Adsorption最新文献

Temperature-dependent kinetic analysis of direct air capture using a gravimetric approach in porous environments

IF 3 4区工程技术

Adsorption Pub Date : 2025-04-01 DOI: 10.1007/s10450-025-00615-6

Yongqiang Wang, Dan Zhao, Gang Kevin Li

{"title":"Temperature-dependent kinetic analysis of direct air capture using a gravimetric approach in porous environments","authors":"Yongqiang Wang, Dan Zhao, Gang Kevin Li","doi":"10.1007/s10450-025-00615-6","DOIUrl":"10.1007/s10450-025-00615-6","url":null,"abstract":"<div><p>Adsorption kinetics has been regarded as one of the most critical factors determining the productivity and economic feasibility of direct air capture (DAC) of CO<sub>2</sub>, but has received relatively little attention compared with adsorption thermodynamics. One commonly used method for kinetics investigation is thermogravimetric analysis (TGA) which suffers from gas diffusion limitations and often underestimates adsorption rates. Here, a modified TGA system equipped with a porous self-made crucible was employed to address the gas diffusion challenges and analyze the kinetic behaviors of three polymeric chemisorbents, including Lewatit VP OC 1065, for DAC. The obtained adsorption kinetics were successfully applied to simulate and describe the breakthrough behaviors in a fixed-bed column. The CO<sub>2</sub> adsorption/desorption kinetics of chemisorbents with different amine structures or loadings were measured at various temperatures and described through the linear driving force model. The present work offers a reliable and fast kinetics analysis approach for DAC, paving the way for accurately collecting the kinetics parameters used for guiding further adsorbent and process design.</p><h3>Graphic abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":458,"journal":{"name":"Adsorption","volume":"31 4","pages":""},"PeriodicalIF":3.0,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10450-025-00615-6.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143740852","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}

引用次数: 0

Copper-containing porphyrin aluminum MOF, sorption of diethyl sulfide in air, its kinetics, mechanism, and the stoichiometric adsorption complex

IF 3 4区工程技术

Adsorption Pub Date : 2025-04-01 DOI: 10.1007/s10450-025-00626-3

Mohammad Shahwaz Ahmad, Alexander Samokhvalov

{"title":"Copper-containing porphyrin aluminum MOF, sorption of diethyl sulfide in air, its kinetics, mechanism, and the stoichiometric adsorption complex","authors":"Mohammad Shahwaz Ahmad, Alexander Samokhvalov","doi":"10.1007/s10450-025-00626-3","DOIUrl":"10.1007/s10450-025-00626-3","url":null,"abstract":"<div><p>Metal-organic frameworks (MOFs) are 3-dimensional coordination polymers which contain metals and organic linkers. MOFs are of strong interest in the fields of separation, catalysis, chemo-sensing, and pollution remediation. MOFs are highly desired, which have complex and controlled composition, structure and functional properties. Here, we report the copper porphyrin aluminum MOF (actAl-MOF-TCPPCu) denoted compound 4, and mechanistic and kinetic studies of adsorption of volatile organic sulfur compound, diethyl sulfide (DES) by it. The characterization is conducted by qualitative and quantitative methods, structural analysis with the Rietveld crystal lattice refinement, and complementary microscopy and spectroscopy. Then a comprehensive study of mechanism and kinetics of DES sorption is presented, under the dynamic conditions in the flow of air. The latter is conducted by a novel method of in-situ time-dependent ATR-FTIR spectroscopy in the controlled environment. The binding sites of DES include the µ(O–H), the COO<sup>−</sup> group, phenyl and pyrrole groups and they are ranked by the strengths of bonding. The kinetics of sorption obeys the Langmuir model of the pseudo-first order rate law with effective rate constant k<sub>eff</sub> = 0.95 ± 0.05 min<sup>− 1</sup>. Moreover, the linear dependence of kinetic rate constant on concentration of DES suggests that the sorption is diffusion limited. The sorption of DES in the static equilibrium conditions results in the binary stochiometric adsorption complex with formula (Al-MOF-TCPPCu)<sub>2</sub>(DES)<sub>7</sub>. Finally, a facile regeneration of the adsorption complex was achieved, without using chemicals. The copper-containing porphyrin aluminum MOF and related materials are promising for the removal of volatile organic sulfur compounds from air.</p></div>","PeriodicalId":458,"journal":{"name":"Adsorption","volume":"31 4","pages":""},"PeriodicalIF":3.0,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143740889","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}

引用次数: 0

Preparation and characterisation of chitosan-Hura crepitans pod biochar and evaluation of its fuel properties and adsorption capacity for methylene blue remediation

IF 3 4区工程技术

Adsorption Pub Date : 2025-04-01 DOI: 10.1007/s10450-025-00625-4

Obianuju L. Nwanji, Jonathan O. Babalola, Omotayo A. Arotiba

{"title":"Preparation and characterisation of chitosan-Hura crepitans pod biochar and evaluation of its fuel properties and adsorption capacity for methylene blue remediation","authors":"Obianuju L. Nwanji, Jonathan O. Babalola, Omotayo A. Arotiba","doi":"10.1007/s10450-025-00625-4","DOIUrl":"10.1007/s10450-025-00625-4","url":null,"abstract":"<div><p>Towards the beneficiation of agricultural waste for water treatment and energy, <i>Hura crepitans</i> pods (HC), pyrolysed at 500, 600 and 700 °C with holding times of 30 and 60 min, were modified with chitosan and used for the adsorption of methylene blue. The biochar was characterised using pH of point of zero charge (pHpzc), elemental analysis, BET, FTIR spectroscopy, XRD and SEM–EDX. The pHpzc of HC was 9.2 and elemental analysis showed that the % carbon of the biochar was higher than that of the feedstock. The higher heating value of HC biochar was greater than 20 MJ kg<sup>−1</sup>; projecting it as alternative solid-fuel source. The biochar appeared in the region for anthracite on van Krevelen diagram. Modification of the biochar with chitosan decreased the BET surface area. The FTIR spectra showed distinctive functional groups responsible for adsorption, XRD depicted the amorphous nature of the biochar. The adsorption capacity of HC biochar increased as the pyrolytic temperature and holding time increased from 500 to 700 °C and 30 to 60 min, respectively. Langmuir isotherm and pseudo-second order kinetic models gave the best fit to the experimental data. The monolayer adsorption capacity of HC7B biochar was 48.78 mg g<sup>−1</sup>. Thermodynamic parameters showed that the adsorption process was endothermic, disorderly and spontaneous. The mechanism of adsorption was mainly by non-electrostatic interaction such as π-π interaction. The highest percentage desorption was achieved with 0.1 M H<sub>2</sub>SO<sub>4</sub> and HC biochar was successfully regenerated after 5 cycles. <i>Hura crepitans</i> pod biochar was effective in the adsorption of MB from aqueous solution and modification with chitosan improved its adsorption capacity.</p></div>","PeriodicalId":458,"journal":{"name":"Adsorption","volume":"31 4","pages":""},"PeriodicalIF":3.0,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10450-025-00625-4.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143740853","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}

引用次数: 0

Enhanced sensitivity in bromochlorodifluoromethane detection: a comparative study of B12N12 and B12P12 nanocages

IF 3 4区工程技术

Adsorption Pub Date : 2025-03-27 DOI: 10.1007/s10450-025-00623-6

Ayesha Abrar, Qazi Muhammad Ahmed, Farrah Arshad, Nasir Shahzad, Khurshid Ayub, Nadeem S. Sheikh, Tabish Jadoon, Faizan Ullah

{"title":"Enhanced sensitivity in bromochlorodifluoromethane detection: a comparative study of B12N12 and B12P12 nanocages","authors":"Ayesha Abrar, Qazi Muhammad Ahmed, Farrah Arshad, Nasir Shahzad, Khurshid Ayub, Nadeem S. Sheikh, Tabish Jadoon, Faizan Ullah","doi":"10.1007/s10450-025-00623-6","DOIUrl":"10.1007/s10450-025-00623-6","url":null,"abstract":"<div><p>This Density Functional Theory (DFT) study, utilizing the B3LYP-D3 functional with a 6-311+ +G(d,p) basis set, explores the efficacy of B<sub>12</sub>N<sub>12</sub> and B<sub>12</sub>P<sub>12</sub> nanocages for detecting Bromochlorodifluoromethane (BCF), a potent greenhouse gas and ozone-depleting substance. Our investigations reveal that both B<sub>12</sub>P<sub>12</sub> and B<sub>12</sub>N<sub>12</sub> nanocages show a notable affinity for BCF. Specifically, B<sub>12</sub>P<sub>12</sub> nanocage demonstrates a stronger interaction with BCF, evidenced by an interaction energy of − 23.89 kJ mol<sup>−1</sup> compared to − 20.17 kJ mol<sup>−1</sup> for BCF@B<sub>12</sub>N<sub>12</sub>. The interaction energy, along with charge transfer and non-covalent interaction (NCI) analyses, confirms the physisorption nature of the BCF adsorption on the nanocages. UV/Vis spectroscopy predicts significant bathochromic shifts upon BCF adsorption, indicating potential for optical sensing. Moreover, BCF adsorption significantly reduces the HOMO-LUMO gap by 43.9% for BCF@B<sub>12</sub>P<sub>12</sub> and by 22.3% for BCF@B<sub>12</sub>N<sub>12</sub>, thereby enhancing conductivity. This increased conductivity can be converted to an electrical signal, that correlates with the presence of BCF in the environment, affirming the potential of these nanocages as effective BCF detectors.</p></div>","PeriodicalId":458,"journal":{"name":"Adsorption","volume":"31 4","pages":""},"PeriodicalIF":3.0,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143707068","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}

引用次数: 0

Ni-Pt bimetallic adsorbent for deep desulphurization of coked benzene

IF 3 4区工程技术

Adsorption Pub Date : 2025-03-22 DOI: 10.1007/s10450-025-00624-5

Jianzheng Jiang, Yunrui Li, Hui Tian, Haisheng Wei, Yao Wang, Xiaoping Chen, Xu Fang

{"title":"Ni-Pt bimetallic adsorbent for deep desulphurization of coked benzene","authors":"Jianzheng Jiang, Yunrui Li, Hui Tian, Haisheng Wei, Yao Wang, Xiaoping Chen, Xu Fang","doi":"10.1007/s10450-025-00624-5","DOIUrl":"10.1007/s10450-025-00624-5","url":null,"abstract":"<div><p>In the field of chemical engineering, achieving deep thiophene removal from coked benzene is a formidable challenge. This, coupled with the limitation of low sulfur capacity, has been major obstacle to the large-scale application of adsorption desulphurisation technology. In this study, Ni-Pt/Al<sub>2</sub>O<sub>3</sub>-CA adsorbent was prepared. The citric acid treated γ-Al<sub>2</sub>O<sub>3</sub> was used as the carrier, and Ni-Pt bimetal as the active component. The relationship between the microstructure and adsorption performance of the adsorbent was investigated by BET, XRD, SEM, TEM, TPR, XPS and Py-FTIR. The results showed that the Ni-Pt/Al<sub>2</sub>O<sub>3</sub>-CA adsorbent could not only reduce the thiophene content in benzene to less than 10 ppb but also had sulfur capacity of 2.73 mg S/g compared with the monometallic adsorbent. The adsorption performance of the Ni-Pt/Al<sub>2</sub>O<sub>3</sub>-CA adsorbent was restored to 95% of the initial one after three repetitive experiments. Meanwhile, based on the kinetic modelling results, the quasi-secondary kinetic model fitted the adsorption data of thiophene on Ni-Pt/Al<sub>2</sub>O<sub>3</sub>-CA adsorbent better. And the process of thiophene adsorption was described in depth in the diffusion model.</p></div>","PeriodicalId":458,"journal":{"name":"Adsorption","volume":"31 4","pages":""},"PeriodicalIF":3.0,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143668303","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}

引用次数: 0

A perspective on characterization of porous materials: the melting line and triple point

IF 3 4区工程技术

Adsorption Pub Date : 2025-03-22 DOI: 10.1007/s10450-025-00617-4

Rong An, Renxi Le, Keith E. Gubbins, Malgorzata Śliwinska-Bartkowiak, Matthias Thommes

引用次数: 0

Innovative pectin-based composite membranes: preparation, characterization and color pollutant separation from water 创新型果胶基复合膜：制备、表征和水中有色污染物分离

IF 3 4区工程技术

Adsorption Pub Date : 2025-03-22 DOI: 10.1007/s10450-025-00619-2

Ana Maria Tischer, Rafaela Reis Ferreira, Ionara de Fátima Ferreira, Derval dos Santos Rosa, Alexandre Tadeu Paulino

{"title":"Innovative pectin-based composite membranes: preparation, characterization and color pollutant separation from water","authors":"Ana Maria Tischer, Rafaela Reis Ferreira, Ionara de Fátima Ferreira, Derval dos Santos Rosa, Alexandre Tadeu Paulino","doi":"10.1007/s10450-025-00619-2","DOIUrl":"10.1007/s10450-025-00619-2","url":null,"abstract":"<div><p>The aim of the present study was to synthesise and characterise innovative pectin/pine sawdust/magnetite composite membranes as potential sorbents for the purification of water contaminated with color pollutants. Methylene blue (MB) was employed as the pollutant model for sorption. Fourier-transform infrared spectroscopy (FTIR) was performed to analyse the formation of crosslinked membrane chains and confirm the sorption processes of the dye molecules. Thermogravimetry (TGA) and derivative thermogravimetry (DTG) indicated that the polymer matrix is stable at low temperatures and begins to degrade at temperatures above 250 °C, whereas X-Ray diffraction (XRD) patterns confirmed crystalline and amorphous regions. Mechanical assays confirmed an increase in the modulus of elasticity and tensile strength of the biopolymer membranes after incorporating PS. Moreover, a reduction in mechanical deformation was found after the incorporation of Fe<sub>3</sub>O<sub>4</sub>. Pollutant separation experiments were performed in a pH range from 3.0 to 10.0 with initial pollutant concentrations of 5 to 25 mg L<sup>−1</sup> and separation times from 1 to 3050 min. Higher sorption capacity was found after 1800 min with an initial pollutant concentration of 20 mg L<sup>−1</sup> and pH 10.0. The best isotherm fit was found using the Redlich-Peterson model, with fits using the Langmuir model depending on the experimental conditions. The best kinetic fit was found using the pseudo-first-order or pseudo-second-order models at pH 3.0, with differences in more alkaline solutions. The pectin-based composite membranes proved to be viable options for the purification of wastewater from industry using dye and could also be tested for the photodegradation of organic pollutants in water due to the presence of Fe<sub>3</sub>O<sub>4</sub>.</p></div>","PeriodicalId":458,"journal":{"name":"Adsorption","volume":"31 4","pages":""},"PeriodicalIF":3.0,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143668302","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}

引用次数: 0

Exploring boron nitride’s potential in adsorbing light mercaptans for fuel desulfurization

IF 3 4区工程技术

Adsorption Pub Date : 2025-03-22 DOI: 10.1007/s10450-025-00620-9

Abbas Aleghafouri, Shohreh Fatemi, Ali Mohajeri

{"title":"Exploring boron nitride’s potential in adsorbing light mercaptans for fuel desulfurization","authors":"Abbas Aleghafouri, Shohreh Fatemi, Ali Mohajeri","doi":"10.1007/s10450-025-00620-9","DOIUrl":"10.1007/s10450-025-00620-9","url":null,"abstract":"<div><p>This study addresses the challenges of desulfurizing natural gas condensate through selective adsorption using hexagonal boron nitride (h-BN) material. h-BN was synthesized from thermal process of boric acid and mixture of urea and melamine with high specific surface area to be examined for light mercaptans removal from liquid fuel. characterization of synthesized adsorbent was done using X-ray diffraction, Fourier-transform infrared spectroscopy, field emission scanning electron microscopy (FESEM), elemental analysis (CHN and ICP), and nitrogen adsorption/desorption analysis. Our findings confirmed synthesizing h-BN with high specific surface area of 1263 m<sup>2</sup>/g and hydroxyl group. This product was used as the adsorbent of ethyl, propyl and butyl mercaptans from the solution of n-heptane as the model molecule of the gas condensate liquid to obtain the equilibrium isotherms’ and kinetic adsorption data. It was revealed that the adsorption capacities were determined as 89.29 mg S/g for ethyl mercaptan, 103.66 mg S/g for propyl mercaptan, and 120.91 mg S/g for butyl mercaptan, significantly surpassing the commercial zeolite 13X adsorbent by 233% at room temperature. Kinetic experiments revealed that the pseudo-second-order model could best describe the rate of mercaptans’ adsorption. Notably, the synthesized h-BN was easily regenerated through the thermal treatment at moderate temperature of 150 °C, highlighting its potential for cyclic adsorption processes of desulfurization.</p></div>","PeriodicalId":458,"journal":{"name":"Adsorption","volume":"31 4","pages":""},"PeriodicalIF":3.0,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143668305","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}

引用次数: 0

Slit-like pores are not always 1D: analysis of CH(_4) adsorption on clay minerals from 3D-cDFT and GCMC

IF 3 4区工程技术

Adsorption Pub Date : 2025-03-17 DOI: 10.1007/s10450-025-00621-8

Lucas J. dos Santos, Elvis do A. Soares, Amaro G. Barreto Jr., Frederico W. Tavares

引用次数: 0

A novel structured graphene oxide@microalgae nanohybrids as adsorbents for removal of Cr(VI) ions in aqueous solutions

IF 3 4区工程技术

Adsorption Pub Date : 2025-03-17 DOI: 10.1007/s10450-025-00614-7

Rolivhuwa Mulovhedzi, Kholiswa Yokwana, Timothy O. Ajiboye, Adeniyi S. Ogunlaja, Sabelo D. Mhlanga

{"title":"A novel structured graphene oxide@microalgae nanohybrids as adsorbents for removal of Cr(VI) ions in aqueous solutions","authors":"Rolivhuwa Mulovhedzi, Kholiswa Yokwana, Timothy O. Ajiboye, Adeniyi S. Ogunlaja, Sabelo D. Mhlanga","doi":"10.1007/s10450-025-00614-7","DOIUrl":"10.1007/s10450-025-00614-7","url":null,"abstract":"<div><p>Novel structured graphene oxide@microalgae-based nanohybrids have been prepared by incorporating green microalgae biomass (Algae) with graphene oxide (GO) or N-doped graphene oxide (NGO) in different ratios (e.g., 3:1, 1:1 and 1:3). Biogenic GO-Algae and NGO-Algae nanohybrids were synthesized <i>via</i> a self-assembly method. Morphological and structural characterizations and adsorption performance of the nanostructured material towards Cr(VI) species were studied extensively. The removal of Cr(VI) species by GO-Algae and NGO-Algae nanohybrids was highly pH dependent, with the maximum adsorption removal occurring at pH 2. The results indicate that the adsorption of Cr(VI) by GO-Algae and NGO-Algae nanohybrids was as follows: GO@Algae-3:1 (90.5%) < GO@Algae-1:1 (98.7%) < GO@Algae-1:3 (99.6%) and NGO@Algae-3:1 (79.2%) < NGO@Algae-1:1 (82.3%) < NGO@Algae-1:3 (92.6%), respectively. The GO: Algae-1:3 and NGO: Algae-1:3 nanohybrids with a high microalgae content ratio exhibited high maximum removal, owing to the presence of more active sites within their lattice compared to their counterparts. On the other hand, pseudo-first-order, pseudo-second-order, intraparticle diffusion, Langmuir, and Freundlich models adequately simulated adsorption mechanisms, suggesting that the adsorption process involved a combination of external mass transfer and chemisorption, with electrostatic and complexation interactions being the dominant mechanisms for Cr(VI) removal. Additionally, GO@Algae-1:3 and NGO@Algae-1:3 displayed outstanding reusability. Therefore, these structured graphene@microalgae-based nanohybrids can simultaneously serve as adsorbents for Cr(VI) removal from wastewater and contaminated water sources.</p></div>","PeriodicalId":458,"journal":{"name":"Adsorption","volume":"31 4","pages":""},"PeriodicalIF":3.0,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10450-025-00614-7.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143632524","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}

引用次数: 0