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Xu L, Wen L, Zhao X, Li N, Liu B. Commonly Existing Hole-Capturer Organics Adsorption-Induced Recombination over Metal/Semiconductor Perimeters: A Possible Important Factor Affecting Photocatalytic Efficiencies. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:11974-11987. [PMID: 38801162 DOI: 10.1021/acs.langmuir.4c00462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2024]
Abstract
Photocatalysis is a physiochemical effect arising from the relaxation of photoinduced electrons from the conduction band to the valence band. Controlling the electron relaxation to occur through photocatalytic pathways and prohibiting other relaxations is the main scientific thought for photocatalytic studies. It is needed to know the parallel relaxation pathways that can compete with photocatalytic reactions. By means of in situ photoconductances (PCs) and photoinduced absorptions (PAs), the current research studied the photoinduced electron relaxations of the Au/TiO2 in different atmospheres and at different temperatures. The PC and PA relaxations became different and fast when methanol, ethanol, isopropanol, and acetone were introduced; they also tend to decrease as temperature increases, while that of the undecorated TiO2 in all atmospheres and the Au/TiO2 in pure N2 increased. The results indicated that the organic adsorptions over the Au/TO2 perimeters change the relaxation pathway, and a hole-capturing organics adsorption-induced recombination over the Au/TiO2 perimeter was proposed to explain the relaxations. We found that this relaxation also exists for Ag/TiO2, Pt/TiO2, and Au/ZnO, so it is a commonly existing physical course for the metal/semiconductor (M/S) materials. The effect of the organics and M/S structures on the relaxation was discussed, and the relationship with photocatalytic reactions was also analyzed. Our finding means that blocking this relaxation pathway is an effective way to increase photocatalytic activities, which might open a door for highly active photocatalyst developments.
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Affiliation(s)
- Li Xu
- State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan City, Hubei Province 430065, P. R. China
| | - Liping Wen
- School of Environmental & Biological Engineering, Wuhan Technology and Business University, Wuhan City, Hubei province 430065, P. R. China
| | - Xiujian Zhao
- State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan City, Hubei Province 430065, P. R. China
| | - Neng Li
- State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan City, Hubei Province 430065, P. R. China
| | - Baoshun Liu
- State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan City, Hubei Province 430065, P. R. China
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2
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Dai X, Xue P, Bian L. Molecular recognition and interaction between human plasminogen Kringle 5 and A2M domain in human complement C5 by biospecific methods coupled with molecular dynamics simulation. Int J Biol Macromol 2024; 270:132356. [PMID: 38754659 DOI: 10.1016/j.ijbiomac.2024.132356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2024] [Revised: 05/10/2024] [Accepted: 05/11/2024] [Indexed: 05/18/2024]
Abstract
The potent angiogenesis inhibitor known as human plasminogen Kringle 5 has shown promise in the treatment of vascular disorders and malignancies. The study aimed to investigate the recognition and interaction between Kringle 5 and the A2M domain of human complement component C5 using bio-specific methodologies and molecular dynamics (MD) simulation. Initially, the specific interaction between Kringle 5 and A2M was confirmed and characterized through Ligand Blot and ELISA, yielding the dissociation constant (Kd) of 1.70 × 10-7 mol/L. Then, Kringle 5 showcased a dose-dependent inhibition of the production of C5a in lung cancer A549 cells, consequently impeding their proliferation and migration. Following the utilization of frontal affinity chromatography (FAC), it was revealed that there exists a singular binding site with the binding constant (Ka) of 3.79 × 105 L/mol. Following the implementation of homology modeling and MD optimization, the detailed results indicate that only a specific segment of the N-terminal structure of the A2M molecule engages in interaction with Kringle 5 throughout the binding process and the principal driving forces encompass electrostatic force, hydrogen bonding, and van der Waals force. In conclusion, the A2M domain of human complement C5 emerges as a plausible binding target for Kringle 5 in vivo.
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Affiliation(s)
- Xufen Dai
- College of Life Science, Northwest University, Xi'an 710069, China
| | - Pengli Xue
- College of Life Science, Northwest University, Xi'an 710069, China
| | - Liujiao Bian
- College of Life Science, Northwest University, Xi'an 710069, China.
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3
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Núñez-Gómez D, Martínez-Nicolás JJ, Legua P, Giménez-Valero C, Maciá-Vázquez AA, Melgarejo P. Comparative Evaluation of Boron Sorption Dynamics on Zeolites in Irrigation Waters: An Isothermal Modeling Approach. Molecules 2024; 29:2545. [PMID: 38893421 PMCID: PMC11173699 DOI: 10.3390/molecules29112545] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2024] [Revised: 05/20/2024] [Accepted: 05/26/2024] [Indexed: 06/21/2024] Open
Abstract
Efficient boron removal from irrigation waters is crucial for sustainable agriculture, as elevated levels of boron can be toxic to many plants, limiting growth and crop productivity. In this context, the present study investigated the sorption equilibrium of boron using zeolites in two types of aqueous matrices: a synthetic solution containing only boron and natural irrigation waters. Through the application of various isothermal sorption models (Langmuir, Freundlich, Sips, Toth, Jovanovic, Temkin, Dubinin-Radushkevich, and Redlich-Peterson), the efficacy of zeolite for boron removal under controlled and real conditions was evaluated. The results indicated a notable difference in sorption behavior between the two matrices, reflecting the complexity and heterogeneity of interactions in the boron-zeolite system. In the synthetic solution, the Freundlich model provided the best fit (R2 = 0.9917), suggesting heterogeneous and multilayer sorption, while the Sips model showed high efficacy in describing the sorption in both matrices, evidencing its capability to capture the complex nature of the interaction between boron and zeolite under different environmental conditions. However, in natural irrigation waters, the Jovanovic model demonstrated the most accurate fit (R2 = 0.999), highlighting the importance of physical interactions in boron sorption. These findings underscore the significant influence of the water matrix on the efficacy of zeolite as a boron removal agent, emphasizing the need to consider the specific composition of irrigation water in the design of removal treatments. Additionally, the results stress the importance of selecting the appropriate isothermal model to predict boron sorption behavior, which is crucial for developing effective and sustainable treatment strategies. This study provides a basis for optimizing boron removal in various agricultural and industrial applications, contributing to the design of more efficient and specific water treatment processes.
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Affiliation(s)
| | | | - Pilar Legua
- Plant Production and Microbiology Department, Miguel Hernandez University (UMH), Ctra. Beniel Km 3.2, 03312 Orihuela, Alicante, Spain; (D.N.-G.)
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Shaha C, Sarker B, Mahalanobish SK, Hossain MS, Karmaker S, Saha TK. Kinetics, Equilibrium, and Thermodynamics for Conjugation of Chitosan with Insulin-Mimetic [ meso-Tetrakis(4-sulfonatophenyl)porphyrinato]oxovanadate(IV)(4-) in an Aqueous Solution. ACS OMEGA 2023; 8:41612-41623. [PMID: 37970023 PMCID: PMC10634234 DOI: 10.1021/acsomega.3c05804] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Revised: 10/07/2023] [Accepted: 10/11/2023] [Indexed: 11/17/2023]
Abstract
This study investigated the conjugation of chitosan with the insulin-mimetic [meso-tetrakis(4-sulfonatophenyl)porphyrinato]oxovanadate(IV)(4-), VO(tpps), in an aqueous medium as a function of conjugation time, VO(tpps) concentrations, and temperatures. To validate the synthesis of chitosan-VO(tpps) conjugate, UV-visible and Fourier transform infrared spectrophotometric techniques were utilized. Conjugate formation is ascribed to the electrostatic interaction between the NH3+ units of chitosan and the SO3- units of VO(tpps). Chitosan enhances the stability of VO(tpps) in an aqueous medium (pH 2.5). VO(tpps) conjugation with chitosan was best explained by pseudo-second-order kinetic and Langmuir isotherm models based on kinetic and isotherm studies. The Langmuir equation determined that the maximal ability of VO(tpps) conjugated with each gram of chitosan was 39.22 μmol at a solution temperature of 45 °C. Activation energy and thermodynamic studies (Ea: 8.78 kJ/mol, ΔG: -24.52 to -27.55 kJ/mol, ΔS: 204.22 J/(mol K), and ΔH: 37.30 kJ/mol) reveal that conjugation is endothermic and physical in nature. The discharge of VO(tpps) from conjugate was analyzed in freshly prepared 0.1 mol/L phosphate buffer (pH 7.4) at 37 °C. The release of VO(tpps) from the conjugate is a two-phase process best explained by the Higuchi model, according to a kinetic analysis of the release data. Taking into consideration all experimental findings, it is proposed that chitosan can be used to formulate both solid and liquid insulin-mimetic chitosan-VO(tpps) conjugates.
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Affiliation(s)
- Chironjit
Kumar Shaha
- Department
of Chemistry, Jahangirnagar University, Savar, Dhaka 1342, Bangladesh
- Veterinary
Drug Residue Analysis Division, Institute
of Food and Radiation Biology, Atomic Energy Research Establishment
(AERE), Gonokbari, Savar, Dhaka 1349, Bangladesh
| | - Bithy Sarker
- Department
of Chemistry, Jahangirnagar University, Savar, Dhaka 1342, Bangladesh
| | | | - Md. Sharif Hossain
- Department
of Biotechnology & Genetic Engineering, Jahangirnagar University, Savar, Dhaka 1342, Bangladesh
| | - Subarna Karmaker
- Department
of Chemistry, Jahangirnagar University, Savar, Dhaka 1342, Bangladesh
| | - Tapan Kumar Saha
- Department
of Chemistry, Jahangirnagar University, Savar, Dhaka 1342, Bangladesh
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Jin X, Fu J, Yu P, Luo D. Characterization and properties of manganese oxide film coated clinoptilolite as filter material in fixed-bed columns for removal of Mn(II) from aqueous solution. Sci Rep 2023; 13:17440. [PMID: 37838822 PMCID: PMC10576753 DOI: 10.1038/s41598-023-44611-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2023] [Accepted: 10/10/2023] [Indexed: 10/16/2023] Open
Abstract
A new filter material, manganese oxide film coated clinoptilolite (MOFCC), was characterized and introduced to explore the effect in treating high concentration of manganese (1.71-2.12 mg L-1) from aqueous solution in fixed-bed column. Adsorption behavior of Mn(II) can be approximately described with the Langmuir isotherm. During the continuous 30 days filtration experiment, the removal rate of Mn(II) has maintained to be above 95.51%, the accumulated removal amount (806.42 mg) is much higher than the theoretical adsorption capacity (89.71 mg), which indicated that the removal of manganese by MOFCC includes both adsorption and auto-catalytic oxidation process, and it does not require a start-up period. SEM, EDS, XPS, XRD, ZETA potential and BET analyses were used to observe the surface properties of MOFCC. The manganese oxide film of MOFCC exhibits in clusters, apparently on occupied surface, the main component of the manganese oxide film is (Na0.7Ca0.3)Mn7O14·2.8H2O, the specific surface area of MOFCC is 38.76 m2 g-1, and the pore size is concentrated in the range of 3-40 nm, within the mesoporous range mesopores. pHpzc (point of zero charge) value is about 2.36. The characteristics of MOFCC make it an excellent manganese removal filter material for water treatment plant. Therefore, there is a long-term practical significance to develop new system for deep removal of manganese based on MOFCC.
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Affiliation(s)
- Xing Jin
- School of Municipal and Environmental Engineering, Shenyang Jianzhu University, Shenyang, 110000, China
| | - Jinxiang Fu
- School of Municipal and Environmental Engineering, Shenyang Jianzhu University, Shenyang, 110000, China
| | - Pengfei Yu
- School of Municipal and Environmental Engineering, Shenyang Jianzhu University, Shenyang, 110000, China.
| | - Di Luo
- School of Municipal and Environmental Engineering, Shenyang Jianzhu University, Shenyang, 110000, China
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Asaithambi K, Syed Abdul Rahman S, Pasupathi S, Sabarathinam C, Karuppiah S, Mathivanan M, Vedhachalam R. Enhancement of biosorption capability of imidazolium-based ionic liquid-treated Prosopis juliflora for the removal of malachite green from wastewater. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2023; 26:740-753. [PMID: 37791403 DOI: 10.1080/15226514.2023.2262603] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/05/2023]
Abstract
Due to its toxicity effect, treating toxic pollutants discharged from textile effluent is challenging for living beings. In the present study, the comparative biosorption potential of imidazolium-based ionic liquid-treated Prosopis juliflora (ILPJS) and untreated P. juliflora (PJS) was investigated for the removal of toxic pollutant, malachite green (MG) from aqueous solution. The textural, surface morphology, and functional analysis of ILPJS and PJS were examined using BET (Brunauer-Emmett-Teller) analysis, SEM (Scanning electron microscopy) analysis, and FTIR (Fourier-transform infrared spectroscopy) analysis. Textural property (BET surface area) and surface morphology containing irregular heterogeneous surface for ILPJS were significantly improved than PJS, thereby facilitating significant biosorption of MG. Based on the conventional optimization studies, the essential biosorption parameters for the removal of MG using ILPJS were found to be: initial pH (9.0), contact time (30 min), and biosorbent dosage (0.2 g). The maximum biosorption capacity of PJS and ILPJS were obtained to be 6.91 and 13.64 mg/g at 40 °C, respectively. The spontaneous and endothermic biosorption of MG was confirmed by thermodynamic analysis. The regeneration study indicated the greater reusability of ILPJS and PJS for MG removal till the fifth cycle. Based on the previous literature, this is the first report comparing the removal of toxic pollutant MG using ILPJS and PJS.
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Affiliation(s)
- Karthikeyan Asaithambi
- School of Civil Engineering, Centre for Bioenergy, SASTRA Deemed to be University, Thanjavur, India
| | - Sameeha Syed Abdul Rahman
- Bioprocess Engineering Laboratory, School of Chemical and Biotechnology, Centre for Bioenergy, SASTRA Deemed to be University, Thanjavur, India
| | - Saroja Pasupathi
- Bioprocess Engineering Laboratory, School of Chemical and Biotechnology, Centre for Bioenergy, SASTRA Deemed to be University, Thanjavur, India
| | - Chidambaram Sabarathinam
- Water Resources Development and Program, Water Research Center, Kuwait Institute for Scientific Research, Kuwait City, Kuwait
| | - Sugumaran Karuppiah
- Bioprocess Engineering Laboratory, School of Chemical and Biotechnology, Centre for Bioenergy, SASTRA Deemed to be University, Thanjavur, India
| | - Mahalakshmi Mathivanan
- School of Civil Engineering, Centre for Bioenergy, SASTRA Deemed to be University, Thanjavur, India
| | - Rathinakumar Vedhachalam
- School of Civil Engineering, Centre for Bioenergy, SASTRA Deemed to be University, Thanjavur, India
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7
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Mohammadzadeh F, Golshan M, Haddadi-Asl V, Salami-Kalajahi M. Adsorption kinetics of methylene blue from wastewater using pH-sensitive starch-based hydrogels. Sci Rep 2023; 13:11900. [PMID: 37488175 PMCID: PMC10366085 DOI: 10.1038/s41598-023-39241-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Accepted: 07/21/2023] [Indexed: 07/26/2023] Open
Abstract
In this work, starch/poly(acylic acid) hydrogels were synthesized through a free radical polymerization technique. The molar ratios of acrylic acid to N,N'-methylenebisacrylamide were 95:5, 94:6, and 93:7. The samples exhibited an amorphous porous structure, indicating that the size of the pores was contingent upon the amount of cross-linking agent. The quantity of acrylic acid in structure rose with a little increase in the amount of the cross-linking agent, which improved the hydrogels' heat stability. The swelling characteristics of the hydrogels were influenced by both the pH level and the amount of cross-linking agent. The hydrogel with a ratio of 94:6 exhibited the highest degree of swelling (201.90%) at a pH of 7.4. The dominance of the Fickian effect in regulating water absorption in the synthesized hydrogels was demonstrated, and the kinetics of swelling exhibited agreement with Schott's pseudo-second order model. The absorption of methylene blue by the hydrogels that were developed was found to be influenced by various factors, including the concentration of the dye, the quantity of the cross-linking agent, the pH level, and the duration of exposure. The hydrogel 95:5 exhibited the highest adsorption effectiveness (66.7%) for the dye solution with a concentration of 20 mg/L at pH 10.0. The examination of the kinetics and isotherms of adsorption has provided evidence that the process of physisorption takes place on heterogeneous adsorbent surfaces and can be explained by an exothermic nature.
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Affiliation(s)
- Fatemeh Mohammadzadeh
- Department of Polymer Engineering and Color Technology, Amirkabir University of Technology, Tehran, Iran
| | - Marzieh Golshan
- Faculty of Polymer Engineering, Sahand University of Technology, P.O. Box 51335-1996, Tabriz, Iran
- Institute of Polymeric Materials, Sahand University of Technology, P.O. Box 51335-1996, Tabriz, Iran
| | - Vahid Haddadi-Asl
- Department of Polymer Engineering and Color Technology, Amirkabir University of Technology, Tehran, Iran.
| | - Mehdi Salami-Kalajahi
- Faculty of Polymer Engineering, Sahand University of Technology, P.O. Box 51335-1996, Tabriz, Iran.
- Institute of Polymeric Materials, Sahand University of Technology, P.O. Box 51335-1996, Tabriz, Iran.
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Chen Z, Yu S, Liu J, Zhang Y, Wang Y, Yu J, Yuan M, Zhang P, Liu W, Zhang J. C, F co-doping Ag/TiO 2 with visible light photocatalytic performance toward degrading Rhodamine B. ENVIRONMENTAL RESEARCH 2023:116311. [PMID: 37290622 DOI: 10.1016/j.envres.2023.116311] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2022] [Revised: 05/29/2023] [Accepted: 05/31/2023] [Indexed: 06/10/2023]
Abstract
The organic pollutants in industrial wastewater continuously endanger human health. Therefore, effective treatment of organic pollutants is very urgent. Photocatalytic degradation technology is an excellent solution to remove it. TiO2 photocatalysts are easy to prepare and have high catalytic activity, unfortunately, TiO2 only absorbs ultraviolet light limiting its utilization of visible light. In this study, a facile environmentally friendly synthesis of Ag-coated on micro-wrinkled TiO2-based catalysts in order to extend the absorption of Visible light. Firstly, a fluorinated titanium dioxide precursor was prepared by a one-step solvothermal method, and the precursor was calcined at high temperature in a nitrogen atmosphere to form a carbon dopant, and then a surface silver-deposited carbon/fluorine co-doped TiO2 photocatalyst C/F-Ag-TiO2 was prepared by a hydrothermal method The results showed that the Ag was coated on the wrinkled TiO2 layer and C/F-Ag-TiO2 photocatalyst was synthetized successfully. Benefit from the synergistic effect of doped carbon and fluorine atoms in combination with the quantum size effect of the surface silver nanoparticles, the band gap energy of C/F-Ag-TiO2 (2.56 eV) is obviously lower than anatase (3.2eV). The photocatalyst achieved an impressive degradation rate of 84.2% for Rhodamine B in 4 h, with a degradation rate constant of 0.367 h-1, which was 17 times higher than that of P25 under visible light. Therefore, the C/F-Ag-TiO2 composite is a promising candidate as a highly efficient photocatalyst for environmental remediation.
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Affiliation(s)
- Zhengyang Chen
- School of Materials Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang, 212003, China
| | - Shui Yu
- School of Materials Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang, 212003, China
| | - Jianping Liu
- School of Materials Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang, 212003, China
| | - Yamei Zhang
- School of Science, Jiangsu University of Science and Technology, Zhenjiang, 212003, China.
| | - Yuchen Wang
- School of Materials Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang, 212003, China
| | - Jiangyi Yu
- School of Materials Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang, 212003, China
| | - Ming Yuan
- School of Materials Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang, 212003, China
| | - Pengchao Zhang
- School of Materials Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang, 212003, China
| | - Wen Liu
- School of Materials Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang, 212003, China.
| | - Jiaoxia Zhang
- School of Materials Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang, 212003, China.
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Pasupathi S, Syed Abdul Rahman S, Karuppiah S. Removal of cationic and anionic toxic pollutants from simulated solutions using Sterculia foetida pod (SFP): equilibrium isotherm, kinetics, and characterization. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2023; 25:1913-1931. [PMID: 37165520 DOI: 10.1080/15226514.2023.2208230] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
The present work explores the sorption performance of Sterculia foetida pod (SFP) for the removal of methylene blue (MB) and chromium (Cr6+) from simulated solutions separately. The material characteristics namely textural analysis (specific surface area: 2.45 m2/g), morphological behavior (heterogeneous morphology containing pores and cavities), functional analysis (COO- stretching, C-O-C stretching vibrations, and -OH stretching) and thermal behavior (279.4 °C) were examined by various analytical techniques namely BET, SEM, FTIR, and TGA. Using non-linear Langmuir isotherm analysis, the maximal sorption capacity of SFP for the removal of MB and Cr6+ was predicted to be 74.1 mg/g and 27.3 mg/g, respectively. The optimized condition for sorption of MB and Cr6+ onto SFP was: dosage: 0.07 mg/L, initial pH: 7 (MB), and 2 (Cr6+). Thermodynamic data analysis confirmed the endothermic, favorable, spontaneous, and physisorption nature of sorption. The SFP has shown significant regeneration capacity in the consecutive runs (MB: 92.5% removal till 5th trial; Cr6+: 97.6% removal till 3rd trial). Based on these findings, SFP is a promising low-cost and eco-friendly candidate for the removal of anionic and cationic toxic pollutants in the absence of energy and chemical expenditure.NOVELTY STATEMENTSterculia foetida pod (SFP) explored for the removal of anionic and cationic toxic pollutants in the absence of energy and chemical expenditure.Mechanism for the interaction between toxic pollutants and SFP was predicted.Better sorption capacity (MB: 74.1 mg/g; Cr6+: 27.8 mg/g) and better regeneration capacity (MB: 92.5% for 5th trial; Cr6+: 97.6% for 3rd trial) was achieved.A feasible and spontaneous nature of sorption process toward the removal of MB and Cr6+ was demonstrated using thermodynamic relations.
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Affiliation(s)
- Saroja Pasupathi
- School of Chemical and Biotechnology, Bioprocess Engineering Laboratory, Centre for Bioenergy, SASTRA Deemed to be University, Thanjavur, India
| | - Sameeha Syed Abdul Rahman
- School of Chemical and Biotechnology, Bioprocess Engineering Laboratory, Centre for Bioenergy, SASTRA Deemed to be University, Thanjavur, India
| | - Sugumaran Karuppiah
- School of Chemical and Biotechnology, Bioprocess Engineering Laboratory, Centre for Bioenergy, SASTRA Deemed to be University, Thanjavur, India
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Patil P, Sarathbabu M, Pathak S, Sengupta A. Carbonate treated coffee powder (CTCP) for selective sorption of Pu 4+ over Am 3+, Np 4+, NpO 22+, and PuO 22+ from aqueous acidic solution: Investigation on mechanism, kinetics, thermodynamics, stripping and radiolytic stability. Appl Radiat Isot 2023; 194:110695. [PMID: 36774820 DOI: 10.1016/j.apradiso.2023.110695] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Revised: 12/12/2022] [Accepted: 01/24/2023] [Indexed: 02/09/2023]
Abstract
An attempt was made for understanding the sorption behaviour of different actinide ions Pu4+, PuO22+, Am3+, Np4+, and NpO22+ on carbonate treated exhausted coffee powder (CTCP). Very efficient sorption of Pu4+ over other actinide ions from aqueous acidic medium was observed. Almost 4 h were required for achieving equilibrium. Experimental results for Pu+4 were fitted into different sorption isotherm model: Langmuir isotherm, Freundlich isotherm, D.R, isotherm and Temkin isotherm. Based on the linear regression, it was found that, Freundlich isotherm was predominantly operative. Pseudo 2nd order kinetics was found to be effective for the sorption of Pu+4. More than 80 % of loaded Pu4+ was found to desorb by 0.25 M oxalic acid solution. CTCP exhibited relatively good radiation stability. Sorption of Pu+4 on CTCP was exothermic, and spontaneous in nature. The sorption process was simple, cost effective and environmentally benign, as it did not involve any sophisticated, multi-step, sorbent synthesis.
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Affiliation(s)
- Prashant Patil
- Product Development Division, Bhabha Atomic Research Centre, Mumbai, 400085, India
| | - M Sarathbabu
- Product Development Division, Bhabha Atomic Research Centre, Mumbai, 400085, India
| | - Sachin Pathak
- Product Development Division, Bhabha Atomic Research Centre, Mumbai, 400085, India
| | - Arijit Sengupta
- Radiochemistry Division, Bhabha Atomic Research Centre, Mumbai, 400085, India; Homi Bhabha National Institute, Mumbai, 400094, India.
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Khan AA, Naqvi SR, Ali I, Arshad M, AlMohamadi H, Sikandar U. Algal-derived biochar as an efficient adsorbent for removal of Cr (VI) in textile industry wastewater: Non-linear isotherm, kinetics and ANN studies. CHEMOSPHERE 2023; 316:137826. [PMID: 36640973 DOI: 10.1016/j.chemosphere.2023.137826] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Revised: 12/17/2022] [Accepted: 01/10/2023] [Indexed: 06/17/2023]
Abstract
Textile industries release effluent that contains the vast majority of heavy metals in which Cr (VI) is a toxic carcinogenic element that causes an environmental problem. The aim of the work is to synthesize algae-derived biochar derived from algae using slow pyrolysis at an operating temperature of 500 °C, a heating rate of 10 °C/min and a residence time of 60 min and to use it as an adsorbent to remove Cr (VI). The batch experiment was carried out using different concentrations of Cr (VI) (1, 10, 25, 50, 100, 125, 150 and 200 ppm) at different intervals of time (2.5, 5, 10, 15, 30, 60, 120 and 240 min). The maximum removal percentage of Cr (VI) is 97.88% for the metal concentration of 1 ppm exhibiting non-linear adsorption isotherm (Langmuir, Freundlich, Dubinin-Radushkevich, and Temkin models) and kinetic models (pseudo-first order, pseudo-second order, nth order, and intra-particle diffusion) were analyzed using a solver add-in of Microsoft Excel. According to the results, the Langmuir isotherm model (R2 = 0.999) and pseudo-nth order models are suitable to describe monolayer adsorption and the process kinetics, respectively. The maximum adsorption capacity of algal biochar to adsorb is 186.94 mg/g. For the prediction of the optimal removal efficacy, an artificial neural network of the MLP-2-7-1 model was used. The results obtained are useful for future work using algal biochar as an adsorbent of Cr (VI) from textile wastewater to achieve sustainable development goals.
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Affiliation(s)
- Abdul Ahad Khan
- Laboratory of Alternative Fuels & Sustainability, School of Chemical & Materials Engineering, National University of Sciences & Technology, H-12, Islamabad, Pakistan
| | - Salman Raza Naqvi
- Laboratory of Alternative Fuels & Sustainability, School of Chemical & Materials Engineering, National University of Sciences & Technology, H-12, Islamabad, Pakistan.
| | - Imtiaz Ali
- Department of Chemical and Materials Engineering, King Abdulaziz University, Rabigh, Saudi Arabia
| | - Muazzam Arshad
- Department of Chemical Engineering, University of Engineering & Technology, KPK, Peshawar, Pakistan
| | - Hamad AlMohamadi
- Department of Chemical Engineering, Faculty of Engineering, Islamic University of Madinah, Madinah, Saudi Arabia
| | - Umair Sikandar
- Laboratory of Alternative Fuels & Sustainability, School of Chemical & Materials Engineering, National University of Sciences & Technology, H-12, Islamabad, Pakistan
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Mathialagan K, Ramesh Kumar K, Sadhanantham JDD, Syed Abdul Rahman S, Pasupathi S, Mathivanan M, Karuppiah S. Delonix regia seed pod-an efficient biosorptive candidate toward the removal of Rhodamine B from simulated wastewater: characterization, kinetics, and equilibrium approach. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2022; 25:1077-1094. [PMID: 36219071 DOI: 10.1080/15226514.2022.2128042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
This study focused on the comparative analysis of biosorption performance of Delonix regia seed pod toward the removal of Rhodamine B (RB) from simulated solution using native (DRSP) and chemically treated form (ADRSP). The surface morphology, structural analysis, textural properties, and thermal analysis of DRSP and ADRSP were examined using scanning electron microscopy (SEM), BET analysis, Fourier transform infrared spectroscopy (FTIR), and thermogravimetric analysis (TGA), respectively. FTIR analysis concluded that surface functional groups like hydroxyl -OH stretching, C-N stretching, and C = C stretching of the aromatic ring were largely responsible for the attachment of RB. The chemical treatment enhanced the surface morphology of D. regia seed in terms of heterogeneity, distinct depth cavities, and irregular pores responsible for RB biosorption. The biosorption of RB was investigated using parametric analyses such as solution pH, biosorbent dosage, contact time, initial RB concentration, and operating temperature. The obtained equilibrium data were fitted with different isotherm and kinetic models. Langmuir isotherm model and pseudo-second-order kinetic were well suitable for the biosorption of RB using DRSP and ADRSP. The maximum monolayer biosorption capacities (mg/g) of DRSP and ADRSP were predicted to be 39.37 and 60.61, respectively. Using thermodynamic principles, the removal of RB was found to be thermodynamically feasible, endothermic, and spontaneous process. The results of the present study proved that DRSP and ADRSP can be identified as promising biosorbents for the removal of RB.
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Affiliation(s)
- Kaviya Mathialagan
- Bioprocess Engineering Laboratory, Centre for Bioenergy, School of Chemical and Biotechnology, SASTRA Deemed to be University, Thanjavur, India
| | - Kaviya Ramesh Kumar
- Bioprocess Engineering Laboratory, Centre for Bioenergy, School of Chemical and Biotechnology, SASTRA Deemed to be University, Thanjavur, India
| | - Jaya Durga Devi Sadhanantham
- Bioprocess Engineering Laboratory, Centre for Bioenergy, School of Chemical and Biotechnology, SASTRA Deemed to be University, Thanjavur, India
| | - Sameeha Syed Abdul Rahman
- Bioprocess Engineering Laboratory, Centre for Bioenergy, School of Chemical and Biotechnology, SASTRA Deemed to be University, Thanjavur, India
| | - Saroja Pasupathi
- Bioprocess Engineering Laboratory, Centre for Bioenergy, School of Chemical and Biotechnology, SASTRA Deemed to be University, Thanjavur, India
| | - Mahalakshmi Mathivanan
- Centre for Bioenergy, School of Civil Engineering, SASTRA Deemed to be University, Thanjavur, India
| | - Sugumaran Karuppiah
- Bioprocess Engineering Laboratory, Centre for Bioenergy, School of Chemical and Biotechnology, SASTRA Deemed to be University, Thanjavur, India
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13
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Carbon nanotubes/ polyacrylonitrile composite nanofiber mats for highly efficient dye adsorption. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.129703] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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14
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Alizadeh M, Peighambardoust SJ, Foroutan R, Azimi H, Ramavandi B. Surface magnetization of hydrolyzed Luffa Cylindrica biowaste with cobalt ferrite nanoparticles for facile Ni 2+ removal from wastewater. ENVIRONMENTAL RESEARCH 2022; 212:113242. [PMID: 35413302 DOI: 10.1016/j.envres.2022.113242] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Revised: 03/22/2022] [Accepted: 04/01/2022] [Indexed: 06/14/2023]
Abstract
A novel magnetic adsorbent based on hydrolyzed Luffa Cylindrica (HLC) was synthesized through the chemical co-precipitation technique, and its potential was evaluated in the adsorptive elimination of divalent nickel ions from water medium. Morphological assessment and properties of the adsorbent were performed using FTIR, SEM, EDX, XRD, BET, and TEM techniques. The effect of pH, temperature, time and nickel concentration on the removal efficiency was studied, and pH = 6, room temperature (25 °C), contact time of 60 min, and Ni2+ ion concentration of 10 mg.L-1 were introduced as the optimal values. At optimal conditions, the removal efficiency of Ni2+ ions using HLC and HLC/CoFe2O4 magnetic composite was calculated as 96.38 and 99.13%, respectively. The adsorption process kinetic followed a pseudo-first-order model. Langmuir isotherm was suitable for modelling the experimental data of the Ni2+ adsorption. The maximum elimination capacity of HLC and HLC/CoFe2O4 samples was calculated as 42.75 and 44.42 mg g-1, respectively. Furthermore, thermodynamic investigations proved the spontaneous and exothermic nature of the process. The adsorption efficiency was decreased with increasing the content of Ca2+ and Na + cations in aqueous media. During reusability of the synthesized adsorbents, it was found that after 8 cycles, no significant decrease has occurred in the adsorption efficiency. In addition, real wastewater treatment results proved that HLC/CoFe2O4 magnetic composite has an excellent performance in removal of heavy metals pollutant from shipbuilding effluent.
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Affiliation(s)
- Mehran Alizadeh
- Faculty of Chemical and Petroleum Engineering, University of Tabriz, Tabriz, 5166616471, Iran
| | | | - Rauf Foroutan
- Faculty of Chemical and Petroleum Engineering, University of Tabriz, Tabriz, 5166616471, Iran
| | - Hamidreza Azimi
- Department of Chemical Engineering, Faculty of Engineering, Azarbaijan Shahid Madani University, Tabriz, 5375171379, Iran
| | - Bahman Ramavandi
- Department of Environmental Health Engineering, Faculty of Health and Nutrition, Bushehr University of Medical Sciences, Bushehr, Iran
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15
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Improper Estimation of Thermodynamic Parameters in Adsorption Studies with Distribution Coefficient KD (qe/Ce) or Freundlich Constant (KF): Considerations from the Derivation of Dimensionless Thermodynamic Equilibrium Constant and Suggestions. ADSORPT SCI TECHNOL 2022. [DOI: 10.1155/2022/5553212] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Adsorption processes often include three important components: kinetics, isotherm, and thermodynamics. In the study of solid–liquid adsorption, “standard” thermodynamic equilibrium constant
; dimensionless) plays an essential role in accurately calculating three thermodynamic parameters: the standard Gibbs energy change (∆G°; kJ/mol), the standard change in enthalpy (∆H°; kJ/mol), and the standard change in entropy [∆S°; J/(mol × K)] of an adsorption process. Misconception of the derivation of the
constant that can cause calculative errors in values (magnitude and sign) of the thermodynamic parameters has been intensively reflected through certain kinds of papers (i.e., letters to editor, discussions, short communications, and correspondence like comment/rebuttal). The distribution coefficient (KD) and Freundlich constant (KF) have been intensively applied for calculating the thermodynamic parameters. However, a critical question is whether KD or KF is equal to
. This paper gives (1) thorough discussion on the derivation of thermodynamic equilibrium constant of solid–liquid adsorption process, (2) reasonable explanation on the inconsistency of (direct and indirect) application of KD or KF for calculating the thermodynamic parameters based on the derivation of
, and (3) helpful suggestions for improving the quality of papers published in this field.
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16
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Quantitative Study of the Enhanced Content and Chemical Stability of Functional Groups in Mesoporous Silica by In-Situ Co-condensation Synthesis. Catalysts 2022. [DOI: 10.3390/catal12060620] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022] Open
Abstract
The chemical stability and content of organic functional groups significantly affect the application of materials in the field of adsorption. In this study, we quantitatively studied the effect of in-situ co-condensation and post grafting on the physico-chemical properties and sorption properties of modified mesoporous silica. The results showed that the grafting method changed the morphology of mesoporous silica while the in-situ method kept the spherical morphology well, and the amino groups were both successfully introduced into the materials. Besides, the amino content of the material prepared by in-situ method (ami-MSN) was 2.71 mmol/g, which was significantly higher than the 0.98 mmol/g of the grafting method (ami-g-MS). Moreover, the chemical stability of functional groups in ami-MSN was much better than ami-g-MS. Furthermore, ami-MSN showed better capability in removing toxic metals of Pb, Cd, Ni, and Cu, and the removal efficiency of Pb reached 98.80%. Besides, ami-MSN exhibited higher dynamic CO2 adsorption of 0.78 mmol/g than ami-g-MS of 0.34 mmol/g. This study revealed the relationship between modification methods and the modification efficiency, functional groups stability, and sorption properties through quantitative comparative studies, which provided a reference for preparing modified mesoporous silica materials with high sorption properties.
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17
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Zhang J, Wang Z, Wang J, Zhang R, Dong X, Bian L. Investigation of binding mechanism for human plasminogen Kringle 5 with its potential receptor vWA1 domain in Cochlin by bio-specific technologies and molecular dynamic simulation. Bioorg Chem 2022; 127:105989. [DOI: 10.1016/j.bioorg.2022.105989] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Revised: 05/25/2022] [Accepted: 06/23/2022] [Indexed: 11/02/2022]
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18
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Zhou X, Yu X, Hao J, Liu H. Comments on the calculation of the standard equilibrium constant using the Langmuir model in Journal of Hazardous Materials 422 (2022) 126863. JOURNAL OF HAZARDOUS MATERIALS 2022; 429:128407. [PMID: 35236028 DOI: 10.1016/j.jhazmat.2022.128407] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Revised: 01/27/2022] [Accepted: 01/29/2022] [Indexed: 06/14/2023]
Abstract
The calculation of equilibrium constant from the Langmuir model is widely used in the literature. However, the dimensional problem of the equilibrium constant has often been ignored. For example, a recent publication on the strong properties of the new adsorbent for tetracycline. Nevertheless, this used an improper calculation of the standard equilibrium constant, confusing solute and solution. This creates dimension for K0 obtained from Eq. (13). Unfortunately, K0 should be dimensionless. In this comment, the origin and background of this kind of error is analyzed and the method for correcting the error is presented. Specifically, we establish a clear relationship between the Langmuir constant (KL) and the standard equilibrium constant (K0). We hope this comment clarifies the essence of calculating the standard equilibrium constant by using the Langmuir model, so others avoid the propagation of this kind of error.
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Affiliation(s)
- Xueyong Zhou
- School of Life Science, Shanxi Normal University, Taiyuan 030000, Shanxi, China.
| | - Xin Yu
- School of Life Science, Shanxi Normal University, Taiyuan 030000, Shanxi, China
| | - Jianchao Hao
- College of Agronomy & Resources and Environment, Tianjin Agricultural University, Tianjin 300384, China
| | - Huifen Liu
- College of Agronomy & Resources and Environment, Tianjin Agricultural University, Tianjin 300384, China
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Kazemi-Beydokhti A, Hassanpour-Souderjani H. Physical and chemical surface modification of carbon nanotubes for adsorptive desulfurization of aromatic impurities in diesel fuel. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:33558-33571. [PMID: 35028849 DOI: 10.1007/s11356-022-18576-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2021] [Accepted: 01/05/2022] [Indexed: 06/14/2023]
Abstract
Due to some environmental problems of sulfur compounds, it is necessary to eliminate these impurities from hydrocarbon fuels. To achieve effective removal of aromatic sulfur compounds such as benzothiophene and dibenzothiophene, different surface modification of carbon nanostructures, physical and chemical surface modifications, were utilized to reach the adsorptive desulfurization and oxidative desulfurization processes. The acid treatment by H2SO4/HNO3 and polymer-wrapping technique by polyethylene glycol were used for chemical and physical surface modification, respectively. Additionally, we tried to control the intensity and types of functional groups on the surface of carbon nanotubes. Besides, the efficiency of sulfur removal was measured. Both single-walled and multi-walled carbon nanotubes were utilized, and prepared samples have been investigated by FTIR, UV-Visible, TEM, Raman, and TGA techniques. The adsorption capacity values of each sample were evaluated by the temperature, time, and concentration parameters. The result shows that this surface modification can significantly improve the impurity removal of hydrocarbon fuel. Polymer-coated complexes showed higher removal values due to better dispersion than surface-oxidized carbon nanotubes. It was demonstrated that 90% of sulfur impurities with aromatic structure could be removed using an insignificant amount of the synthesized complex at moderate conditions. Besides, a comparison of laboratory data by conventional adsorption isotherms was investigated, and finally, the best operating conditions for maximum adsorbent performance were evaluated.
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Affiliation(s)
- Amin Kazemi-Beydokhti
- Department of Chemical Engineering, School of Petroleum and Petrochemical Engineering, Hakim Sabzevari University, Sabzevar, Iran.
| | - Hassan Hassanpour-Souderjani
- Department of Chemical Engineering, School of Petroleum and Petrochemical Engineering, Hakim Sabzevari University, Sabzevar, Iran
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20
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Chen Q, Tian E, Luo Z, Mo J. Adsorption film with sub-milli-interface morphologies via direct ink writing for indoor formaldehyde removal. JOURNAL OF HAZARDOUS MATERIALS 2022; 427:128190. [PMID: 35007806 DOI: 10.1016/j.jhazmat.2021.128190] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Revised: 12/18/2021] [Accepted: 12/29/2021] [Indexed: 06/14/2023]
Abstract
In-situ thermally regenerated flexible adsorption films are superior for long-term purification of indoor low-concentration volatile organic compounds (VOCs). To further improve the adsorption kinetics of the films, the surface morphology of adsorption films was suggested in hierarchical channel structure. However, such structure is far from practical applications because of its complicated fabrication method and limited flexibility. In this study, we proposed a convenient and fast method named direct ink writing (DIW) based 3D printing to fabricate flexible adsorption films. Inks were prepared to have appropriate rheological properties and good printability. Three types of adsorption film (flat, straight finned, and trough-like finned) were constructed on flexible polyimide circuit substrates by DIW. We utilized the printed adsorption films for indoor level (1 ppm) formaldehyde removal. The trough-like finned film achieved the best performance among the three printed films, showing a 275% longer penetration time and 252% larger effective adsorption capacity than the flat film. By conducting a 7-cycle adsorption-desorption experiment (more than 12 h), we verified that the films' adsorption performance could effectively recover via in-situ heating. This work could dance around the complicated coating process, increase the structural flexibility and reduce the adsorbent interfacial modification cost.
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Affiliation(s)
- Qiwei Chen
- Department of Building Science, Tsinghua University, Beijing 100084, China; Beijing Key Laboratory of Indoor Air Quality Evaluation and Control, Beijing 100084, China
| | - Enze Tian
- Songshan Lake Materials Laboratory, Dongguan 523808, China; Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - Ziyi Luo
- Department of Building Science, Tsinghua University, Beijing 100084, China; Beijing Key Laboratory of Indoor Air Quality Evaluation and Control, Beijing 100084, China
| | - Jinhan Mo
- Department of Building Science, Tsinghua University, Beijing 100084, China; Beijing Key Laboratory of Indoor Air Quality Evaluation and Control, Beijing 100084, China; Key Laboratory of Eco Planning & Green Building, Ministry of Education (Tsinghua University), Beijing 100084, China.
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21
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Subir Chowdhury, Ghosh P, Joy MTR, Karmaker S, Saha TK. Adsorption Characteristics of Amaranth onto Cetyltrimethylammonium Bromide—Modified Rice Husk in Aqueous Solution. COLLOID JOURNAL 2022. [DOI: 10.1134/s1061933x22020028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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22
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Islam M, Ghosh P, Karmaker S, Saha TK. Kinetics, Equilibrium and Thermodinamic Investigation of New Coccine Adsorption onto Chitosan 10B in Aqueous Solution. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY B 2022. [DOI: 10.1134/s1990793121100043] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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23
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Bhardwaj S, Sarkar T. Simultaneous removal of organic and inorganic pollutants from water by Ni/NiO/SnO 2 nanoparticles. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:22093-22105. [PMID: 34778913 DOI: 10.1007/s11356-021-17159-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Accepted: 10/18/2021] [Indexed: 06/13/2023]
Abstract
Herein, we report a facile synthesis of Ni/NiO/SnO2 hybrids where the core-shell-type Ni/NiO nanoparticle is decorated with the SnO2 nanoparticle to make a heterojunction and their potential evaluation for simultaneous removal of organic and inorganic pollutants. The metallic nickel core of the nanoparticle helps to separate easily from water magnetically and restricts the possible secondary contamination. The formation of semiconductor-semiconductor heterojunction enhances the photocatalytic activity to degrade the organic pollutants. The nanomaterial was characterized using microscopic, spectroscopic, and BET analyses. Results indicated an efficient degradation of ~ 94% of crystal violet in 40 min. An adsorption capacity of ~ 530 mg g-1 and ~ 650 mg g-1 of cadmium and lead ions, respectively, was found for single-component adsorption experiments, and ~ 520 mg g-1 and ~ 720 mg g-1 of cadmium and lead ions, respectively, were found for multi-component experiments. This observation suggested that the lead and cadmium ion adsorption process is affected by the synergistic and antagonistic effects, respectively. However, no significant change in the photocatalytic activity was observed for multi-component experiments. Results indicated that the process followed the Langmuir isotherm and pseudo-second-order kinetics irrespective of the number of pollutants present. An excellent adsorption capacity of metal ions and photodegradation capability of organic dye in multi-component solution, and possible reusability of the nanoparticle, make the Ni/NiO/SnO2 a potential material for simultaneous removal of organic and inorganic pollutants.
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Affiliation(s)
- Siddhant Bhardwaj
- University School of Chemical Technology, Guru Gobind Singh Indraprastha University, Dwarka Sector 16C, New Delhi, 110078, India
| | - Tapan Sarkar
- University School of Chemical Technology, Guru Gobind Singh Indraprastha University, Dwarka Sector 16C, New Delhi, 110078, India.
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24
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Waki M, Inagaki S. Molecular recognition of catechol on crystal-like surface of periodic mesoporous organosilica containing pyridinylethynylpyridine. Inorg Chem Front 2022. [DOI: 10.1039/d2qi00608a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new periodic mesoporous organosilica (PMO) containing pyridinylethynylpyridine (PEPy) was successfully synthesized under basic conditions in the presence of a cationic surfactant. The PEPy-PMO had a unique mesoporous structure with...
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25
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Zhuoke L, Jun C, Ting M, Dan N. Synthesis of bimannich base with thiazole and its corrosion inhibition effect on H 2S and CO 2 at high temperature. BMC Chem 2021; 15:59. [PMID: 34732232 PMCID: PMC8567579 DOI: 10.1186/s13065-021-00784-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Accepted: 10/12/2021] [Indexed: 12/02/2022] Open
Abstract
A bimannich-based TZBM containing a thiazole ring was obtained by synthesis of mannich bases. TZBM featured a stable structure at 260 °C, and corrosion inhibition effect on carbon steel in a gas–liquid environment with Cl− + H2S + CO2 at 180 °C. By analyzing the weight loss of steel exposed to different TZBM concentrations, the coverages of the inhibitor adsorbed on the surfaces were determined, and the results conformed to Langmuir isotherm model. Furthermore, the negative Gibbs free energy indicated that the adsorption was a spontaneous process. ![]()
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Affiliation(s)
- Li Zhuoke
- Southwest Oil and Gas Field Branch, Research Institute of Natural Gas Technology, Petrochina Ltd, Chengdu, Sichuan, China. .,National Energy High Sour Gas Reservoir Exploitation R&D Center, Chengdu, Sichuan, China. .,High Sulfur Gas Exploitation Pilot Test Center of CNPC, Chengdu, Sichuan, China.
| | - Cao Jun
- Southwest Oil and Gas Field Branch, Research Institute of Natural Gas Technology, Petrochina Ltd, Chengdu, Sichuan, China.,National Energy High Sour Gas Reservoir Exploitation R&D Center, Chengdu, Sichuan, China.,High Sulfur Gas Exploitation Pilot Test Center of CNPC, Chengdu, Sichuan, China
| | - Mao Ting
- Southwest Oil and Gas Field Branch, Research Institute of Natural Gas Technology, Petrochina Ltd, Chengdu, Sichuan, China.,National Energy High Sour Gas Reservoir Exploitation R&D Center, Chengdu, Sichuan, China.,High Sulfur Gas Exploitation Pilot Test Center of CNPC, Chengdu, Sichuan, China
| | - Ni Dan
- Northwest Sichuan Division, PetroChina Southwest Oil Gas Field Company, Jiangyou, 621714, Sichuan, China
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26
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Sudrajat H, Susanti A, Putri DKY, Hartuti S. Mechanistic insights into the adsorption of methylene blue by particulate durian peel waste in water. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2021; 84:1774-1792. [PMID: 34662312 DOI: 10.2166/wst.2021.361] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
This study aims to investigate the adsorption of methylene blue (MB) over particulate durian peel waste, which is chemically activated with hydrogen peroxide. The equilibrium data are well described by the Freundlich isotherm model, which indicates that the MB adsorption takes place predominantly on multilayers and heterogeneous surfaces of the biosorbent. The Freundlich adsorption constants, KF and n, are 11.06 L/g and 2.94, respectively. Thermodynamic data suggest that the MB adsorption occurs spontaneously and endothermically. The enthalpy and entropy for the MB adsorption are obtained as 10.26 kJ/mol and 0.058 kJ/mol K, respectively, in the temperature range of 303-323 K. Based on the stepwise desorption method, the adsorption of MB is dominated by physical interactions, particularly hydrogen bonding.
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Affiliation(s)
- Hanggara Sudrajat
- Department of Chemical Engineering, Faculty of Engineering, Universitas Jember, Jember 68121, Indonesia E-mail:
| | - Ari Susanti
- Department of Chemical Engineering, Faculty of Engineering, Universitas Jember, Jember 68121, Indonesia E-mail:
| | | | - Sri Hartuti
- Department of Environmental and Renewable Energy Systems, Graduate School of Engineering, Gifu University, Gifu 501-1193, Japan
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27
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Phenol removal from aqueous solution using synthetic V-shaped organic adsorbent: Kinetics, isotherm, and thermodynamics studies. Chem Phys Lett 2021. [DOI: 10.1016/j.cplett.2021.138959] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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28
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Herbert A, Kumar U, Janardhan P. Removal of hazardous dye from aqueous media using low-cost peanut (Arachis hypogaea) shells as adsorbents. WATER ENVIRONMENT RESEARCH : A RESEARCH PUBLICATION OF THE WATER ENVIRONMENT FEDERATION 2021; 93:1032-1043. [PMID: 33289248 DOI: 10.1002/wer.1491] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Revised: 11/23/2020] [Accepted: 11/24/2020] [Indexed: 06/12/2023]
Abstract
In the present article, an attempt is made for simple, low-cost, and efficient removal of Auramine dye using peanut (Arachis hypogaea) shells as adsorbents. Two different forms of adsorbents distilled water washed peanut shells (DPS) and NaOH treated peanut shells (NPS) were used as adsorbents. Both the adsorbents were studied using BET, pHPZC , FTIR, SEM, TGA, and XRD characterization techniques. Adsorption parameters such as effect of contact time, pH, initial dye concentration, adsorbent dose, and temperature were also assessed. Isotherm analysis at optimum conditions showed Langmuir fitted better with a qm value of 96.15 mg/g for DPS and 294.12 mg/g for NPS; while in kinetic analysis, pseudo-second order was superior. Thermodynamics study stated that adsorption process was endothermic in nature. Overall outcomes establish that the two forms of peanut shells, DPS, and NPS were excellent in removal of Auramine dye and are low cost also as preparation cost of DPS and NPS is 68.73 INR and 106.19 INR per kg, respectively. PRACTITIONER POINTS: Removal of Auramine dye from aqueous media using different forms of peanut (Arachis hypogaea) shells as adsorbents is discussed. qm (Langmuir) using DPS and NPS were found to be 96.15 and 294.12 mg/g, respectively. Preparation cost of DPS was 68.73 INR per 1 kg, whereas for NPS it was 106.19 INR per 1 kg.
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Affiliation(s)
- Arpan Herbert
- Department of Civil Engineering, National Institute of Technology Silchar, Silchar, Assam, India
| | - Upendra Kumar
- Department of Civil Engineering, National Institute of Technology Silchar, Silchar, Assam, India
| | - Prashanth Janardhan
- Department of Civil Engineering, National Institute of Technology Silchar, Silchar, Assam, India
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29
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Study of kinetic, thermodynamic, and isotherm of Sr adsorption from aqueous solutions on graphene oxide (GO) and (aminomethyl)phosphonic acid–graphene oxide (AMPA–GO). J Radioanal Nucl Chem 2021. [DOI: 10.1007/s10967-021-07845-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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30
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Bayuo J. An extensive review on chromium (vi) removal using natural and agricultural wastes materials as alternative biosorbents. JOURNAL OF ENVIRONMENTAL HEALTH SCIENCE & ENGINEERING 2021; 19:1193-1207. [PMID: 34150305 PMCID: PMC8172654 DOI: 10.1007/s40201-021-00641-w] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Accepted: 02/18/2021] [Indexed: 05/30/2023]
Abstract
Several conventional techniques for heavy metals decontamination for instance ion exchange, evaporation, precipitation and electroplating have been utilized in preceding years. Though these techniques have some drawbacks, adsorption using low-cost biosorbents is environmentally friendly. In this study, the potential of several natural and agricultural wastes as economical biosorbents for the reduction of Cr(VI) ions from polluted water has been reviewed. The application of adsorption models, as well as the impact of adsorption factors on heavy metals eradication, has been considered in this review. The study revealed that efficient reduction of Cr(VI) from water and wastewaters is highly dependent on the pH of the solution, shaking time, adsorbent type, initial concentration and temperature. The review of the relevant literature indicates that the maximum removal efficiency of Cr(VI) using the various low-cost adsorbents ranged from 50.0-100.0% with optimum pH and contact time ranging from 2.0-6.0 and 30.0-180.0 min, respectively at room temperature (25.0 °C). Furthermore, considering all the studies reviewed, the pseudo-second-kinetics and Langmuir isotherm are the dominant models that best described the Cr(VI) equilibrium data. The thermodynamic parameters suggested that the biosorption of Cr(VI) on the biosorbents was spontaneous, realistic and endothermic at the temperature range of 30.0-45.0 °C. It is found that the natural and agricultural wastes as cheap biosorbents are feasible replacements to commercial activated carbons for metal-contaminated water treatment. However, gaps have been identified to improve applicability, regeneration, reuse and safe discarding of the laden adsorbents, optimization and commercialization of suitable agricultural adsorbents.
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Affiliation(s)
- Jonas Bayuo
- Department of Science and Mathematics Education, C. K. Tedam University of Technology and Applied Sciences, Postal Box 24, Navrongo, Upper East Region Ghana
- Department of Applied Chemistry and Biochemistry, C. K. Tedam University of Technology and Applied Sciences, Postal Box 24, Navrongo, Upper East Region Ghana
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Derivation of adsorption capacity and adsorption isotherm by a single adsorbate concentration in liquid–solid system. CHEMICAL PAPERS 2021. [DOI: 10.1007/s11696-020-01476-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Investigation of Corrosion Protection of Austenitic Stainless Steel in 5.5 M Polluted Phosphoric Acid Using 5-Azidomethyl-7-morpholinomethyl-8-hydroxyquinoline as an Ecofriendly Inhibitor. INTERNATIONAL JOURNAL OF CORROSION 2021. [DOI: 10.1155/2021/6666811] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
The use of 5-azidomethyl-7-morpholinomethyl-8-hydroxyquinoline (AMH) as a corrosion inhibitor for AISI 321 stainless steel in 5.5 M polluted phosphoric acid was investigated using the hydrogen evolution technique, linear polarization curves, and impedance spectroscopy. Impedance measurements revealed that the dissolution of AISI 321 in 5.5 M polluted phosphoric acid was controlled by an activation mechanism, unchanged even with the addition of AMH at different concentrations. Polarization results showed that the inhibition ability was enhanced with increasing inhibitor concentration. AMH acted as a mixed-type inhibitor by random adsorption on the alloy surface, whatever the nature of the reaction that is taking place. The adsorption of AMH on the AISI 321 surface was also discussed via the Langmuir adsorption isotherm. The influence of elevating the solution temperature on the corrosion inhibition performance was studied. A quantum chemistry study with the DFT method was also conducted, which supplied a logical and exploitable theoretical explanation of the adsorption and the inhibition action of AMH on AISI 321.
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Alipour A, Babaei Shekardasht M, Gharbani P. Preparation, characterization, and in vitro bioactivity of magnetic co‐polymer [N, N‐dimethylaminopropylacrylamide‐co‐1‐allylimidazole] as a new nanocarrier for delivery of cefotaxime. J Appl Polym Sci 2021. [DOI: 10.1002/app.50900] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Arash Alipour
- Department of Chemistry Science and Research Branch, Islamic Azad University Tehran Iran
| | | | - Parvin Gharbani
- Department of Chemistry Ahar Branch, Islamic Azad University Ahar Iran
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Almeida RMRG, Pimentel WRO, Santos-Rocha MSR, Buffo MM, Farinas CS, Ximenes EA, Ladisch MR. Protective effects of non-catalytic proteins on endoglucanase activity at air and lignin interfaces. Biotechnol Prog 2021; 37:e3134. [PMID: 33591633 DOI: 10.1002/btpr.3134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Revised: 01/25/2021] [Accepted: 01/27/2021] [Indexed: 11/09/2022]
Abstract
The manner in which added non-catalytic proteins during enzymatic hydrolysis of lignocellulosic substrates enhances hydrolysis mechanisms is not completely understood. Prior research has indicated that a reduction in the non-specific adsorption of enzymes on lignin, and deactivation of enzymes exposed to air-liquid interface provide rationale. This work investigated root causes including effects of the air-liquid interface on non-catalytic proteins, and effects of lignin on endoglucanase. Three different experimental designs and three variables (air-liquid interfacial area, the types of lignin (acid or enzymatic lignin), and the presence of non-enzymatic protein (bovine serum albumin [BSA] or soy proteins ) were used. The results showed that acid isolated lignin adsorbed almost all endoglucanase activity initially present in supernatant, independent of air interface conditions (25 or 250 ml flasks) with the presence of BSA preventing this effect. Endoglucanase lost 30%-50% of its activity due to an air-liquid interface in the presence of lignin while addition of non-enzymatic protein helped to preserve this enzyme's activity. Langmuir and Freundlich models applied to experimental data indicated that the adsorption increases with increasing temperature for both endoglucanase and BSA. Adsorption of the enzyme and protein were endothermic with an increase in entropy. These results, combined, show that hydrophobicity plays a strong role in the adsorption of both endoglucanase and BSA on lignin.
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Affiliation(s)
| | | | | | - Mariane M Buffo
- Graduate Program of Chemical Engineering Federal University of Sao Carlos, Sao Carlos, Sao Paulo, Brazil
| | - Cristiane Sanchez Farinas
- Graduate Program of Chemical Engineering Federal University of Sao Carlos, Sao Carlos, Sao Paulo, Brazil.,Embrapa Instrumentação, São Carlos, São Paulo, Brazil
| | - Eduardo A Ximenes
- Laboratory of Renewable Resources Engineering-Department of Agricultural Biological Engineering Purdue University, West Lafayette, Indiana, USA
| | - Michael R Ladisch
- Laboratory of Renewable Resources Engineering-Department of Agricultural Biological Engineering Purdue University, West Lafayette, Indiana, USA
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Abstract
Biochar is a porous material obtained by biomass thermal degradation in oxygen-starved conditions. It is nowadays applied in many fields. For instance, it is used to synthesize new materials for environmental remediation, catalysis, animal feeding, adsorbent for smells, etc. In the last decades, biochar has been applied also to soils due to its beneficial effects on soil structure, pH, soil organic carbon content, and stability, and, therefore, soil fertility. In addition, this carbonaceous material shows high chemical stability. Once applied to soil it maintains its nature for centuries. Consequently, it can be considered a sink to store atmospheric carbon dioxide in soils, thereby mitigating the effects of global climatic changes. The literature contains plenty of papers dealing with biochar’s environmental effects. However, a discrepancy exists between studies dealing with biochar applications and those dealing with the physical-chemistry behind biochar behavior. On the one hand, the impression is that most of the papers where biochar is tested in soils are based on trial-and-error procedures. Sometimes these give positive results, sometimes not. Consequently, it appears that the scientific world is divided into two factions: either supporters or detractors. On the other hand, studies dealing with biochar’s physical-chemistry do not appear helpful in settling the factions’ problem. This review paper aims at collecting all the information on physical-chemistry of biochar and to use it to explain biochar’s role in different fields of application.
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Lakkaboyana SK, Soontarapa K, Asmel NK, Kumar V, Marella RK, Yuzir A, Wan Yaacob WZ. Synthesis and characterization of Cu(OH) 2-NWs-PVA-AC Nano-composite and its use as an efficient adsorbent for removal of methylene blue. Sci Rep 2021; 11:5686. [PMID: 33707529 PMCID: PMC7970965 DOI: 10.1038/s41598-021-84797-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Accepted: 02/13/2021] [Indexed: 01/21/2023] Open
Abstract
The present study focused on the synthesis of copper hydroxide nanowires decorated on activated carbon (Cu(OH)2-NWs-PVA-AC). The obtained Cu(OH)2-NWs-PVA-AC Nano-composite was distinguished by XRD, SEM, EDX, BET, FTIR and XPS respectively. Besides, different variables such as solution pH, and initial dye concentration, contact time, and temperature were performed on the adsorption efficiency of MB in a small batch reactor. Further, the experimental results are analyzed by various kinetic models via PFO, PSO, intra-particle diffusion and Elovich models, and the results revealed that among the kinetic models, PSO shows more suitability. In addition, different adsorption isotherms were applied to the obtained experimental data and found that Langmuir-Freundlich and Langmuir isotherm were best fits with the maximum adsorption capacity of 139.9 and 107.6 mg/g, respectively. The Nano-composite has outstanding MB removal efficiency of 94-98.5% with a span of 10 min. and decent adsorption of about 98.5% at a pH of 10. Thermodynamic constants like Gibbs free energy, entropy, and enthalpy were analyzed from the temperature reliance. The results reveal the adsorption processes are spontaneous and exothermic in nature. The high negative value of ΔG° (- 44.11 to - 48.86 kJ/mol) and a low negative value of ΔH° (- 28.96 kJ/mol) show the feasibility and exothermic nature of the adsorption process. The synthesized dye was found to be an efficient adsorbent for the potential removal of cationic dye (methylene blue) from wastewater within a short time.
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Affiliation(s)
- Sivarama Krishna Lakkaboyana
- Department of Chemical Technology, Faculty of Sciences, Chulalongkorn University, Pathumwan, Bangkok, 10330, Thailand.
- Center of Excellence on Petrochemical and Materials Technology, Chulalongkorn University, Pathumwan, Bangkok, 10330, Thailand.
| | - Khantong Soontarapa
- Department of Chemical Technology, Faculty of Sciences, Chulalongkorn University, Pathumwan, Bangkok, 10330, Thailand.
- Center of Excellence on Petrochemical and Materials Technology, Chulalongkorn University, Pathumwan, Bangkok, 10330, Thailand.
| | - Nabel Kalel Asmel
- Building and Construction Technology Engineering, Northern Technical University, 41002, Mosul, Iraq
| | - Vinay Kumar
- Department of Biotechnology, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand, 247667, India
| | - Ravi Kumar Marella
- Department of Chemistry (H & S), PACE Institute of Technology & Sciences, Ongole, Andhra Pradesh, 523001, India
| | - Ali Yuzir
- Department of Environmental Engineering and Green Technology (EGT), MJIIT- Universiti Teknologi Malaysia, Jalan Sultan Yahya Petra, 54100, Kuala Lumpur, Malaysia
| | - Wan Zuhairi Wan Yaacob
- Geology Program, School of Environmental Science and Natural Resources, FST, University Kebangsaan Malaysia, 43600, Bangi, Selangor, Malaysia
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Aseperi AK, Busquets R, Hooda PS, Cheung PCW, Barker J. Behaviour of neonicotinoids in contrasting soils. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2020; 276:111329. [PMID: 32932069 DOI: 10.1016/j.jenvman.2020.111329] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2020] [Revised: 08/27/2020] [Accepted: 08/29/2020] [Indexed: 06/11/2023]
Abstract
Neonicotinoids are widely used to control insect pests in agriculture. Their presence in the environment can affect the health of non-target insects and aquatic animals. The behaviour of four neonicotinoids, namely imidacloprid, acetamiprid, thiacloprid and thiamethoxam, has been investigated in soils with contrasting characteristics to understand their migration in soil and ecological risk. Among the study neonicotinoids, thiamethoxam and thiacloprid were found to be the least and most sorbed neonicotinoids by all the soils, respectively (up to 186 time greater adsorption of thiacloprid), and their uptake was affected by the content of organic matter in the soil. Leaching studies in columns confirmed that thiamethoxam leached out of the soils readily, pointing out to a relatively high risk of ground water contamination with possible ecological impact when thiamethoxam is used in soils with low organic matter. In soil column studies, the soil with the lowest organic matter presents the greatest residue of neonicotinoids in the sub-surface (≤5 cm). In contrast the soil richer in organic matter presented most of the contamination deeper down in the column; a factor to be considered in the remediation from soil.
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Affiliation(s)
- Adeniyi K Aseperi
- School of Life Sciences, Pharmacy and Chemistry, Kingston University London, Kingston-upon-Thames, Surrey, KT1 2EE, United Kingdom.
| | - Rosa Busquets
- School of Life Sciences, Pharmacy and Chemistry, Kingston University London, Kingston-upon-Thames, Surrey, KT1 2EE, United Kingdom.
| | - Peter S Hooda
- School of Engineering and Environment, Kingston University London, Kingston-upon-Thames, Surrey, KT1 2EE, United Kingdom
| | - Philip C W Cheung
- Department of Chemical Engineering, Imperial College, London, SW7 2AZ, United Kingdom
| | - James Barker
- School of Life Sciences, Pharmacy and Chemistry, Kingston University London, Kingston-upon-Thames, Surrey, KT1 2EE, United Kingdom
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Subarna Karmaker, Nag AJ, Saha TK. Adsorption of Reactive Blue 4 Dye onto Chitosan 10B in Aqueous Solution: Kinetic Modeling and Isotherm Analysis. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2020. [DOI: 10.1134/s0036024420110126] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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39
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Hafdi H, Joudi M, Mouldar J, Hatimi B, Nasrellah H, El Mhammedi MA, Bakasse M. Design of a new low cost natural phosphate doped by nickel oxide nanoparticles for capacitive adsorption of reactive red 141 azo dye. ENVIRONMENTAL RESEARCH 2020; 184:109322. [PMID: 32146215 DOI: 10.1016/j.envres.2020.109322] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2019] [Revised: 02/14/2020] [Accepted: 02/28/2020] [Indexed: 06/10/2023]
Abstract
Nickel oxide doped natural phosphate (NP/NiO) nanoparticles were thermally synthesized for effective adsorption of Reactive Red 141 (RR141) as toxic dye model, characterization methods such as X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy combined with energy dispersive X-ray analysis(SEM-EDAX)and have been employed to identify the adsorbent. Surface area and pore size volume were determined by the Brunauer, Emmett and Teller (BET) method. Environmental factors such as pH, time of contact, initial RR141 concentration, the dose of adsorbent and solution temperature have been all put to the test to evaluate optimum adsorption activity. Thermal processing NP/NiO at 1% NiO doping percentage was effectual for exhibiting best adsorption behavior at an annealing temperature of 600 °C. Furthermore, batch experiments revealed significant adsorption activity reaching 96%. The maximal adsorption capacity was found to be 38.91 mg of RR 141 per 0.1 g of the adsorbent in only 40min of contact, at an initial colorant concentration of 20 mg L-1, pH 6 at ambient temperature and a volume of 100 ml. Langmuir isotherm model was more adequate to describe the adsorption process than the Freundlich model. The rate mechanism of the adsorption process was determined from the intraparticle diffusion model, Boyd plot revealed that the adsorption of the dye on the NP/NiO was mainly governed by film diffusion. Moreover, the dye adsorption was spontaneous and exothermic. The mechanism of adsorption may involve chemical adsorption through hydrogen bonding mechanism and electrostatic interactions between the dye molecules and the adsorbent. Thermal regeneration was feasible only for three cycles, the adsorbent also showed great potential for real textile wastewater treatment.
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Affiliation(s)
- H Hafdi
- Laboratory of Chemistry Organic, Bioorganic and Environment, Faculty of Science, University Chouaib Doukkali, El Jadida, Morocco
| | - M Joudi
- Laboratory of Chemistry Organic, Bioorganic and Environment, Faculty of Science, University Chouaib Doukkali, El Jadida, Morocco
| | - J Mouldar
- Laboratory of Chemistry Organic, Bioorganic and Environment, Faculty of Science, University Chouaib Doukkali, El Jadida, Morocco
| | - B Hatimi
- Laboratory of Chemistry Organic, Bioorganic and Environment, Faculty of Science, University Chouaib Doukkali, El Jadida, Morocco
| | - H Nasrellah
- Laboratory of Chemistry Organic, Bioorganic and Environment, Faculty of Science, University Chouaib Doukkali, El Jadida, Morocco
| | - M A El Mhammedi
- University Soultan Moulay Slimane, Laboratory of Chemistry, Modeling and Environmental Sciences, Polydisciplinary Faculty, Khouribga, Morocco
| | - M Bakasse
- Laboratory of Chemistry Organic, Bioorganic and Environment, Faculty of Science, University Chouaib Doukkali, El Jadida, Morocco.
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Akter B, Khan AI, Karmaker S, Ghosh P, Saha S, Polash SA, Islam Z, Sarker SR, Hossain MS, Yasui H, Saha TK. Chelation of zinc(II) with poly(γ-glutamic acid) in aqueous solution: kinetics, binding constant, and its antimicrobial activity. Polym Bull (Berl) 2020. [DOI: 10.1007/s00289-020-03165-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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Zhang C, Luan J, Yu X, Chen W. Characterization and adsorption performance of graphene oxide - montmorillonite nanocomposite for the simultaneous removal of Pb 2+ and p-nitrophenol. JOURNAL OF HAZARDOUS MATERIALS 2019; 378:120739. [PMID: 31202060 DOI: 10.1016/j.jhazmat.2019.06.016] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2018] [Revised: 06/04/2019] [Accepted: 06/05/2019] [Indexed: 06/09/2023]
Abstract
Montmorillonite-graphene oxide composite (MGC) with their own advantages was successfully fabricated for the simultaneous treatment of the combined pollution wastewater containing heavy metal ions and organic pollutants. The features of MGC were analyzed by X-ray diffraction, transmission electron microscopy, atomic force microscopy and Fourier transform infrared spectroscopy. Subsequently, a series of batch experiments were carried out to investigate the adsorption performance of Pb2+ and p-nitrophenol (PNP) onto MGC in single and binary system. The results indicated that MGC exhibited a gossamer layer with spots and a larger interlayer spacing. In single adsorption experiment, the removal of PNP by MGC reached 96.82%, while Pb2+ removal reached 98.94%, which was maintained at the same level as montmorillonite. In binary acidic system of Pb2+ and PNP, the removal of Pb2+ reached 98.23%, while PNP removal dropped to 51.06% due to their competitive adsorption. The thermodynamic study indicated that the chemisorption was predominant in the adsorption of Pb2+ onto MGC, while physisorption was for PNP. It was exactly that the strong competitiveness of Pb2+ brought the remarkable reduction in PNP adsorption capacity in the simultaneous adsorption.
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Affiliation(s)
- Chengyu Zhang
- College of Energy and Environment, Shenyang Aerospace University, No.37 Daoyi South Avenue, Shenbei New Area, Shenyang 110136, PR China
| | - Jingde Luan
- College of Energy and Environment, Shenyang Aerospace University, No.37 Daoyi South Avenue, Shenbei New Area, Shenyang 110136, PR China.
| | - Xiaokun Yu
- College of Energy and Environment, Shenyang Aerospace University, No.37 Daoyi South Avenue, Shenbei New Area, Shenyang 110136, PR China
| | - Wei Chen
- College of Energy and Environment, Shenyang Aerospace University, No.37 Daoyi South Avenue, Shenbei New Area, Shenyang 110136, PR China
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43
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Ma J, Zhou B, Zhang H, Zhang W, Wang Z. Activated municipal wasted sludge biochar supported by nanoscale Fe/Cu composites for tetracycline removal from water. Chem Eng Res Des 2019. [DOI: 10.1016/j.cherd.2019.07.013] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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44
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Zhang M, Yang J, Geng X, Li Y, Zha Z, Cui S, Yang J. Magnetic adsorbent based on mesoporous silica nanoparticles for magnetic solid phase extraction of pyrethroid pesticides in water samples. J Chromatogr A 2019; 1598:20-29. [DOI: 10.1016/j.chroma.2019.03.048] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2018] [Revised: 03/21/2019] [Accepted: 03/22/2019] [Indexed: 12/16/2022]
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45
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Bhat A, Smith B, Dinu CZ, Guiseppi-Elie A. Molecular engineering of poly(HEMA-co-PEGMA)-based hydrogels: Role of minor AEMA and DMAEMA inclusion. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 98:89-100. [DOI: 10.1016/j.msec.2018.12.083] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2018] [Revised: 12/13/2018] [Accepted: 12/25/2018] [Indexed: 11/29/2022]
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46
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Synthesis of Copper Oxide Nanowires-Activated Carbon (AC@CuO-NWs) and Applied for Removal Methylene Blue from Aqueous Solution: Kinetics, Isotherms, and Thermodynamics. J Inorg Organomet Polym Mater 2019. [DOI: 10.1007/s10904-019-01128-w] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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47
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Malik R, Goyal A, Yadav S, Gupta N, Goel N, Kaushik A, Kumar V, Tikoo KB, Singhal S. Functionalized magnetic nanomaterials for rapid and effective adsorptive removal of fluoroquinolones: Comprehensive experimental cum computational investigations. JOURNAL OF HAZARDOUS MATERIALS 2019; 364:621-634. [PMID: 30391852 DOI: 10.1016/j.jhazmat.2018.10.058] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Revised: 10/18/2018] [Accepted: 10/19/2018] [Indexed: 06/08/2023]
Abstract
Alarming growth of pharmaceutical residues in aquatic environment has elevated concerns about their potential impact on human health. Taking cognizance of this, the present study is focussed on the coating of cobalt ferrite nanoparticles with different functionalities and to use them as adsorbents for pharmaceutical waste. The thickness of the coating was analysed using Small angle X-ray scattering technique. Thorough study of the isotherms and kinetics were performed suggesting monolayer adsorption and pseudo kinetic order model, respectively. To get an insight of the interactions liable for adsorption of fluoroquinolones over the functionalized magnetic nanoparticles computational studies were undertaken. The results demonstrated substantial evidence proposing remarkable potential of these nanostructures as adsorbents for different pollutants with an additional advantage of stability and facile recoverability with a view to treat wastewater.
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Affiliation(s)
| | | | | | | | | | | | | | - K B Tikoo
- HR-TEM Facility Lab, NIPER, Punjab, India
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Azizian S, Eris S, Wilson LD. Re-evaluation of the century-old Langmuir isotherm for modeling adsorption phenomena in solution. Chem Phys 2018. [DOI: 10.1016/j.chemphys.2018.06.022] [Citation(s) in RCA: 95] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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49
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Magnetic nanoparticles modified with organic dendrimers containing methyl methacrylate and ethylene diamine for the microextraction of rosuvastatin. Mikrochim Acta 2018; 185:440. [DOI: 10.1007/s00604-018-2956-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2018] [Accepted: 08/09/2018] [Indexed: 10/28/2022]
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50
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Vilardi G, Mpouras T, Dermatas D, Verdone N, Polydera A, Di Palma L. Nanomaterials application for heavy metals recovery from polluted water: The combination of nano zero-valent iron and carbon nanotubes. Competitive adsorption non-linear modeling. CHEMOSPHERE 2018; 201:716-729. [PMID: 29547860 DOI: 10.1016/j.chemosphere.2018.03.032] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2017] [Revised: 01/27/2018] [Accepted: 03/05/2018] [Indexed: 05/24/2023]
Abstract
Carbon Nanotubes (CNTs) and nano Zero-Valent Iron (nZVI) particles, as well as two nanocomposites based on these novel nanomaterials, were employed as nano-adsorbents for the removal of hexavalent chromium, selenium and cobalt, from aqueous solutions. Nanomaterials characterization included the determination of their point of zero charge and particle size distribution. CNTs were further analyzed using scanning electron microscopy, thermogravimetric analysis and Raman spectroscopy to determine their morphology and structural properties. Batch experiments were carried out to investigate the removal efficiency and the possible competitive interactions among metal ions. Adsorption was found to be the main removal mechanism, except for Cr(VI) treatment by nZVI, where reduction was the predominant mechanism. The removal efficiency was estimated in decreasing order as CNTs-nZVI > nZVI > CNTs > CNTs-nZVI* independently upon the tested heavy metal. In the case of competitive adsorption, Cr(VI) exhibited the highest affinity for every adsorbent. The preferable Cr(VI) removal was also observed using binary systems of the tested metals by means of the CNTs-nZVI nanocomposite. Single species adsorption was better described by the non-linear Sips model, whilst competitive adsorption followed the modified Langmuir model. The CNTs-nZVI nanocomposite was tested for its reusability, and showed high adsorption efficiency (the qmax values decreased less than 50% with respect to the first use) even after three cycles of use.
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Affiliation(s)
- Giorgio Vilardi
- Department of Chemical Materials Environmental Engineering, 'La Sapienza' University of Rome, Rome, Italy.
| | - Thanasis Mpouras
- School of Civil Engineering, Department of Water Resources and Environmental Engineering, National Technical University of Athens, Iroon Polytechniou 9, 157 80 Zografou, Athens, Greece
| | - Dimitris Dermatas
- School of Civil Engineering, Department of Water Resources and Environmental Engineering, National Technical University of Athens, Iroon Polytechniou 9, 157 80 Zografou, Athens, Greece
| | - Nicola Verdone
- Department of Chemical Materials Environmental Engineering, 'La Sapienza' University of Rome, Rome, Italy
| | - Angeliki Polydera
- School of Civil Engineering, Department of Water Resources and Environmental Engineering, National Technical University of Athens, Iroon Polytechniou 9, 157 80 Zografou, Athens, Greece
| | - Luca Di Palma
- Department of Chemical Materials Environmental Engineering, 'La Sapienza' University of Rome, Rome, Italy
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