1
|
Omer AM, El-Sayed M, Abd El-Monaem EM, El-Subruiti GM, Eltaweil AS. Graphene oxide@Fe 3O 4-decorated iota-carrageenan composite for ultra-fast and highly efficient adsorption of lead (II) from water. Int J Biol Macromol 2023; 253:127437. [PMID: 37839607 DOI: 10.1016/j.ijbiomac.2023.127437] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 10/05/2023] [Accepted: 10/12/2023] [Indexed: 10/17/2023]
Abstract
The aggravated problem of lead pollution, especially in aquatic environments, necessitates the development of eminent adsorbents that could radically solve this environmental problem. Hence, a new composite was constructed based on iota carrageenan (i.Carr), graphene oxide (GO) and magnetite (Fe3O4) for removing noxious Pb2+ ions. The GO@Fe3O4-i.Carr composite was characterized by VSM, SEM, XPS, XRD, FTIR and Zeta potential. The removal of Pb2+ ions attained a quick equilibrium of almost 30 min with a removal efficiency reaching 93.68 %. The removal of Pb2+ was boosted significantly, in the order of GO@Fe3O4-i.Carr(1:1) > GO@Fe3O4-i.Carr(1:3) > GO@Fe3O4-i.Carr(3:1). Moreover, acquired experimental data fitted the pseudo 2nd order kinetic model and Freundlich isotherm model with a maximal monolayer adsorption capacity reached 440.05 mg/g. Notably, after five adsorption runs, the composite maintained its removal efficiency exceeding 74 %. The assumed adsorption mechanisms of Pb2+ onto GO@Fe3O4-i.Carr were complexation, precipitation, Lewis acid-base, and electrostatic attraction forces. Overall, the GO@Fe3O4-i.Carr composite elucidated the auspicious adsorbent criteria, comprising fast adsorption with high performance, ease-separation and tolerable recyclability, advising its feasible use to decontaminate water bodies from hazardous heavy metals.
Collapse
Affiliation(s)
- Ahmed M Omer
- Polymer Materials Research Department, Advanced Technology and New Materials Research Institute (ATNMRI), City of Scientific Research an d Technological Applications (SRTA - City), New Borg El -Arab City, P. O. Box: 21934, Alexandria, Egypt.
| | - Mohamed El-Sayed
- Chemistry Department, Faculty of Science, Alexandria University, Alexandria, Egypt; The Egyptian Ethylene and Derivatives Company (ETHYDCO), Egypt
| | - Eman M Abd El-Monaem
- Chemistry Department, Faculty of Science, Alexandria University, Alexandria, Egypt.
| | - Gehan M El-Subruiti
- Chemistry Department, Faculty of Science, Alexandria University, Alexandria, Egypt
| | | |
Collapse
|
2
|
Huang M, Wang H, Xiao Y, Li K. Carbonized titanium dioxide with good adsorption properties for cationic dyes via simple heat treatment. J Chem Phys 2023; 158:2895230. [PMID: 37290073 DOI: 10.1063/5.0146751] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Accepted: 05/22/2023] [Indexed: 06/10/2023] Open
Abstract
With the development of modern industry, the discharge of dye wastewater is increasing year by year, and the damage caused by this wastewater to the ecosystem is often irreversible. Therefore, the research on the harmless treatment of dyes has attracted much attention in recent years. In this paper, commercial titanium dioxide (anatase nanometer titanium dioxide) was heat treated with anhydrous ethanol to synthesize titanium carbide (C/TiO2). Its maximum adsorption capacity for cationic dyes methylene blue (MB) and Rhodamine B is 27.3 and 124.6 mg g-1, respectively, which is much higher than that of pure TiO2. The adsorption kinetics and isotherm model of C/TiO2 were studied and characterized by Brunauer-Emmett-Teller, x-ray photoelectron spectroscopy, x-ray diffraction, Fourier transform infrared spectroscopy, and other methods. The results show that the carbon layer on the surface of C/TiO2 promotes the increase in surface hydroxyl groups, which is the main reason for the increase in MB adsorption. Compared with other adsorbents, C/TiO2 showed excellent reusability. The experimental results of adsorbent regeneration showed that the adsorption rate R% of MB was almost unchanged after three cycles. During the recovery of C/TiO2, the dyes adsorbed on its surface are removed, which solves the problem that the adsorbent cannot degrade dyes simply by adsorption. Additionally, C/TiO2 has a stable adsorption effect, is insensitive to the pH value, has a simple preparation process, and has relatively low raw material prices, making it suitable for large-scale operation. Therefore, it has good commercial prospects in the organic dye industry wastewater treatment.
Collapse
Affiliation(s)
- Maoliang Huang
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, China
| | - Hongwei Wang
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, China
| | - Yue Xiao
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, China
| | - Kang Li
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, China
| |
Collapse
|
3
|
Vievard J, Alem A, Pantet A, Ahfir ND, Arellano-Sánchez MG, Devouge-Boyer C, Mignot M. Bio-Based Adsorption as Ecofriendly Method for Wastewater Decontamination: A Review. Toxics 2023; 11:toxics11050404. [PMID: 37235220 DOI: 10.3390/toxics11050404] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Revised: 04/19/2023] [Accepted: 04/21/2023] [Indexed: 05/28/2023]
Abstract
Intense human activities have for years contributed to the pollution of the environment by many dangerous pollutants such as heavy metals, pesticides, or polycyclic aromatic hydrocarbons. There are many conventional methods used to control pollution, with practical and/or financial drawbacks. Therefore, in recent years, an innovative, easy-to-implement and inexpensive adsorption method has been developed to recover waste and clean up water from micropollutants. Firstly, this article aims to summarize the issues related to water remediation and to understand the advantages and disadvantages of the methods classically used to purify water. In particular, this review aims to provide a recent update of the bio-based adsorbents and their use. Differently from the majority of the reviews related to wastewater treatment, in this article several classes of pollutants are considered. Then, a discussion about the adsorption process and interactions involved is provided. Finally, perspectives are suggested about the future work to be done in this field.
Collapse
Affiliation(s)
- Juliette Vievard
- University Le Havre Normandie, UNIHAVRE, UMR 6294 CNRS, LOMC, 76600 Le Havre, France
- University Rouen Normandie, UNIROUEN, COBRA UMR CNRS 6014, INSA, Avenue de l'Université, 76800 Saint-Etienne-du-Rouvray, France
| | - Abdellah Alem
- University Le Havre Normandie, UNIHAVRE, UMR 6294 CNRS, LOMC, 76600 Le Havre, France
| | - Anne Pantet
- University Le Havre Normandie, UNIHAVRE, UMR 6294 CNRS, LOMC, 76600 Le Havre, France
| | - Nasre-Dine Ahfir
- University Le Havre Normandie, UNIHAVRE, UMR 6294 CNRS, LOMC, 76600 Le Havre, France
| | - Mónica Gisel Arellano-Sánchez
- University Rouen Normandie, UNIROUEN, COBRA UMR CNRS 6014, INSA, Avenue de l'Université, 76800 Saint-Etienne-du-Rouvray, France
| | - Christine Devouge-Boyer
- University Rouen Normandie, UNIROUEN, COBRA UMR CNRS 6014, INSA, Avenue de l'Université, 76800 Saint-Etienne-du-Rouvray, France
| | - Mélanie Mignot
- University Rouen Normandie, UNIROUEN, COBRA UMR CNRS 6014, INSA, Avenue de l'Université, 76800 Saint-Etienne-du-Rouvray, France
| |
Collapse
|
4
|
Laouameur K, Flilissa A, Lemaoui CE, Ferkous H, Benguerba Y. Study of the effect of current intensity on the structural performance of electrogenerated mesoporous aluminum phosphate: application for adsorption. Environ Sci Pollut Res Int 2023; 30:27510-27524. [PMID: 36385339 DOI: 10.1007/s11356-022-23578-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Accepted: 10/07/2022] [Indexed: 06/16/2023]
Abstract
To keep up with the development of contaminants in the water supply, it is required to create new adsorbents or improve current ones. The adsorption capacity of AlPO4 electrocoagulated with varying current intensities was examined. AlPO4 was produced by electrolysis in a NaCl solution using aluminum electrodes and a 0.1 M phosphate buffer at varying current intensities. Current efficiency was enhanced. X-ray diffraction (XRD), scanning electron microscopy (SEM), and Fourier transform infrared spectroscopy were used to analyze the adsorbents (FTIR). The specific surface area was estimated by the quantity of methylene blue adsorbed by particles in an aqueous solution. Numerous operating factors must be addressed, including pH, starting concentration, adsorbent dose, and contact duration. The electrostatic interaction between positively charged MB molecules and negatively charged adsorbents drives adsorption at alkaline pH. When describing equilibrium adsorption, the Langmuir model is more accurate. Modeling using an adsorption isotherm may further improve the predicted specific surface area. At 0.2 amperes, the observed specific surface area was 2.86 m2/g.
Collapse
Affiliation(s)
- Khaoula Laouameur
- Laboratoire Des Maladies Cardiovasculaires Génétiques Et Nutritionnelles, Faculté de Médecine Département de Pharmacie, Ferhat ABBAS University of Setif-1, Sétif, Algeria
| | - Abdenacer Flilissa
- Laboratoire Des Maladies Cardiovasculaires Génétiques Et Nutritionnelles, Faculté de Médecine Département de Pharmacie, Ferhat ABBAS University of Setif-1, Sétif, Algeria
| | - Charaf Eddine Lemaoui
- Laboratoire Des Maladies Cardiovasculaires Génétiques Et Nutritionnelles, Faculté de Médecine Département de Pharmacie, Ferhat ABBAS University of Setif-1, Sétif, Algeria
| | - Hana Ferkous
- Laboratoire de Génie Mécanique Et Matériaux, Faculté de Technologie, Université de 20 Août 1955, 21000, Skikda, Algeria
- Département de Technologie, Université 20 août 1955 de Skikda, 21000, Skikda, Algeria
| | - Yacine Benguerba
- Laboratoire de Biopharmacie Et Pharmacotechnie (LBPT), Ferhat Abbas Setif 1 University, Setif, Algeria.
| |
Collapse
|
5
|
Rocha S, Félix R, Valente MJ, Bento-Silva A, Rebelo R, Amorim CG, Araújo ADN, Moreira R, Santos-Silva A, Montenegro MCBSM. Polysulfone Membranes Doped with Human Neutrophil Elastase Inhibitors: Assessment of Bioactivity and Biocompatibility. Membranes (Basel) 2023; 13:89. [PMID: 36676896 PMCID: PMC9861744 DOI: 10.3390/membranes13010089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/30/2022] [Revised: 11/25/2022] [Accepted: 01/03/2023] [Indexed: 06/17/2023]
Abstract
The use of polysulfone (PSU) hemodialysis (HD) membranes modified with bioactive compounds has gained relevance in chronic kidney disease (CKD) management. Compounds based on the 4-oxo-β-lactam scaffold have outstanding inhibitory ability and selectivity for human neutrophil elastase (HNE). The present work aimed to evaluate the bioactivity and biocompatibility of PSU-based HD membranes doped with HNE inhibitors (HNEIs). For this, two 4-oxo-β-lactam derivates (D4L-1 and D4L-2) synthesized in house were used, as well as a commercial HNEI (Sivelestat), for comparison purposes. Their HNE inhibition efficacy was evaluated in in vitro and ex vivo (incubations with human plasma) assay conditions. All biomaterials were bioactive and hemocompatible. The inhibitory capacity of the HNEIs and HNEI-PSU membranes in vitro was D4L-1 > D4L-2 > Sivelestat and D4L-2 > Sivelestat > D4L-1, respectively. In ex vivo conditions, both HNEIs and HNEI-PSU materials presented the same relative inhibitory ability (D4L-1 > D4L-2 > Sivelestat). The difference observed between in vitro and ex vivo conditions is most likely due to the inherent lipophilicity/hydrophobicity of each HNEI influencing their affinity and accessibility to HNE when trapped in the membrane. Compared to Sivelestat, both D4L-1 and D4L-2 (and the respective doped membranes) have more potent inhibition capabilities. In conclusion, this work reports the successful development of PSU membranes functionalized with HNEIs.
Collapse
Affiliation(s)
- Susana Rocha
- UCIBIO—Applied Molecular Biosciences Unit, Biochemistry Laboratory, Department of Biological Sciences, Faculty of Pharmacy, University of Porto, 4050-313 Porto, Portugal
- Associate Laboratory i4HB—Institute for Health and Bioeconomy, Faculty of Pharmacy, University of Porto, 4050-313 Porto, Portugal
| | - Rita Félix
- Faculty of Pharmacy, University of Lisbon and Research Institute for Medicines (iMed.ULisboa), 1649-003 Lisbon, Portugal
| | - Maria João Valente
- National Food Institute, Technical University of Denmark, 2800 Kongens Lyngby, Denmark
| | | | - Rute Rebelo
- LAQV/REQUIMTE, Applied Chemistry Laboratory, Department of Chemical Sciences, Faculty of Pharmacy, University of Porto, 4050-313 Porto, Portugal
| | - Célia Gomes Amorim
- LAQV/REQUIMTE, Applied Chemistry Laboratory, Department of Chemical Sciences, Faculty of Pharmacy, University of Porto, 4050-313 Porto, Portugal
| | - Alberto da Nova Araújo
- LAQV/REQUIMTE, Applied Chemistry Laboratory, Department of Chemical Sciences, Faculty of Pharmacy, University of Porto, 4050-313 Porto, Portugal
| | - Rui Moreira
- Faculty of Pharmacy, University of Lisbon and Research Institute for Medicines (iMed.ULisboa), 1649-003 Lisbon, Portugal
| | - Alice Santos-Silva
- UCIBIO—Applied Molecular Biosciences Unit, Biochemistry Laboratory, Department of Biological Sciences, Faculty of Pharmacy, University of Porto, 4050-313 Porto, Portugal
- Associate Laboratory i4HB—Institute for Health and Bioeconomy, Faculty of Pharmacy, University of Porto, 4050-313 Porto, Portugal
| | - Maria Conceição B. S. M. Montenegro
- LAQV/REQUIMTE, Applied Chemistry Laboratory, Department of Chemical Sciences, Faculty of Pharmacy, University of Porto, 4050-313 Porto, Portugal
| |
Collapse
|
6
|
Ait Ichou A, Benhiti R, Abali M, Dabagh A, Carja G, Soudani A, Chiban M, Zerbet M, Sinan F. Characterization and sorption study of Zn2[FeAl]-CO3 layered double hydroxide for Cu(II) and Pb(II) removal. J SOLID STATE CHEM 2023. [DOI: 10.1016/j.jssc.2023.123869] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
|
7
|
Vuorte M, Kuitunen S, Van Tassel PR, Sammalkorpi M. Equilibrium state model for surfactants in oils: Colloidal assembly and adsorption. J Colloid Interface Sci 2023; 630:783-794. [DOI: 10.1016/j.jcis.2022.09.153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Revised: 09/29/2022] [Accepted: 09/30/2022] [Indexed: 11/11/2022]
|
8
|
Zhang X, Lin L, Chen Z, Zhang J, Wang X, Tao N. Characterization of refined fish oil from small fish in Mauritania. Aquaculture and Fisheries 2022. [DOI: 10.1016/j.aaf.2020.11.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
|
9
|
Bel Haj Mohamed N, Bouzidi M, Ouni S, Alshammari AS, Khan Z, Gandouzi M, Mohamed M, chaaben N, Bonilla-Petriciolet A, Haouari M. Statistical physics analysis of adsorption isotherms and photocatalysis activity of MPA coated CuInS2/ZnS nanocrystals for the removal of methyl blue from wastewaters. INORG CHEM COMMUN 2022. [DOI: 10.1016/j.inoche.2022.109933] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
|
10
|
Onchi A, Corona-García C, Santiago AA, Abatal M, Soto TE, Alfonso I, Vargas J. Synthesis and Characterization of Thiol-Functionalized Polynorbornene Dicarboximides for Heavy Metal Adsorption from Aqueous Solution. Polymers (Basel) 2022; 14:2344. [PMID: 35745918 DOI: 10.3390/polym14122344] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Revised: 05/30/2022] [Accepted: 06/07/2022] [Indexed: 11/16/2022] Open
Abstract
The contamination of water resources with heavy metals is a very serious concern that demands prompt and effective attention due to the serious health risks caused by these contaminants. The synthesis and ring-opening metathesis polymerization (ROMP) of norbornene dicarboximides bearing thiol pendant groups, specifically, N-4-thiophenyl-exo-norbornene-5,6-dicarboximide (1a), N-4-(methylthio)phenyl-exo-norbornene-5,6-dicarboximide (1b) and N-4-(trifluoromethylthio)phenyl-exo-norbornene-5,6-dicarboximide (1c), as well as their assessment for the removal of heavy metals from aqueous systems, is addressed in this work. The polymers were characterized by NMR, SEM and TGA, among others. Single and multicomponent aqueous solutions of Pb2+, Cd2+ and Ni2+ were employed to perform both kinetic and isothermal adsorption studies taking into account several experimental parameters, for instance, the initial metal concentration, the contact time and the mass of the polymer. In general, the adsorption kinetic data fit the pseudo-second-order model more efficiently, while the adsorption isotherms fit the Freundlich and Langmuir models. The maximum metal uptakes were 53.7 mg/g for Pb2+, 43.8 mg/g for Cd2+ and 29.1 mg/g for Ni2+ in the SH-bearing polymer 2a, 46.4 mg/g for Pb2+, 32.9 mg/g for Cd2+ and 27.1 mg/g for Ni2+ in the SCH3-bearing polymer 2b and 40.3 mg/g for Pb2+, 35.9 mg/g for Cd2+ and 27.8 mg/g for Ni2+ in the SCF3-bearing polymer 2c, correspondingly. The better performance of polymer 2a for the metal uptake was ascribed to the lower steric hindrance and higher hydrophilicity imparted by -SH groups to the polymer. The results show that these thiol-functionalized polymers are effective adsorbents of heavy metal ions from aqueous media.
Collapse
|
11
|
Cela-Dablanca R, Barreiro A, López LR, Santás-Miguel V, Arias-Estévez M, Núñez-Delgado A, Álvarez-Rodríguez E, Fernández-Sanjurjo MJ. Relevance of sorption in bio-reduction of amoxicillin taking place in forest and crop soils. Environ Res 2022; 208:112753. [PMID: 35074354 DOI: 10.1016/j.envres.2022.112753] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Revised: 01/07/2022] [Accepted: 01/14/2022] [Indexed: 06/14/2023]
Abstract
The fate of antibiotics reaching soils is a matter of concern, given its potential repercussions on public health and the environment. In this work, the potential bio-reduction of the antibiotic amoxicillin (AMX), affected by sorption and desorption, is studied for 17 soils with clearly different characteristics. To carry out these studies, batch-type tests were performed, adding increasing concentrations of AMX (0, 2.5, 5, 10, 20, 30, 40, and 50 μmol L-1) to the soils. For the highest concentration added (50 μmol L-1), the adsorption values for forest soils ranged from 90.97 to 102.54 μmol kg-1 (74.21-82.41% of the amounts of antibiotic added), while the range was 69.96-94.87 μmol kg-1 (68.31-92.56%) for maize soils, and 52.72-85.40 μmol kg-1 (50.96-82.55%) for vineyard soils. When comparing the results for all soils, the highest adsorption corresponded to those more acidic and with high organic matter and non-crystalline minerals contents. The best adjustment to adsorption models corresponded to Freundlich's. AMX desorption was generally <10%; specifically, the maximum was 6.5% in forest soils, and 16.9% in agricultural soils. These results can be considered relevant since they cover agricultural and forest soils with a wide range of pH and organic matter contents, for an antibiotic that, reaching the environment as a contaminant, can pose a potential danger to human and environmental health.
Collapse
Affiliation(s)
- Raquel Cela-Dablanca
- Department of Soil Science and Agricultural Chemistry, Engineering Polytechnic School, Univ. Santiago de Compostela, 27002, Lugo, Spain
| | - Ana Barreiro
- Department of Soil Science and Agricultural Chemistry, Engineering Polytechnic School, Univ. Santiago de Compostela, 27002, Lugo, Spain
| | - Lucia Rodríguez López
- Soil Science and Agricultural Chemistry, Fac. Sciences, Univ. Vigo, 32004, Ourense, Spain
| | - Vanesa Santás-Miguel
- Soil Science and Agricultural Chemistry, Fac. Sciences, Univ. Vigo, 32004, Ourense, Spain
| | - Manuel Arias-Estévez
- Soil Science and Agricultural Chemistry, Fac. Sciences, Univ. Vigo, 32004, Ourense, Spain
| | - Avelino Núñez-Delgado
- Department of Soil Science and Agricultural Chemistry, Engineering Polytechnic School, Univ. Santiago de Compostela, 27002, Lugo, Spain.
| | - Esperanza Álvarez-Rodríguez
- Department of Soil Science and Agricultural Chemistry, Engineering Polytechnic School, Univ. Santiago de Compostela, 27002, Lugo, Spain
| | - María J Fernández-Sanjurjo
- Department of Soil Science and Agricultural Chemistry, Engineering Polytechnic School, Univ. Santiago de Compostela, 27002, Lugo, Spain
| |
Collapse
|
12
|
Silliková V, Jakubčinová J, Horník M, Gomola I, Dulanská S. Determination of caesium-137 in water samples using modified carbon microfibers. J Radioanal Nucl Chem 2022. [DOI: 10.1007/s10967-022-08212-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
13
|
Adamovich SN, Filatova EG, Pozhidaev YN, Ushakov IA, Chugunov AD, Oborina EN, Rozentsveig IB, Verpoort F. Natural zeolite modified with 4-(3-triethoxysilylpropyl) thiosemicarbazide as an effective adsorbent for Cu(II), Co(II) and Ni(II). J Taiwan Inst Chem Eng 2021. [DOI: 10.1016/j.jtice.2021.09.014] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
|
14
|
Naseri K, Allahverdi A. Methylene blue adsorption by TiO2-based nano-adsorbents: performance evaluation and kinetic study. Res Chem Intermed 2019. [DOI: 10.1007/s11164-019-03866-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
15
|
Affiliation(s)
- Sheng-Zhi Lv
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, China
- Engineering Research Center of Bioconversion and Biopurification of Ministry of Education, Zhejiang University of Technology, Hangzhou, China
| | - Yu-Xing Guo
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, China
- Engineering Research Center of Bioconversion and Biopurification of Ministry of Education, Zhejiang University of Technology, Hangzhou, China
| | - Ya-Ping Xue
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, China
- Engineering Research Center of Bioconversion and Biopurification of Ministry of Education, Zhejiang University of Technology, Hangzhou, China
| | - Jian-Miao Xu
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, China
- Engineering Research Center of Bioconversion and Biopurification of Ministry of Education, Zhejiang University of Technology, Hangzhou, China
| | - Yu-Guo Zheng
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, China
- Engineering Research Center of Bioconversion and Biopurification of Ministry of Education, Zhejiang University of Technology, Hangzhou, China
| |
Collapse
|
16
|
Vinhal JO, Nege KK, Lage MR, de M Carneiro JW, Lima CF, Cassella RJ. Adsorption of the herbicides diquat and difenzoquat on polyurethane foam: Kinetic, equilibrium and computational studies. Ecotoxicol Environ Saf 2017; 145:597-604. [PMID: 28802141 DOI: 10.1016/j.ecoenv.2017.08.005] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2017] [Revised: 08/01/2017] [Accepted: 08/02/2017] [Indexed: 06/07/2023]
Abstract
This work reports a study about the adsorption of the herbicides diquat and difenzoquat from aqueous medium employing polyurethane foam (PUF) as the adsorbent and sodium dodecylsulfate (SDS) as the counter ion. The adsorption efficiency was shown to be dependent on the concentration of SDS in solution, since the formation of an ion-associate between cationic herbicides (diquat and difenzoquat) and anionic dodecylsulfate is a fundamental step of the process. A computational study was carried out to identify the possible structure of the ion-associates that are formed in solution. They are probably formed by three units of dodecylsulfate bound to one unit of diquat, and two units of dodecylsulfate bound to one unit of difenzoquat. The results obtained also showed that 95% of both herbicides present in 45mL of a solution containing 5.5mgL-1 could be retained by 300mg of PUF. The experimental data were well adjusted to the Freundlich isotherm (r2 ≥ 0.95) and to the pseudo-second-order kinetic equation. Also, the application of Morris-Weber and Reichenberg equations indicated that an intraparticle diffusion process is active in the control of adsorption kinetics.
Collapse
Affiliation(s)
- Jonas O Vinhal
- Instituto de Química, Programa de Pós-Graduação em Química, Universidade Federal Fluminense, Outeiro de São João Batista s/n, Centro, Niterói, RJ 24020-141, Brazil; Departamento de Química, Universidade Federal de Viçosa, Viçosa, MG 36570-000, Brazil
| | - Kassem K Nege
- Instituto de Química, Programa de Pós-Graduação em Química, Universidade Federal Fluminense, Outeiro de São João Batista s/n, Centro, Niterói, RJ 24020-141, Brazil
| | - Mateus R Lage
- Instituto de Química, Programa de Pós-Graduação em Química, Universidade Federal Fluminense, Outeiro de São João Batista s/n, Centro, Niterói, RJ 24020-141, Brazil
| | - José Walkimar de M Carneiro
- Instituto de Química, Programa de Pós-Graduação em Química, Universidade Federal Fluminense, Outeiro de São João Batista s/n, Centro, Niterói, RJ 24020-141, Brazil
| | - Claudio F Lima
- Departamento de Química, Universidade Federal de Viçosa, Viçosa, MG 36570-000, Brazil
| | - Ricardo J Cassella
- Instituto de Química, Programa de Pós-Graduação em Química, Universidade Federal Fluminense, Outeiro de São João Batista s/n, Centro, Niterói, RJ 24020-141, Brazil.
| |
Collapse
|
17
|
Gupta NK, Sengupta A, Rane VG, Kadam RM. Amide-mediated enhancement of sorption efficiency of trivalent f-elements on functionalized carbon nanotube: Evidence of physisorption. SEP SCI TECHNOL 2017. [DOI: 10.1080/01496395.2017.1322982] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Nishesh K. Gupta
- Department of Chemistry, National Institute of Technology, Rourkela, Odisha, India
| | - Arijit Sengupta
- Radiochemistry Division, Bhabha Atomic Research Centre, Mumbai, India
| | - Vinayak G. Rane
- Radiochemistry Division, Bhabha Atomic Research Centre, Mumbai, India
| | - R. M. Kadam
- Radiochemistry Division, Bhabha Atomic Research Centre, Mumbai, India
| |
Collapse
|
18
|
Kumar P, Sengupta A, Singha Deb AK, Dasgupta K, Ali SM. Understanding the sorption behavior of Pu4+ on poly(amidoamine) dendrimer functionalized carbon nanotube: sorption equilibrium, mechanism, kinetics, radiolytic stability, and back-extraction studies. RADIOCHIM ACTA 2017. [DOI: 10.1515/ract-2016-2722] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Poly(amidoamine) dendrimer functionalized carbon nanotube was demonstrated as highly efficient sorbent of the Pu4+ from radioactive waste solution. The second generation dendrimer was found to have more efficiency as compared to the 1st generation might be due to the availability of more functionality for coordinating to the Pu4+ ion. Analysis of different isotherm models revealed that, Langmuir isotherm was predominantly operating through chemi-sorption (with the sorption energy 10.07 and 16.95 kJ mol−1 for 1st and 2nd generation dendrimer) with the sorption capacity 89.22 mg g−1 and 92.48 mg g−1 for 1st and 2nd generation dendrimer, respectively. Analysis of different sorption kinetics model revealed that the sorption proceeded via pseudo 2nd order reaction. The 2nd generation dendrimer was found to be radiolytically more stable while oxalic acid was found to be suitable for quantitative back extraction of Pu4+.
Collapse
Affiliation(s)
- Parveen Kumar
- Indian Institute of Technology , Mandi , Himachal Pradesh, India
| | - Arijit Sengupta
- Radiochemistry Division, Bahbha Atomic Research Centre , Mumbai , India
| | - Ashish Kumar Singha Deb
- Chemical Engineering Division, Bahbha Atomic Research Centre , Mumbai , India
- Homi Bhabha National Institute , Mumbai , India
| | - Kinshuk Dasgupta
- Mechanical Metallurgy Division, Bahbha Atomic Research Centre , Mumbai , India
| | - Sk. Musharaf Ali
- Chemical Engineering Division, Bahbha Atomic Research Centre , Mumbai , India
- Homi Bhabha National Institute , Mumbai , India
| |
Collapse
|
19
|
Affiliation(s)
- Josep Serra Bonvehi
- Research & Development Department; Mielso, S.A., Pol. Industrial 'El Mijares', C/. Industria 1 12550 Almassora (Castelló) Spain
| | | |
Collapse
|
20
|
Sinichi S, Boocock DGB, Diosady LL. Production of Isopropyl and Methyl Esters from Yellow Mustard Oil/IPA Miscellas. J AM OIL CHEM SOC 2017; 94:485-95. [DOI: 10.1007/s11746-016-2942-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
21
|
Sengupta A, Kumar Singha Deb A, Dasgupta K, Adya VC, Ali SM. Diglycolamic acid-functionalized multiwalled carbon nanotubes as a highly efficient sorbent for f-block elements: experimental and theoretical investigations. NEW J CHEM 2017. [DOI: 10.1039/c6nj03902b] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Diglycolamic acid-functionalized carbon nanotubes were employed for the efficient and selective separation of Pu4+, PuO22+ and Am3+.
Collapse
Affiliation(s)
- Arijit Sengupta
- Radiochemistry Division
- Bahbha Atomic Research Centre
- Mumbai
- India
| | | | - Kinshuk Dasgupta
- Mechanical Metallurgy Division
- Bahbha Atomic Research Centre
- Mumbai
- India
| | - V. C. Adya
- Radiochemistry Division
- Bahbha Atomic Research Centre
- Mumbai
- India
| | - Sk. Musharaf Ali
- Chemical Engineering Division
- Bahbha Atomic Research Centre
- Mumbai
- India
| |
Collapse
|
22
|
Sengupta A, Sk. J, Boda A, Ali SM. An amide functionalized task specific carbon nanotube for the sorption of tetra and hexa valent actinides: experimental and theoretical insight. RSC Adv 2016. [DOI: 10.1039/c6ra07986e] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
An amide functionalized multiwalled carbon nanotube (CNT-DHA) was used for efficient and selective solid phase separation of tetravalent (Th4+) and hexavalent (UO22+) actinides.
Collapse
Affiliation(s)
- Arijit Sengupta
- Radiochemistry Division
- Bhabha Atomic Research Centre
- Mumbai
- India
| | - Jayabun Sk.
- Radiochemistry Division
- Bhabha Atomic Research Centre
- Mumbai
- India
| | - Anil Boda
- Chemical Engineering Division
- Bhabha Atomic Research Centre
- Mumbai
- India
| | - Sk. Musharaf Ali
- Chemical Engineering Division
- Bhabha Atomic Research Centre
- Mumbai
- India
| |
Collapse
|
23
|
Tabtabaei S, Boocock DGB, Diosady LL. Biodiesel Production from Mustard Emulsion by a Combined Destabilization/Adsorption Process. J AM OIL CHEM SOC 2015; 92:1205-17. [DOI: 10.1007/s11746-015-2677-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
24
|
Vinhal JO, Lage MR, Carneiro JWM, Lima CF, Cassella RJ. Modeling, kinetic, and equilibrium characterization of paraquat adsorption onto polyurethane foam using the ion-pairing technique. J Environ Manage 2015; 156:200-208. [PMID: 25846000 DOI: 10.1016/j.jenvman.2015.03.022] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2014] [Revised: 03/02/2015] [Accepted: 03/13/2015] [Indexed: 06/04/2023]
Abstract
We studied the adsorption of paraquat onto polyurethane foam (PUF) when it was in a medium containing sodium dodecylsulfate (SDS). The adsorption efficiency was dependent on the concentration of SDS in solution, because the formation of an ion-associate between the cationic paraquat and the dodecylsulfate anion was found to be a fundamental step in the process. A computational study was carried out to identify the possible structure of the ion-associate in aqueous medium. The obtained data demonstrated that the structure is probably formed from four units of dodecylsulfate bonded to one paraquat moiety. The results showed that 94% of the paraquat present in 45 mL of a solution containing 3.90 × 10(-5) mol L(-1) could be retained by 300 mg of PUF, resulting in the removal of 2.20 mg of paraquat. The experimental data were reasonably adjusted to the Freundlich isotherm and to the pseudo-second-order kinetic model. Also, the application of Morris-Weber and Reichenberg models indicated that both film-diffusion and intraparticle-diffusion processes were active during the control of the adsorption kinetics.
Collapse
Affiliation(s)
- Jonas O Vinhal
- Instituto de Química, Programa de Pós Graduação em Química, Universidade Federal Fluminense, Outeiro de São João Batista s/n, Centro, Niterói, RJ 24020-141, Brazil; Departamento de Química, Universidade Federal de Viçosa, Viçosa, MG 36570-000, Brazil
| | - Mateus R Lage
- Instituto de Química, Programa de Pós Graduação em Química, Universidade Federal Fluminense, Outeiro de São João Batista s/n, Centro, Niterói, RJ 24020-141, Brazil
| | - José Walkimar M Carneiro
- Instituto de Química, Programa de Pós Graduação em Química, Universidade Federal Fluminense, Outeiro de São João Batista s/n, Centro, Niterói, RJ 24020-141, Brazil
| | - Claudio F Lima
- Departamento de Química, Universidade Federal de Viçosa, Viçosa, MG 36570-000, Brazil
| | - Ricardo J Cassella
- Instituto de Química, Programa de Pós Graduação em Química, Universidade Federal Fluminense, Outeiro de São João Batista s/n, Centro, Niterói, RJ 24020-141, Brazil.
| |
Collapse
|
25
|
Affiliation(s)
- Mohammad Marufuzzaman
- Industrial & Systems Engineering; Mississippi State University; Starkville Mississippi 39762 USA
| | - Amr Henni
- Petroleum Technology Research Center, Faculty of Engineering and Applied Science; University of Regina; Regina Saskatchewan S4S 0A2 Canada
| |
Collapse
|
26
|
Jing L, Shi YE, Cui J, Zhang X, Zhan J. Hydrophobic gold nanostructures via electrochemical deposition for sensitive SERS detection of persistent toxic substances. RSC Adv 2015. [DOI: 10.1039/c4ra14089c] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The hydrophobic gold nanostructures were used for direct SERS detection of PTS with high sensitivity.
Collapse
Affiliation(s)
- Lixiao Jing
- Key Laboratory for Colloid & Interface Chemistry of Education Ministry
- Department of Chemistry
- Shandong University
- Jinan
- P. R. China
| | - Yu-e Shi
- Key Laboratory for Colloid & Interface Chemistry of Education Ministry
- Department of Chemistry
- Shandong University
- Jinan
- P. R. China
| | - Jingcheng Cui
- Key Laboratory for Colloid & Interface Chemistry of Education Ministry
- Department of Chemistry
- Shandong University
- Jinan
- P. R. China
| | - Xiaoli Zhang
- Key Laboratory for Colloid & Interface Chemistry of Education Ministry
- Department of Chemistry
- Shandong University
- Jinan
- P. R. China
| | - Jinhua Zhan
- Key Laboratory for Colloid & Interface Chemistry of Education Ministry
- Department of Chemistry
- Shandong University
- Jinan
- P. R. China
| |
Collapse
|
27
|
|
28
|
Warren FJ, Butterworth PJ, Ellis PR. The surface structure of a complex substrate revealed by enzyme kinetics and Freundlich constants for α-amylase interaction with the surface of starch. Biochim Biophys Acta Gen Subj 2013; 1830:3095-101. [DOI: 10.1016/j.bbagen.2012.12.028] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2012] [Revised: 11/21/2012] [Accepted: 12/21/2012] [Indexed: 01/10/2023]
|
29
|
|
30
|
Matharu Z, Bandodkar AJ, Sumana G, Solanki PR, Ekanayake EMIM, Kaneto K, Gupta V, Malhotra BD. Low Density Lipoprotein Detection Based on Antibody Immobilized Self-Assembled Monolayer: Investigations of Kinetic and Thermodynamic Properties. J Phys Chem B 2009; 113:14405-12. [DOI: 10.1021/jp903661r] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Zimple Matharu
- Department of Science and Technology Centre on Biomolecular Electronics, National Physical Laboratory, Dr. K. S. Krishnan Marg, New Delhi-110012, India, Department of Applied Chemistry, Institute of Technology, Banaras Hindu University, Varanasi- 221005, India, Graduate School of Life Science and Systems Engineering, Kyushu Institute of Technology Kitakyushu, 808-0196, Japan, Department of Physics and Astrophysics, University of Delhi, Delhi-110007, India, and Centre for NanoBioEngineering and
| | - Amay Jairaj Bandodkar
- Department of Science and Technology Centre on Biomolecular Electronics, National Physical Laboratory, Dr. K. S. Krishnan Marg, New Delhi-110012, India, Department of Applied Chemistry, Institute of Technology, Banaras Hindu University, Varanasi- 221005, India, Graduate School of Life Science and Systems Engineering, Kyushu Institute of Technology Kitakyushu, 808-0196, Japan, Department of Physics and Astrophysics, University of Delhi, Delhi-110007, India, and Centre for NanoBioEngineering and
| | - G. Sumana
- Department of Science and Technology Centre on Biomolecular Electronics, National Physical Laboratory, Dr. K. S. Krishnan Marg, New Delhi-110012, India, Department of Applied Chemistry, Institute of Technology, Banaras Hindu University, Varanasi- 221005, India, Graduate School of Life Science and Systems Engineering, Kyushu Institute of Technology Kitakyushu, 808-0196, Japan, Department of Physics and Astrophysics, University of Delhi, Delhi-110007, India, and Centre for NanoBioEngineering and
| | - Pratima R. Solanki
- Department of Science and Technology Centre on Biomolecular Electronics, National Physical Laboratory, Dr. K. S. Krishnan Marg, New Delhi-110012, India, Department of Applied Chemistry, Institute of Technology, Banaras Hindu University, Varanasi- 221005, India, Graduate School of Life Science and Systems Engineering, Kyushu Institute of Technology Kitakyushu, 808-0196, Japan, Department of Physics and Astrophysics, University of Delhi, Delhi-110007, India, and Centre for NanoBioEngineering and
| | - E. M. I. Mala Ekanayake
- Department of Science and Technology Centre on Biomolecular Electronics, National Physical Laboratory, Dr. K. S. Krishnan Marg, New Delhi-110012, India, Department of Applied Chemistry, Institute of Technology, Banaras Hindu University, Varanasi- 221005, India, Graduate School of Life Science and Systems Engineering, Kyushu Institute of Technology Kitakyushu, 808-0196, Japan, Department of Physics and Astrophysics, University of Delhi, Delhi-110007, India, and Centre for NanoBioEngineering and
| | - Keiichi Kaneto
- Department of Science and Technology Centre on Biomolecular Electronics, National Physical Laboratory, Dr. K. S. Krishnan Marg, New Delhi-110012, India, Department of Applied Chemistry, Institute of Technology, Banaras Hindu University, Varanasi- 221005, India, Graduate School of Life Science and Systems Engineering, Kyushu Institute of Technology Kitakyushu, 808-0196, Japan, Department of Physics and Astrophysics, University of Delhi, Delhi-110007, India, and Centre for NanoBioEngineering and
| | - Vinay Gupta
- Department of Science and Technology Centre on Biomolecular Electronics, National Physical Laboratory, Dr. K. S. Krishnan Marg, New Delhi-110012, India, Department of Applied Chemistry, Institute of Technology, Banaras Hindu University, Varanasi- 221005, India, Graduate School of Life Science and Systems Engineering, Kyushu Institute of Technology Kitakyushu, 808-0196, Japan, Department of Physics and Astrophysics, University of Delhi, Delhi-110007, India, and Centre for NanoBioEngineering and
| | - B. D. Malhotra
- Department of Science and Technology Centre on Biomolecular Electronics, National Physical Laboratory, Dr. K. S. Krishnan Marg, New Delhi-110012, India, Department of Applied Chemistry, Institute of Technology, Banaras Hindu University, Varanasi- 221005, India, Graduate School of Life Science and Systems Engineering, Kyushu Institute of Technology Kitakyushu, 808-0196, Japan, Department of Physics and Astrophysics, University of Delhi, Delhi-110007, India, and Centre for NanoBioEngineering and
| |
Collapse
|
31
|
Baldez EE, Robaina NF, Cassella RJ. Study of Rhodamine B Retention by Polyurethane Foam from Aqueous Medium in Presence of Sodium Dodecylsulfate. SEP SCI TECHNOL 2009. [DOI: 10.1080/01496390903182396] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
32
|
Baldez EE, Robaina NF, Cassella RJ. Employment of polyurethane foam for the adsorption of Methylene Blue in aqueous medium. J Hazard Mater 2008; 159:580-586. [PMID: 18395335 DOI: 10.1016/j.jhazmat.2008.02.055] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2008] [Revised: 02/08/2008] [Accepted: 02/19/2008] [Indexed: 05/26/2023]
Abstract
This work presents a detailed study about the adsorption of Methylene Blue (MB) onto polyether type polyurethane foam (PUF). The adsorption process is based on the formation of a hydrophobic ionic-pair between cationic dye MB and dodecylsulfate anion (SDS), which present high affinity by PUF. Set-up employed in the study was built up by adjusting a 200mg cylinder of PUF to the arm of an overhead stirrer. The system was characterized in relation to equilibrium, kinetic and thermodynamic aspects and it was modeled by employing Langmuir and Freundlich isotherms. Obtained results showed that the ratio between SDS and MB concentrations plays an important role on the adsorption process. According to Langmuir isotherm, a maximum adsorption capacity of 7.20 x 10(-5) mol MBg(-1) was achieved when optimized operational conditions were employed. The adsorption rate seems to be regulated by an intraparticle diffusion mechanism. Adsorption process was spontaneous (negative DeltaG) at ambient temperature and presented an endothermic characteristic (positive DeltaH). Sequential extraction experiments were carried out by changing PUF plugs in 30 min time intervals and around 96% of the MB present in solution could be removed through consecutive extractions with six 200 mg PUF cylinders.
Collapse
Affiliation(s)
- Eliene E Baldez
- Departamento de Química Analítica, Universidade Federal Fluminense, Outeiro de São João Batista s/n, Niterói/RJ 24020-150, Brazil
| | | | | |
Collapse
|
33
|
|
34
|
Karabulut I, Topcu A, Akmil-Basar C, Onal Y, Lampi AM. Obtaining Butter Oil Triacylglycerols Free from β-Carotene and α-Tocopherol via Activated Carbon Adsorption and Alumina-Column Chromatography Treatments. J AM OIL CHEM SOC 2007. [DOI: 10.1007/s11746-007-1177-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
35
|
de Almeida GN, de Sousa LM, Pereira Netto AD, Cassella RJ. Characterization of solid-phase extraction of Fe(III) by unloaded polyurethane foam as thiocyanate complex. J Colloid Interface Sci 2007; 315:63-9. [PMID: 17662992 DOI: 10.1016/j.jcis.2007.06.039] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2007] [Revised: 05/23/2007] [Accepted: 06/19/2007] [Indexed: 11/23/2022]
Abstract
This work presents a detailed study about the adsorption of iron(III)-thiocyanate complexes onto unloaded polyether-type polyurethane foam (PUF). A novel strategy was employed for this purpose, utilizing the adjustment of the plug cylinder of PUF to the arm of an overhead stirrer. The system was characterized in relation to equilibrium and kinetic aspects and it was modeled by applying Langmuir and Freundlich isotherms. The results obtained showed that adsorption occurs on a monolayer and that external transport of the solute from solution to adsorbent was the rate-determining mechanism. A maximum adsorption capacity of 2.06 x 10(-4) mol Fe g(-1) was obtained under established experimental conditions (0.5 mol L(-1) SCN(-) and 0.005 mol L(-1) HCl). Sequential extraction experiments were carried out by changing PUF in time intervals previously defined (5, 20, and 40 min), and the obtained results showed that it is possible to remove around 95% of the Fe(III) in solution through five consecutive extractions of 5 min with five 200 mg PUF cylinders.
Collapse
Affiliation(s)
- Gil Nunes de Almeida
- Departamento de Química Analítica, Universidade Federal Fluminense, Outeiro de São João Batista s/n, Niterói 24020-150, RJ, Brazil
| | | | | | | |
Collapse
|
36
|
|
37
|
|
38
|
Chu B, Baharin B, Che Man Y, Quek S. Separation of vitamin E from palm fatty acid distillate using silica: I Equilibrium of batch adsorption. J FOOD ENG 2004; 62:97-103. [DOI: 10.1016/s0260-8774(03)00196-1] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|