Adsorption Science & Technology最新文献

{"title":"Adsorption performance of calcium-aluminum layered double hydroxides synthesized from waste incineration fly ash for removal Pb(II) from water","authors":"Zheng Zhang, Xilin Chai, Haiying Wei, Yubing Duan, L. Xu, Z. M. Yang, R Chen","doi":"10.1177/02636174251409011","DOIUrl":"https://doi.org/10.1177/02636174251409011","url":null,"abstract":"The reduction and resource recovery of waste incineration fly ash represent a central focus of current research initiatives. In this study, Ca-Al-layered double hydroxides (LDHs) were prepared via a coprecipitation method using waste incineration fly ash as a calcium source combined with aluminum chloride. Their Pb 2+ adsorption capacities were compared with commercial LDHs and LDHs synthesized from chemical reagents. Results indicate that the optimal Ca/Al molar ratio for both fly ash-derived LDHs and reagent-synthesized LDHs was 2:1. The Pb 2+ adsorption capacities of fly ash-derived LDHs (FCA2), reagent-synthesized LDHs (CA2), and commercial LDHs (CL) were 1149.78 mg·g −1 , 1024.00 mg·g −1 , and 1069.34 mg·g −1 , respectively. After five regeneration cycles, FCA2 maintained stable adsorption performance, with Pb 2+ removal efficiency exceeding 95%. The synthesized LDHs were characterized by SEM, XRD, FTIR and BET, revealing that the dominant adsorption mechanisms included ion exchange, surface complexation, and precipitation. This study not only proposes a method for high-value resource utilization of waste incineration fly ash but also provides insights for aquatic heavy metal pollution control and hazardous waste management.","PeriodicalId":7315,"journal":{"name":"Adsorption Science & Technology","volume":"43 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147330477","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}

{"title":"The preparation of X-ETS-4 by ion-exchanged method and adsorption performance of C3F8/N2","authors":"Yao JiaCheng, Li Li, Yuan Wenhui","doi":"10.1177/02636174251404531","DOIUrl":"https://doi.org/10.1177/02636174251404531","url":null,"abstract":"Octafluoropropane (C 3 F 8 ) is widely used as etching agent in refrigeration, air conditioning and semiconductor industries. However, due to its long lifespan and strong infrared absorbing ability, once C 3 F 8 is emitted, the atmospheric radiation absorbing ability will be permanently altered, which will result in a serious greenhouse effect. Therefore, the efficient removal technology of C 3 F 8 is crucial in protecting the environment and alleviating the greenhouse effect. In this work, a series of X-ETS-4 (X: Mg, Ca, Sr, Ba) molecular sieves were synthesized by solvothermal and ion-exchange method. The morphology and structure of the prepared X-ETS-4 were characterized by FT-IR, XRD, and SEM, etc. The adsorption performance of the X-ETS-4 on C 3 F 8 are determined by fixed-bed adsorption breakthrough experiments and single-component isothermal adsorption experiments. The adsorption mechanism was investigated using different adsorption theoretical models. The results show that Ba-ETS-4 exhibits high adsorption capacity and high adsorption selectivity for C 3 F 8 , achieving C 3 F 8 adsorption separation at very low concentration (C 3 F 8 /N 2 volume ratio = 1:400). The saturated adsorption capacity of Ba-ETS-4 on C 3 F 8 reaches 155.17 mg/g (298 K, 170 kPa), which is 15.49 times more than that of Na-ETS-4. In addition, the ideal adsorption solution theory (IAST) separation selectivity of C 3 F 8 /N 2 reaches 341–941 in the pressure range of 0–170 kPa.","PeriodicalId":7315,"journal":{"name":"Adsorption Science & Technology","volume":"43 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147886148","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}

{"title":"Selective hydrometallurgical recovery of gold by using low-cost biomass waste: Kiwi peel","authors":"Dan Yu, Xiaomei Guo, Yang Liu","doi":"10.1177/02636174251371754","DOIUrl":"https://doi.org/10.1177/02636174251371754","url":null,"abstract":"Utilization of kiwi peel (KP) is proposed for gold recovery from electronic wastes (e-wastes). KP was simply modified by dehydration pretreatment with concentrated sulfuric acid. Among of the e-wastes metals, modified KP exhibited high selectivity on Au(III) adsorption. Ions dependencies on adsorption revealed that the increased chloride ion concentration has inhibition to Au(III) adsorption. After Au(III) adsorption, microscope images found gold particles on the adsorbents surface. X-ray diffraction analyses suggested that Au(III) reduction occurred along with the adsorption process, till the adsorption reached the equilibrium. Modified KP exhibited higher adsorption capacity (5.71 mmol g –1 ) than original KP (lower than 0.5 mmol g –1 ) or other natural adsorbents. Modification improved the adsorption capacity of KP. Gold was successfully recovered from the mixed precious metals through the adsorption and elution. KP waste is an applicable adsorbent with rich resource and high adsorption capacity.","PeriodicalId":7315,"journal":{"name":"Adsorption Science & Technology","volume":"43 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147889465","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}

{"title":"Phosphorus-modified Zr-based metal-organic framework materials for their effective removal of thorium from aqueous solutions","authors":"Yinghao Zhuang, Shuai Sun, Kai Jia, Lei Shi, Xiangshan Yang","doi":"10.1177/02636174241298776","DOIUrl":"https://doi.org/10.1177/02636174241298776","url":null,"abstract":"Thorium is a promising nuclear fuel; however, even a small amount in nuclear wastewater can cause significant radioactive pollution. Therefore, it is urgent to develop effective adsorbents for the efficient removal of thorium to solve this problem. Herein, the phytic acid modification of carboxylated Zirconium-based metal-organic framework materials (UiO-66-COOH-PA) has been obtained by rapid high-temperature carbonization, which exhibits excellent performance in removing thorium (IV) in acidic aqueous solutions. The maximum adsorption capacity of UiO-66-COOH-PA-2 (with 40% mass ratio of phytic acid) in solution reaches 315.5 mg/g at a pH of 4, which is more than twice that of the unmodified Zr-based metal organic framework (MOF) material. The adsorption kinetics of UiO-66-COOH-PA on thorium has been analyzed using two different isothermal adsorption models, the Langmuir and Freundlich isotherm adsorption models. It turns out that the Freundlich model is more suitable for the data. The thorium adsorption process reaches dynamic equilibrium very quickly, while the adsorption dynamics of UiO-66-COOH-PA on thorium follows the pseudo-second-order adsorption kinetic model. The excellent adsorption performance of UiO-66-COOH-PA-2 at low pH values indicates that adsorption material containing phosphorus is suitable for the removal of thorium especially in acidic systems. It also exhibits excellent selectivity (up to 90.2%) for Th(IV) adsorption in the presence of several coexisting rare-earth ions. Overall, the integration of phosphorus-modified in Zr-MOFs represents a significant advancement in thorium adsorption technology, offering a pathway toward more effective management of radioactive acidic waste liquid.","PeriodicalId":7315,"journal":{"name":"Adsorption Science & Technology","volume":"42 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147906030","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}

{"title":"Partial Purification of Anthocyanins (Brassica oleracea var. Rubra) from Purple Cabbage Using Natural and Modified Clays as Adsorbent","authors":"Darlyson Tavares Guimarães, Liana Maria Ramos Mendes, Luiz Bruno de Sousa Sabino, Edy Sousa de Brito, Enrique Vilarrasa-García, Enrique Rodríguez-Castellón, Juan Antonio Cecilia, Ivanildo José da Silva Junior","doi":"10.1155/2023/2724122","DOIUrl":"https://doi.org/10.1155/2023/2724122","url":null,"abstract":"This research is aimed at evaluating strategies for the adsorption and recovery of anthocyanins present in purple cabbage using natural and modified clays as adsorbent. In the batch adsorption experiments, the anthocyanin extracts were put in contact with the adsorbents, and different parameters were evaluated to determine the best conditions for their adsorption and recovery. It was noted that the highest levels of adsorption (28.0 mg g^-1) occurred using a porous clay heterostructure (PCH) material as adsorbent, with a mass of 25 mg and 120 min of contact. Under the same conditions, the sepiolite only presented an adsorption capacity of 14.0 mg g^-1. The desorption results showed that the 60% methanolic solution recovered 60% of the anthocyanins adsorbed on PCH, while the 80% ethanolic solution recovered 35% of those adsorbed on sepiolite. The eluted anthocyanin solutions showed a 98% lower sugar concentration than the crude extract, indicating the low affinity of the adsorbents for sugars. Six types of acylated cyanidins were identified via UPLC-QToF-MSE in the extract, and it was confirmed from the FTIR analyses that the highest affinity of the clays occurred with the anthocyanins that presented more organic acid in their structure. The results show that PCH and sepiolite have high selectivity for anthocyanins and low affinity for the sugars present in the plant extract, facilitating the process of partial purification and application of these pigments.","PeriodicalId":7315,"journal":{"name":"Adsorption Science & Technology","volume":"15 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2023-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138579578","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}

{"title":"Dual Role of Fe2+ in the Galena Flotation and Influence on Selective Separation","authors":"Bo Yang, Xiao Wang, Xian Xie, Zixuan Yang","doi":"10.1155/2023/1660716","DOIUrl":"https://doi.org/10.1155/2023/1660716","url":null,"abstract":"Fe ions, as one of the unavoidable metal ions, are present in flotation pulp as ferric and ferrous species, and the effect of ferric species on the flotation behavior of sulfide minerals has been widely discussed in the above literatures. However, the effect of ferrous species has rarely been noticed. In this paper, the effect of ferrous species on the flotation behavior and surface characteristics of galena was investigated by using microflotation, zeta potential measurements, X-ray photoelectron spectrometer (XPS) analysis, and density functional theory (DFT) calculations. Microflotation tests indicated that the flotation recovery of galena with potassium butyl xanthate (KBX) as collector was significantly decreased with the addition of Fe²⁺ in the pulp, and the recovery was further decreased with increasing dosage of Fe²⁺. In addition, the finer the galena particles, the greater the decrease in flotation recovery. Zeta potential analysis illustrated that the isoelectric point (IEP) was shifted from 4.4 to 5.8 due to the adsorption of ferrous hydroxyl complexes on the galena surface and the zeta potential. XPS surface analysis suggested that the surface oxidation of galena was alleviated by the consumption of O₂ in the pulp, which reduced the adsorption of the collector KBX on and the oxidation of xanthates to dixanthogens. Density functional theory (DFT) calculations confirmed that the ferrous hydroxyl complex FeOH⁺ could be adsorbed on the galena surface by interactions between Fe and S atoms.","PeriodicalId":7315,"journal":{"name":"Adsorption Science & Technology","volume":"21 9","pages":""},"PeriodicalIF":2.9,"publicationDate":"2023-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138510182","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}

{"title":"Removal of Pb(II) from Aqueous Solutions with Manganese Oxide-Modified Diatomite","authors":"Huynh Thanh Danh, Nguyen Thi Truc Ly, Vanthan Nguyen, Dinh Quang Khieu, Pham Dinh Du","doi":"10.1155/2023/7744896","DOIUrl":"https://doi.org/10.1155/2023/7744896","url":null,"abstract":"In the present work, natural diatomite modified with manganese oxide (MnO<sub>2</sub>) was prepared via direct redox reaction with KMnO<sub>4</sub> and HCl. The product was characterized by using X-ray diffraction, Fourier-transform infrared spectroscopy, scanning electron microscopy, transmission electron microscopy, energy-dispersive X-ray, and nitrogen adsorption-desorption isotherms. It was found that the nanorod manganese oxide was highly dispersed onto the diatomite porous matrix. The specific surface area of the obtained manganese oxide/diatomite (<span><svg height=\"14.9947pt\" style=\"vertical-align:-3.4033pt\" version=\"1.1\" viewbox=\"-0.0498162 -11.5914 33.954 14.9947\" width=\"33.954pt\" xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\"><g transform=\"matrix(.013,0,0,-0.013,0,0)\"></path></g><g transform=\"matrix(.0091,0,0,-0.0091,6.071,3.132)\"></path></g><g transform=\"matrix(.0091,0,0,-0.0091,11.385,3.132)\"></path></g><g transform=\"matrix(.0091,0,0,-0.0091,16.518,3.132)\"></path></g><g transform=\"matrix(.013,0,0,-0.013,26.323,0)\"></path></g></svg><span></span><span><svg height=\"14.9947pt\" style=\"vertical-align:-3.4033pt\" version=\"1.1\" viewbox=\"37.536183799999996 -11.5914 58.534 14.9947\" width=\"58.534pt\" xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\"><g transform=\"matrix(.013,0,0,-0.013,37.586,0)\"></path></g><g transform=\"matrix(.013,0,0,-0.013,43.826,0)\"></path></g><g transform=\"matrix(.013,0,0,-0.013,50.066,0)\"></path></g><g transform=\"matrix(.013,0,0,-0.013,53.03,0)\"></path></g><g transform=\"matrix(.013,0,0,-0.013,61.445,0)\"></path></g><g transform=\"matrix(.0091,0,0,-0.0091,72.132,-5.741)\"></path></g><g transform=\"matrix(.013,0,0,-0.013,79.254,0)\"></path></g><g transform=\"matrix(.0091,0,0,-0.0091,85.361,-5.741)\"></path></g><g transform=\"matrix(.0091,0,0,-0.0091,90.921,-5.741)\"></path></g></svg>)</span></span> is larger than that of natural diatomite (<span><svg height=\"14.9947pt\" style=\"vertical-align:-3.4033pt\" version=\"1.1\" viewbox=\"-0.0498162 -11.5914 33.954 14.9947\" width=\"33.954pt\" xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\"><g transform=\"matrix(.013,0,0,-0.013,0,0)\"><use xlink:href=\"#g113-84\"></use></g><g transform=\"matrix(.0091,0,0,-0.0091,6.071,3.132)\"><use xlink:href=\"#g190-67\"></use></g><g transform=\"matrix(.0091,0,0,-0.0091,11.385,3.132)\"><use xlink:href=\"#g190-70\"></use></g><g transform=\"matrix(.0091,0,0,-0.0091,16.518,3.132)\"><use xlink:href=\"#g190-85\"></use></g><g transform=\"matrix(.013,0,0,-0.013,26.323,0)\"><use xlink:href=\"#g117-34\"></use></g></svg><span></span><span><svg height=\"14.9947pt\" style=\"vertical-align:-3.4033pt\" version=\"1.1\" viewbox=\"37.536183799999996 -11.5914 58.534 14.9947\" width=\"58.534pt\" xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\"><g transform=\"matrix(.013,0,0,-0.013,37.586,0)\"><use xlink:href=\"#g113-54\"></use></g><g transform=\"matrix(.013,0,0,-0.013,43.826,0)\"><use xlink:href=\"#g113-54","PeriodicalId":7315,"journal":{"name":"Adsorption Science & Technology","volume":"22 12","pages":""},"PeriodicalIF":2.9,"publicationDate":"2023-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138510122","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}

{"title":"Investigation of the Zeta Adsorption Model and Gas-Solid Adsorption Phase Transition Mechanism Using Statistical Mechanics at Gas-Solid Interfaces","authors":"Di Zhang","doi":"10.1155/2023/8899160","DOIUrl":"https://doi.org/10.1155/2023/8899160","url":null,"abstract":"This review examines the significance of the zeta adsorption model in physics and its integration with statistical mechanics within the field of interface adsorption. Through a comprehensive analysis of existing research, this study presents the collective findings and insights derived from the reviewed literature. The zeta adsorption model, proposed by Ward, has gained recognition for its seamless extension into the thermal disequilibrium region without encountering singularities. By incorporating principles from quantum mechanics and statistical thermodynamics, this model offers fresh perspectives on the adsorption of gas molecules on solid surfaces. Notably, it demonstrates enhanced accuracy in describing the adsorption performance of mesoporous materials and nanomaterial surfaces, surpassing the limitations of traditional models such as the BET isotherm. Additionally, this review explores the behavior of cluster formation under varying temperature and pressure conditions. It highlights the correlation between increasing pressure ratios and the decreased availability of empty adsorption sites, resulting in the formation of larger clusters within the adsorbate. Ultimately, this process leads to a transition from adsorption to condensation, where the liquid phase wets the solid surface. Moreover, the zeta adsorption model provides a solid theoretical foundation for understanding crucial aspects of gas-solid interface adsorption. It enables the determination of the distribution of adsorbate clusters on gas-solid interfaces, facilitates the identification of wetting pressure ratios during phase transitions, and allows for the calculation of solid surface tension under conditions of zero adsorption. Noteworthy parameters such as the bonding strength (<i>β</i>) between the solid surface and adsorbed atoms significantly influence the overall strength of the solid-fluid interaction. Furthermore, the phenomenon of surface subcooling, which necessitates sufficient energy for the transformation from adsorbed vapor to condensate liquid, plays a pivotal role in studying interface phase transitions. Additionally, this review investigates the thermodynamic stability of the adsorbate through an analysis of molar latent heat. It reveals that beyond a critical adsorbate coverage, the formation of critical-sized clusters and the ensuing interactions among these components render the adsorbate unstable. This instability prompts a transition from the interface to a liquid phase, followed by subsequent adsorption onto the surface. In summary, this literature review highlights the significant contributions of the zeta adsorption model to the field of physics, particularly in the context of interface adsorption. It serves as a valuable tool for studying various materials and cluster formation, thanks to its seamless extension into the thermal disequilibrium region and its incorporation of principles from quantum mechanics and statistical thermodynamics. By presenting","PeriodicalId":7315,"journal":{"name":"Adsorption Science & Technology","volume":"23 6","pages":""},"PeriodicalIF":2.9,"publicationDate":"2023-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138510121","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}

{"title":"Sulphuric Acid-Modified Coal Fly Ash for the Removal of Rhodamine B Dye from Water Environment: Isotherm, Kinetics, and Thermodynamic Studies","authors":"G. Bharath Balji, P. Senthil Kumar","doi":"10.1155/2023/2808794","DOIUrl":"https://doi.org/10.1155/2023/2808794","url":null,"abstract":"Among the wide variety of dyes present in the environment, cationic dyes are more toxic and have complex structure. The adsorption process of rhodamine B dye was successfully carried out by sulphuric acid-treated inexpensive modified fly ash (MFA) adsorbent via batch experiments. The nature of the adsorbent was characterized by techniques, namely, Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), X-ray diffraction (XRD), and thermogravimetric analysis (TGA). The maximum removal efficiency of RhB dye was found to be 99.78% by using 0.5 g of adsorbent dosage in 50 mg/L of dye concentration. The SEM images displayed the porous nature of the adsorbent where the EDS analysis displays the elemental compositions present in the adsorbent. XRD pattern shows the crystallinity nature of the adsorbent. Among the batch study parameters, effect of pH plays an important role in the adsorption process. The pH of 4 was found to be an ideal setting for the efficient removal of the dye RhB. The preferable elimination ability was found by keeping the dosage at 5 g/L, contact time 120 min, and dye concentration at 50 mg/L. Adsorption capacity was found to be 36.36 mg/g. This shows the ability of the MFA for the removal of wastewater contaminants. This adsorption process is well suited for the Freundlich isotherm, which displaces the process as a multilayer adsorption. Studies in kinetics and thermodynamics demonstrate that the process was well suited for its exothermic nature and pseudo-second-order. Thermal regeneration studies were carried out, and the adsorbent was effectively recycled and utilized up to four more times with minimal loses in its effectiveness. Therefore, from these obtained results, it is clear that the MFA is an effective adsorbent for the effective removal of dyes from wastewater.","PeriodicalId":7315,"journal":{"name":"Adsorption Science & Technology","volume":"41 15","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135041969","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}

{"title":"Enhanced Adsorption of Rose Bengal Dye from Aqueous Solution Using NaOH Activated Hydrochar Derived from Corncob Waste","authors":"R. Sivaranjanee, P. Senthil Kumar","doi":"10.1155/2023/6695350","DOIUrl":"https://doi.org/10.1155/2023/6695350","url":null,"abstract":"A potential approach to the preparation of affordable activated hydrochar is the hydrothermal carbonization of biomass wastes. In this study, hydrochar was made by hydrothermally carbonizing corncob wastes and then activating them with sodium hydroxide (NaOH). According to the findings, the adsorption capabilities of hydrochar generated at prolonged retention durations, lesser liquid-to-solid ratios, and elevated temperatures were considerably greater. The hydrochars were then analyzed utilizing a variety of characterization methods, and batch tests involving the sorption of rose bengal dye were carried out under a variety of conditions. According to the findings, activated hydrochar has a specific surface area of 12.794 m2/g. In order to better understand and characterize the process of rose bengal dye adsorption, sorption kinetics, and sorption equilibrium onto the produced hydrochars, sorption kinetics and isotherms were further examined through experimental data fitting. The NaOH-activated hydrochar’s adsorption capacity was 799.9 mg/g, respectively. The objective of this research was to assess the viability of using NaOH-activated hydrochar derived from corncobs as an economical and efficient sorbent for eliminating anionic dyes like rose bengal from aqueous solutions. Additionally, the study sought to investigate how various factors influence its sorption capabilities and to provide insights into the adsorption process through kinetic and isotherm analyses.","PeriodicalId":7315,"journal":{"name":"Adsorption Science & Technology","volume":" 39","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135340806","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}