1
|
Dai N, Liu X, Yang L, Huang X, Song D, Wang S, Zhang K, Liu X, Dong W, Zhang Y. Cetyltrimethylammonium Bromide-Modified Laponite@Diatomite Composites for Enhanced Adsorption Performance of Organic Pollutants. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:8427-8439. [PMID: 38607689 DOI: 10.1021/acs.langmuir.3c03938] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/14/2024]
Abstract
This work aims to enhance the adsorption performance of Laponite @diatomite for organic pollutants by modifying it with cetyltrimethylammonium bromide (CTAB). The microstructure and morphology of the CTAB-modified Laponite @diatomite material were characterized using SEM, XRD, FTIR, BET, and TG. Furthermore, the influences of key parameters, containing pH, adsorbent dosage, reaction time, and reaction temperature, on the adsorption process were investigated. The kinetics, thermodynamics, and isotherm models of the adsorption process were analyzed. Finally, potential adsorption mechanisms were given based on the characterization. The research findings indicate that CTAB-La@D exhibits good adsorption performance toward Congo red (CR) over a broad pH range. The maximum adsorption capacity of CR was 451.1 mg/g under the optimum conditions (dosage = 10 mg, contact time = 240 min, initial CR concentration = 100 mg/L, temperature = 25 °C, and pH = 7). The adsorption process conformed to the pseudo-second-order kinetic model, and the adsorption isotherms indicated that the adsorption process of CR was more in line with the Langmuir model, and it was physical adsorption. Thermodynamic analysis illustrates that the adsorption process is exothermic and spontaneous. Additionally, the mechanisms of electrostatic adsorption and hydrophobic effect adsorption of CR were investigated through XPS and FTIR analysis. This work provides an effective pathway for designing high-performance adsorbents for the removal of organic dye, and the synthesized materials hold great capability for practical utilization in the treatment of wastewater.
Collapse
Affiliation(s)
- Nan Dai
- College of Materials Science and Engineering, Chongqing University, Chongqing 400044, PR China
| | - Xinyi Liu
- College of Materials Science and Engineering, Chongqing University, Chongqing 400044, PR China
| | - Lei Yang
- Department of Chemistry, Fudan University, Shanghai 200438, PR China
| | - Xi Huang
- College of Chemistry, Chongqing Normal University, Chongqing 400047, PR China
| | - Dan Song
- Chongqing Academy of Eco-Environmental Sciences, Chongqing 401147, PR China
| | - Song Wang
- College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518060, PR China
| | - Kai Zhang
- Chongqing Academy of Agricultural Sciences, Chongqing 401329, PR China
| | - Xiaoying Liu
- Army Logistics Academy of PLA, Chongqing 401331, PR China
| | - Wenxin Dong
- School of Resources and Safety Engineering, Chongqing University, Chongqing 400044, PR China
| | - Yuxin Zhang
- College of Materials Science and Engineering, Chongqing University, Chongqing 400044, PR China
| |
Collapse
|
2
|
Cheng D, Chen J, Wang J, Liu X. Adsorption behaviors and influencing factors of antibiotic norfloxacin on natural kaolinite-humic composite colloids in aquatic environment. Heliyon 2023; 9:e15979. [PMID: 37215810 PMCID: PMC10195911 DOI: 10.1016/j.heliyon.2023.e15979] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Revised: 04/27/2023] [Accepted: 04/28/2023] [Indexed: 05/24/2023] Open
Abstract
Particles are ubiquitous and abundant in natural waters and play a crucial role in the fate and bioavailability of organic pollution. In the present study, natural mineral (kaolinites, KL), organic (humic/fulvic acid, HA/FA) and their composite particles were further separated into particles fractions (PFs, >1 μm) and colloidal fractions (CFs, 1 kDa-1 μm) by cross-flow ultrafiltration (CFUF). This research demonstrated the role of kaolinite-humic composite colloids on the adsorption of fluoroquinolone norfloxacin (NOR). The Freundlich model satisfactory described adsorption curves, showing strong affinity of NOR to CFs, with sorption capacity (KF) between 8975.50 and 16638.13 for NOR. The adsorption capacities of NOR decreased with the particle size increasing from CFs to PFs. In addition, composite CFs showed excellent adsorption capacity, which was mainly attributed to the larger specific surface area of composite CFs and electronegativity and numerous oxygen-containing functional groups on the surfaces of the complexes, and electrostatic attraction, hydrogen bond and cation exchange could dominate the NOR adsorption onto the composite CFs. The best pH value under adsorption condition of composite CFs varied from weakly acidic to neutral with the increase of load amount of humic and fulvic acids on the surface of inorganic particles. The adsorption decreased with higher cation strength, larger cation radius and higher cation valence, which depended on the surface charge of colloids and the molecular shape of NOR. These results provided insight into the interfacial behaviors of NOR on the surfaces of natural colloids and promoted the understanding of the migration and transport of antibiotics in environmental systems.
Collapse
Affiliation(s)
- Dengmiao Cheng
- Research Center for Eco-Environmental Engineering, Dongguan University of Technology, Dongguan, 523808, PR China
| | - Jianyu Chen
- Research Center for Eco-Environmental Engineering, Dongguan University of Technology, Dongguan, 523808, PR China
| | - Jing Wang
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing, 100875, PR China
| | - Xinhui Liu
- Research and Development Center for Watershed Environmental Eco-Engineering, Beijing Normal University, Zhuhai, 519087, PR China
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing, 100875, PR China
| |
Collapse
|
3
|
Insights into the adsorption performance and mechanism of Cr(VI) onto porous nanocomposite prepared from gossans and modified coal interface: Steric, energetic, and thermodynamic parameters interpretations. Chin J Chem Eng 2023. [DOI: 10.1016/j.cjche.2023.02.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/09/2023]
|
4
|
Al-kroom H, Abdel-Gawwad HA, Abd Elrahman M, Abdel-Aleem S, Saad Ahmed M, Salama YF, Qaysi S, Techman M, Seliem MK, Youssf O. Utilization of Foamed Glass as an Effective Adsorbent for Methylene Blue: Insights into Physicochemical Properties and Theoretical Treatment. MATERIALS (BASEL, SWITZERLAND) 2023; 16:1412. [PMID: 36837042 PMCID: PMC9961413 DOI: 10.3390/ma16041412] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Revised: 01/28/2023] [Accepted: 02/02/2023] [Indexed: 06/18/2023]
Abstract
This study reports a potential approach for the valorization of glass waste (GW) that is mainly composed of amorphous silica to prepare lightweight foamed glass (FG). The preparation of FG was achieved by mixing sodium hydroxide with GW powder followed by sintering at a temperature of 800 °C. As-synthesized FG was characterized and applied as an effective adsorbent for the removal of hazardous organic water contaminants, in particular, methylene blue (MB) dye. FG exhibited porosity of 91%, bulk density of 0.65 g/cm3, compressive strength of 4 MPa, and thermal conductivity of 0.27 W/m·K. Theoretical treatment indicated that a monolayer model with one energy site was the best in fitting the removal of MB molecules. The number of MB molecules per active site (n) ranged from 2.20 to 1.70, suggesting vertical orientation and a multi-molecular adsorption mechanism. The density of FG receptor sites (DM) increased with the temperature, and this parameter played a vital role in the adsorption process. The adsorption capacity (Qsat) increased from 255.11 to 305.58 mg/g, which signifies endothermic interactions. MB adsorption on FG was controlled by physical forces such as electrostatic interactions (i.e., the adsorption energies were <20 kJ/mol). The results of this study prove the feasibility of glass waste as an effective and low-cost adsorbent for water remediation.
Collapse
Affiliation(s)
- Hussein Al-kroom
- Department of Civil Engineering, School of Engineering, The University of Jordan, Amman 11942, Jordan
| | - Hamdy A. Abdel-Gawwad
- Housing and Building National Research Center (HBRC), Raw Building Materials and Processing Technology Research Institute, Cairo 12311, Egypt
| | | | - Saleh Abdel-Aleem
- Chemistry Department, Faculty of Science, Fayoum University, Fayoum 63514, Egypt
| | - Mohamed Saad Ahmed
- Geology and Geophysics Department, College of Science, King Saud University, Riyadh 11362, Saudi Arabia
| | - Yasser F. Salama
- Geology Department, Faculty of Science, Beni-Suef University, Beni-Suef 62521, Egypt
| | - Saleh Qaysi
- Geology and Geophysics Department, College of Science, King Saud University, Riyadh 11362, Saudi Arabia
| | - Mateusz Techman
- Faculty of Civil and Environmental Engineering, West Pomeranian University of Technology in Szczecin, 70310 Szczecin, Poland
| | - Moaaz K. Seliem
- Faculty of Earth Science, Beni-Suef University, Beni-Suef 62521, Egypt
| | - Osama Youssf
- Structural Engineering Department, Mansoura University, Mansoura 35516, Egypt
| |
Collapse
|
5
|
El Amri A, Kadiri L, Hsissou R, Lebkiri A, Wardighi Z, Rifi EH, Lebkiri A. Investigation of Typha Latifolia (TL) as potential biosorbent for removal of the methyl orange anionic dye in the aqueous solution. Kinetic and DFT approaches. J Mol Struct 2023. [DOI: 10.1016/j.molstruc.2022.134098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
|
6
|
Elgamal AM, Abd El‐Ghany NA, Saad GR. Highly reactive adsorbent based on carboxymethyl xanthan gum‐g‐poly(4‐vinylpyridine) copolymer for the potential removal of Acid Orange 10 dye and Cr(
VI
) ions for water treatment. J Appl Polym Sci 2022. [DOI: 10.1002/app.53179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Ahmed M. Elgamal
- Chemistry Department, Faculty of Science Cairo University Cairo Egypt
| | | | - Gamal R. Saad
- Chemistry Department, Faculty of Science Cairo University Cairo Egypt
| |
Collapse
|
7
|
Effective removal of Cr(VI) and methyl orange by nano magnetite loaded starch/muscovite biocomposite: Characterization, experiments, advanced modeling, and physicochemical parameters interpretation. Int J Biol Macromol 2022; 224:1052-1064. [DOI: 10.1016/j.ijbiomac.2022.10.190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Revised: 10/02/2022] [Accepted: 10/20/2022] [Indexed: 11/05/2022]
|
8
|
Tahari N, de Hoyos-Martinez PL, Izaguirre N, Houwaida N, Abderrabba M, Ayadi S, Labidi J. Preparation of chitosan/tannin and montmorillonite films as adsorbents for Methyl Orange dye removal. Int J Biol Macromol 2022; 210:94-106. [PMID: 35525495 DOI: 10.1016/j.ijbiomac.2022.04.231] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2021] [Revised: 04/03/2022] [Accepted: 04/30/2022] [Indexed: 11/29/2022]
Abstract
A series of novel chitosan/tannin/montmorillonite (Cs/Tn/MMT) films were synthesised by loading different (from 0.2 to 0.5 wt%) and MMT (from 0.5 to 1.5 wt%) ratios, to be used as promising low-cost biosorbents for methyl orange (MO) removal from aqueous media. The prepared films were characterised using different techniques such as x-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), water contact angle, optical properties, colourimetric measurement, porosity, swelling and thickness. The effects of various parameters, i.e. initial MO concentration, adsorbent dose, pH and temperature, were studied. The Cs/Tn0.2/MMT1 film showed a high removal efficiency of 95.62% and maximum adsorption capacity of 57.37 mg/g under the optimum adsorption conditions (initial methyl orange concentration 60 mg/L, pH 7 and 25 °C). The adsorption kinetic followed the pseudo second order kinetic model and the experimental data were a good fit for the Langmuir isotherm indicating a homogeneous and monolayer adsorption process. The thermodynamic parameters suggested physical adsorption and exothermic behaviour. Consequently, Cs/Tn/MMT films showed effective potential for the uptake of anionic dyes.
Collapse
Affiliation(s)
- Nadia Tahari
- University of Tunis El Manar, Faculty of Sciences of Tunis, B.P: 248, El Manar II, 2092 Tunis, Tunisia; Laboratory of Materials, Molecules and Applications, IPEST, Preparatory Institute of Scientific and Technical Studies of Tunis, University of Carthage, Sidi Bou Said road, B. P.512070, La Marsa, Tunisia; Biorefinery Processes Research Group, Department of Chemical and Environmental Engineering, University of the Basque Country (UPV/EHU), Plaza. Europa1, 20018 Donostia-San Sebastian, Spain
| | - Pedro L de Hoyos-Martinez
- Biorefinery Processes Research Group, Department of Chemical and Environmental Engineering, University of the Basque Country (UPV/EHU), Plaza. Europa1, 20018 Donostia-San Sebastian, Spain
| | - Nagore Izaguirre
- Biorefinery Processes Research Group, Department of Chemical and Environmental Engineering, University of the Basque Country (UPV/EHU), Plaza. Europa1, 20018 Donostia-San Sebastian, Spain
| | - Nefzi Houwaida
- University of Tunis El Manar, Faculty of Sciences of Tunis, B.P: 248, El Manar II, 2092 Tunis, Tunisia; Laboratory of Materials, Molecules and Applications, IPEST, Preparatory Institute of Scientific and Technical Studies of Tunis, University of Carthage, Sidi Bou Said road, B. P.512070, La Marsa, Tunisia; Biorefinery Processes Research Group, Department of Chemical and Environmental Engineering, University of the Basque Country (UPV/EHU), Plaza. Europa1, 20018 Donostia-San Sebastian, Spain
| | - Manef Abderrabba
- Laboratory of Materials, Molecules and Applications, IPEST, Preparatory Institute of Scientific and Technical Studies of Tunis, University of Carthage, Sidi Bou Said road, B. P.512070, La Marsa, Tunisia
| | - Sameh Ayadi
- Laboratory of Materials, Treatment and Analysis, INRAP, Technopôle Sidi-Thabet, Tunis 2020, Tunisia
| | - Jalel Labidi
- Biorefinery Processes Research Group, Department of Chemical and Environmental Engineering, University of the Basque Country (UPV/EHU), Plaza. Europa1, 20018 Donostia-San Sebastian, Spain.
| |
Collapse
|
9
|
Ahmed IA, Badawi M, Bonilla-Petriciolet A, Lima EC, Seliem MK, Mobarak M. Insights Into the Mn(VII) and Cr(VI) Adsorption Mechanisms on Purified Diatomite/MCM-41 Composite: Experimental Study and Statistical Physics Analysis. Front Chem 2022; 9:814431. [PMID: 35211459 PMCID: PMC8861454 DOI: 10.3389/fchem.2021.814431] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2021] [Accepted: 12/14/2021] [Indexed: 11/13/2022] Open
Abstract
In this study, a purified diatomite (PD) with a concentration of diatom frustules more than 92% SiO2 was utilized to synthesize a composite of MCM-41 silica under hydrothermal conditions. The as-synthesized PD/MCM-41 composite was characterized and tested as an adsorbent for the removal of Cr(VI) and Mn(VII) ions from aqueous solution. Results of X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and Fourier-transform infrared spectroscopy (FTIR) revealed that the diatom frustules of the PD were coated with MCM-41 mesoporous silica. Experimental isotherms of Cr(VI) and Mn(VII) adsorption were fitted to classical and advanced statistical physics models at 25°C–55°C and pH 3. The Langmuir model estimated monolayer adsorption capacities ranging from 144.1 to 162.2 mg/g for Cr(VI) and 166.2 to 177.0 mg/g for Mn(VII), which improved with increasing the solution temperature. Steric and energetic parameters obtained from a monolayer adsorption model with one adsorption site was utilized to explain the adsorption mechanism at a microscopic level. The number of Cr(VI) and Mn(VII) ions adsorbed on PD/MCM-41 active site (n) were 1.25–1.27 for Cr(VI) and 1.27–1.32 for Mn(VII), thus suggesting multi-interaction mechanisms. The density of PD/MCM-41 active sites (DM) was a key parameter to explain the adsorption of these heavy metals. The adsorbed quantities were maximum at 55°C, thus obtaining 102.8 and 110.7 mg/g for Cr(VI) and Mn(VII), respectively. Cr(VI) and Mn(VII) adsorption energies ranged from 18.48 to 26.70 kJ/mol and corresponded to an endothermic adsorption with physical forces. Entropy, free enthalpy, and internal energy associated to the adsorption of Cr(VI) and Mn(VII) ions were calculated, thus indicating that the removal of these pollutants was spontaneous. Overall, this article offers new interpretations for the Cr(VI) and Mn(VII) adsorption mechanisms on PD/MCM-41 composite, which are relevant to contribute to the development of effective water treatment processes.
Collapse
Affiliation(s)
- Inas A. Ahmed
- Department of Chemistry, Faculty of Science, King Khalid University, Abha, Saudi Arabia
| | - Michael Badawi
- Laboratoire de Physique et Chimie Théoriques, UMR 7019—CNRS, Université de Lorraine, Nancy, France
- *Correspondence: Michael Badawi, ; Moaaz K. Seliem,
| | | | - Eder C. Lima
- Postgraduate Program in Mine, Metallurgical and Materials Engineering (PPGE3M), School of Engineering, Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
- Institute of Chemistry, Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
| | - Moaaz K. Seliem
- Faculty of Earth Science, Beni-Suef University, Beni-Suef, Egypt
- *Correspondence: Michael Badawi, ; Moaaz K. Seliem,
| | - Mohamed Mobarak
- Physics Department, Faculty of Science, Beni-Suef University, Beni-Suef, Egypt
| |
Collapse
|
10
|
Outstanding Performance of a New Exfoliated Clay Impregnated with Rutile TiO2 Nanoparticles Composite for Dyes Adsorption: Experimental and Theoretical Studies. COATINGS 2021. [DOI: 10.3390/coatings12010022] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Pure rutile TiO2 nanoparticles (Rt) were combined with exfoliated black clay (BC) to prepare a new composite for water decontamination, in particular, for the uptake of methylene blue (MB) and methyl orange (MO) dyes. The as-prepared Rt/BC was characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and Field emission scanning electron microscopy (FESEM) techniques, and the dyes’ adsorption isotherms at three temperatures (i.e., 25, 40, and 50 °C) were studied. The results indicated that Rt/BC displayed a high removal performance for MO (96.7%) and MB (91.4%) at pH 3.0 and 8.0, respectively. Adsorption data of MB and MO were adjusted by a double layer model at all temperatures. The theoretical parameters of this statistical physics model were interpreted to understand the MO and MB adsorption mechanisms at the molecular level. The removed molecules per active site (n) of Rt/BC ranged from 1.12 to 1.29 for MB and 1.47 to 1.85 for MO, thus representing parallel orientation and multi-interactions mechanisms (i.e., van der Waals forces, hydrogen bonding, and electrostatic interactions were involved). The Rt/BC composite had a density of surface adsorption sites of 100 mg/g. The aggregation of MO molecules was high and increased their adsorption capacities (Qsat = 294–370 mg/g) compared to that of MB (Qsat = 214–249 mg/g). Adsorption energies were 9.70–20.15 kJ/mol, and these values indicated that MO and MB adsorption processes were endothermic and occurred via physical interactions. Overall, the low cost, high regeneration performance, and stability of Rt/BC support its application as a promising adsorbent for organic pollutants from wastewaters.
Collapse
|
11
|
Yang HR, Li SS, Yang C, An QD, Zhai SR, Xiao ZY. Bi-layered hollow amphoteric composites: Rational construction and ultra-efficient sorption performance for anionic Cr(VI) and cationic Cu(II) ions. J Colloid Interface Sci 2021; 607:556-567. [PMID: 34520903 DOI: 10.1016/j.jcis.2021.08.197] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Revised: 08/27/2021] [Accepted: 08/29/2021] [Indexed: 12/17/2022]
Abstract
Here, we have developed a novel bilayer hollow amphiphilic biosorbent (BHAB-3) with large adsorption capacity, rapid adsorption kinetics, and cost-effective for the removal of Cr(VI) and Cu(II) from aqueous solutions. The synthesis was based on the clever use of freeze-drying to fix the structure, secondary modification of the carboxymethyl cellulose microspheres with polyethyleneimine and cross-linking by glutaraldehyde. The consequences of pH, initial concentration, contact time and temperature on adsorption were investigated. The Langmuir model fits showed that the maximum adsorption capacities of the two target heavy metal ions reached 835.91 and 294.79 mg/g, respectively. Moreover, BHAB-3 was characterized by SEM, FT-IR, TGA, and XPS synergistically, showing that it exhibits a strong complexation ability for Cu(II) and a strong electrostatic effect for Cr(VI). Adsorption and desorption experiments showed only a slight decrease in the adsorption capacity of the BHAB-3 for Cr(VI) and Cu(II) ions after 5 and 26 cycles, respectively. Given the excellent properties of this adsorbent, it is a promising candidate for heavy metal ion removal.
Collapse
Affiliation(s)
- Hua-Rong Yang
- Liaoning Key Laboratory of Lignocellulosic Chemistry and Biomaterials, College of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, China
| | - Shan-Shan Li
- Jinxi Research Institute of Chemical Industry Company Limited, Huludao 125000, China
| | - Chen Yang
- Liaoning Key Laboratory of Lignocellulosic Chemistry and Biomaterials, College of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, China
| | - Qing-Da An
- Liaoning Key Laboratory of Lignocellulosic Chemistry and Biomaterials, College of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, China.
| | - Shang-Ru Zhai
- Liaoning Key Laboratory of Lignocellulosic Chemistry and Biomaterials, College of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, China.
| | - Zuo-Yi Xiao
- Liaoning Key Laboratory of Lignocellulosic Chemistry and Biomaterials, College of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, China
| |
Collapse
|
12
|
ABBOU B, LEBKİRİ İ, OUADDARI H, ELKHATTABİ O, HABSAOUI A, LEBKIRI A, RIFI EH. Kinetic and thermodynamic study on adsorption of cadmium from aqueous solutions using natural clay. JOURNAL OF THE TURKISH CHEMICAL SOCIETY, SECTION A: CHEMISTRY 2021. [DOI: 10.18596/jotcsa.882016] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
|
13
|
Barakat M, Kumar R, Lima EC, Seliem MK. Facile synthesis of muscovite–supported Fe3O4 nanoparticles as an adsorbent and heterogeneous catalyst for effective removal of methyl orange: Characterisation, modelling, and mechanism. J Taiwan Inst Chem Eng 2021. [DOI: 10.1016/j.jtice.2021.01.025] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
|
14
|
Wu L, Liu J, Liu Y, Huang R, Tang N, Wang X, Hu L. In situ growth of Fe 3O 4 on montmorillonite surface and its removal of anionic pollutants. RSC Adv 2021; 11:33399-33407. [PMID: 35497563 PMCID: PMC9042274 DOI: 10.1039/d1ra06318a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Accepted: 09/29/2021] [Indexed: 12/02/2022] Open
Abstract
An environmentally functional material for the efficient removal of anionic pollutants in water was prepared for our study. Montmorillonite (M) was modified by hydrochloric acid (HCl) and cetyltrimethylammonium bromide (CTAB). Fe3O4 was grown in situ to prepare modified Fe3O4/montmorillonite (AC Fe3O4–Mt) composites. The number of hydroxyl sites on the surface of Mt and the surface tension were increased by HCl and CTAB modification, respectively, which enabled higher Fe3O4 surface growth, promoting the multi-directional crystallisation of Fe3O4 and improving reactivity. The XRD results show that Fe3O4 grows on the surface of Mt and has good crystallinity and high purity, meaning that AC Fe3O4–Mt is more reactive than Fe3O4. When AC Fe3O4–Mt is used to remove anionic pollutants in water, the removal effect under the synergistic action of adsorption-redox is significantly improved, and the maximum removable quantities of Cr(vi) and 2-4-dichlorophenol can reach 41.57 mg g−1 and 239.33 mg g−1, respectively. AC Fe3O4–Mt is a high efficiency and environmentally functional material with green environmental protection, which can be used in the field of sewage treatment. An environmentally functional material for the efficient removal of anionic pollutants in water, was prepared for our study.![]()
Collapse
Affiliation(s)
- Limei Wu
- School of Materials Science and Engineering, Shenyang Jianzhu University, Shenyang 110168, China
| | - Jingwen Liu
- School of Materials Science and Engineering, Shenyang Jianzhu University, Shenyang 110168, China
| | - Yan Liu
- School of Materials Science and Engineering, Shenyang Jianzhu University, Shenyang 110168, China
| | - Ritong Huang
- School of Materials Science and Engineering, Shenyang Jianzhu University, Shenyang 110168, China
| | - Ning Tang
- School of Materials Science and Engineering, Shenyang Jianzhu University, Shenyang 110168, China
| | - Xiaolong Wang
- School of Mechanical Engineering, Shenyang Jianzhu University, Shenyang 110168, China
| | - Ling Hu
- Planning and Finance Division, Shenyang Jianzhu University, Shenyang 110168, China
| |
Collapse
|
15
|
Kinetic studies on adsorption behavior of methyl orange using modified halloysite, as an eco-friendly adsorbent. SN APPLIED SCIENCES 2020. [DOI: 10.1007/s42452-020-03799-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022] Open
|
16
|
Barakat MA, Selim AQ, Mobarak M, Kumar R, Anastopoulos I, Giannakoudakis D, Bonilla-Petriciolet A, Mohamed EA, Seliem MK, Komarneni S. Experimental and Theoretical Studies of Methyl Orange Uptake by Mn-Rich Synthetic Mica: Insights into Manganese Role in Adsorption and Selectivity. NANOMATERIALS 2020; 10:nano10081464. [PMID: 32722597 PMCID: PMC7466402 DOI: 10.3390/nano10081464] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Revised: 07/12/2020] [Accepted: 07/24/2020] [Indexed: 12/25/2022]
Abstract
Manganese–containing mica (Mn–mica) was synthesized at 200 °C/96 h using Mn–carbonate, Al–nitrate, silicic acid, and high KOH concentration under hydrothermal conditions. Mn–mica was characterized and tested as a new adsorbent for the removal of methyl orange (MO) dye from aqueous solutions. Compared to naturally occurring mica, the Mn–mica with manganese in the octahedral sheet resulted in enhanced MO uptake by four times at pH 3.0 and 25 °C. The pseudo–second order equation for kinetics and Freundlich equation for adsorption isotherm fitted well to the experimental data at all adsorption temperatures (i.e., 25, 40 and 55 °C). The decrease of Langmuir uptake capacity from 107.3 to 92.76 mg·g−1 within the temperature range of 25–55 °C suggested that MO adsorption is an exothermic process. The role of manganese in MO selectivity and the adsorption mechanism was analyzed via the physicochemical parameters of a multilayer adsorption model. The aggregated number of MO ions per Mn–mica active site (n) was superior to unity at all temperatures signifying a vertical geometry and a mechanism of multi–interactions. The active sites number (DM) of Mn–mica and the total removed MO layers (Nt) slightly changed with temperature. The decrease in the MO adsorption capacities (Qsat = n·DM·Nt) from 190.44 to 140.33 mg·g−1 in the temperature range of 25–55 °C was mainly controlled by the n parameter. The results of adsorption energies revealed that MO uptake was an exothermic (i.e., negative ΔE values) and a physisorption process (ΔE < 40 kJ mol −1). Accordingly, the adsorption of MO onto Mn–mica was governed by the number of active sites and the adsorption energy. This study offers insights into the manganese control of the interactions between MO ions and Mn–mica active sites.
Collapse
Affiliation(s)
- Mohamed A. Barakat
- Department of Environmental Sciences, Faculty of Meteorology, Environment and Arid Land Agriculture, King Abdulaziz University, Jeddah 21589, Saudi Arabia; (M.A.B.); (R.K.)
- Central Metallurgical R & D Institute, Cairo 11421, Egypt
| | - Ali Q. Selim
- Faculty of Earth Science, Beni-Suef University, Beni Suef 62511, Egypt;
| | - Mohamed Mobarak
- Physics Department, Faculty of Science, Beni-Suef University, Beni Suef 62511, Egypt;
| | - Rajeev Kumar
- Department of Environmental Sciences, Faculty of Meteorology, Environment and Arid Land Agriculture, King Abdulaziz University, Jeddah 21589, Saudi Arabia; (M.A.B.); (R.K.)
| | - Ioannis Anastopoulos
- Department of Chemistry, University of Cyprus, P.O. Box 20537, Nicosia Cy-1678, Cyprus;
| | - Dimitrios Giannakoudakis
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland;
| | - Adrián Bonilla-Petriciolet
- Departamento de Ingeniería Química, Instituto Tecnológico de Aguascalientes, Aguascalientes 20256, Mexico;
| | - Essam A. Mohamed
- Faculty of Earth Science, Beni-Suef University, Beni Suef 62511, Egypt;
- Correspondence: (E.A.M.); (M.K.S.)
| | - Moaaz K. Seliem
- Faculty of Earth Science, Beni-Suef University, Beni Suef 62511, Egypt;
- Correspondence: (E.A.M.); (M.K.S.)
| | - Sridhar Komarneni
- Department of Ecosystem Science and Management and Materials Research Institute, 204 Energy and the Environment Laboratory, The Pennsylvania State University, University Park, PA 16802, USA;
| |
Collapse
|
17
|
Barakat MAE, Kumar R, Seliem MK, Selim AQ, Mobarak M, Anastopoulos I, Giannakoudakis D, Barczak M, Bonilla-Petriciolet A, Mohamed EA. Exfoliated Clay Decorated with Magnetic Iron Nanoparticles for Crystal Violet Adsorption: Modeling and Physicochemical Interpretation. NANOMATERIALS 2020; 10:nano10081454. [PMID: 32722342 PMCID: PMC7466639 DOI: 10.3390/nano10081454] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/12/2020] [Revised: 07/18/2020] [Accepted: 07/19/2020] [Indexed: 02/06/2023]
Abstract
Surfactant–modified exfoliated Fayum clay (CTAB–EC) obtained after chemical treatment with a CTAB/H2O2 solution was further decorated with magnetic Fe3O4 nanoparticles (MNP). The final nanocomposite (MNP/CTAB–EC) was characterized by XRD, SEM, FTIR, TEM and its adsorptive capability against a model cationic dye, crystal violet (CV), was evaluated. A comparison of the adsorption performance of the raw clay and its modified counterparts using H2O2, CTAB, CTAB/H2O2 or MNP indicated that the adsorption capacity of MNP/CTAB–EC was the highest for CV removal at pH 8.0. The pseudo‒second order for the kinetics and Freundlich model for adsorption equilibrium fitted well the CV removal experimental data at all tested temperatures (25, 40 and 55 °C). The enhancement of the Langmuir adsorption capacity from 447.1 to 499.4 mg g−1 with increasing the temperature from 25 to 55 °C revealed an endothermic nature of the removal process. The interactions between CV and MNP/CTAB–EC were interpreted using advanced statistical physics models (ASPM) in order to elucidate the adsorption mechanism. Multilayer model fitted the adsorption process and therefore, the steric and energetic factors that impacted the CV adsorption were also interpreted using this model. The aggregated number of CV molecules per MNP/CTAB–EC active site (n) was more than unity at all temperatures, representing thus a vertical adsorption orientation and a multi‒interactions mechanism. It was determined that the increase of CV uptake with temperature was mainly controlled by the increase of the number of active sites (NM). Calculated adsorption energies (ΔE) revealed that CV removal was an endothermic and a physisorption process (ΔE < 40 kJ mol −1). MNP/CTAB–EC was magnetically separated, regenerated by NaOH, and reused without significant decrease in its adsorption efficiency, supporting a prosperity of its utilization as an effective adsorbent against hazardous dyes from wastewaters.
Collapse
Affiliation(s)
- Mohamed Abou Elfetouh Barakat
- Department of Environmental Sciences, King Abdulaziz University, Jeddah 21589, Saudi Arabia;
- Central Metallurgical R & D Institute, Helwan 11421, Cairo, Egypt
- Correspondence: or (M.A.E.B.); (M.K.S.)
| | - Rajeev Kumar
- Department of Environmental Sciences, King Abdulaziz University, Jeddah 21589, Saudi Arabia;
| | - Moaaz Korany Seliem
- Faculty of Earth Science, Beni-Suef University, Beni-Suef 62511, Egypt; (A.Q.S.); (E.A.M.)
- Correspondence: or (M.A.E.B.); (M.K.S.)
| | - Ali Qurany Selim
- Faculty of Earth Science, Beni-Suef University, Beni-Suef 62511, Egypt; (A.Q.S.); (E.A.M.)
| | - Mohamed Mobarak
- Physics Department, Faculty of Science, Beni-Suef University, Beni-Suef 62511, Egypt;
| | - Ioannis Anastopoulos
- Department of Chemistry, University of Cyprus, P.O. Box 20537, Nicosia Cy-1678, Cyprus;
| | - Dimitrios Giannakoudakis
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland;
| | - Mariusz Barczak
- Department of Theoretical Chemistry, Institute of Chemical Sciences, Faculty of Chemistry Maria Curie Skłodowska University in Lublin, 20-031 Lublin, Poland;
| | - Adrián Bonilla-Petriciolet
- Departamento de Ingeniería Química, Instituto Tecnológico de Aguascalientes, Aguascalientes 20256, Mexico;
| | | |
Collapse
|
18
|
Novel hybrid multifunctional composite of chitosan and altered basalt for barium adsorption: Experimental and theoretical studies. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2020.124613] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
|
19
|
Noraee Z, Jafari A, Ghaderpoori M, Kamarehie B, Ghaderpoury A. Use of metal-organic framework to remove chromium (VI) from aqueous solutions. JOURNAL OF ENVIRONMENTAL HEALTH SCIENCE & ENGINEERING 2019; 17:701-709. [PMID: 32030144 PMCID: PMC6985398 DOI: 10.1007/s40201-019-00385-8] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2018] [Accepted: 06/10/2019] [Indexed: 05/25/2023]
Abstract
Chromium is one of the heavy metals found in industrial wastewaters, which have highly toxic to human beings and the environment. Exposure with it may cause some hazard diseases including stomach ulcers, liver, vomiting, kidney and nerve tissue damage, cancer in the lungs, and eventually death. The main objective of this study was to evaluate the efficiency of Uio-66 and ZIF-8 in removing chromium from aqueous solutions. For the synthesis of Uio-66 and ZIF-8, hydrothermal and sol-gel methods were used, respectively. The prepared Uio-66 and ZIF-8 were identified by FTIR, XRD, FE-SEM, EDX, and BET. All experiments were done in batch conditions. Uio-66 and ZIF-8 efficiency for chromium adsorption from aqueous solutions were investigated by variables like initial concentration (10-200 mg/l), pH (3 to 11), Uio-66 and ZIF-8 dosage (0.2 to 1 g/l) and contact time (45 min). The FE-SEM image showed that the sizes of Uio-66 crystals were between 140 and 280 nm. The specific surface area and total pore volume of the prepared Uio-66 and ZIF-8 were 800 m2/g, 0.45 m3/g, 1050 m2/g, and 0.57 m3/g, respectively. The results show chromium adsorption has increased in acid conditions. Equilibrium dosage for Uio-66 and ZIF-8 was 0.4 g/l and 0.6 g/l, respectively. Adsorption equilibrium was performed after 60 min and after this time, chromium adsorption did not significantly change. The study results showed that the experimental data obtained fitted with kinetic model pseudo-order- reaction and isotherm model of Langmuir.
Collapse
Affiliation(s)
- Zahra Noraee
- Department of Environmental Health Engineering, School of Health and Nutrition, Lorestan University of Medical Sciences, Khorramabad, Iran
| | - Ali Jafari
- Department of Environmental Health Engineering, School of Health and Nutrition, Lorestan University of Medical Sciences, Khorramabad, Iran
| | - Mansour Ghaderpoori
- Department of Environmental Health Engineering, School of Health and Nutrition, Lorestan University of Medical Sciences, Khorramabad, Iran
- Nutritional Health Research Center, Lorestan University of Medical Sciences, Khorramabad, Iran
| | - Bahram Kamarehie
- Department of Environmental Health Engineering, School of Health and Nutrition, Lorestan University of Medical Sciences, Khorramabad, Iran
| | - Afshin Ghaderpoury
- Student Research Committee, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| |
Collapse
|
20
|
Cr(VI) uptake by a new adsorbent of CTAB–modified carbonized coal: Experimental and advanced statistical physics studies. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.111676] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
21
|
Tong X, Li Y, Zhang F, Chen X, Zhao Y, Hu B, Zhang X. Adsorption of 17β-estradiol onto humic-mineral complexes and effects of temperature, pH, and bisphenol A on the adsorption process. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2019; 254:112924. [PMID: 31362254 DOI: 10.1016/j.envpol.2019.07.092] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Revised: 06/28/2019] [Accepted: 07/18/2019] [Indexed: 06/10/2023]
Abstract
The long-term use of animal manure in agriculture has resulted in estrogen pollution, which poses risks to facility vegetable soils. Owing to the complex soil composition, estrogen may exhibit a variety of behaviors at the water/soil interface. This study demonstrated the role of humic acid (HA) on the 17β-estradiol (E2) adsorption by clay minerals (montmorillonite, kaolinite, and hematite). The interfacial behaviors were investigated using adsorption kinetics and isotherms data. Then, the effects of temperature, pH, and bisphenol A (BPA) on the interactions between humic-mineral complexes and E2 were explored. The adsorption of E2 is an exothermic and spontaneous process, and the addition of HA to minerals significantly promoted their E2 adsorption capacities. Higher pH levels (>10) and the presence of BPA decreased the adsorption capacities of minerals and mineral complexes for E2. Moreover, intercalation, hydrophobic partitioning, π-π interactions and hydrogen bonding could dominate the E2 adsorption onto complexes. These results provided insight into the interfacial behaviors of E2 on the surfaces of humic-mineral complexes and promoted the understanding of the migration and transport of estrogens in soils.
Collapse
Affiliation(s)
- Xin Tong
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China
| | - Yanxia Li
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China.
| | - Fengsong Zhang
- Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, 100101 Beijing, China
| | - Xingcai Chen
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China
| | - Yan Zhao
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China
| | - Boyang Hu
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China
| | - Xuelian Zhang
- Beijing Soil and Fertilizer Extension Service Station, Beijing 100029, China
| |
Collapse
|
22
|
He Y, Zhang L, An X, Wan G, Zhu W, Luo Y. Enhanced fluoride removal from water by rare earth (La and Ce) modified alumina: Adsorption isotherms, kinetics, thermodynamics and mechanism. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 688:184-198. [PMID: 31229816 DOI: 10.1016/j.scitotenv.2019.06.175] [Citation(s) in RCA: 78] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2019] [Revised: 05/22/2019] [Accepted: 06/11/2019] [Indexed: 05/25/2023]
Abstract
The removal of F- from aqueous solution using lanthanum and cerium modified mesoporous alumina (La/MA and Ce/MA) was studied, and characteration of the adsorbents by XRD, BET, XRF, FTIR, TEM, XPS and the pHZPC measurements were carried out. The adsorption was investigated in both batch and column adsorption systems. Batch experimental results showed that adsorption capacities of adsorbents were recorded in the following order: La/MA > Ce/MA > mesoporous alumina (MA). Besides, adsorption datas were fitted well by Sips isotherm model and Elovich kinetics model, and the maximum adsorption capacity of La/MA was 26.45 mg·g-1 in Sips model at the dosage of 2.0 g·L-1 and near neutral condition (pH = 6.0 ± 0.1). Moreover, thermodynamic parameters were illustrated that adsorption process of fluoride ion over La/MA was spontaneous and endothermic. In the adsorption process, the interaction between metal and fluoride, the adsorption capacity was increased due to form the bond of M···F (M = La or Ce). Furthermore, the influence of coexisted anions on F- removal was investigated, and it was indicated that removal efficiency was slightly affected by the presence of Cl- and NO3-, while SO42- and CO32- caused a sharp fall in removal efficiency. Column experiments results were indicated that time of break-through of La/MA was twice as much as that of MA.
Collapse
Affiliation(s)
- Yuxuan He
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, PR China
| | - Liming Zhang
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, PR China
| | - Xiao An
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, PR China
| | - Gengping Wan
- Research Center for Analysis and Measurement, Hainan University, Haikou 570228, PR China
| | - Wenjie Zhu
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, PR China
| | - Yongming Luo
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, PR China.
| |
Collapse
|
23
|
Rizzo C, Andrews JL, Steed JW, D'Anna F. Carbohydrate-supramolecular gels: Adsorbents for chromium(VI) removal from wastewater. J Colloid Interface Sci 2019; 548:184-196. [DOI: 10.1016/j.jcis.2019.04.034] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2019] [Revised: 04/09/2019] [Accepted: 04/11/2019] [Indexed: 01/14/2023]
|
24
|
Statistical physics modeling and interpretation of methyl orange adsorption on high–order mesoporous composite of MCM–48 silica with treated rice husk. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.04.116] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
25
|
Chen B, Chen S, Zhao H, Liu Y, Long F, Pan X. A versatile β-cyclodextrin and polyethyleneimine bi-functionalized magnetic nanoadsorbent for simultaneous capture of methyl orange and Pb(II) from complex wastewater. CHEMOSPHERE 2019; 216:605-616. [PMID: 30390591 DOI: 10.1016/j.chemosphere.2018.10.157] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Revised: 10/18/2018] [Accepted: 10/21/2018] [Indexed: 05/22/2023]
Abstract
Ascribing to their significant differences in physicochemical properties, it is extremely challenging to treat complex wastewater containing more than one class of pollutants via one-step treatment. Here, we focused on disposal of complex wastewater bearing organic dye and heavy metal by using adsorptive method. Thus, by combining the advantages of polyethyleneimine (PEI), β-cyclodextrin (β-CD) as well as Fe3O4 magnetic nanoparticles, a versatile β-CD and PEI bi-functionalized magnetic nanoadsorbent (Fe3O4-PEI/β-CD) with spatially separated sorption sites was successfully constructed for simultaneous capture of methyl orange (MO) and Pb(II) in complex wastewater. In this setting, β-CD cavities and positively charged N-containing groups of PEI were mainly responsible for removal of MO via host-guest inclusion and electrostatic attraction, respectively, and oxygen-bearing groups on the edge of β-CD as well as the free amino moieties in PEI acted as the active sites for Pb(II) uptake. In their individual mono-pollutant system, the adsorption processes can be better described via applying pseudo-second-order kinetic and Langmuir isotherm models. Interestingly, presence of MO in Pb(II)-MO binary system significantly promoted the uptake of Pb(II). But the coexisting Pb(II) had almost no effects on MO uptake. Such results demonstrated that both MO and Pb(II) could be simultaneously and synergistically removed by Fe3O4-PEI/β-CD through multiple mechanisms (such as electrostatic attraction, host-guest inclusion, chelating, etc.). Particularly, the excellent regeneration and stability make Fe3O4-PEI/β-CD an ideal integrative adsorbent for purification of actual wastewater contaminated by MO and Pb(II). Thus, this study provides some insights into designing a well-performed and easily recyclable adsorbent for simultaneous and synergetic capture of both organic and inorganic contaminants in complex wastewater.
Collapse
Affiliation(s)
- Bo Chen
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, PR China
| | - Sijiang Chen
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, PR China
| | - Huinan Zhao
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, PR China
| | - Yang Liu
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, PR China
| | - Fengxia Long
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, PR China
| | - Xuejun Pan
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, PR China.
| |
Collapse
|
26
|
Mobarak M, Mohamed EA, Selim AQ, Eissa M, Seliem MK. Experimental results and theoretical statistical modeling of malachite green adsorption onto MCM–41 silica/rice husk composite modified by beta radiation. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2018.09.132] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|