Pub Date : 2024-05-05DOI: 10.1007/s10450-024-00480-9
Milivoj Lovrić
A model of desorption from the surface of rotating disk into the solution of surface active substance is developed for Frumkin isotherm. The time needed to approach the first equilibrium within 1% of error is investigated. For desorption this means to acquire the highest surface coverage, and for adsorption the lowest coverage that is in the equilibrium with the bulk of solution. If the equilibrium isotherm is S shaped, the near equilibrium isotherms are characterised by big changes of coverage that are caused by small increments of bulk concentrations. These changes require very long near equilibrating times because they are driven by small fluxes of dissolved surfactant. These times are the second component of the hysteresis.
针对弗鲁姆金等温线,建立了一个从旋转盘表面解吸到表面活性物质溶液中的模型。研究了在 1%误差范围内接近第一平衡所需的时间。对于解吸来说,这意味着获得最高的表面覆盖率,而对于吸附来说,则是获得与溶液体积平衡的最低覆盖率。如果平衡等温线呈 S 型,则近平衡等温线的特点是,体积浓度的微小增量会引起覆盖率的巨大变化。这些变化需要很长的近平衡时间,因为它们是由溶解的表面活性剂的小流量驱动的。这些时间是滞后的第二部分。
{"title":"Simulation of the adsorption – desorption hysteresis for Frumkin isotherm","authors":"Milivoj Lovrić","doi":"10.1007/s10450-024-00480-9","DOIUrl":"10.1007/s10450-024-00480-9","url":null,"abstract":"<div><p>A model of desorption from the surface of rotating disk into the solution of surface active substance is developed for Frumkin isotherm. The time needed to approach the first equilibrium within 1% of error is investigated. For desorption this means to acquire the highest surface coverage, and for adsorption the lowest coverage that is in the equilibrium with the bulk of solution. If the equilibrium isotherm is S shaped, the near equilibrium isotherms are characterised by big changes of coverage that are caused by small increments of bulk concentrations. These changes require very long near equilibrating times because they are driven by small fluxes of dissolved surfactant. These times are the second component of the hysteresis.</p></div>","PeriodicalId":458,"journal":{"name":"Adsorption","volume":"30 6","pages":"957 - 964"},"PeriodicalIF":3.0,"publicationDate":"2024-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140881579","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 : 2024-04-29DOI: 10.1007/s10450-024-00478-3
Taiba Bashir, Joydeep Dutta, Shaista Masarat, George Z. Kyzas
A simple manual flow injection method was used to formulate chitosan-lignin composite beads in a ratio of 1:1. The beads were then characterized using FT-IR (Fourier Transform Infrared Spectroscopy), SEM (Scanning Electron Microscopy), TGA (Thermogravimetric Analysis), and XRD (X-ray Diffraction). The FT-IR results indicate the chemical composition, revealing the presence of C-O, NH, C-H, and OH on chitosan, as well as OH, C-O-C, C = C, -O-CH3, and C-H, showing the presence and dispersion of lignin within chitosan molecules. SEM was useful for looking at the surface shape and showed structural differences between pure chitosan (which had a smooth surface with few holes) and composite beads (which had sharp edges and a rough, wrinkled shape). The TGA sheds light on the thermal stability and degradation properties of the beads. The thermograms show a similar pattern; however, the degradation temperature improved with the addition of lignin. An XRD investigation revealed the crystalline nature of the beads. Chitosan beads showed a sharp peak at 2θ = 21.8°, whereas in composites, the first peak was observed at 2θ = 9.9° second at 2θ = 20.130° and the third at 2θ = 28°. These findings allowed for the possibility that chitosan/lignin composite beads may be a good adsorbent for use in wastewater treatment systems.
{"title":"Formulation and characterization of lignin modified chitosan beads","authors":"Taiba Bashir, Joydeep Dutta, Shaista Masarat, George Z. Kyzas","doi":"10.1007/s10450-024-00478-3","DOIUrl":"10.1007/s10450-024-00478-3","url":null,"abstract":"<div><p>A simple manual flow injection method was used to formulate chitosan-lignin composite beads in a ratio of 1:1. The beads were then characterized using FT-IR (Fourier Transform Infrared Spectroscopy), SEM (Scanning Electron Microscopy), TGA (Thermogravimetric Analysis), and XRD (X-ray Diffraction). The FT-IR results indicate the chemical composition, revealing the presence of C-O, NH, C-H, and OH on chitosan, as well as OH, C-O-C, C = C, -O-CH3, and C-H, showing the presence and dispersion of lignin within chitosan molecules. SEM was useful for looking at the surface shape and showed structural differences between pure chitosan (which had a smooth surface with few holes) and composite beads (which had sharp edges and a rough, wrinkled shape). The TGA sheds light on the thermal stability and degradation properties of the beads. The thermograms show a similar pattern; however, the degradation temperature improved with the addition of lignin. An XRD investigation revealed the crystalline nature of the beads. Chitosan beads showed a sharp peak at 2<i>θ</i> = 21.8°, whereas in composites, the first peak was observed at 2<i>θ</i> = 9.9° second at 2<i>θ</i> = 20.130° and the third at 2<i>θ</i> = 28°. These findings allowed for the possibility that chitosan/lignin composite beads may be a good adsorbent for use in wastewater treatment systems.</p></div>","PeriodicalId":458,"journal":{"name":"Adsorption","volume":"30 6","pages":"947 - 955"},"PeriodicalIF":3.0,"publicationDate":"2024-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140812657","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 : 2024-04-29DOI: 10.1007/s10450-024-00441-2
Ana Lorena de Brito Soares, Erika Patrícia Chagas Gomes Luz, Rodrigo Silveira Vieira
The bone regeneration process is complex and challenging and requires the application of biomaterials to promote adequate tissue growth and repair. Biomaterials traditionally used are produced with biocompatible and bioinert metal alloys, not presenting any response in the recipient tissue, whether negative, such as inflammation and infections, or positive, such as rapid and effective healing of the injured tissue. Using biomaterials with an active compound adsorbed in their structure allows a direct interaction between the material and the injured tissue, and consequent modulation of biological responses to promote bone formation. Such biomaterials can facilitate the adhesion of osteoprogenitor cells and other important biological factors for bone tissue regeneration and remodeling. This review explores the importance of considering adsorption during biomaterials production and understanding the bone regeneration process. In addition, focus is given to biomaterials produced from biopolymers based on cellulose and hydroxyapatite, as well as mechanisms of bone regeneration. Challenges remain for optimizing these processes, and the adsorption properties of different materials must be carefully investigated to guarantee adequate interaction with bone tissues and cells. Furthermore, the development of strategies to control the release of adsorbed components is crucial to obtain efficient and targeted bone tissue regeneration.
{"title":"Adsorption processes for forming biomaterials of cellulose and hydroxyapatite for applications in bone tissue regeneration","authors":"Ana Lorena de Brito Soares, Erika Patrícia Chagas Gomes Luz, Rodrigo Silveira Vieira","doi":"10.1007/s10450-024-00441-2","DOIUrl":"10.1007/s10450-024-00441-2","url":null,"abstract":"<div><p>The bone regeneration process is complex and challenging and requires the application of biomaterials to promote adequate tissue growth and repair. Biomaterials traditionally used are produced with biocompatible and bioinert metal alloys, not presenting any response in the recipient tissue, whether negative, such as inflammation and infections, or positive, such as rapid and effective healing of the injured tissue. Using biomaterials with an active compound adsorbed in their structure allows a direct interaction between the material and the injured tissue, and consequent modulation of biological responses to promote bone formation. Such biomaterials can facilitate the adhesion of osteoprogenitor cells and other important biological factors for bone tissue regeneration and remodeling. This review explores the importance of considering adsorption during biomaterials production and understanding the bone regeneration process. In addition, focus is given to biomaterials produced from biopolymers based on cellulose and hydroxyapatite, as well as mechanisms of bone regeneration. Challenges remain for optimizing these processes, and the adsorption properties of different materials must be carefully investigated to guarantee adequate interaction with bone tissues and cells. Furthermore, the development of strategies to control the release of adsorbed components is crucial to obtain efficient and targeted bone tissue regeneration.</p></div>","PeriodicalId":458,"journal":{"name":"Adsorption","volume":"30 5","pages":"595 - 607"},"PeriodicalIF":3.0,"publicationDate":"2024-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140812654","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 : 2024-04-27DOI: 10.1007/s10450-024-00477-4
Ankita Doi, Mainak Ganguly, Mamta Sahu
Dyes are one of the most threatening toxins released from industry. Methylene blue (MB) is one of the extremely common dyes in the textile industry. Being complicated in structure and non-biodegradable in nature, removing MB from the aqueous environment is a great challenge. Elimination of dye is usually performed in two ways, degradation, and adsorption. Iron-based nanoparticles, being biocompatible and non-expensive, became a hot field of research in the context of the elimination of toxic dyes. In our review article, we consolidated the data about the synthesis, nature, state, and applications of iron-based nanoparticles to remove MB dye from aqueous solutions specifically via adsorption and degradation. We also reviewed the effect of doping on nanoparticles and their effects on dye removal capacity. Physiological factors such as pH, and temperature play an important role in iron-based nanoparticle synthesis as well as dye degradation and adsorption. A comparative account between adsorption and degradation was tried to depict the elimination of dye in various aspects including efficiency and mechanism.
{"title":"A comparative account on the elimination of methylene blue via iron-based nanoparticle: adsorption vs. degradation","authors":"Ankita Doi, Mainak Ganguly, Mamta Sahu","doi":"10.1007/s10450-024-00477-4","DOIUrl":"10.1007/s10450-024-00477-4","url":null,"abstract":"<p>Dyes are one of the most threatening toxins released from industry. Methylene blue (MB) is one of the extremely common dyes in the textile industry. Being complicated in structure and non-biodegradable in nature, removing MB from the aqueous environment is a great challenge. Elimination of dye is usually performed in two ways, degradation, and adsorption. Iron-based nanoparticles, being biocompatible and non-expensive, became a hot field of research in the context of the elimination of toxic dyes. In our review article, we consolidated the data about the synthesis, nature, state, and applications of iron-based nanoparticles to remove MB dye from aqueous solutions specifically via adsorption and degradation. We also reviewed the effect of doping on nanoparticles and their effects on dye removal capacity. Physiological factors such as pH, and temperature play an important role in iron-based nanoparticle synthesis as well as dye degradation and adsorption. A comparative account between adsorption and degradation was tried to depict the elimination of dye in various aspects including efficiency and mechanism.</p>","PeriodicalId":458,"journal":{"name":"Adsorption","volume":"30 7","pages":"1603 - 1630"},"PeriodicalIF":3.0,"publicationDate":"2024-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140799954","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 : 2024-04-22DOI: 10.1007/s10450-024-00462-x
Qin Guangle, Zhang Gan, Chen Dapeng, Sha Jingjie
End-stage renal disease is a global health issue, and there is a growing trend of younger individuals being affected by this condition. In order to save time for patient undergoing dialysis treatment and allow them to return to social life, a portable dialysis device called wearable artificial kidney is quite necessary. The dialysate recycling system serves as a fundamental component of the wearable artificial kidney. It effectively eliminates various toxins from the waste dialysate and gets regenerated dialysate for subsequent dialysis sessions. However, the low capacity of urea treatment has been a difficult problem to overcome. In this study, our primary focus was to investigate the optimal modification conditions for activated carbon modified with sulfuric acid. We fabricated water vapor activation of coconut shell activated carbon and modified activated carbon of various mesh sizes with sulfuric acid solution. The samples were subjected to characterization, and adsorption experiments were conducted to evaluate their performance in adsorbing creatinine and urea. It was ultimately concluded that the samples obtained by treating 200 mesh activated carbon with 6 mol/L sulfuric acid solution exhibited superior adsorption capacity.
{"title":"Adsorption of uremic toxins by modified activated carbon of different mesh with sulfuric acid","authors":"Qin Guangle, Zhang Gan, Chen Dapeng, Sha Jingjie","doi":"10.1007/s10450-024-00462-x","DOIUrl":"10.1007/s10450-024-00462-x","url":null,"abstract":"<div><p>End-stage renal disease is a global health issue, and there is a growing trend of younger individuals being affected by this condition. In order to save time for patient undergoing dialysis treatment and allow them to return to social life, a portable dialysis device called wearable artificial kidney is quite necessary. The dialysate recycling system serves as a fundamental component of the wearable artificial kidney. It effectively eliminates various toxins from the waste dialysate and gets regenerated dialysate for subsequent dialysis sessions. However, the low capacity of urea treatment has been a difficult problem to overcome. In this study, our primary focus was to investigate the optimal modification conditions for activated carbon modified with sulfuric acid. We fabricated water vapor activation of coconut shell activated carbon and modified activated carbon of various mesh sizes with sulfuric acid solution. The samples were subjected to characterization, and adsorption experiments were conducted to evaluate their performance in adsorbing creatinine and urea. It was ultimately concluded that the samples obtained by treating 200 mesh activated carbon with 6 mol/L sulfuric acid solution exhibited superior adsorption capacity.</p></div>","PeriodicalId":458,"journal":{"name":"Adsorption","volume":"30 6","pages":"935 - 946"},"PeriodicalIF":3.0,"publicationDate":"2024-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140673746","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}
Reduced silver mordenite has been considered as a sorbent for the capture of organic iodides, especially methyl iodide, from off-gases produced by aqueous used nuclear fuel reprocessing operations. The adsorption capacity of this material has been unpredictable especially when NOx and water are present. Previous work has found that a catalytic decomposition reaction is occurring on the surface but few determinations have been made of the kinetics of this reaction. The work presented tested the adsorption behavior and apparent catalytic reaction rate in humid conditions and compared those to dry conditions testing. Both experiments observed a first order reaction with rate constants of 0.0847 L/g sorbent/s and 0.1202 L/g sorbent/s respectively. Such a reduction in apparent rate constant is possibly due to either water obstructing methyl iodide adsorption or product desorption limitation. Changes in the adsorption profile were also apparent between these two, with the humid conditions experiment reaching saturation sooner than the dry conditions experiment. Additionally, an experiment into the effects of sorbent storage in a controlled laboratory environment was performed. The performance of the sorbent materials that were stored with silver in the zerovalent state was slightly inferior to those materials that were stored in ionic form (Ag+) and reduced to zerovalent silver immediately prior to subjecting them to sorption test. The materials stored with silver in the ionic form (and reduced just prior to application) behaved essentially similarly to the freshly synthesized (and reduced) sorbents in the sorption tests. This suggests that zerovalent silver experiences some oxidation resulting in deactivation of some sites.
{"title":"Effects of moisture and aging upon decomposition of methyl iodide by reduced silver mordenite","authors":"Heinrik Goettsche, Krishnan Raja, Piyush Sabbarwall, Vivek Utgikar","doi":"10.1007/s10450-024-00473-8","DOIUrl":"10.1007/s10450-024-00473-8","url":null,"abstract":"<div><p>Reduced silver mordenite has been considered as a sorbent for the capture of organic iodides, especially methyl iodide, from off-gases produced by aqueous used nuclear fuel reprocessing operations. The adsorption capacity of this material has been unpredictable especially when NO<sub>x</sub> and water are present. Previous work has found that a catalytic decomposition reaction is occurring on the surface but few determinations have been made of the kinetics of this reaction. The work presented tested the adsorption behavior and apparent catalytic reaction rate in humid conditions and compared those to dry conditions testing. Both experiments observed a first order reaction with rate constants of 0.0847 L/g sorbent/s and 0.1202 L/g sorbent/s respectively. Such a reduction in apparent rate constant is possibly due to either water obstructing methyl iodide adsorption or product desorption limitation. Changes in the adsorption profile were also apparent between these two, with the humid conditions experiment reaching saturation sooner than the dry conditions experiment. Additionally, an experiment into the effects of sorbent storage in a controlled laboratory environment was performed. The performance of the sorbent materials that were stored with silver in the zerovalent state was slightly inferior to those materials that were stored in ionic form (Ag<sup>+</sup>) and reduced to zerovalent silver immediately prior to subjecting them to sorption test. The materials stored with silver in the ionic form (and reduced just prior to application) behaved essentially similarly to the freshly synthesized (and reduced) sorbents in the sorption tests. This suggests that zerovalent silver experiences some oxidation resulting in deactivation of some sites.</p></div>","PeriodicalId":458,"journal":{"name":"Adsorption","volume":"30 6","pages":"915 - 924"},"PeriodicalIF":3.0,"publicationDate":"2024-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10450-024-00473-8.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140626588","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 : 2024-04-21DOI: 10.1007/s10450-024-00468-5
Williane dos S. Francisco, Daniel Rapachi, Andrei V. Igansi, Caroline P. Ruas, Flávio A. Pavan, Luiz A. A. Pinto, Tito R. S. Cadaval Jr., Marcos A. Gelesky
Eragrostis plana Nees is an invasive species in Brazilian territory, known for its high levels of lignin, cellulose, and hemicellulose, making it a valuable raw material for activated carbon (AC) production. In this study, AC derived from Eragrostis plana Nees leaves was investigated as an adsorbent for silver nanoparticles (AgNPs). Kinetics, equilibrium, and thermodynamic assays were conducted to assess AgNPs adsorption onto AC. The AC exhibited a substantial surface area of 1030 m2 g−1 and demonstrated significant adsorption capacity for AgNPs. Both the pseudo-second-order and Langmuir models were found to best describe the kinetics and equilibrium of adsorption, with the highest adsorption capacity observed at 55 °C, reaching 140.19 mg g−1 according to the Langmuir model. Thermodynamic analysis revealed an enthalpy change (∆H°) of 60.75 kJ mol−1 and an entropy change (∆S°) of 0.2711 kJ mol−1 K−1, indicating that the adsorption process is spontaneous and endothermic. Additionally, the AgNPs/AC composite exhibited excellent catalytic activity in the 4-nitrophenol reduction, achieving a conversion rate of 97% within 10 min.
Eragrostis plana Nees 是巴西境内的一种入侵物种,以含有大量木质素、纤维素和半纤维素而闻名,是生产活性炭(AC)的宝贵原料。本研究将从 Eragrostis plana Nees 叶片中提取的活性炭作为银纳米颗粒(AgNPs)的吸附剂进行了研究。研究人员对 AC 吸附 AgNPs 的动力学、平衡和热力学进行了评估。AC 的表面积高达 1030 m2 g-1,对 AgNPs 具有显著的吸附能力。根据 Langmuir 模型,在 55 °C 时的吸附容量最高,达到 140.19 mg g-1。热力学分析表明,吸附焓变(ΔH°)为 60.75 kJ mol-1,熵变(ΔS°)为 0.2711 kJ mol-1 K-1,表明吸附过程是自发的、内热的。此外,AgNPs/AC 复合材料在 4-硝基苯酚还原过程中表现出优异的催化活性,在 10 分钟内转化率达到 97%。
{"title":"Adsorption of silver nanoparticles by activated carbon from Eragrostis plana Nees: kinetics, equilibrium, and catalytic application in the degradation of 4-nitrophenol","authors":"Williane dos S. Francisco, Daniel Rapachi, Andrei V. Igansi, Caroline P. Ruas, Flávio A. Pavan, Luiz A. A. Pinto, Tito R. S. Cadaval Jr., Marcos A. Gelesky","doi":"10.1007/s10450-024-00468-5","DOIUrl":"10.1007/s10450-024-00468-5","url":null,"abstract":"<p><i>Eragrostis plana</i> Nees is an invasive species in Brazilian territory, known for its high levels of lignin, cellulose, and hemicellulose, making it a valuable raw material for activated carbon (AC) production. In this study, AC derived from <i>Eragrostis plana</i> Nees leaves was investigated as an adsorbent for silver nanoparticles (AgNPs). Kinetics, equilibrium, and thermodynamic assays were conducted to assess AgNPs adsorption onto AC. The AC exhibited a substantial surface area of 1030 m<sup>2</sup> g<sup>−1</sup> and demonstrated significant adsorption capacity for AgNPs. Both the pseudo-second-order and Langmuir models were found to best describe the kinetics and equilibrium of adsorption, with the highest adsorption capacity observed at 55 °C, reaching 140.19 mg g<sup>−1</sup> according to the Langmuir model. Thermodynamic analysis revealed an enthalpy change (∆H°) of 60.75 kJ mol<sup>−1</sup> and an entropy change (∆S°) of 0.2711 kJ mol<sup>−1</sup> K<sup>−1</sup>, indicating that the adsorption process is spontaneous and endothermic. Additionally, the AgNPs/AC composite exhibited excellent catalytic activity in the 4-nitrophenol reduction, achieving a conversion rate of 97% within 10 min.</p>","PeriodicalId":458,"journal":{"name":"Adsorption","volume":"30 6","pages":"925 - 933"},"PeriodicalIF":3.0,"publicationDate":"2024-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140623374","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 : 2024-04-20DOI: 10.1007/s10450-024-00460-z
T. Tamer, M. Abou-Krisha, A. Omer, A. Alhamzani, M. Youssef, T. Yousef, R. Khalifa, M. Salem, M. Mohy-Eldin
The nano-Sulphonated Poly (glycidyl methacrylate)-Hexamethyl Pararosaniline Chloride (Crystal Violet; CV) composite (CV-SPGMA) has been developed as a novel adsorbent for treatment of Dichromate and Permanganate Contaminated Waste Water for the first time. The innovative adsorbent has been developed by adsorption of CV dye from wastewater using nano-Sulphonated Poly (glycidyl methacrylate) (SPGMA) particles. The study investigated the impact of various adsorption parameters. The CV content was observed to be linearly increased by variations in the concentration of CV up to 200 mg/L where maximum content obtained; 174.6 mg/g. The equilibrium almost reached after 90 min. An endothermic nature of the CV adsorption process has been noticed where 178 mg/g CV content obtained at 80 °C. The CV content decreased from 240 mg/g to 46 mg/g with the SPGMA adsorbent dose increment from 5 to 40 mg. The pH of adsorption exhibited the most pronounced impact, with the highest CV content achieved at a pH of 10.0 corresponding to 190.4 mg/g. The reusability of the produced CV-SPGMA adsorbent was examined for consecutive adsorption–desorption cycles, revealing a loss of just 13% in its initial adsorption efficiency after 10 cycles. In addition, the alterations in the chemical structure and morphology caused by the development of CV-SPGMA composite were observed through the utilization of characterization techniques including Fourier-transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and energy-dispersive X-ray spectroscopy (EDAX). Finally, the developed CV-SPGMA composite adsorbent, for the first time, tested for the removal of Cr (VI) and Mn (VII) metal ions from dichromate and permanganate contaminated waters under mild adsorption conditions where shows seven folds affinity towards removal of the Cr (VI), 84.6 mg/g, than Mn (VII), 11.66 mg/g.
{"title":"Nano-Sulphonated Poly (glycidyl methacrylate)-Hexamethyl Pararosaniline chloride novel composite adsorbent development for treatment of dichromate and permanganate contaminated waste water","authors":"T. Tamer, M. Abou-Krisha, A. Omer, A. Alhamzani, M. Youssef, T. Yousef, R. Khalifa, M. Salem, M. Mohy-Eldin","doi":"10.1007/s10450-024-00460-z","DOIUrl":"10.1007/s10450-024-00460-z","url":null,"abstract":"<div><p>The nano-Sulphonated Poly (glycidyl methacrylate)-Hexamethyl Pararosaniline Chloride (Crystal Violet; CV) composite (CV-SPGMA) has been developed as a novel adsorbent for treatment of Dichromate and Permanganate Contaminated Waste Water for the first time. The innovative adsorbent has been developed by adsorption of CV dye from wastewater using nano-Sulphonated Poly (glycidyl methacrylate) (SPGMA) particles. The study investigated the impact of various adsorption parameters. The CV content was observed to be linearly increased by variations in the concentration of CV up to 200 mg/L where maximum content obtained; 174.6 mg/g. The equilibrium almost reached after 90 min. An endothermic nature of the CV adsorption process has been noticed where 178 mg/g CV content obtained at 80 °C. The CV content decreased from 240 mg/g to 46 mg/g with the SPGMA adsorbent dose increment from 5 to 40 mg. The pH of adsorption exhibited the most pronounced impact, with the highest CV content achieved at a pH of 10.0 corresponding to 190.4 mg/g. The reusability of the produced CV-SPGMA adsorbent was examined for consecutive adsorption–desorption cycles, revealing a loss of just 13% in its initial adsorption efficiency after 10 cycles. In addition, the alterations in the chemical structure and morphology caused by the development of CV-SPGMA composite were observed through the utilization of characterization techniques including Fourier-transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and energy-dispersive X-ray spectroscopy (EDAX). Finally, the developed CV-SPGMA composite adsorbent, for the first time, tested for the removal of Cr (VI) and Mn (VII) metal ions from dichromate and permanganate contaminated waters under mild adsorption conditions where shows seven folds affinity towards removal of the Cr (VI), 84.6 mg/g, than Mn (VII), 11.66 mg/g.</p></div>","PeriodicalId":458,"journal":{"name":"Adsorption","volume":"30 6","pages":"877 - 890"},"PeriodicalIF":3.0,"publicationDate":"2024-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140626418","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 : 2024-04-20DOI: 10.1007/s10450-024-00458-7
M. Saranya Devi, T. Daniel Thangadurai, Sankarasekaran Shanmugaraju, Chithirai Pon Selvan, Yong Ill Lee
The scientific community is becoming increasingly interested in the production of activated carbon (AC) using pyrolyzed biomass wastes as potential sustainable precursors. Both chemical and physical methods may have a significant impact on the chemical and physical properties of AC, making it suitable for a variety of applications such as water pollution treatment, CO2 capture, dye, and heavy metal (HM) removal, and energy storage. The properties of AC are significantly influenced by feedstock composition, pyrolysis conditions, and carbon activation parameters. In comparison to traditional AC, activated biochar appears to be a new potentially cost-effective, and environmentally friendly carbon material with a wide range of applications. Walnut is a well-known member of the Juglandaceae family. Walnut Shell (WS) is extremely tough and degrades very slowly, and the multiple synthesis procedures employ the shell to prepare AC. In this review article, a detailed list of products and different applications of AC from the WS is provided. The cited results explain the optimal conditions for an adsorption process, which include pH, adsorbent dosage, temperature, agitation speed, contact time, efficiency, adsorption capacity, fitting model, kinetics, and thermodynamics. In addition, it also describes the removal of a few organic compounds, and energy storage applications using parameters such as BET, different electrolytes, and specific capacitance.
科学界对利用热解生物质废物作为潜在的可持续前体生产活性炭(AC)的兴趣与日俱增。化学和物理方法都可能对活性炭的化学和物理性质产生重大影响,使其适用于多种应用,如水污染处理、二氧化碳捕获、染料和重金属(HM)去除以及能源储存。活性生物碳的特性受原料成分、热解条件和碳活化参数的影响很大。与传统的活性炭相比,活性生物炭似乎是一种具有潜在成本效益的新型环保炭材料,具有广泛的应用前景。核桃是著名的胡桃科植物。核桃壳(WS)非常坚硬,降解速度非常慢,多种合成程序都使用核桃壳来制备 AC。在这篇综述文章中,详细列举了从核桃壳制备 AC 的产品和不同应用。引用的结果解释了吸附过程的最佳条件,包括 pH 值、吸附剂用量、温度、搅拌速度、接触时间、效率、吸附容量、拟合模型、动力学和热力学。此外,它还介绍了几种有机化合物的去除情况,以及利用 BET、不同电解质和比电容等参数的储能应用。
{"title":"Biomass waste from walnut shell for pollutants removal and energy storage: a review on waste to wealth transformation","authors":"M. Saranya Devi, T. Daniel Thangadurai, Sankarasekaran Shanmugaraju, Chithirai Pon Selvan, Yong Ill Lee","doi":"10.1007/s10450-024-00458-7","DOIUrl":"10.1007/s10450-024-00458-7","url":null,"abstract":"<div><p>The scientific community is becoming increasingly interested in the production of activated carbon (AC) using pyrolyzed biomass wastes as potential sustainable precursors. Both chemical and physical methods may have a significant impact on the chemical and physical properties of AC, making it suitable for a variety of applications such as water pollution treatment, CO<sub>2</sub> capture, dye, and heavy metal (HM) removal, and energy storage. The properties of AC are significantly influenced by feedstock composition, pyrolysis conditions, and carbon activation parameters. In comparison to traditional AC, activated biochar appears to be a new potentially cost-effective, and environmentally friendly carbon material with a wide range of applications. Walnut is a well-known member of the <i>Juglandaceae</i> family. Walnut Shell (WS) is extremely tough and degrades very slowly, and the multiple synthesis procedures employ the shell to prepare AC. In this review article, a detailed list of products and different applications of AC from the WS is provided. The cited results explain the optimal conditions for an adsorption process, which include pH, adsorbent dosage, temperature, agitation speed, contact time, efficiency, adsorption capacity, fitting model, kinetics, and thermodynamics. In addition, it also describes the removal of a few organic compounds, and energy storage applications using parameters such as BET, different electrolytes, and specific capacitance.</p></div>","PeriodicalId":458,"journal":{"name":"Adsorption","volume":"30 6","pages":"891 - 913"},"PeriodicalIF":3.0,"publicationDate":"2024-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140626417","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 : 2024-04-19DOI: 10.1007/s10450-024-00476-5
Ali Mehdikhani, Esmaeil Salahi, Jahangir Shahmoradi
To develop atmospheric water harvesting (AWH) technology, Zeolite 13X (Z) powder was hydrothermally produced with the addition of different grain sizes of carbon black additive (C) to adsorb air moisture at night and release the water adsorbed by solar irradiation during the day. Various characterization techniques were utilized, including X-ray diffractometry, Brunauer–Emmett–Teller (BET) nitrogen adsorption, field emission scanning electron microscopy (FESEM), UV‒Vis analysis, and a solar simulator, It was determined that the composition of 95%zeolite 13X-5% carbon black with a particle size of ~50 nanometers (ZC55) yielded the best result. The mentioned composition (ZC55) after one hour of exposure under a standard solar simulator flux of 1000 W/m2 by bringing the temperature of the composition to 110°C achieved the highest moisture removal in the composite. This compound evaporated 50% of the adsorbed water after one hour (0.15 g/g), from 0.31 g/g sorption capacity.
{"title":"Carbon/zeolite 13X composition for atmospheric water harvesting (AWH) application in arid regions","authors":"Ali Mehdikhani, Esmaeil Salahi, Jahangir Shahmoradi","doi":"10.1007/s10450-024-00476-5","DOIUrl":"10.1007/s10450-024-00476-5","url":null,"abstract":"<div><p>To develop atmospheric water harvesting (AWH) technology, Zeolite 13X (Z) powder was hydrothermally produced with the addition of different grain sizes of carbon black additive (C) to adsorb air moisture at night and release the water adsorbed by solar irradiation during the day. Various characterization techniques were utilized, including X-ray diffractometry, Brunauer–Emmett–Teller (BET) nitrogen adsorption, field emission scanning electron microscopy (FESEM), UV‒Vis analysis, and a solar simulator, It was determined that the composition of 95%zeolite 13X-5% carbon black with a particle size of ~50 nanometers (ZC55) yielded the best result. The mentioned composition (ZC55) after one hour of exposure under a standard solar simulator flux of 1000 W/m<sup>2</sup> by bringing the temperature of the composition to 110°C achieved the highest moisture removal in the composite. This compound evaporated 50% of the adsorbed water after one hour (0.15 g/g), from 0.31 g/g sorption capacity.</p></div>","PeriodicalId":458,"journal":{"name":"Adsorption","volume":"30 6","pages":"859 - 865"},"PeriodicalIF":3.0,"publicationDate":"2024-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140626358","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}