1
|
Sharma A, Shivanna JM, Alodhayb AN, Hegde G. Efficient cationic dye removal from water through Arachis hypogaea skin-derived carbon nanospheres: a rapid and sustainable approach. NANOSCALE ADVANCES 2024; 6:3199-3210. [PMID: 38868826 PMCID: PMC11166100 DOI: 10.1039/d4na00254g] [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: 03/26/2024] [Accepted: 04/18/2024] [Indexed: 06/14/2024]
Abstract
The present study investigates the potential of Arachis hypogaea skin-derived carbon nanospheres (CNSs) as an efficient adsorbent for the rapid removal of cationic dyes from aqueous solutions. The CNSs were synthesized through a facile, cost-effective, catalyst-free and environmentally friendly process, utilizing Arachis hypogaea skin waste as a precursor. This is the first reported study on the synthesis of mesoporous carbon nanospheres from Arachis hypogaea skin. The structural and morphological characteristics of the CNSs were confirmed by different nano-characterization techniques. The adsorption performance of the carbon nanospheres was evaluated through batch adsorption experiments using two cationic dyes-methylene blue (MB) and malachite green (MG). The effects of the initial dye concentration, contact time, adsorbent dosage, and pH were investigated to determine the optimal conditions for dye removal. The results revealed that the obtained CNSs exhibited remarkable adsorption capacity and rapid adsorption kinetics. Up to ∼98% removal efficiency was noted for both dyes in as little as 2 min for a 5 mg L-1 dye concentration, and the CNSs maintained their structural morphology even after adsorption. The adsorption data were fitted to various kinetic and isotherm models to gain insights into the adsorption mechanism and behaviour. The pseudo-second-order kinetic model and Redlich-Peterson model best described the experimental data, indicating multi-layer adsorption and chemisorption as the predominant adsorption mechanism. The maximum adsorption capacity was determined to be 1128.46 mg g-1 for MB and 387.6 mg g-1 for MG, highlighting the high affinity of the carbon nanospheres towards cationic dyes. Moreover, CNS reusability and stability were examined through desorption and regeneration experiments, which revealed sustained efficiency over 7 cycles. CNSs were immobilised in a membrane matrix and examined for adsorption, which demonstrated acceptable efficiency values and opened the door for further improvement.
Collapse
Affiliation(s)
- Aman Sharma
- Department of Chemistry, School of Sciences, CHRIST (Deemed to be University) Hosur Road Bengaluru 560029 India
- Centre for Advanced Research and Development (CARD), CHRIST (Deemed to be University) Hosur Road Bengaluru 560029 India
| | | | - Abdullah N Alodhayb
- Department of Physics and Astronomy, College of Science, King Saud University Riyadh 11451 Saudi Arabia
| | - Gurumurthy Hegde
- Department of Chemistry, School of Sciences, CHRIST (Deemed to be University) Hosur Road Bengaluru 560029 India
- Centre for Advanced Research and Development (CARD), CHRIST (Deemed to be University) Hosur Road Bengaluru 560029 India
| |
Collapse
|
2
|
Fauzia, Khan MA, Chaman M, Azam A. Antibacterial and sunlight-driven photocatalytic activity of graphene oxide conjugated CeO 2 nanoparticles. Sci Rep 2024; 14:6606. [PMID: 38503811 PMCID: PMC10951321 DOI: 10.1038/s41598-024-54905-0] [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: 10/10/2023] [Accepted: 02/18/2024] [Indexed: 03/21/2024] Open
Abstract
This work focuses on the structural, morphological, optical, photocatalytic, antibacterial properties of pure CeO2 nanoparticles (NPs) and graphene oxide (GO) based CeO2 nanocomposites (GO-1/CeO2, GO-5/CeO2, GO-10/CeO2, GO-15/CeO2), synthesized using the sol-gel auto-combustion and subsequent sonication method, respectively. The single-phase cubic structure of CeO2 NPs was confirmed by Rietveld refined XRD, HRTEM, FTIR and Raman spectroscopy. The average crystallite size was calculated using Debye Scherrer formula and found to increase from 20 to 25 nm for CeO2 to GO-15/CeO2 samples, respectively. The related functional groups were observed from Fourier transform infrared (FTIR) spectroscopy, consistent with the outcomes of Raman spectroscopy. The optical band gap of each sample was calculated by using a Tauc plot, which was observed to decrease from 2.8 to 1.68 eV. The valence state of Ce (Ce3+ and Ce4+) was verified using X-ray photoelectron spectroscopy (XPS) for CeO2 and GO-10/CeO2. The poisonous methylene blue (MB) dye was used to evaluate the photocatalytic activity of each sample in direct sunlight. The GO-15/CeO2 nanocomposite showed the highest photocatalytic activity with rate constant (0.01633 min-1), and it degraded the MB dye molecules by 100% within 120 min. The high photocatalytic activity of this material for degrading MB dye establishes it as an outstanding candidate for wastewater treatment. Further, these nanocomposites also demonstrated excellent antimicrobial activity against Pseudomonas aeruginosa PAO1.
Collapse
Affiliation(s)
- Fauzia
- Department of Applied Physics, Z.H. College of Engineering & Technology, Aligarh Muslim University, Aligarh, 202002, India
| | - Mo Ahamad Khan
- Department of Microbiology, Jawaharlal Nehru Medical College, Aligarh Muslim University, Aligarh, UP, 202002, India
| | - Mohd Chaman
- Mewat Engineering College, Nuh, Mewat, Haryana, 122107, India
| | - Ameer Azam
- Department of Applied Physics, Z.H. College of Engineering & Technology, Aligarh Muslim University, Aligarh, 202002, India.
- Department of Physics, Faculty of Science, Islamic University of Madinah, 42351, Madinah, Saudi Arabia.
| |
Collapse
|
3
|
Saputra E, Prawiranegara BA, Nugraha MW, Sambudi NS, Sugesti H, Awaluddin A, Utama PS, Manawan M. Fabrication of hybrid covalent triazine framework-zinc ferrite spinel to uplift visible light-driven photocatalytic organic pollutant degradation. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:39961-39977. [PMID: 36602743 DOI: 10.1007/s11356-022-25021-1] [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: 10/04/2022] [Accepted: 12/23/2022] [Indexed: 06/17/2023]
Abstract
The tunability of porous covalent triazine frameworks (CTFs) can mitigate poor photostability and rapid hole-electron recombination. Herein, an excellent improvement of visible light-driven photocatalytic pollutant degradation was achieved using a hybrid semiconductor of covalent triazine framework-zinc ferrite spinel catalysts (CTF-ZnFe2O4). The as-prepared CTF-ZnFe2O4 composites were fabricated using a facile one-pot ionothermal method. The hybrid photocatalysts were identified using X-ray diffraction (XRD), scanning electron microscopy/energy-dispersive X-ray (SEM-EDX), X-ray photoelectron spectrometer (XPS), Brunauer-Emmett-Teller (BET), Fourier transform infrared (FTIR), and UV-visible diffuse reflection spectroscopy (UV-vis DRS) characterizations. The analysis reveals that hybridization successfully ensued and altered the crystallinity structure, morphology, surface area, and bandgap energy of hybrid material. It was found that CTF-ZnFe2O4 90:10 is very effective for the degradation of MB in a UV-vis light photocatalytic process with the efficiency of 95.4% and kobs of 0.421 min-1 for degradation of 50 mg/L MB with 0.5 g/L dosages for 120 min. Additionally, the scavenger study, effect of additional oxidants, and stability were performed for the practical application of a hybrid photocatalyst. CTF-ZnFe2O4 90:10 shows outstanding pollutant degradation in sunlight irradiation and high stability with only a 5.2% reduction after a five-times sequential recycling process. Moreover, the photocatalytic mechanism of as-prepared CTF-ZnFe2O4 was mainly influenced by [Formula: see text] radical compared to [Formula: see text] and [Formula: see text] radicals. Overall, The as-prepared CTF-ZnFe2O4 shows significant potential to be utilized for photocatalytic wastewater treatment.
Collapse
Affiliation(s)
- Edy Saputra
- Department of Chemical Engineering, Universitas Riau, Pekanbaru, 28293, Indonesia.
| | - Barata Aditya Prawiranegara
- Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Riau, Pekanbaru, 28293, Indonesia
| | - Muhammad Wahyu Nugraha
- Department of Chemistry, Graduate School of Natural Science and Technology, Okayama University, Okayama, 700-8530, Japan
| | - Nonni Soraya Sambudi
- Department of Chemical Engineering, Universitas Pertamina, Simprug, Jakarta, 12220, Indonesia
| | - Heni Sugesti
- Department of Chemical Engineering, Universitas Riau, Pekanbaru, 28293, Indonesia
| | - Amir Awaluddin
- Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Riau, Pekanbaru, 28293, Indonesia
| | - Panca Setia Utama
- Department of Chemical Engineering, Universitas Riau, Pekanbaru, 28293, Indonesia
| | - Maykel Manawan
- Teknologi Daya Gerak, Universitas Pertahan Indonesia, Bogor, 16810, Indonesia
| |
Collapse
|
4
|
Smrithi SP, Kottam N, Narula A, Madhu GM, Mohammed R, Agilan R. Carbon dots decorated cadmium sulphide heterojunction-nanospheres for the enhanced visible light driven photocatalytic dye degradation and hydrogen generation. J Colloid Interface Sci 2022; 627:956-968. [PMID: 35901574 DOI: 10.1016/j.jcis.2022.07.100] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Revised: 07/13/2022] [Accepted: 07/17/2022] [Indexed: 01/14/2023]
Abstract
Carbon dots (C-dots) developed from beetroot is used for the rational design of cadmium sulphide based heterojunction photocatalysts (C-dots@CdS) using hydrothermal technique. The crystal structure, phase, morphology and optical characteristics of the synthesised materials are determined using X-ray diffraction (XRD), High resolution transmission electron microscopy (HR-TEM), Field emission scanning electron microscopy (FESEM), Energy dispersive X-ray analysis (EDAX), Fourier transform infrared spectroscopy (FTIR), Raman spectroscopy, UV-Visible diffuse reflectance spectroscopy (UV-DRS), photoluminescence spectroscopy (PL spectroscopy), BET adsorption, X-ray photoelectron spectroscopy (XPS) and electrochemical studies. Using C-dots@CdS catalytic system, a superior photocatalytic activity relative to the undecorated CdS is observed. Among the C-dots@CdS samples, the CdS loaded with 6 wt% of C-dots exhibited enhanced hydrogen evolution rate compared with other samples considered for the study. CdS nanospheres modified with C-dots (6 wt%) resulted in the photocatalytic hydrogen evolution rate of 1582 µmolg-1 against 849 µmolg-1 evolution rate obtained for CdS nanospheres within 3 h. In spite of being 0D/0D type nano-heteroarchitecture, C-dots@CdS system obtained an apparent quantum yield of 6.37 % for the catalytic dosage of 20 mg under the irradiation of visible light. CdS in the C-dots@CdS system serves as the light harvester while C-dots with discernible edges can maintain the continuous supply of photo-excited charge carriers and hence can reduce the charge-carrier recombination. Further, the photodegradation of crystal violet dye using the optimised dosage of C-dots@CdS-6 exhibited an efficiency of 97.3 % in 120 min of visible light irradiation under neutral conditions. The detailed kinetic study reveals that the mechanism of photodegradation of crystal violet dye using C-dots@CdS system can be described using pseudo-second-order kinetics. The presence of oxygen rich hydrophilic surface functionalities of C-dots, the formation of near-surface heterojunction and the suitable band structure of C-dots@CdS system leading to the optimum charge carrier separation kinetics can be attributed to the enhanced photocatalytic performance. This work offers a promising strategy to develop bio-derived C-dots based heterojunction photocatalyst to address the burgeoning energy and environmental demands.
Collapse
Affiliation(s)
- S P Smrithi
- Department of Chemistry, M S Ramaiah Institute of Technology (An Autonomous Institute Affiliated to Visvesvaraya Technological University, Belgaum), Bengaluru 560054, India; Department of Chemistry/Biochemistry, M S Ramaiah College of Arts, Science and Commerce (Affiliated to Bangalore Central University), Bangalore 560054, India
| | - Nagaraju Kottam
- Department of Chemistry, M S Ramaiah Institute of Technology (An Autonomous Institute Affiliated to Visvesvaraya Technological University, Belgaum), Bengaluru 560054, India.
| | - Archna Narula
- Department of Chemical Engineering, M S Ramaiah Institute of Technology (An Autonomous Institute Affiliated to Visvesvaraya Technological University, Belgaum), Bengaluru 560054, India
| | - G M Madhu
- Department of Chemical Engineering, M S Ramaiah Institute of Technology (An Autonomous Institute Affiliated to Visvesvaraya Technological University, Belgaum), Bengaluru 560054, India
| | - Riyaz Mohammed
- Department of Chemical Engineering, M S Ramaiah Institute of Technology (An Autonomous Institute Affiliated to Visvesvaraya Technological University, Belgaum), Bengaluru 560054, India
| | - R Agilan
- Department of Chemical Engineering, M S Ramaiah Institute of Technology (An Autonomous Institute Affiliated to Visvesvaraya Technological University, Belgaum), Bengaluru 560054, India
| |
Collapse
|
5
|
Jiang M, Chen L, Niu N. Enhanced adsorption for malachite green by functionalized lignin magnetic composites: Optimization, performance and adsorption mechanism. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.132842] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
|
6
|
Spiridon I, Apostol I, Anghel NC, Zaltariov MF. Equilibrium, kinetic and thermodynamic studies of new materials based on xanthan gum and cobalt ferrite for dye adsorption. Appl Organomet Chem 2022. [DOI: 10.1002/aoc.6670] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Iuliana Spiridon
- “Petru Poni” Institute of Macromolecular Chemistry, Grigore Ghica–Vodă Alley 41A Iași Romania
| | - Irina Apostol
- “Petru Poni” Institute of Macromolecular Chemistry, Grigore Ghica–Vodă Alley 41A Iași Romania
| | - Narcis Cătălin Anghel
- “Petru Poni” Institute of Macromolecular Chemistry, Grigore Ghica–Vodă Alley 41A Iași Romania
| | | |
Collapse
|
7
|
Shin JH, Yang JE, Park JE, Jeong SW, Choi SJ, Choi YJ, Jeon J. Rapid and Efficient Removal of Anionic Dye in Water Using a Chitosan-Coated Iron Oxide-Immobilized Polyvinylidene Fluoride Membrane. ACS OMEGA 2022; 7:8759-8766. [PMID: 35309453 PMCID: PMC8928519 DOI: 10.1021/acsomega.1c06991] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Accepted: 02/21/2022] [Indexed: 05/14/2023]
Abstract
Anionic dyes are one of the most serious contaminants in water as these molecules are known to be toxic to many living organisms. Herein, we report the development of functionalized polyvinylidene fluoride membranes modified with chitosan-coated iron oxide nanomaterials (Fe-PVDF) for the efficient treatment of anionic dye-contaminated water. Aqueous solutions of anionic dyes could be captured rapidly by passing through the functionalized membrane under reduced pressure. Under neutral conditions, Fe-PVDF showed a maximum removal capacity of 74.6 mg/g for Evans blue (EB) through the adsorption process. In addition, the adsorption capacity was significantly enhanced up to 434.78 mg/g under acidic conditions. The adsorption process for EB matched well with the Langmuir model, indicating monolayer adsorption of the dye to the membrane surface. Moreover, Fe-PVDF can be reusable by a simple washing step in an alkaline solution, and thus, the composite membrane was applied several times without a significant decrease in its adsorption performance. The same composite membrane was further applied to the removal of five other different anionic dyes with high efficiencies. The adsorption mechanism can be explained by the electrostatic interaction between the positively charged chitosan and the negatively charged dye as well as the affinity of the sulfate groups in dye molecules for the surface of the iron oxide nanoparticles. The easy preparation and rapid decolorization procedures make this composite membrane suitable for efficient water treatment.
Collapse
Affiliation(s)
- Jun-Ho Shin
- Department
of Applied Chemistry, College of Engineering, Kyungpook National University, Daegu 41566, Republic
of Korea
| | - Jung Eun Yang
- Department
of Advanced Process Technology and Fermentation, World Institute of Kimchi, Gwangju 61755, Republic of Korea
| | - Jung Eun Park
- Department
of Applied Chemistry, College of Engineering, Kyungpook National University, Daegu 41566, Republic
of Korea
| | - Sun-Wook Jeong
- School
of Environmental Engineering, University
of Seoul, Seoul 02504, Republic of Korea
| | - Sang-June Choi
- School
of Architectural, Civil, Environmental, and Energy Engineering, Kyungpook National University, Daegu 41566, Republic
of Korea
| | - Yong Jun Choi
- School
of Environmental Engineering, University
of Seoul, Seoul 02504, Republic of Korea
- . Phone: +82-2-6490-2873. Fax: +82-2-6490-2859
| | - Jongho Jeon
- Department
of Applied Chemistry, College of Engineering, Kyungpook National University, Daegu 41566, Republic
of Korea
- . Phone: +82-53-950-5584. Fax: +82-53-950-5580
| |
Collapse
|
8
|
Mozaffari Majd M, Kordzadeh-Kermani V, Ghalandari V, Askari A, Sillanpää M. Adsorption isotherm models: A comprehensive and systematic review (2010-2020). THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 812:151334. [PMID: 34748826 DOI: 10.1016/j.scitotenv.2021.151334] [Citation(s) in RCA: 64] [Impact Index Per Article: 32.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Revised: 10/26/2021] [Accepted: 10/26/2021] [Indexed: 06/13/2023]
Abstract
Among numerous methods developed in purification and separation industries, the adsorption process has received considerable attention due to its inexpensive, facile, and eco-friendly nature. The importance of the adsorption process causes extraordinary endeavors for modeling the adsorption isotherms during the years; thus, myriads of research have been conducted and many reviews have been published. In this paper, we have attempted to gather the most widely used adsorption isotherms and their related definitions, along with examples of correlated work of the recent decade. In the present review, 37 adsorption isotherms with about 400 references have been collected from the research published in the period of 2010-2020. The adsorption isotherms utilized are alphabetically organized for ease of access. The parameters of each isotherm, as well as the applicable definitions, are presented in the table, in addition to being discussed in the text. Another table is provided for the practical use of researchers, featuring the usage of the related isotherms in peer-reviewed studies.
Collapse
Affiliation(s)
- Mahdieh Mozaffari Majd
- Kerman Momtazan Cement Company, 32(nd) km Kerman-Tehran Highway, 7637158135, Kerman, Iran
| | - Vahid Kordzadeh-Kermani
- Department of Chemical Engineering, Iran University of Science and Technology, Narmak, Tehran 16846-13114, Iran
| | - Vahab Ghalandari
- Kerman Momtazan Cement Company, 32(nd) km Kerman-Tehran Highway, 7637158135, Kerman, Iran
| | - Anis Askari
- Department of Chemical Engineering, Amirkabir University of Technology (Tehran Polytechnic), Tehran, Iran
| | - Mika Sillanpää
- Faculty of Science and Technology, School of Applied Physics, University Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia; School of Chemistry, Shoolini University, Solan, Himachal Pradesh 173229, India; Department of Biological and Chemical Engineering, Aarhus University, Nørrebrogade 44, 8000 Aarhus C, Denmark.
| |
Collapse
|
9
|
Heteroatom Modified Hybrid Carbon Quantum Dots Derived from Cucurbita pepo for the Visible Light Driven Photocatalytic Dye Degradation. Top Catal 2022. [DOI: 10.1007/s11244-022-01581-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
|
10
|
Ghereghlou M, Esmaeili AA, Darroudi M. Adsorptive Removal of Methylene Blue from Aqueous Solutions Using Magnetic Fe3O4@C-dots: Removal and kinetic studies. SEP SCI TECHNOL 2022. [DOI: 10.1080/01496395.2022.2029490] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Mahnaz Ghereghlou
- Department of Chemistry, Faculty of Sciences, Ferdowsi University of Mashhad, Mashhad, Iran
| | - Abbas Ali Esmaeili
- Department of Chemistry, Faculty of Sciences, Ferdowsi University of Mashhad, Mashhad, Iran
| | - Majid Darroudi
- Nuclear Medicine Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
- Department of Medical Biotechnology and Nanotechnology, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| |
Collapse
|
11
|
Process Parameters Optimization, Characterization, and Application of KOH-Activated Norway Spruce Bark Graphitic Biochars for Efficient Azo Dye Adsorption. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27020456. [PMID: 35056771 PMCID: PMC8780614 DOI: 10.3390/molecules27020456] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Revised: 12/29/2021] [Accepted: 01/06/2022] [Indexed: 12/23/2022]
Abstract
In this work, Norway spruce bark was used as a precursor to prepare activated biochars (BCs) via chemical activation with potassium hydroxide (KOH) as a chemical activator. A Box–Behnken design (BBD) was conducted to evaluate and identify the optimal conditions to reach high specific surface area and high mass yield of BC samples. The studied BC preparation parameters and their levels were as follows: pyrolysis temperature (700, 800, and 900 °C), holding time (1, 2, and 3 h), and ratio of the biomass: chemical activator of 1: 1, 1.5, and 2. The planned BBD yielded BC with extremely high SSA values, up to 2209 m2·g−1. In addition, the BCs were physiochemically characterized, and the results indicated that the BCs exhibited disordered carbon structures and presented a high quantity of O-bearing functional groups on their surfaces, which might improve their adsorption performance towards organic pollutant removal. The BC with the highest SSA value was then employed as an adsorbent to remove Evans blue dye (EB) and colorful effluents. The kinetic study followed a general-order (GO) model, as the most suitable model to describe the experimental data, while the Redlich–Peterson model fitted the equilibrium data better. The EB adsorption capacity was 396.1 mg·g−1. The employment of the BC in the treatment of synthetic effluents, with several dyes and other organic and inorganic compounds, returned a high percentage of removal degree up to 87.7%. Desorption and cyclability tests showed that the biochar can be efficiently regenerated, maintaining an adsorption capacity of 75% after 4 adsorption–desorption cycles. The results of this work pointed out that Norway spruce bark indeed is a promising precursor for producing biochars with very promising properties.
Collapse
|
12
|
Comparative Investigation of Congo Red and Direct Blue-1 Adsorption on Mycosynthesized Iron Nanoparticle. J CLUST SCI 2021. [DOI: 10.1007/s10876-021-02096-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
|
13
|
Synthesis and use of new porous metal complexes containing a fusidate moiety as gas storage media. KOREAN J CHEM ENG 2021. [DOI: 10.1007/s11814-020-0692-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
14
|
Effect of Doping Al Cations into MgFe2O4 Magnetic Structure for Efficient Removals of Methyl Orange Dye from Water. J Inorg Organomet Polym Mater 2020. [DOI: 10.1007/s10904-020-01816-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
15
|
Islam JB, Islam MR, Furukawa M, Tateishi I, Katsumata H, Kaneco S. Performance of EDTA modified magnetic ZnFe 2O 4 during photocatalytic reduction of Cr(VI) in aqueous solution under UV irradiation. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART A, TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING 2020; 56:44-51. [PMID: 33090933 DOI: 10.1080/10934529.2020.1835389] [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: 05/29/2020] [Revised: 10/07/2020] [Accepted: 10/07/2020] [Indexed: 06/11/2023]
Abstract
The photocatalytic reduction of toxic Cr(VI) to non-pernicious Cr(III) using ZnFe2O4/EDTA (ethylenediaminetetraacetic acid) under UV irradiation was evaluated. The reduction of Cr(VI) with bare ZnFe2O4 under UV irradiation was negligible. However, the Cr(VI) in the solution was completely reduced within 3 h after the introduction of EDTA. EDTA could consume valence band holes and could be oxidized by holes into inorganic products. Therefore, photo-generated electrons could be used to reduce Cr(VI) to Cr(III). The effect of concentration of EDTA, ZnFe2O4 photocatalyst dosages, and initial pH on the photocatalytic reduction of Cr(VI) was investigated. The results revealed that the photocatalytic reduction of Cr(VI) accelerated by increasing EDTA concentration and ZnFe2O4 dosage. The present reduction process confirms the pseudo-first-order kinetic reaction. The quasi reduction rate constant increased from 3.5 x 10-4 min-1 to 2.6 x 10-2 min-1 with the increase in initial EDTA concentration from 0 to 1000 mg L-1. The acidic solution is preferable for the photocatalytic reduction of Cr(VI). The entire reduction of Cr(VI) was carried out within 2 h under the optimum conditions with pH 2, 20 mg ZnFe2O4, and 500 mg L-1 EDTA. The formation of [Cr-EDTA]3+ complex may be advantageous to accelerate the Cr(VI) reduction. A probable mechanism for the photocatalytic Cr(VI) reduction was speculated here.
Collapse
Affiliation(s)
- Jahida Binte Islam
- Department of Chemistry for Materials, Graduate School of Engineering, Mie University, Mie, Japan
| | - Md Rakibul Islam
- Department of Chemistry for Materials, Graduate School of Engineering, Mie University, Mie, Japan
| | - Mai Furukawa
- Department of Chemistry for Materials, Graduate School of Engineering, Mie University, Mie, Japan
| | - Ikki Tateishi
- Global Environment Center for Education & Research, Mie University, Mie, Japan
| | - Hideyuki Katsumata
- Department of Chemistry for Materials, Graduate School of Engineering, Mie University, Mie, Japan
| | - Satoshi Kaneco
- Department of Chemistry for Materials, Graduate School of Engineering, Mie University, Mie, Japan
- Global Environment Center for Education & Research, Mie University, Mie, Japan
| |
Collapse
|
16
|
Reddy KM, Singh SP. Easy removal of nitrate and phosphate anions from water by low cost chitosan and activated charcoal. INTERNATIONAL JOURNAL OF CHEMICAL REACTOR ENGINEERING 2020. [DOI: 10.1515/ijcre-2020-0113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
AbstractPresence of nitrate and phosphate ions is difficult to remove from the lakes, as they are highly soluble in water. A way of chemical method adopted to remove these ions from the drinking water using the simple method use of naturally abundant chitosan with charcoal. Adsorption of nitrate and phosphate anions from aqueous solution (water/waste water) on both the chitosan and activated charcoal was investigated. In batch mode adsorption study leads to developing efficient low-cost removal method is important to protect the aquatic environment from the high concentration of nitrate and phosphate anions intake as well as adverse effects on human health. The modified chitosan microspheres had a laudable performance for nitrate and phosphate adsorption Use of this material as an adsorbent is a cheaper and biocompatible method. A systematic study of the adsorption of nitrate and phosphate anions on chitosan and activated charcoal was performed by varying the pH, the initial concentration, contact time, and adsorbent dosage. The results demonstrate that the adsorption process was followed adsorption kinetics of both first and second order kinetics when we use of the chitosan and activated charcoal and chitosan is promising for treating water that is contaminated with nitrate and phosphate anions.
Collapse
Affiliation(s)
- Katlakanti Mohan Reddy
- Department of Chemistry, School of Engineering, University of Petroleum and Energy Studies (UPES), Bidholi Campus, Dehradun, 248007, Uttarakhand, India
| | - Samarth Pratap Singh
- Department of Chemistry, School of Engineering, University of Petroleum and Energy Studies (UPES), Bidholi Campus, Dehradun, 248007, Uttarakhand, India
| |
Collapse
|
17
|
Effective Adsorption of Hexavalent Chromium and Divalent Nickel Ions from Water through Polyaniline, Iron Oxide, and Their Composites. APPLIED SCIENCES-BASEL 2020. [DOI: 10.3390/app10082882] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Water pollution caused by industrial wastes containing heavy metals and dyes is a major environmental problem. This study reports on the synthesis, characterization, and utilizations of Polyaniline (PANI) and its composites with Fe3O4 for the removal of hexavalent chromium Cr(VI) and divalent nickel Ni(II) ions from water. The adsorption data were fitted in Freudlich, Langmuir, Tempkin, Dubbanin–Ruddishkawich (D–R), and Elovich adsorption isotherms. The Freundlich isotherm fits more closely to the adsorption data with R2 values of 0.9472, 0.9890, and 0.9684 for adsorption of Cr(VI) on Fe3O4, PANI, and PANI/Fe3O4 composites, respectively, while for adsorption of Ni(II) these values were 0.9366, 0.9232, and 0.9307 respectively. The effects of solution pH, initial concentration, contact time, ionic strength, and adsorbent dosage on adsorption behavior were investigated. The adsorption ability of composites was compared with pristine PANI and Fe3O4 particles. Activation energy and other thermodynamic properties such as changes in enthalpy, entropy, and Gibbs free energy indicated spontaneous and exothermic adsorption.
Collapse
|
18
|
|
19
|
Arabkhani P, Asfaram A. Development of a novel three-dimensional magnetic polymer aerogel as an efficient adsorbent for malachite green removal. JOURNAL OF HAZARDOUS MATERIALS 2020; 384:121394. [PMID: 31628059 DOI: 10.1016/j.jhazmat.2019.121394] [Citation(s) in RCA: 125] [Impact Index Per Article: 31.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2019] [Revised: 09/26/2019] [Accepted: 10/03/2019] [Indexed: 05/18/2023]
Abstract
A novel three-dimensional (3D) magnetic bacterial cellulose nanofiber/graphene oxide polymer aerogel (MBCNF/GOPA) composed of bacterial cellulose nanofibers (BCNFs), Fe3O4 nanoparticles, graphene oxide (GO) nano-sheets, and polyvinyl alcohol (PVA) was developed by combining a facile filler-loaded networks method with a vacuum freeze-drying process for the removal of malachite green (MG) dye from aqueous solution. The influence of various factors on adsorption, including initial dye concentration, adsorbent dosage, contact time, temperature, and pH of dye solution, was then investigated. The adsorbent preserved a high adsorption capacity over a wide range of pH conditions. Moreover, the adsorption isotherms data fitted well with the Langmuir isotherm model with a maximum adsorption capacity of 270.27 mg g-1. Adsorption kinetics followed the pseudo-second-order model, and the thermodynamic parameters showed that the adsorption of MG dye was feasible and endothermic in nature and occurred spontaneously. Therefore, owing to its demonstrated properties such as 3D interconnected porous structure, lightweight, large specific surface area, superparamagnetic behavior at room temperature, excellent adsorbent efficiency (93% removal) and also its simple and eco-friendly synthesis process, MBCNF/GOPA could be considered a promising candidate for removing cationic dye pollutants from aqueous solution, which can easily be collected from aqueous solution by a small magnet. MBCNF/GOPA also showed favorable reusability for MG removal in wastewater treatment, and its application in different water samples for the removal of MG dye molecules from "real" samples was successfully performed.
Collapse
Affiliation(s)
- Payam Arabkhani
- Department of Chemistry, Tehran North Branch, Islamic Azad University, Tehran, Iran
| | - Arash Asfaram
- Medicinal Plants Research Center, Yasuj University of Medical Sciences, Yasuj, Iran.
| |
Collapse
|
20
|
Remediation of azo-dyes based toxicity by agro-waste cotton boll peels mediated palladium nanoparticles. JOURNAL OF SAUDI CHEMICAL SOCIETY 2020. [DOI: 10.1016/j.jscs.2019.11.003] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
|
21
|
Amos-Tautua BM, Fakayode OJ, Songca SP, Oluwafemi OS. Evolution of gluconic acid capped paramagnetic iron oxide nanoparticles. ACTA ACUST UNITED AC 2019. [DOI: 10.1016/j.nanoso.2019.100389] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
|
22
|
Lee SY, Shim HE, Yang JE, Choi YJ, Jeon J. Continuous Flow Removal of Anionic Dyes in Water by Chitosan-Functionalized Iron Oxide Nanoparticles Incorporated in a Dextran Gel Column. NANOMATERIALS 2019; 9:nano9081164. [PMID: 31416210 PMCID: PMC6724129 DOI: 10.3390/nano9081164] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/19/2019] [Revised: 07/30/2019] [Accepted: 08/10/2019] [Indexed: 11/16/2022]
Abstract
This paper describes a novel chromatographic method for efficient removal of anionic dyes from aqueous solutions. Chitosan-coated Fe3O4 nanoparticles can easily be immobilized on a dextran gel column. Single elution of Evans Blue (EB) solution to the nanoadsorbent-incorporated columns provides high removal efficiency with a maximum adsorption capacity of 243.9 mg/g. We also investigated the influence of initial concentration and solution pH on the removal efficiency of EB. The electrostatic interaction between the adsorbent surface and negatively charged sulfate groups on EB molecules promotes the efficient adsorption of dyes. The equilibrium data matched well with the Langmuir isotherm model, which indicated monolayer dye adsorption onto the adsorbent surface. To extend the application of the current method, we performed further adsorption experiments using other anionic dyes of different colors (Cy5.5, Acid Yellow 25, Acid Green 25, and Acid Red 1). All of these molecules can efficiently be captured under continuous flow conditions, with higher removal efficiency obtained with more negatively charged dyes. These findings clearly demonstrate that the present approach is a useful method for the removal of anionic dye contaminants in aqueous media by adsorption.
Collapse
Affiliation(s)
- Sang Yeob Lee
- Department of Applied Chemistry, School of Applied Chemical Engineering, Kyungpook National University, Daegu 41566, Korea
| | - Ha Eun Shim
- Department of Chemistry, Kyungpook National University, Daegu 41566, Korea
| | - Jung Eun Yang
- Department of Advanced Process Technology and Fermentation, World Institute of Kimchi, Gwangju 61755, Korea
| | - Yong Jun Choi
- School of Environmental Engineering, University of Seoul, Seoul 02504, Korea
| | - Jongho Jeon
- Department of Applied Chemistry, School of Applied Chemical Engineering, Kyungpook National University, Daegu 41566, Korea.
| |
Collapse
|
23
|
Green synthesis of zinc doped cobalt ferrite nanoparticles: Structural, optical, photocatalytic and antibacterial studies. ACTA ACUST UNITED AC 2019. [DOI: 10.1016/j.nanoso.2019.100322] [Citation(s) in RCA: 55] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
|