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Bahadi SA, Drmosh QA, Onaizi SA. Adsorptive removal of organic pollutants from aqueous solutions using novel GO/bentonite/MgFeAl-LTH nanocomposite. ENVIRONMENTAL RESEARCH 2024; 248:118218. [PMID: 38266892 DOI: 10.1016/j.envres.2024.118218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Revised: 01/05/2024] [Accepted: 01/14/2024] [Indexed: 01/26/2024]
Abstract
The contamination of water with organic pollutants such as dyes and phenols is a serious environmental problem, requiring effective treatment methods. In the present study, a novel nanocomposite was synthesized by intercalating graphene oxide and bentonite clay into MgFeAl-layered triple hydroxide (GO/BENT/LTH), which was characterized using different techniques. The adsorption efficacy of the GO/BENT/LTH nanocomposite was assessed via the removal of two harmful organic water pollutants, namely methyl orange (MO) and 2-nitrophenol (2NP). The obtained results revealed that the maximum adsorption capacities (qmax) of MO and 2NP reached 3106.3 and 2063.5 mg/g, respectively, demonstrating the excellent adsorption performance of the nanocomposite. Furthermore, this study examined the effects of contact time, initial MO and 2NP concentrations, pH, and temperature of the wastewater samples on the adsorptive removal of MO and 2NP by the GO/BENT/LTH nanocomposite. The pH, zeta potential, and FTIR investigations suggested the presence of more than one adsorption mechanism. Thermodynamic investigations elucidated the exothermic nature of the adsorption of MO and 2NP onto the GO/BENT/LTH nanocomposite, with MO adsorption being more sensitive to temperature change. Additionally, regeneration studies revealed a marginal loss in the MO and 2NP removal with the repetitive use of the GO/BENT/LTH nanocomposite, demonstrating its reusability. Overall, the findings of this study reveal the promise of the GO/BENT/LTH nanocomposite for effective water decontamination.
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Affiliation(s)
- Salem A Bahadi
- Department of Chemical Engineering, King Fahd University of Petroleum and Minerals, Dhahran 31216, Saudi Arabia
| | - Q A Drmosh
- Department of Materials Science and Engineering, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia; Interdisciplinary Research Center for Hydrogen and Energy Storage, King Fahd University of Petroleum and Minerals, Dhahran 31216, Saudi Arabia
| | - Sagheer A Onaizi
- Department of Chemical Engineering, King Fahd University of Petroleum and Minerals, Dhahran 31216, Saudi Arabia; Interdisciplinary Research Center for Hydrogen and Energy Storage, King Fahd University of Petroleum and Minerals, Dhahran 31216, Saudi Arabia.
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Fernández D, Abalde J, Torres E. The Biosorption Capacity of the Marine Microalga Phaeodactylum tricornutum for the Removal of Toluidine Blue from Seawater. TOXICS 2024; 12:277. [PMID: 38668500 PMCID: PMC11053973 DOI: 10.3390/toxics12040277] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2024] [Revised: 04/01/2024] [Accepted: 04/08/2024] [Indexed: 04/29/2024]
Abstract
A wide variety of dyes, such as toluidine blue (TB), are used daily for a multitude of purposes. After use, many of these compounds end up in aqueous effluents, reaching natural environments, including marine environments. The removal of these pollutants from marine environments must be considered a priority problem. The search for natural techniques, such as biosorption, is a preferred option to eliminate pollution from natural environments. However, biosorption studies in seawater are scarce. For this reason, the living biomass of the marine microalga Phaeodactylum tricornutum was studied to determine its ability to remove TB from seawater. The kinetics of the biosorption process, the isotherms, and the effect of light and pH were determined. This biomass showed a maximum TB removal capacity of 45 ± 2 mg g-1 in the presence of light. Light had a positive effect on the TB removal capacity of this living biomass. The best fitting kinetics was the pseudo-second order kinetics. The efficiency of the removal process increased with increasing pH. This removal was more effective at alkaline pH values. The results demonstrated the efficacy of P. tricornutum living biomass for the efficient removal of toluidine blue dye from seawater both in the presence and absence of light.
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Affiliation(s)
| | | | - Enrique Torres
- Laboratorio de Microbiología, Facultad de Ciencias, Universidade da Coruña, Campus de A Zapateira, 15071 A Coruña, Spain; (D.F.L.); (J.A.A.)
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Lujanienė G, Novikau R, Karalevičiūtė K, Pakštas V, Talaikis M, Levinskaitė L, Selskienė A, Selskis A, Mažeika J, Jokšas K. Chitosan-minerals-based composites for adsorption of caesium, cobalt and europium. JOURNAL OF HAZARDOUS MATERIALS 2024; 462:132747. [PMID: 37837775 DOI: 10.1016/j.jhazmat.2023.132747] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Revised: 09/18/2023] [Accepted: 10/07/2023] [Indexed: 10/16/2023]
Abstract
Currently, there is a growing interest in the use of natural materials in various fields of science, technology and environmental protection due to their availability, low-cost, non-toxicity and biodegradability. Chitosan, natural clay of local origin, montmorillonite, zeolite, cross-linking agents (epichlorohydrin, sodium tripolyphosphate, glutaraldehyde) and plasticisers (glycerol) were used to synthesise composites. The composites were characterised by attenuated total reflectance-Fourier transform infrared spectroscopy (ATR-FTIR), X-ray diffraction analysis (XRD) and scanning electron microscope (SEM), tested for their antibacterial activity and used in batch experiments to study the adsorption of caesium, cobalt and europium ions. The maximum capacities for adsorption of caesium, cobalt and europium on the composites were 1400 mg/g, 900 mg/g and 18 mg/g, respectively. The experimental data fit better the Langmuir isotherm model and indicate favourable monolayer adsorption of Cs+, Co2+ and Eu3+ at homogeneous sites of the composites. The experimental data were in better agreement with the pseudo-second-order non-linear kinetic model for most elements and adsorbents. Adaptive neuro-fuzzy inference system proved to be a practical tool with good performance and generalisation capability for predicting the adsorption capacity of composites for caesium, cobalt, and europium ions. It was found that the predicted data were very close to the experimental data.
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Affiliation(s)
- Galina Lujanienė
- Center for Physical Sciences and Technology (FTMC), Savanorių Str. 231, LT-02300 Vilnius, Lithuania.
| | - Raman Novikau
- Center for Physical Sciences and Technology (FTMC), Savanorių Str. 231, LT-02300 Vilnius, Lithuania
| | - Karolina Karalevičiūtė
- Center for Physical Sciences and Technology (FTMC), Savanorių Str. 231, LT-02300 Vilnius, Lithuania
| | - Vidas Pakštas
- Center for Physical Sciences and Technology (FTMC), Savanorių Str. 231, LT-02300 Vilnius, Lithuania
| | - Martynas Talaikis
- Center for Physical Sciences and Technology (FTMC), Savanorių Str. 231, LT-02300 Vilnius, Lithuania
| | | | - Aušra Selskienė
- Center for Physical Sciences and Technology (FTMC), Savanorių Str. 231, LT-02300 Vilnius, Lithuania
| | - Algirdas Selskis
- Center for Physical Sciences and Technology (FTMC), Savanorių Str. 231, LT-02300 Vilnius, Lithuania
| | - Jonas Mažeika
- Nature Research Centre, Akademijos Str. 2, LT-08412 Vilnius, Lithuania
| | - Kęstutis Jokšas
- Nature Research Centre, Akademijos Str. 2, LT-08412 Vilnius, Lithuania
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Islam MS, Roy H, Ahmed T, Firoz SH, Chang SX. Surface-modified graphene oxide-based composites for advanced sequestration of basic blue 41 from aqueous solution. CHEMOSPHERE 2023; 340:139827. [PMID: 37586493 DOI: 10.1016/j.chemosphere.2023.139827] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Revised: 08/11/2023] [Accepted: 08/13/2023] [Indexed: 08/18/2023]
Abstract
Advanced materials for the efficient treatment of textile wastewater need to be developed for the sustainable growth of the textile industry. In this study, graphene oxide (GO) was modified by the incorporation of natural clay (bentonite) and mixed metal oxide (copper-cobalt oxide) to produce GO-based binary and ternary composites. Two binary composites, GO/bentonite and GO/Cu-Co Ox (oxide), and one ternary composite, GO/bentonite/Cu-Co Ox, were characterized by Fourier transform-infrared spectroscopy (FTIR), scanning electron microscope (SEM), energy dispersive spectrometer (EDS) and Brunauer-Emmett-Teller (BET) analysis. The adsorption efficiency of these composites was evaluated against a cationic dye, Basic Blue 41 (BB41). The composites had several surface functional groups, and the ternary composite had tubular porous structures formed by the cross-linking of the bentonite and GO planes. The BET surface area of the ternary composite was 50% higher than that of the GO. The BB41 removals were 92, 89, 80, and 69% for GO/bentonite/Cu-Co oxide, GO/bentonite, GO and GO/Cu-Co oxide, respectively. The pseudo-2nd-order and intraparticle diffusion models best describe the kinetics results, indicating chemisorption and slow pore diffusion-controlled adsorption processes. The Langmuir isotherm-derived adsorption capacity of GO/bentonite/Cu-Co oxide was 351.1 mg/g, which was very close to the measured value. After five consecutive cycles, the ternary composite retained 90% BB41 removal efficiency compared to its 1st cycle. Electrostatic interaction and pore diffusion were predicted to be the controlling mechanisms for the adsorption of the BB41. The GO-based ternary composite can be a feasible and scalable adsorbent for BB41 in wastewater treatment.
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Affiliation(s)
- Md Shahinoor Islam
- Department of Chemical Engineering, Bangladesh University of Engineering and Technology, Dhaka 1000, Bangladesh.
| | - Hridoy Roy
- Department of Chemical Engineering, Bangladesh University of Engineering and Technology, Dhaka 1000, Bangladesh
| | - Tasnim Ahmed
- Department of Chemical Engineering, Bangladesh University of Engineering and Technology, Dhaka 1000, Bangladesh
| | - Shakhawat H Firoz
- Department of Chemistry, Bangladesh University of Engineering and Technology, Dhaka 1000, Bangladesh
| | - Scott X Chang
- Department of Renewable Resources, University of Alberta, Edmonton, Alberta, T6G 2E3, Canada.
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Simultaneous removal of Basic blue and Toluidine blue O dyes by Magnetic Fe3O4@polydopamine nanoparticle as an efficient adsorbent using derivative spectrophotometric determination and central composite design optimization. INORG CHEM COMMUN 2022. [DOI: 10.1016/j.inoche.2022.110203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Novikau R, Lujanienė G, Pakštas V, Talaikis M, Mažeika K, Drabavičius A, Naujokaitis A, Šemčuk S. Adsorption of caesium and cobalt ions on the muscovite mica clay-graphene oxide-γ-Fe 2O 3-Fe 3O 4 composite. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:74933-74950. [PMID: 35648351 DOI: 10.1007/s11356-022-21078-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Accepted: 05/20/2022] [Indexed: 06/15/2023]
Abstract
The muscovite mica clay-graphene oxide-maghemite-magnetite (γ-Fe2O3-Fe3O4) composite was first used for the adsorption of caesium(I) and cobalt(II). The presence of clay minerals, graphene oxide, maghemite, and magnetite was detected in the prepared composite by XRD, WD-XRF, Mössbauer spectroscopy, and ATR-FTIR. The SEM and TEM results show that the composite has a layered structure with irregularly shaped pores on the surface. It was found that the adsorption of ions depends on the initial concentration, pH (except for caesium), mass of adsorbent, temperature, and contact time. The maximum adsorption capacity for Cs(I) and Co(II) was 2286 mg/g and 652 mg/g, respectively, and was obtained at concentrations (Cs(I) = 12,630 mg/L; Co(II) = 3200 mg/L), adsorbent mass of 0.01 g, pH (Cs(I) = 7; Co(II) = 5), temperature of 20 ± 1 °C, and contact time of 24 h. The high adsorption capacity of the composite could be due to a diversity of functional groups, a large number of active sites or the multilayer adsorption of caesium and cobalt ions on the surface of the composite. The Freundlich, Langmuir isotherms, and the pseudo-second-order kinetic model better describe the adsorption of these ions on the composite. The adsorption was non-spontaneous endothermic for Cs(I) and spontaneous endothermic for Co(II). The proposed mechanism of adsorption of Cs and Co ions on the composite is complex and involves electrostatic interactions and ion exchange. The ANFIS model proved to be quite effective in predicting the adsorption of Cs(I) and Co(II), as shown by the obtained values of R2, MSE, SSE, and ARE.
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Affiliation(s)
- Raman Novikau
- Department of Environmental Research, State Research Institute Center for Physical Sciences and Technology, Savanoriu Ave. 231, 02300, Vilnius, Lithuania.
| | - Galina Lujanienė
- Department of Environmental Research, State Research Institute Center for Physical Sciences and Technology, Savanoriu Ave. 231, 02300, Vilnius, Lithuania
| | - Vidas Pakštas
- Department of Characterisation of Materials Structure, State Research Institute Center for Physical Sciences and Technology, Saulėtekio al. 3, 10257, Vilnius, Lithuania
| | - Martynas Talaikis
- Department of Organic Chemistry, State Research Institute Center for Physical Sciences and Technology, Saulėtekio al. 3, 10257, Vilnius, Lithuania
| | - Kęstutis Mažeika
- Department of Nuclear Research, State Research Institute Center for Physical Sciences and Technology, Savanoriu Ave. 231, 02300, Vilnius, Lithuania
| | - Audrius Drabavičius
- Department of Characterisation of Materials Structure, State Research Institute Center for Physical Sciences and Technology, Saulėtekio al. 3, 10257, Vilnius, Lithuania
| | - Arnas Naujokaitis
- Department of Characterisation of Materials Structure, State Research Institute Center for Physical Sciences and Technology, Saulėtekio al. 3, 10257, Vilnius, Lithuania
| | - Sergej Šemčuk
- Department of Environmental Research, State Research Institute Center for Physical Sciences and Technology, Savanoriu Ave. 231, 02300, Vilnius, Lithuania
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7
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Recent developments in the utilization of modified graphene oxide to adsorb dyes from water: A review. J IND ENG CHEM 2022. [DOI: 10.1016/j.jiec.2022.10.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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8
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Removal of toluidine blue from water using 1:1 layered clay minerals. ADV POWDER TECHNOL 2022. [DOI: 10.1016/j.apt.2022.103608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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9
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Novikau R, Lujaniene G. Adsorption behaviour of pollutants: Heavy metals, radionuclides, organic pollutants, on clays and their minerals (raw, modified and treated): A review. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2022; 309:114685. [PMID: 35151139 DOI: 10.1016/j.jenvman.2022.114685] [Citation(s) in RCA: 35] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2021] [Revised: 01/06/2022] [Accepted: 02/04/2022] [Indexed: 06/14/2023]
Abstract
The increasing anthropogenic pressure results in environmental pollution and thus adversely affects the integrity of ecosystems. Consequently, various methods of removing pollutants from effluents have been developed and used to minimise this negative impact, with adsorption on clay minerals identified as the most promising approach. This review examines the adsorption of heavy metals, radionuclides, and organic pollutants on clays/clay minerals and their composites under diverse conditions and deals with the applications of these materials in the construction of engineering barriers for waste management. Additionally, we discuss the efficiency and mechanisms of pollutant adsorption on clays subjected to various treatments and modifications while describing the beneficial effects of such modification/treatment on adsorption performance, reusability, and in vivo/in vitro toxicity.
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Affiliation(s)
- Raman Novikau
- Department of Environmental Research, State Research Institute Center for Physical Sciences and Technology, Savanoriu Ave. 231, Vilnius, 02300, Lithuania.
| | - Galina Lujaniene
- Department of Environmental Research, State Research Institute Center for Physical Sciences and Technology, Savanoriu Ave. 231, Vilnius, 02300, Lithuania.
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Sriram G, Bendre A, Altalhi T, Jung HY, Hegde G, Kurkuri M. Surface engineering of silica based materials with Ni-Fe layered double hydroxide for the efficient removal of methyl orange: Isotherms, kinetics, mechanism and high selectivity studies. CHEMOSPHERE 2022; 287:131976. [PMID: 34438207 DOI: 10.1016/j.chemosphere.2021.131976] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Revised: 08/17/2021] [Accepted: 08/19/2021] [Indexed: 06/13/2023]
Abstract
Herein, low-cost diatomite (DE) and bentonite (BE) materials were surface modified with Ni-Fe layered double hydroxide (LDHs) (represented as NFD and NFB respectively), using a simple co-precipitation procedure for the removal of methyl orange (MO) dye from water. The adsorbents of both before and after MO adsorption have been studied by XRD, N2 adsorption-desorption isotherm, FTIR, FESEM-EDX and XPS characterization. The zeta potential analysis was used to observe the surface charge of adsorbents within the pH ranges of 4-10. The MO removal efficiency was significantly improved after LDHs modification, showing a 94.7% and 92.6% efficiency for NFD and NFB at pH 6, respectively. Whereas bare DE and BE have shown removal efficiency of 15.5% and 4.9% respectively. The maximum adsorption capacities of NFD and NFB using the Langmuir isotherm model were found to be 246.9 mgg-1 and 215.9 mgg-1 respectively. The designed NFD showed high selectivity towards anionic-based dyes from water and also the effect of salts shows the dye removal percentage was increased and decreased for the addition of Na2SO4 and NaCl, respectively. The reusability of NFD and NFB have been studied for a maximum of five cycles and they can remove MO up to four cycles. Therefore, the designed adsorbents can be very effective towards the removal of MO from water and they may be useful for dye-based wastewater treatment.
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Affiliation(s)
- Ganesan Sriram
- Centre for Nano and Material Sciences, JAIN University, Jain Global Campus, Bengaluru, 562112, Karnataka, India
| | - Akhilesh Bendre
- Centre for Nano and Material Sciences, JAIN University, Jain Global Campus, Bengaluru, 562112, Karnataka, India
| | - Tariq Altalhi
- Department of Chemistry, Faculty of Science, Taif University, Taif, Saudi Arabia
| | - Ho-Young Jung
- Department of Environment and Energy Engineering, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju, 61186, Republic of Korea
| | - Gurumurthy Hegde
- Centre for Nano-materials and Displays, B.M.S. College of Engineering, Basavanagudi, Bengaluru, 560019, India
| | - Mahaveer Kurkuri
- Centre for Nano and Material Sciences, JAIN University, Jain Global Campus, Bengaluru, 562112, Karnataka, India.
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Eltaweil AS, El-Monaem EMA, Mohy-Eldin MS, Omer AM. Fabrication of attapulgite/magnetic aminated chitosan composite as efficient and reusable adsorbent for Cr (VI) ions. Sci Rep 2021; 11:16598. [PMID: 34400760 PMCID: PMC8368087 DOI: 10.1038/s41598-021-96145-6] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Accepted: 08/02/2021] [Indexed: 02/07/2023] Open
Abstract
An efficient composite was constructed based on aminated chitosan (NH2Cs), attapulgite (ATP) clay and magnetic Fe3O4 for adsorptive removal of Cr(VI) ions. The as-fabricated ATP@Fe3O4-NH2Cs composite was characterized by Fourier Transform Infrared Spectroscopy (FTIR), Thermal Gravimetric Analyzer (TGA), Scanning Electron Microscope (SEM), Zeta potential (ZP), Vibrating Sample Magnetometer (VSM), Brunauer-Emmett-Teller method (BET) and X-ray photoelectron spectroscope (XPS). A significant improve in the adsorption profile was established at pH 2 in the order of ATP@Fe3O4-NH2Cs(1:3) > ATP@Fe3O4-NH2Cs(1:1) > ATP@Fe3O4-NH2Cs(3:1) > Fe3O4-NH2Cs > ATP. The maximum removal (%) of Cr(VI) exceeded 94% within a short equilibrium time of 60 min. The adsorption process obeyed the pseudo 2nd order and followed the Langmuir isotherm model with a maximum monolayer adsorption capacity of 294.12 mg/g. In addition, thermodynamics studies elucidated that the adsorption process was spontaneous, randomness and endothermic process. Interestingly, the developed adsorbent retained respectable adsorption properties with acceptable removal efficiency exceeded 58% after ten sequential cycles of reuse. Besides, the results hypothesize that the adsorption process occurs via electrostatic interactions, reduction of Cr(VI) to Cr(III) and ion-exchanging. These findings substantiate that the ATP@Fe3O4-NH2Cs composite could be effectively applied as a reusable adsorbent for removing of Cr(VI) ions from aqueous solutions.
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Affiliation(s)
| | - Eman M Abd El-Monaem
- Chemistry Department, Faculty of Science, Alexandria University, Alexandria, Egypt
| | - Mohamed S Mohy-Eldin
- Polymer Materials Research Department, Advanced Technology and New Materials Research Institute (ATNMRI), City of Scientific Research and Technological Applications (SRTA-City), New Borg El-Arab City, P. O. Box: 21934, Alexandria, Egypt
| | - Ahmed M Omer
- Polymer Materials Research Department, Advanced Technology and New Materials Research Institute (ATNMRI), City of Scientific Research and Technological Applications (SRTA-City), New Borg El-Arab City, P. O. Box: 21934, Alexandria, Egypt.
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Graphene-bentonite supported free-standing, flexible membrane with switchable wettability for selective oil–water separation. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.118569] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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13
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Abstract
Interactions between cationic dyes and negatively charged mineral surfaces have long attracted great attention from clay mineralogists, environmental scientists, and chemical engineers. In this study, the interactions between a cationic dye toluidine blue (TB) and palygorskite and sepiolite were investigated under different experimental conditions. The results showed that in addition to cation exchange, the specific surface area (SSA) of the minerals, particularly the formation of dimer molecules on the surface of both minerals, also accounted for the much higher TB uptake in comparison to their cation exchange capacities (CEC). The TB molecules were sorbed to the external surfaces, as no d-spacing expansion was observed in X-ray diffraction analyses. FTIR analyses showed strong interactions between the C=N or N-(CH3)2 group and the mineral surfaces, suggesting net electrostatic interactions if either of these functional groups bears a positive charge. Results from molecular dynamic simulations suggested dense monolayer TB formation on palygorskite because of its limited SSA and large CEC values. In comparison, a loosely dimeric formation was revealed on sepiolite for its large SSA and limited CEC values. Therefore, palygorskite is a better carrier for the sorption of cationic dyes, as evidenced by Maya blue paintings.
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Development of a Sensitive Self-Powered Glucose Biosensor Based on an Enzymatic Biofuel Cell. BIOSENSORS-BASEL 2021; 11:bios11010016. [PMID: 33430194 PMCID: PMC7825672 DOI: 10.3390/bios11010016] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 01/03/2021] [Accepted: 01/04/2021] [Indexed: 12/27/2022]
Abstract
Biofuel cells allow for constructing sensors that leverage the specificity of enzymes without the need for an external power source. In this work, we design a self-powered glucose sensor based on a biofuel cell. The redox enzymes glucose dehydrogenase (NAD-GDH), glucose oxidase (GOx), and horseradish peroxidase (HRP) were immobilized as biocatalysts on the electrodes, which were previously engineered using carbon nanostructures, including multi-wall carbon nanotubes (MWCNTs) and reduced graphene oxide (rGO). Additional polymers were also introduced to improve biocatalyst immobilization. The reported design offers three main advantages: (i) by using glucose as the substrate for the both anode and cathode, a more compact and robust design is enabled, (ii) the system operates under air-saturating conditions, with no need for gas purge, and (iii) the combination of carbon nanostructures and a multi-enzyme cascade maximizes the sensitivity of the biosensor. Our design allows the reliable detection of glucose in the range of 0.1-7.0 mM, which is perfectly suited for common biofluids and industrial food samples.
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15
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Feng X, Li Y, Yang Y, Ma Y, Ji W, Sun Y, Chen T, Chen Y. Preparation of a ZIF-67-modified magnetic solid phase extraction material and its application in the detection of pyridine ring insecticides. NEW J CHEM 2021. [DOI: 10.1039/d1nj00703c] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
An advanced and reliable m-SPE material of a water-stable ZIF was developed for the determination of trace praziquantel and pymetrozine in spinach and broccoli.
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Affiliation(s)
- Xiangzhi Feng
- State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering
- Ningxia University
- China
- College of Chemistry and Chemical Engineering
- Ningxia University
| | - Yuanyuan Li
- State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering
- Ningxia University
- China
- College of Chemistry and Chemical Engineering
- Ningxia University
| | - Yuanyuan Yang
- State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering
- Ningxia University
- China
- College of Chemistry and Chemical Engineering
- Ningxia University
| | - Yulong Ma
- State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering
- Ningxia University
- China
- College of Chemistry and Chemical Engineering
- Ningxia University
| | - Wenxin Ji
- State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering
- Ningxia University
- China
- College of Chemistry and Chemical Engineering
- Ningxia University
| | - Yonggang Sun
- State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering
- Ningxia University
- China
- College of Chemistry and Chemical Engineering
- Ningxia University
| | - Tong Chen
- Comprehensive Technology Centre
- Zhenjiang Customs District P. R. of China
- Zhenjiang
- China
| | - Yang Chen
- Shanghe New Materials Company
- Zhenjiang
- China
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16
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Modulation of MIL-101(Cr) morphology and selective removal of dye from water. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2021. [DOI: 10.1007/s13738-020-02012-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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17
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Recent advancements in graphene adsorbents for wastewater treatment: Current status and challenges. CHINESE CHEM LETT 2020. [DOI: 10.1016/j.cclet.2020.05.011] [Citation(s) in RCA: 56] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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Chang YS, Au PI, Mubarak NM, Khalid M, Jagadish P, Walvekar R, Abdullah EC. Adsorption of Cu(II) and Ni(II) ions from wastewater onto bentonite and bentonite/GO composite. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:33270-33296. [PMID: 32529626 DOI: 10.1007/s11356-020-09423-7] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/02/2020] [Accepted: 05/22/2020] [Indexed: 06/11/2023]
Abstract
Two superior adsorbents, namely bentonite and graphene oxide (GO), were hybridised to study the removal of copper and nickel ions from synthetic and industrial wastewater. The as-synthesised GO, bentonite/GO and bentonite were characterised by Fourier transform infrared spectroscopy, scanning electron microscopy, energy-dispersive X-ray spectroscopy and N2 adsorption-desorption analysis. The factors influencing the adsorption behaviours including contact time, initial solution pH, ionic strength, initial concentration of metal ions, temperature and adsorbent dosage were systematically investigated by batch equilibrium method. The adsorption equilibrium for copper and nickel onto bentonite was attained in 90 min while equilibrium was reached in 60 min on bentonite/GO. The adsorption of copper and nickel was pH-dependent in the range from pH 2 to pH 7 and from pH 2 to pH 8. Pseudo-first-order kinetic model excellently described the adsorption of copper and nickel onto bentonite and bentonite/GO. The equilibrium adsorption data was well described by the Langmuir isotherm model and the maximum adsorption capacity was 248.9 mg/g, 558.4 mg/g, 215.8 mg/g and 402.5 mg/g for bentonite-copper, bentonite/GO-copper, bentonite-nickel and bentonite/GO-nickel adsorption systems, respectively. The bentonite/GO composite exhibited a higher adsorption capacity of both cations from synthetic wastewater than pure bentonite owning to the synergistic effect between bentonite and GO. In all adsorption studies, copper was more efficiently removed than nickel due to its higher tendency to form bond with adsorbent surfaces. The adsorption of copper and nickel on bentonite/GO was mainly due to cation exchange, intermolecular and electrostatic interactions and physisorption dominated the adsorption processes. The practical application of bentonite/GO on adsorption of copper was investigated using real wastewater and its removal efficiency was beyond 98%. The excellent adsorption performances of composites for the copper and nickel removal from wastewater demonstrated its significant potential for pollution mitigations.
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Affiliation(s)
- Yii Shiuan Chang
- Department of Chemical Engineering, Faculty of Engineering and Science, Curtin University Malaysia, CDT 250, 98009, Miri, Sarawak, Malaysia
| | - Pek Ing Au
- Department of Chemical Engineering, Faculty of Engineering and Science, Curtin University Malaysia, CDT 250, 98009, Miri, Sarawak, Malaysia
| | - Nabisab Mujawar Mubarak
- Department of Chemical Engineering, Faculty of Engineering and Science, Curtin University Malaysia, CDT 250, 98009, Miri, Sarawak, Malaysia.
| | - Mohammad Khalid
- Graphene & Advanced 2D Materials Research Group (GAMRG), School of Science and Technology, Sunway University, No. 5, Jalan Universiti, Bandar Sunway, 47500, Subang Jaya, Selangor, Malaysia
| | - Priyanka Jagadish
- Graphene & Advanced 2D Materials Research Group (GAMRG), School of Science and Technology, Sunway University, No. 5, Jalan Universiti, Bandar Sunway, 47500, Subang Jaya, Selangor, Malaysia
| | - Rashmi Walvekar
- Department of Chemical Engineering, Xiamen University Malaysia, Jalan Sunsuria, Bandar Sunsuria, 43900, Sepang, Selangor, Malaysia
| | - Ezzat Chan Abdullah
- Department of Chemical Process Engineering, Malaysia-Japan International Institute of Technology (MJIIT), Universiti Teknologi Malaysia (UTM), Jalan Sultan Yahya Petra, 54100, Kuala Lumpur, Malaysia
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Lian Q, Ahmad ZU, Gang DD, Zappi ME, Fortela DLB, Hernandez R. The effects of carbon disulfide driven functionalization on graphene oxide for enhanced Pb(II) adsorption: Investigation of adsorption mechanism. CHEMOSPHERE 2020; 248:126078. [PMID: 32041070 DOI: 10.1016/j.chemosphere.2020.126078] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Revised: 01/25/2020] [Accepted: 01/30/2020] [Indexed: 05/19/2023]
Abstract
The surface properties of graphene oxide (GO) have been identified as the key effects on the adsorption of Pb(II) from aqueous solutions in this study. This study reveals the effect of the surface reactivity of GO via Carbon Disulfide (CS2) functionalization for Pb(II) adsorption. After successfully preparing CS2 functionalized GO (GOCS), the specific techniques were applied to investigate Pb(II) adsorption onto GOCS. Results indicated that the new sulfur-containing functional groups incorporated onto GOCS significantly enhanced Pb(II) adsorption capacity on GOCS than that of GO, achieving an improvement of 31% in maximum adsorption capacity increasing from 292.8 to 383.4 mg g-1. The equilibrium adsorption capacity for GOCS was 280.2 mg g-1 having an improvement of 83.2% over that of 152.97 mg g-1 for GO at the same initial concentration of 150 mg L-1 under the optimal pH of 5.7. Moreover, the results of adsorption experiments showed an excellent fit to the Langmuir and Pseudo-Second-Order models indicating the monolayer and chemical adsorption, respectively. The mechanism for Pb(II) adsorption on GOCS was proposed as the coordination, electrostatic interactions, cation-pi interactions, and Lewis acid-base interactions. The regeneration study showed that GOCS had an appreciable reusability for Pb(II) adsorption with the adsorption capacity of 208.92 mg g-1 after five regeneration cycles. In summary, GOCS has been proved to be a novel, useful, and potentially economic adsorbent for the high-efficiency removal of Pb(II) from aqueous solutions.
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Affiliation(s)
- Qiyu Lian
- Department of Civil Engineering, University of Louisiana at Lafayette, P. O. Box 43598, Lafayette, LA, 70504, USA; Center for Environmental Technology, The Energy Institute of Louisiana, P. O. Box 43597, Lafayette, LA, 70504, USA
| | - Zaki Uddin Ahmad
- Department of Civil Engineering, University of Louisiana at Lafayette, P. O. Box 43598, Lafayette, LA, 70504, USA
| | - Daniel Dianchen Gang
- Department of Civil Engineering, University of Louisiana at Lafayette, P. O. Box 43598, Lafayette, LA, 70504, USA; Center for Environmental Technology, The Energy Institute of Louisiana, P. O. Box 43597, Lafayette, LA, 70504, USA.
| | - Mark E Zappi
- Department of Chemical Engineering, University of Louisiana at Lafayette, P. O. Box 43675, Lafayette, LA, 70504, USA; Center for Environmental Technology, The Energy Institute of Louisiana, P. O. Box 43597, Lafayette, LA, 70504, USA
| | - Dhan Lord B Fortela
- Department of Chemical Engineering, University of Louisiana at Lafayette, P. O. Box 43675, Lafayette, LA, 70504, USA; Center for Environmental Technology, The Energy Institute of Louisiana, P. O. Box 43597, Lafayette, LA, 70504, USA
| | - Rafael Hernandez
- Department of Chemical Engineering, University of Louisiana at Lafayette, P. O. Box 43675, Lafayette, LA, 70504, USA; Center for Environmental Technology, The Energy Institute of Louisiana, P. O. Box 43597, Lafayette, LA, 70504, USA
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Nano-hybrid based on polypyrrole/chitosan/grapheneoxide magnetite decoration for dual function in water remediation and its application to form fashionable colored product. ADV POWDER TECHNOL 2020. [DOI: 10.1016/j.apt.2020.01.030] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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Zhang H, Yu D, Wang W, Gao P, Bu K, Zhang L, Zhong S, Liu B. Multiple heterojunction system of Bi2MoO6/WO3/Ag3PO4 with enhanced visible-light photocatalytic performance towards dye degradation. ADV POWDER TECHNOL 2019. [DOI: 10.1016/j.apt.2019.06.010] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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