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Usmanova GS, Latypova LR, Mustafin AG. Removal of Anionic Methyl Orange Dye from Water by Poly[2-methyl-1 H-indole] Derivatives: Investigation of Kinetics and Isotherms of Adsorption. J Phys Chem B 2024; 128:4195-4207. [PMID: 38634441 DOI: 10.1021/acs.jpcb.3c07921] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/19/2024]
Abstract
The adsorption properties toward methyl orange (MO) were evaluated for poly[2-methyl-1H-indole] and its derivatives. The influence of pH, ionic strength of solution, composition, and amount of sorbent on the adsorption of MO dye was investigated; the kinetics of dye adsorption was studied. The adsorption isotherms were analyzed using different models of sorption equilibrium. The presence of chemical interaction between polyindoles and dye was proved by IR and UV spectroscopy methods. The sorption of MO with polymers is realized mainly due to the formation of electrostatic interactions between the sulfogroup of the dye and the imino group of the sorbent. Microphotographs demonstrate the change in the morphology of polyindoles after adsorption, which further confirms the structural changes in the polymers. It was found that the main factors affecting the sorption capacity of the studied materials are the position and nature of substituents in the polymers and the sorption conditions. For example, polyindoles containing a methoxy group in their structure (o-OMePIn and m-OMePIn) have the best sorption activity. These polymers are effective in adsorbing dyes, which means that they can be used in wastewater treatment.
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Affiliation(s)
- Gulsum S Usmanova
- Laboratory of Organic Functional Materials, Ufa Institute of Chemistry of the Russian Academy of Sciences, Ufa 450054, Russia
| | - Lyaysan R Latypova
- Laboratory of Organic Functional Materials, Ufa Institute of Chemistry of the Russian Academy of Sciences, Ufa 450054, Russia
| | - Akhat G Mustafin
- Laboratory of Organic Functional Materials, Ufa Institute of Chemistry of the Russian Academy of Sciences, Ufa 450054, Russia
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Jena D, Bej AK, Giri AK, Mishra PC. Amino-functionalized novel biosorbent for effective removal of fluoride from water: process optimization using artificial neural network and mechanistic insights. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:29415-29433. [PMID: 38575821 DOI: 10.1007/s11356-024-33046-x] [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: 07/26/2023] [Accepted: 03/19/2024] [Indexed: 04/06/2024]
Abstract
Aqueous fluoride (F - ) pollution is a global threat to potable water security. The present research envisions the development of novel adsorbents from indigenous Limonia acidissima L. (fruit pericarp) for effective aqueous defluoridation. The adsorbents were characterized using instrumental analysis, e.g., TGA-DTA, ATR-FTIR, SEM-EDS, and XRD. The batch-mode study was performed to investigate the influence of experimental variables. The artificial neural network (ANN) model was employed to validate the adsorption. The dataset was fed to a backpropagation learning algorithm of the ANN (BPNN) architecture. The four-ten-one neural network model was considered to be functioning correctly with an absolute-relative-percentage error of 0.633 throughout the learning period. The results easily fit the linearly transformed Langmuir isotherm model with a correlation coefficient( R 2 ) > 0.997. The maximumF - removal efficiency was found to be 80.8 mg/g at the optimum experimental condition of pH 7 and a dosage of 6 g/L at 30 min. The ANN model and experimental data provided a high degree of correlation (R 2 = 0.9964), signifying the accuracy of the model in validating the adsorption experiments. The effects of interfering ions were studied with realF - water. The pseudo-second-order kinetic model showed a good fit to the equilibrium dataset. The performance of the adsorbent was also found satisfactory with field samples and can be considered a potential adsorbent for aqueous defluoridation.
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Affiliation(s)
- Dipankar Jena
- Department of Chemistry, Fakir Mohan University, Vyasa Vihar, Balasore, Odisha, 756089, India.
| | - Anjan Kumar Bej
- Department of Chemistry, Fakir Mohan University, Vyasa Vihar, Balasore, Odisha, 756089, India
| | - Anil Kumar Giri
- Centre of Excellence for Bio-Resource Management and Energy Conservation Material Development, Fakir Mohan University, Vyasa Vihar, Balasore, Odisha, 756089, India
| | - Prakash Chandra Mishra
- Department of Environmental Science, Fakir Mohan University, Vyasa Vihar, Balasore, Odisha, 756089, India
- Centre of Excellence for Bio-Resource Management and Energy Conservation Material Development, Fakir Mohan University, Vyasa Vihar, Balasore, Odisha, 756089, India
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Momina M, Ahmad K. Synthesis of biodegradable sodium alginate-based carbon dot-nanomagnetic composite (SA-FOCD) for enhanced water remediation using ANN modelling, RSM optimization, and economic analysis. Int J Biol Macromol 2024; 263:130253. [PMID: 38368976 DOI: 10.1016/j.ijbiomac.2024.130253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Revised: 12/04/2023] [Accepted: 02/15/2024] [Indexed: 02/20/2024]
Abstract
This study involves the synthesis of a magnetic‑sodium alginate bio-composite embedded with carbon dots, designed to eliminate pollutants like dyes and metal ions and tackle environmental issues. The modified particles are effectively incorporated into the biopolymers for improved adsorption and regeneration performance using an economically viable and environmentally sustainable process. The composite's surface morphology and chemical structure have been extensively characterized through various analytical techniques. It has been found that CD-modified nanoparticles demonstrate good dispersion, abundance in functional groups, and excellent adsorption performance. The adsorption process variables have been optimized using Response Surface Methodology (RSM), resulting in a maximum adsorption capacity of 232.44 mg/g achieved under optimal conditions. An Artificial Neural Network (ANN) model with a topology of 3-5-5-1 is constructed to predict the adsorption capacity of composite, exhibiting superior predictive performance. The statistical physical model was also performed to understand the adsorption mechanism and orientation of dye molecules attached to the surface of the composite. The adsorption capacity using statistical physical method was found to be 467.57 mg/g. The composite exhibits good adsorption and regeneration performance in the column adsorption study. Furthermore, a detailed cost analysis of the synthesized composite was performed, ensuring its economic viability in real-world applications.
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Affiliation(s)
- Momina Momina
- Department of Civil Engineering, Jamia Millia Islamia, New Delhi-110025, India.
| | - Kafeel Ahmad
- Department of Civil Engineering, Jamia Millia Islamia, New Delhi-110025, India
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Wu W, Li P, Wang M, Liu H, Zhao X, Wu C, Ren J. Comprehensive Evaluation of Polyaniline-Doped Lignosulfonate in Adsorbing Dye and Heavy Metal Ions. Int J Mol Sci 2023; 25:133. [PMID: 38203303 PMCID: PMC10779345 DOI: 10.3390/ijms25010133] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Revised: 12/14/2023] [Accepted: 12/20/2023] [Indexed: 01/12/2024] Open
Abstract
Lignosulfonate/polyaniline (LS/PANI) nanocomposite adsorbent materials were prepared by the chemical polymerization of lignosulfonate with an aniline monomer as a dopant and structure-directing agent, and the adsorption behavior of dyes as well as heavy metal ions was investigated. LS/PANI composites were used as dye adsorbents for the removal of different cationic dyes (malachite green, methylene blue, and crystal violet). The adsorption behavior of LS/PANI composites as dye adsorbents for malachite green was investigated by examining the effects of the adsorbent dosage, solution pH, initial concentration of dye, adsorption time, and temperature on the adsorption properties of this dye. The following conclusions were obtained. The optimum adsorption conditions for the removal of malachite green dye when LS/PANI composites were used as malachite green dye adsorbents were as follows: an adsorbent dosage of 20 mg, an initial concentration of the dye of 250 mg/L, an adsorption time of 300 min, and a temperature of 358 K. The LS/PANI composite adsorbed malachite green dye in accordance with the Langmuir adsorption model and pseudo-second-order kinetic model, which belongs to chemisorption-based monomolecular adsorption, and the equilibrium adsorption amount was 245.75 mg/g. In particular, the adsorption of heavy metal ion Pb2+ was investigated, and the removal performance was also favorable for Pb2+.
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Affiliation(s)
- Wenjuan Wu
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing 210037, China; (P.L.)
- College of Light Industry and Food Engineering, Nanjing Forestry University, Nanjing 210037, China (J.R.)
| | - Penghui Li
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing 210037, China; (P.L.)
- College of Light Industry and Food Engineering, Nanjing Forestry University, Nanjing 210037, China (J.R.)
| | - Mingkang Wang
- College of Light Industry and Food Engineering, Nanjing Forestry University, Nanjing 210037, China (J.R.)
| | - Huijun Liu
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China;
| | - Xiufu Zhao
- College of Light Industry and Food Engineering, Nanjing Forestry University, Nanjing 210037, China (J.R.)
| | - Caiwen Wu
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing 210037, China; (P.L.)
- College of Light Industry and Food Engineering, Nanjing Forestry University, Nanjing 210037, China (J.R.)
| | - Jianpeng Ren
- College of Light Industry and Food Engineering, Nanjing Forestry University, Nanjing 210037, China (J.R.)
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Qurtulen, Ahmad A. Green tea waste-derived carbon dots: efficient degradation of RhB dye and selective sensing of Cu 2+ ions. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:121630-121646. [PMID: 37957492 DOI: 10.1007/s11356-023-30735-x] [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: 08/15/2023] [Accepted: 10/25/2023] [Indexed: 11/15/2023]
Abstract
Herein, we have synthesized carbon dots (CDs) using a one-step hydrothermal method from green tea waste, a biomass-derived source with high fluorescent properties and excellent solubility in water. The synthesis of CDs was confirmed through a comprehensive range of characterization techniques, including HRTEM (high-resolution transmission electron microscopy), XPS (X-ray photoelectron spectroscopy), and EDX (energy-dispersive X-ray spectroscopy). The optical properties of the synthesized CDs were assessed using UV-Vis spectroscopy and fluorescence (FL) spectroscopy. The CDs displayed exceptional stability across a wide pH range and various concentrations. Moreover, these CDs exhibited a photoluminescence quantum yield (PLQY) of 21.6%, indicating their efficiency in emitting fluorescent light upon excitation. The CDs also showcased their prowess in fluorometrically detecting Cu2+ ions, displaying high sensitivity and selectivity. They presented two distinct linear ranges: 0.02 to 50 µM and 50 to 100 µM, with recovery rates ranging from 94.2 to 104.06%. Moreover, under visible light irradiation, the CDs exhibited significant efficiency in the photocatalytic removal of dyes. Specifically, the CDs achieved degradation rate of 97.89% for Rhodamine B (RhB) within a 30-min irradiation period. In the context of RhB adsorption, it is evident that the experimental data align more closely with the Freundlich isotherm than the Langmuir isotherm. This is substantiated by a higher R2 value (0.97) for the Freundlich isotherm model compared to the Langmuir adsorption isotherm model (0.93). Notably, the adsorption kinetics was effectively described by pseudo first-order kinetics models. Overall, these results highlight the promising potential of CDs in applications such as environmental remediation and waste treatment processes due to their photocatalytic and sensing capabilities.
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Affiliation(s)
- Qurtulen
- Department of Chemistry, Aligarh Muslim University, Aligarh, 202002, India.
| | - Anees Ahmad
- Department of Chemistry, Aligarh Muslim University, Aligarh, 202002, India
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Huang X, Qiu C, Chen Y, Zhang X, Qi J, Jiang Y, de Hoop CF, Huang X. Nanocellulose-based polyurethane foam adsorbent for pressure-driven dye-contaminated water purification. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:93817-93829. [PMID: 37523089 DOI: 10.1007/s11356-023-29098-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Accepted: 07/28/2023] [Indexed: 08/01/2023]
Abstract
Dye-contaminated water has caused a worldwide pollution, which is threatening aquatic organisms and human health. In this work, a pressure-driven foam adsorbent (PFA) was bioinspired from the tapestry turban for purifying the dye-contaminated water. The PFA was prepared using an one-step method from nanocellulose (NC), amino-functionalized ZIF-8 (ZIF-8-NH2), and high resilience polyurethane foam (PUF). It was applied to efficiently remove methyl orange (MO) and crystal violet (CV) dyes from dye-contaminated waste solutions. The maximum adsorption capacity of PFA for MO and CV was 225.9 mg/g (25 °C, pH = 2) and 41.6 mg/g (25 °C, pH = 10), respectively, which were acceptable as compared with the reported works. The dyes could be efficiently removed from various river water samples. After 5 cycles, the removal efficiencies of MO and CV decreased from 92.0% and 85.7% to 84.7% and 76.1%, respectively. Moreover, the PFA relied on pressure-driven force to release the purified water under a low pressure.
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Affiliation(s)
- Xiaobo Huang
- College of Forestry, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China
| | - Chongpeng Qiu
- College of Forestry, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China
| | - Yuanlong Chen
- College of Forestry, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China
| | - Xuefeng Zhang
- Departent of Sustainable Bioproducts, Mississippi State University, Starkville, MS, 39762, USA
| | - Jinqiu Qi
- College of Forestry, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China
| | - Yongze Jiang
- College of Forestry, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China
| | - Cornelis F de Hoop
- School of Renewable Natural Resources, Louisiana State University Agricultural Center, Baton Rouge, LA, 70803, USA
| | - Xingyan Huang
- College of Forestry, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China.
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Tao D, Tian C, Zhou Y, Pei L, Zhang F. Effective removal of brilliant green with magnetic barium phosphate composites: factor analysis and mechanism study. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:50364-50375. [PMID: 36795211 DOI: 10.1007/s11356-023-25819-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2022] [Accepted: 02/05/2023] [Indexed: 04/16/2023]
Abstract
In this work, magnetic barium phosphate (FBP) composites with different content of commercial Fe3O4 nanoparticles were easily prepared by a one-step hydrothermal method. FBP composites with a magnetic content of 3% (FBP3) were studied as the example for the removal of an organic pollutant (Brilliant Green, BG) from the synthetic medium. The adsorption study was executed under the variation of different experimental conditions, such as solution pH (5 ~ 11), dosage (0.02 ~ 0.20 g), temperature (293 ~ 323 K), and the contact time (0 ~ 60 min) on the removal of BG. For comparison purposes, the one-factor-at-a-time (OFAT) approach and Doehlert matrix (DM) were both employed to investigate the factor impacts involved. FBP3 showed a high adsorption capacity of 1419.3 ± 10.0 mg/g for at 25 °C and pH = 6.31. The kinetics study revealed the pseudo-second-order kinetic model as the best-fitted model, and the thermodynamic data fit well with the Langmuir model. The possible adsorption mechanisms involved are the electrostatic interaction and/or hydrogen bonding of PO43-…N+/C-H and HSO4-…Ba2+ between FBP3 and BG. Furthermore, FBP3 showed good easy reusability and high capacities for BG removal. Our results provide new insights for developing low-cost, efficient, and reusable adsorbent to remove BG from industrial wastewater.
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Affiliation(s)
- Dan Tao
- College of Science, Nanjing Agricultural University, Nanjing, 210095, China
| | - Chengxuan Tian
- College of Science, Nanjing Agricultural University, Nanjing, 210095, China
| | - Yuxin Zhou
- College of Science, Nanjing Agricultural University, Nanjing, 210095, China
| | - Luyao Pei
- College of Science, Nanjing Agricultural University, Nanjing, 210095, China
| | - Fan Zhang
- College of Science, Nanjing Agricultural University, Nanjing, 210095, China.
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Enhanced removal of anionic Methyl Orange azo dye by an Iron oxide (Fe3O4) loaded Lotus leaf powder (LLP@Fe3O4) composite: Synthesis, characterization, kinetics, isotherms, and thermodynamic perspectives. INORG CHEM COMMUN 2023. [DOI: 10.1016/j.inoche.2023.110625] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/18/2023]
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Pellenz L, de Oliveira CRS, da Silva Júnior AH, da Silva LJS, da Silva L, Ulson de Souza AA, de Souza SMDAGU, Borba FH, da Silva A. A comprehensive guide for characterization of adsorbent materials. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2022.122435] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Recent Advances in the Removal of Organic Dyes from Aqueous Media with Conducting Polymers, Polyaniline and Polypyrrole, and Their Composites. Polymers (Basel) 2022; 14:polym14194243. [PMID: 36236189 PMCID: PMC9573281 DOI: 10.3390/polym14194243] [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: 09/07/2022] [Revised: 10/02/2022] [Accepted: 10/04/2022] [Indexed: 12/07/2022] Open
Abstract
Water pollution by organic dyes, and its remediation, is an important environmental issue associated with ever-increasing scientific interest. Conducting polymers have recently come to the forefront as advanced agents for removing dye. The present review reports on the progress represented by the literature published in 2020–2022 on the application of conducting polymers and their composites in the removal of dyes from aqueous media. Two composites, incorporating the most important polymers, polyaniline, and polypyrrole, have been used as efficient dye adsorbents or photocatalysts of dye decomposition. The recent application trends are outlined, and future uses also exploiting the electrical and electrochemical properties of conducting polymers are offered.
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Shi X, Cheng C, Peng F, Hou W, Lin X, Wang X. Adsorption properties of graphene materials for pesticides: structure effect. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.119967] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
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