglans Regia, a natural adsorbent, to investigate its efficiency in methylene blue (MB) removal from aqueous solutions. Advanced techniques like Artificial Neural Networks (ANN) and Response Surface Methodologies (RSM) are applied to model and predict the adsorptive behaviour of MB using Juglans Regia adsorbent. Different characterization techniques are utilised to understand the morphology and structure of the catalyst to provide insights into its potential adsorption capabilities.
Methods
The study uses ANN and RSM for predictive modelling, enabling a comprehensive comparison of their effectiveness in describing MB adsorption onto Juglans Regia. Kinetic analysis employing pseudo-2nd order kinetics and isotherm studies based on the Langmuir isotherm model are conducted to understand the kinetics and equilibrium behaviour of the adsorption process. The thermodynamics of the adsorption process are investigated to ascertain the spontaneity and exothermic nature of MB dye removal by Juglans Regia.
Significant Findings
Both ANN and RSM models are predicted the high adsorption efficiency, reaching up to 94.6 and 93.2 %, demonstrating the effectiveness of Juglans Regia as an adsorbent for MB removal. RSM and ANN models are strongly associated with R2 values of 0.9117 and 0.9373, respectively. Low Root mean square error (RMSE) and Hybrid fractional error function (HYBRID) computed error function values revealed good agreement between experimental results and model predictions. The study successfully validates the optimization process, leading to the maximum predicted adsorption efficiency values, and providing insights into optimal conditions for efficient MB removal. Thermodynamic analysis confirms that the adsorption process is exothermic and spontaneous, further supporting the potential of Juglans Regia in wastewater remediation of organic pollutants.
{"title":"Machine learning and modelling approach for removing methylene blue from aqueous solutions: Optimization, kinetics and thermodynamics studies","authors":"Sheetal Kumari , Seema Singh , Shang-Lien Lo , Pinki Sharma , Smriti Agarwal , Manoj Chandra Garg","doi":"10.1016/j.jtice.2024.105361","DOIUrl":"10.1016/j.jtice.2024.105361","url":null,"abstract":"<div><h3>Background</h3><div>The present study employs the <em>Juglans Regia</em>, a natural adsorbent, to investigate its efficiency in methylene blue (MB) removal from aqueous solutions. Advanced techniques like Artificial Neural Networks (ANN) and Response Surface Methodologies (RSM) are applied to model and predict the adsorptive behaviour of MB using <em>Juglans Regia</em> adsorbent. Different characterization techniques are utilised to understand the morphology and structure of the catalyst to provide insights into its potential adsorption capabilities.</div></div><div><h3>Methods</h3><div>The study uses ANN and RSM for predictive modelling, enabling a comprehensive comparison of their effectiveness in describing MB adsorption onto <em>Juglans Regia</em>. Kinetic analysis employing pseudo-2nd order kinetics and isotherm studies based on the Langmuir isotherm model are conducted to understand the kinetics and equilibrium behaviour of the adsorption process. The thermodynamics of the adsorption process are investigated to ascertain the spontaneity and exothermic nature of MB dye removal by <em>Juglans Regia</em>.</div></div><div><h3>Significant Findings</h3><div>Both ANN and RSM models are predicted the high adsorption efficiency, reaching up to 94.6 and 93.2 %, demonstrating the effectiveness of <em>Juglans Regia</em> as an adsorbent for MB removal. RSM and ANN models are strongly associated with R<sup>2</sup> values of 0.9117 and 0.9373, respectively. Low Root mean square error (RMSE) and Hybrid fractional error function (HYBRID) computed error function values revealed good agreement between experimental results and model predictions. The study successfully validates the optimization process, leading to the maximum predicted adsorption efficiency values, and providing insights into optimal conditions for efficient MB removal. Thermodynamic analysis confirms that the adsorption process is exothermic and spontaneous, further supporting the potential of <em>Juglans Regia</em> in wastewater remediation of organic pollutants.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"166 ","pages":"Article 105361"},"PeriodicalIF":5.5,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139552683","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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 : 2025-01-01DOI: 10.1016/j.jtice.2023.105068
Li Wen Liew , Mohammed JK Bashir , Pey Yi Toh , Motasem Y.D. Alazaiza , Salem S. Abu Amr , Kuan Shiong Khoo , Ratchaprapa Raksasat , Jun Wei Lim
Background
The high toxicity of landfill leachate has motivated to an investigation of economical and ecological treatment prior releasing into environment. Recently, microalgae have emerged as an alternative method due to its ability to recover nutrient and potential for bio-fuel production. However, the high concentrations of inhibitory compounds and ammoniacal nitrogen in young landfill leachates require high dilutions for microalgae to thrive. Hence, this study aims to evaluate the performance of microalgae by using stabilized landfill leachate with lower to no dilutions in nutrient removal, biomass and lipid production.
Methods
Leachate concentrations of 33, 44, 66, 89 and 100 v/v% were initially treated with the microalgae C. vulgaris. Parameters of chemical oxygen demand (COD), ammoniacal nitrogen (NH3–N), orthophosphate (PO43−), total phosphorus (TP) and colour removal were evaluated. Cost analysis was conducted to evaluate the economical appropriateness.
Significant findings
The highest removals were achieved at 43.67% of COD, >97% of NH3–N, 79.26% of PO43−, 77.64% of TP and 44.04% of colour. Highest biomass yield obtained was 220 mg/L by 89 v/v% of leachate concentration with 8.14% of lipid yield. Cost of treatment was calculated to be ∼$0.02 per m3 leachate. The feasibility of stabilized landfill leachate treatment without any dilutions using microalgae was attained as they can survive amidst this condition, perform nutrient removals, and produce biomass simultaneously.
{"title":"Microalgae cultivation in stabilized landfill leachate for simultaneous treatment and biomass production","authors":"Li Wen Liew , Mohammed JK Bashir , Pey Yi Toh , Motasem Y.D. Alazaiza , Salem S. Abu Amr , Kuan Shiong Khoo , Ratchaprapa Raksasat , Jun Wei Lim","doi":"10.1016/j.jtice.2023.105068","DOIUrl":"10.1016/j.jtice.2023.105068","url":null,"abstract":"<div><h3>Background</h3><div>The high toxicity of landfill leachate has motivated to an investigation of economical and ecological treatment prior releasing into environment. Recently, microalgae have emerged as an alternative method due to its ability to recover nutrient and potential for bio-fuel production. However, the high concentrations of inhibitory compounds and ammoniacal nitrogen in young landfill leachates require high dilutions for microalgae to thrive. Hence, this study aims to evaluate the performance of microalgae by using stabilized landfill leachate with lower to no dilutions in nutrient removal, biomass and lipid production.</div></div><div><h3>Methods</h3><div>Leachate concentrations of 33, 44, 66, 89 and 100 v/v% were initially treated with the microalgae <em>C. vulgaris</em>. Parameters of chemical oxygen demand (COD), ammoniacal nitrogen (NH<sub>3</sub>–N), orthophosphate (PO<sub>4</sub><sup>3−</sup>), total phosphorus (TP) and colour removal were evaluated. Cost analysis was conducted to evaluate the economical appropriateness.</div></div><div><h3>Significant findings</h3><div>The highest removals were achieved at 43.67% of COD, >97% of NH<sub>3</sub>–N, 79.26% of PO<sub>4</sub><sup>3−</sup>, 77.64% of TP and 44.04% of colour. Highest biomass yield obtained was 220 mg/L by 89 v/v% of leachate concentration with 8.14% of lipid yield. Cost of treatment was calculated to be ∼$0.02 per m<sup>3</sup> leachate. The feasibility of stabilized landfill leachate treatment without any dilutions using microalgae was attained as they can survive amidst this condition, perform nutrient removals, and produce biomass simultaneously.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"166 ","pages":"Article 105068"},"PeriodicalIF":5.5,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124916474","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Photocatalysis is a green, environmentally friendly approach for converting organic contaminants into harmless byproducts. Especially, Bismuth oxyhalides (BiOX, where X = Cl, Br and I) have emerged as promising photocatalysts for wastewater treatment due to their layered-by-layered structure, strong chemical stability and nontoxicity in compare to other metal oxides, which makes the photocatalyst advantageous for photocatalytic application.
Methods
This review provides an overview of recent developments in the synthesis and application of BiOX-based porous photocatalysts for the removal of organic contaminants from wastewater. Firstly, morphology-controlled synthesis of BiOX in degradation of organic contaminants. Then, modulation of electronic structure through doping, facet engineering and surface engineering has been highlighted for better photocatalytic applications. Furthermore, fabrication of diverse heterojunctions and co-catalyst loading upon BiOX are introduced, which can vary photocatalytic activity towards the degradation of organic contaminants.
Significant findings
Finally, this review ended on the future trend and prospects of BiOX for the creation of potential high-performance photocatalysts in the near future. The porous structure of BiOX improved photocatalytic activity, pollutant degradation efficiency, visible light response charge carrier separation, and stability. Overall, bismuth oxyhalide photocatalysts have a lot of potential for effective and long-term wastewater treatment, and their development represents an important step towards addressing the global water pollution crisis.
{"title":"A comprehensive review on tailoring factors of porous bismuth oxyhalide photocatalysts for wastewater treatment application","authors":"Prasenjit Kar , Govindasamy Sathiyan , K.E. Vivekanandan , Geetha Venkatesan , Govindasamy Siva , Ramesh Subramani , Sabariswaran Kandasamy","doi":"10.1016/j.jtice.2023.105234","DOIUrl":"10.1016/j.jtice.2023.105234","url":null,"abstract":"<div><h3>Background</h3><div>Photocatalysis is a green, environmentally friendly approach for converting organic contaminants into harmless byproducts. Especially, Bismuth oxyhalides (BiOX, where X = Cl, Br and I) have emerged as promising photocatalysts for wastewater treatment due to their layered-by-layered structure, strong chemical stability and nontoxicity in compare to other metal oxides, which makes the photocatalyst advantageous for photocatalytic application.</div></div><div><h3>Methods</h3><div>This review provides an overview of recent developments in the synthesis and application of BiOX-based porous photocatalysts for the removal of organic contaminants from wastewater. Firstly, morphology-controlled synthesis of BiOX in degradation of organic contaminants. Then, modulation of electronic structure through doping, facet engineering and surface engineering has been highlighted for better photocatalytic applications. Furthermore, fabrication of diverse heterojunctions and co-catalyst loading upon BiOX are introduced, which can vary photocatalytic activity towards the degradation of organic contaminants.</div></div><div><h3>Significant findings</h3><div>Finally, this review ended on the future trend and prospects of BiOX for the creation of potential high-performance photocatalysts in the near future. The porous structure of BiOX improved photocatalytic activity, pollutant degradation efficiency, visible light response charge carrier separation, and stability. Overall, bismuth oxyhalide photocatalysts have a lot of potential for effective and long-term wastewater treatment, and their development represents an important step towards addressing the global water pollution crisis.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"166 ","pages":"Article 105234"},"PeriodicalIF":5.5,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138519699","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Phenol, a toxic and carcinogenic compound found in industrial effluent, poses a severe threat to the environment and aquatic life. Conventional methods such as physio-chemical techniques have limitations in efficiency, cost, and sustainability, leading to the development of advanced hybrid approaches like the Moving Bed Biofilm Reactor (MBBR) to treat phenols.
Review method
In this study, we aimed at an in-depth review of MBBR for the remediation of phenolic wastewater at an industrial scale. The review uses a methodology that involves a comparative analysis of various conventional methods, including activated sludge process (ASP), sequencing batch biofilm reactor (SBBR), Fluidized Bed Biofilm Rector (FBBR), and trickling filter (TF) with MBBR, to determine their efficacy in phenol degradation. In this context, a thorough bibliometric assay of MBBR is carried out to understand the recent publication trends. The study also examines the impact of different types and shapes of bio-carriers and their filling ratios on phenol biodegradation.
Significant finding
The present work demonstrates the feasibility of using an aerobic MBBR along with a Fenton-like system (advanced oxidation processes) to treat phenolic effluent LCCA is discussed for selected treatment methods for assessing the sustainability aspects. In light of recent advancements, future research endeavors should prioritize the refinement and optimization of MBBR systems to strengthen their efficiency and sustainability, thus paving the way for a greener and cleaner future.
{"title":"Recent developments in moving bed biofilm reactor (MBBR) for the treatment of phenolic wastewater -A review","authors":"Zishan Aslam , Pervez Alam , Raisul Islam , Afzal Husain Khan , Hasara Samaraweera , Athar Hussain , Tasneem Imtiyaz Zargar","doi":"10.1016/j.jtice.2024.105517","DOIUrl":"10.1016/j.jtice.2024.105517","url":null,"abstract":"<div><h3>Background</h3><div>Phenol, a toxic and carcinogenic compound found in industrial effluent, poses a severe threat to the environment and aquatic life. Conventional methods such as physio-chemical techniques have limitations in efficiency, cost, and sustainability, leading to the development of advanced hybrid approaches like the Moving Bed Biofilm Reactor (MBBR) to treat phenols.</div></div><div><h3>Review method</h3><div>In this study, we aimed at an in-depth review of MBBR for the remediation of phenolic wastewater at an industrial scale. The review uses a methodology that involves a comparative analysis of various conventional methods, including activated sludge process (ASP), sequencing batch biofilm reactor (SBBR), Fluidized Bed Biofilm Rector (FBBR), and trickling filter (TF) with MBBR, to determine their efficacy in phenol degradation. In this context, a thorough bibliometric assay of MBBR is carried out to understand the recent publication trends. The study also examines the impact of different types and shapes of bio-carriers and their filling ratios on phenol biodegradation.</div></div><div><h3>Significant finding</h3><div>The present work demonstrates the feasibility of using an aerobic MBBR along with a Fenton-like system (advanced oxidation processes) to treat phenolic effluent LCCA is discussed for selected treatment methods for assessing the sustainability aspects. In light of recent advancements, future research endeavors should prioritize the refinement and optimization of MBBR systems to strengthen their efficiency and sustainability, thus paving the way for a greener and cleaner future.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"166 ","pages":"Article 105517"},"PeriodicalIF":5.5,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141029763","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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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