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Ma G, Lan D, Zhang Y, Sun X, Jia Z, Wu G, Bu G, Yin P. Microporous Cobalt Ferrite with Bio-Carbon Loosely Decorated to Construct Multi-Functional Composite for Dye Adsorption, Anti-Bacteria and Electromagnetic Protection. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024:e2404449. [PMID: 39011980 DOI: 10.1002/smll.202404449] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2024] [Revised: 06/30/2024] [Indexed: 07/17/2024]
Abstract
Currently, facing electromagnetic protection requirement under complex aqueous environments, the bacterial reproduction and organic dye corrosion may affect the composition and micro-structures of absorbers to weaken their electromagnetic properties. To address such problems, herein, a series of CoFe2O4@BCNPs (cobalt ferrite @ bio-carbon nanoparticles) composites are synthesized via co-hydrothermal and calcining process. The coupling of magnetic cobalt ferrite and dielectric bio-carbon derived from Apium can endow the composite multiple absorption mechanisms and matched impedance for effective microwave absorption, attaining a bandwidth of 8.12 GHz at 2.36 mm and an intensity of -49.85 dB at 3.0 mm. Due to the ROS (reactive oxygen species) stimulation ability and heavy metal ions of cobalt ferrite, the composite realizes an excellent antibacterial efficiency of 99% against Gram negative bacteria of Escherichia coli. Moreover, the loose porous layer of surface stacked bio-carbon can promote the adsorption of methylene blue for subsequent eliminating, a high removal rate of 90.37% for organic dye can be also achieved. This paper offers a new insight for rational design of composite's component and micro-structure to construct multi-functional microwave absorber for satisfying the electromagnetic protection demand in complicated environments.
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Affiliation(s)
- Guojuan Ma
- College of Science, Sichuan Agricultural University, Ya'an, 625014, P. R. China
| | - Di Lan
- School of Materials Science and Engineering, Hubei University of Automotive Technology, Shiyan, 442002, P. R. China
| | - Yi Zhang
- College of Science, Sichuan Agricultural University, Ya'an, 625014, P. R. China
| | - Xiyuan Sun
- College of Science, Sichuan Agricultural University, Ya'an, 625014, P. R. China
| | - Zirui Jia
- Institute of Materials for Energy and Environment, State Key Laboratory of Bio-fibers and Eco-textiles, College of Materials Science and Engineering, Qingdao University, Qingdao, 266071, P. R. China
| | - Guanglei Wu
- Institute of Materials for Energy and Environment, State Key Laboratory of Bio-fibers and Eco-textiles, College of Materials Science and Engineering, Qingdao University, Qingdao, 266071, P. R. China
| | - Guixian Bu
- College of Life Science, Sichuan Agricultural University, Ya'an, 625014, P. R. China
| | - Pengfei Yin
- College of Science, Sichuan Agricultural University, Ya'an, 625014, P. R. China
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Kumar V, Sharma N, Panneerselvam B, Dasarahally Huligowda LK, Umesh M, Gupta M, Muzammil K, Zahrani Y, Malmutheibi M. Lignocellulosic biomass for biochar production: A green initiative on biowaste conversion for pharmaceutical and other emerging pollutant removal. CHEMOSPHERE 2024; 360:142312. [PMID: 38761824 DOI: 10.1016/j.chemosphere.2024.142312] [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] [Revised: 03/25/2024] [Accepted: 05/09/2024] [Indexed: 05/20/2024]
Abstract
Lignocellulosic waste generation and their improper disposal has accelerated the problems associated with increased greenhouse gas emissions and associated environmental pollution. Constructive ways to manage and mitigate the pollution associated with lignocellulosic waste has propelled the research on biochar production using lignocellulose-based substrates. The sustainability of various biochar production technologies in employing lignocellulosic biomass as feedstock for biochar production not only aids in the lignocellulosic biomass valorization but also helps in carbon neutralization and carbon utilization. Functionalization of biochar through various physicochemical methods helps in improving their functional properties majorly by reducing the size of the biochar particles to nanoscale and modifying their surface properties. The usage of engineered biochar as nano adsorbents for environmental applications like dye absorption, removal of organic pollutants and endocrine disrupting compounds from wastewater has been the thrust areas of research in the past few decades. This review presents a comprehensive outlook on the up-to-date research findings related to the production and engineering of biochar from lignocellulosic biomass and their applications in environmental remediation especially with respect to wastewater treatment. Further a detailed discussion on various biochar activation methods and the future scope of biochar research is presented in this review work.
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Affiliation(s)
- Vinay Kumar
- Biomaterials and Tissue Engineering (BITE) Laboratory, Department of Community Medicine, Saveetha Medical College and Hospital, Saveetha Institute of Medical and Technical Sciences (SIMATS), Chennai, Thandalam, 602105, India.
| | - Neha Sharma
- Department of Biochemistry, Saveetha Medical College and Hospital, Saveetha Institute of Medical and Technical Sciences (SIMATS), Chennai, Thandalam, 602105, India
| | - Balamurugan Panneerselvam
- Center of Excellence in Interdisciplinary Research for Sustainable Development, Chulalongkorn University, Bangkok, 10330, Thailand; Department of Community Medicine, Saveetha Medical College, SIMATS, Chennai, 602105, India
| | | | - Mridul Umesh
- Department of Life Sciences, CHRIST (Deemed to be University), Bengaluru, 560029, Karnataka, India
| | - Manish Gupta
- Chitkara Centre for Research and Development, Chitkara University, Himachal Pradesh, 174103, India
| | - Khursheed Muzammil
- Department of Public Health, College of Applied Medical Sciences, Khamis Mushait Campus, King Khalid University, Abha, 62561, Saudi Arabia
| | - Yousef Zahrani
- Department of Public Health, College of Applied Medical Sciences, Khamis Mushait Campus, King Khalid University, Abha, 62561, Saudi Arabia
| | - Musa Malmutheibi
- Department of Public Health, College of Applied Medical Sciences, Khamis Mushait Campus, King Khalid University, Abha, 62561, Saudi Arabia
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Wasilewska M, Derylo-Marczewska A, Marczewski AW. Equilibrium and Kinetic Studies on Adsorption of Neutral and Ionic Species of Organic Adsorbates from Aqueous Solutions on Activated Carbon. Molecules 2024; 29:3032. [PMID: 38998985 PMCID: PMC11243464 DOI: 10.3390/molecules29133032] [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: 05/29/2024] [Revised: 06/18/2024] [Accepted: 06/24/2024] [Indexed: 07/14/2024] Open
Abstract
This work presents comprehensive studies of the adsorption of neutral and ionic forms of organic adsorbates from aqueous solutions on activated carbon. The influence of pH on the equilibrium and kinetics of the adsorption of methylene blue (MB) and organic acids, benzoic (BA), 2-nitrobenzoic (2-NBA), 3-nitrobenzoic (3-NBA), and 4-nitrobenzoic (4-NBA) acid, was investigated. Experimental adsorption isotherms were analyzed using the generalized Langmuir isotherm equation (R2 = 0.932-0.995). Adsorption rate data were studied using multiple adsorption kinetics equations, of which the multi-exponential equation gave the best fit quality (R2 - 1 = (6.3 × 10-6)-(2.1 × 10-3)). The half-time was also used to represent the effect of pH on adsorption kinetics. Strong dependences of the adsorption efficiency on the solution pH were demonstrated. In the case of organic acid adsorption, the amount and rate of this process increased with a decrease in pH. Moreover, larger adsorbed amounts of methylene blue were recorded in an alkaline environment in a relatively short time. The maximum absorbed amounts were 11.59 mmol/g, 6.57 mmol/g, 9.38 mmol/g, 2.70 mmol/g, and 0.24 mmol/g for BA, 2NBA, 3-NBA, 4-NBA, and MB. The pure activated carbon and the selected samples after adsorption were investigated using thermal analysis and X-ray photoelectron spectroscopy.
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Affiliation(s)
- Małgorzata Wasilewska
- Department of Physical Chemistry, Institute of Chemical Sciences, Maria Curie-Sklodowska University, Maria Curie-Sklodowska Sq. 3, 20-031 Lublin, Poland;
| | - Anna Derylo-Marczewska
- Department of Physical Chemistry, Institute of Chemical Sciences, Maria Curie-Sklodowska University, Maria Curie-Sklodowska Sq. 3, 20-031 Lublin, Poland;
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Duarte MP, Adeola AO, Fuoco G, Jargaille TJ, Naccache R. Efficient Decaffeination with Recyclable Magnetic Microporous Carbon from Renewable Sources: Kinetics and Isotherm Analysis. ENVIRONMENTAL RESEARCH 2024; 258:119446. [PMID: 38909946 DOI: 10.1016/j.envres.2024.119446] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2023] [Revised: 06/11/2024] [Accepted: 06/18/2024] [Indexed: 06/25/2024]
Abstract
Rapid global urbanization and population growth have ignited an alarming surge in emerging contaminants in water bodies, posing health risks, even at trace concentrations. To address this challenge, novel water treatment and reuse technologies are required as current treatment systems are associated with high costs and energy requirements. These drawbacks provide additional incentives for the application of cost-effective and sustainable biomass-derived activated carbon, which possesses high surface area and low toxicity. Herein, we synthesized microporous activated carbon (MAC) and its magnetic derivative (m-MAC) from tannic acid to decaffeinate contaminated aqueous solutions. Detailed characterization using SEM, BET, and PXRD revealed a very high surface area (>1800 m2/g) and a highly porous, amorphous, heterogeneous sponge-like structure. Physicochemical and thermal analyses using XPS, TGA, and EDS confirmed thermal stability, unique surface moieties, and homogeneous elemental distribution. High absorption performance (>96 %) and adsorption capacity (287 and 394 mg/g) were recorded for m-MAC and MAC, respectively. Mechanistic studies showed that the sorption of caffeine is in tandem with multilayer and chemisorptive mechanisms, considering the models' correlation and error coefficients. π-π stacking and hydrogen bonding were among the interactions that could facilitate MAC-Caffeine and m-MAC-Caffeine bonding interactions. Regeneration and reusability experiments revealed adsorption efficiency ranging from 90.5-98.4 % for MAC and 88.6-93.7 % for m-MAC for five cycles. Our findings suggest that MAC and its magnetic derivative are effective for caffeine removal, and potentially other organic contaminants with the possibility of developing commercially viable and cost-effective water polishing tools.
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Affiliation(s)
- Michelle P Duarte
- Department of Chemistry and Biochemistry and the Centre for NanoScience Research, Concordia University, Montreal, QC, H4B 1R6, Canada; Quebec Centre for Advanced Materials, Department of Chemistry and Biochemistry, Concordia University, Montreal, QC, H4B 1R6, Canada
| | - Adedapo O Adeola
- Department of Chemistry and Biochemistry and the Centre for NanoScience Research, Concordia University, Montreal, QC, H4B 1R6, Canada; Quebec Centre for Advanced Materials, Department of Chemistry and Biochemistry, Concordia University, Montreal, QC, H4B 1R6, Canada.
| | - Gianluca Fuoco
- Department of Chemistry and Biochemistry and the Centre for NanoScience Research, Concordia University, Montreal, QC, H4B 1R6, Canada; Quebec Centre for Advanced Materials, Department of Chemistry and Biochemistry, Concordia University, Montreal, QC, H4B 1R6, Canada
| | - Tyler J Jargaille
- Department of Chemistry and Biochemistry and the Centre for NanoScience Research, Concordia University, Montreal, QC, H4B 1R6, Canada; Quebec Centre for Advanced Materials, Department of Chemistry and Biochemistry, Concordia University, Montreal, QC, H4B 1R6, Canada
| | - Rafik Naccache
- Department of Chemistry and Biochemistry and the Centre for NanoScience Research, Concordia University, Montreal, QC, H4B 1R6, Canada; Quebec Centre for Advanced Materials, Department of Chemistry and Biochemistry, Concordia University, Montreal, QC, H4B 1R6, Canada.
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Cai Y, Yang J, Ran Z, Bu F, Chen X, Shaaban M, Peng QA. Optimizing Typha biochar with phosphoric acid modification and ferric chloride impregnation for hexavalent chromium remediation in water and soil. CHEMOSPHERE 2024; 354:141739. [PMID: 38503383 DOI: 10.1016/j.chemosphere.2024.141739] [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: 01/22/2024] [Revised: 02/21/2024] [Accepted: 03/15/2024] [Indexed: 03/21/2024]
Abstract
Considering the persistent and covert nature of heavy metal soil contamination, the sustainable development of ecological environments and food safety is at significant risk. Our study focuses on remediating soils contaminated with chromium (Cr); we introduce an advanced remediation material, iron oxide phosphoric acid-loaded activated biochar (HFBC), synthesized through pyrolysis. This HFBC displays greater microporosity, fewer impurities, and enhanced efficiency for the remediation process. Our research utilized a comprehensive set of analytical techniques, including Scanning Electron Microscopy (SEM), Fourier Transform Infrared Spectroscopy (FTIR), and X-ray Photoelectron Spectroscopy (XPS), alongside adsorption studies to elucidate the Cr removal mechanism. The effectiveness of HFBC in remediation was influenced by several factors: the pH level, dosage of HFBC, the initial concentration of Cr, and the ambient temperature. Our results indicated an optimal chromium (VI) adsorption capacity of 55.5 mg/g by HFBC at a pH of 6.0 and a temperature of 25 °C, with the process adhering to the pseudo-second-order kinetic model and the Langmuir adsorption isotherm, thus suggesting spontaneity in the uptake method. Moreover, this mechanism encompasses both adsorption and reduction reactions. Using HFBC in pot experiments with cabbage indicated not only an increase in soil pH and cation exchange capacity (CEC), but also a surge in bacterial community abundance. Significant reductions in bioavailable chromium were also recorded. Interestingly, HFBC addition bolstered the growth of cabbage, while concurrently diminishing chromium accumulation within the plant, particularly notable as the HFBC application rate increased. In summation, the HFBC produced in our study has demonstrated convincing efficacy in removing chromium from aqueous solutions and soil. Moreover, the positive agronomic implications of its use, such as enhanced plant growth and reduced heavy metal uptake by plants, indicate its high potential for operational value in the domain of environmental remediation of heavy metals.
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Affiliation(s)
- Yajun Cai
- College of Environmental Engineering, Wuhan Textile University, Wuhan, 430200, China; Clean Production of Textile Printing and DyeingEngineering Research Center, Ministry of Education, Wuhan, 430200, China.
| | - Jianwei Yang
- College of Environmental Engineering, Wuhan Textile University, Wuhan, 430200, China.
| | - Zhonglyu Ran
- College of Environmental Engineering, Wuhan Textile University, Wuhan, 430200, China.
| | - Fantong Bu
- College of Environmental Engineering, Wuhan Textile University, Wuhan, 430200, China.
| | - Xu Chen
- College of Environmental Engineering, Wuhan Textile University, Wuhan, 430200, China.
| | - Muhammad Shaaban
- College of Agriculture, Henan University of Science and Technology, Luoyang, China.
| | - Qi-An Peng
- College of Environmental Engineering, Wuhan Textile University, Wuhan, 430200, China; Clean Production of Textile Printing and DyeingEngineering Research Center, Ministry of Education, Wuhan, 430200, China.
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Aslam A, Batool F, Noreen S, Abdelrahman EA, Mustaqeem M, Albalawi BFA, Ditta A. Metal Oxide-Impregnated Biochar for Azo Dye Remediation as Revealed through Kinetics, Thermodynamics, and Response Surface Methodology. ACS OMEGA 2024; 9:4300-4316. [PMID: 38313481 PMCID: PMC10832006 DOI: 10.1021/acsomega.3c05321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/23/2023] [Revised: 12/22/2023] [Accepted: 01/08/2024] [Indexed: 02/06/2024]
Abstract
This study reports for the first time the adsorption capacity of a novel adsorbent Croton bonplandianus Baill. biochar. Its adsorption capacity was further enhanced by loading magnetic composites on it, which makes it an efficient medium for the adsorption of dyes. Two azo dyes, Basic Brown 1 (BB1) and Basic Orange 2 (BO2), were studied for their effective adsorption from aqueous media. A comprehensive characterization was performed by using scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR) to study the properties of Fe2O3-loaded C. bonplandianus Baill. biochar (FO-CBPBB). A series of batch experiments were conducted to optimize various parameters (pH, contact time, adsorbent amount, initial BB1 and BO2 concentrations, and temperature) for the maximum adsorption of BB1 and BO2 on the FO-CBPBB adsorbent. The percentage of BB1 and BO2 dyes that adsorb to FO-CBPBB under the best experimental circumstances (pH of solution 7, contact time 80 min, temperature of solution 40 °C, initial BB1 and BO2 dye concentrations 80 mg L-1, and adsorbent dose 1 g L-1) was 93 and 95%, respectively. The best adsorption of BB1 and BO2 was accomplished by optimizing the effects of several factors, including the starting dye concentration, contact time, and temperature, based on the central composite design. The Freundlich and Langmuir isotherm models were used to examine the equilibrium data. The Langmuir isotherm with the greatest adsorption capacity and R2 value effectively captured the experimental results. When kinetic parameters were investigated, it was found that pseudo-second-order was appropriate, reflecting the fact that the dye-adsorbent interaction was the rate-controlling factor in this study. The sorption process was endothermic and spontaneous, as shown by the thermodynamic variables. Based on the interaction between the adsorbent and azo dyes, it was concluded that the adsorption process was electrostatic in nature. Adsorbents that have been synthesized can effectively remove azo dyes from wastewater. Excellent regeneration efficiency was exhibited by FO-CBPBB, which makes it an eco-friendly and cost-effective alternative to other costly techniques applied for water purification.
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Affiliation(s)
- Adeel Aslam
- Institute
of Chemistry, University of Sargodha, Sargodha 40100, Pakistan
| | - Fozia Batool
- Institute
of Chemistry, University of Sargodha, Sargodha 40100, Pakistan
| | - Sobia Noreen
- Institute
of Chemistry, University of Sargodha, Sargodha 40100, Pakistan
| | - Ehab A. Abdelrahman
- Department
of Chemistry, College of Science, Imam Mohammad
Ibn Saud Islamic University (IMSIU), Riyadh 11623, Saudi Arabia
- Chemistry
Department, Faculty of Science, Benha University, Benha 13518, Egypt
| | - Muhammad Mustaqeem
- Institute
of Chemistry, University of Sargodha, Sargodha 40100, Pakistan
| | | | - Allah Ditta
- Department
of Environmental Sciences, Shaheed Benazir
Bhutto University Sheringal, Upper Dir 18000, Pakistan
- School of
Biological Sciences, The University of Western
Australia, 35 Stirling
Highway, Perth, WA 6009, Australia
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Arslan Y, Tomul F, Kınaytürk NK, Dong NT, Trak D, Kabak B, Tran HN. Important role of pore-filling mechanism in separating naproxen from water by micro-mesoporous carbonaceous material. WATER ENVIRONMENT RESEARCH : A RESEARCH PUBLICATION OF THE WATER ENVIRONMENT FEDERATION 2024; 96:e10966. [PMID: 38226502 DOI: 10.1002/wer.10966] [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: 07/22/2023] [Revised: 11/21/2023] [Accepted: 11/30/2023] [Indexed: 01/17/2024]
Abstract
Commercial micro-mesoporous carbonaceous material (MCM; 56.8% mesopores) was applied for investigating the removal phenomenon of naproxen drug in aqueous solutions through batch adsorption experiments. Results demonstrated that the adsorption capacity of MCM to naproxen was slightly affected by different pHeq (2.0-11) and ionic strength (0-1 M NaCl). Adsorption kinetics, isotherms, thermodynamics, and mechanisms were evaluated at pH 7.0. Adsorption kinetics indicated the rate constants for adsorption (0.2 × 10-3 L/(mg × min) and desorption (0.076/min) and the adsorption equilibrium constant (2.6 × 10-3 L/mg). Adsorption isotherm showed that MCM exhibited a high-affinity adsorption capacity to naproxen (even at low concentrations) and its Langmuir maximum adsorption capacity (Qmax ) was 252.7 mg/g at 25°C. Adsorption thermodynamics proved that the adsorption process was endothermic and physisorption (ΔH° = 9.66 kJ/mol). The analysis result of pore size distribution demonstrated that the internal pore structure of MCM was appropriate for adsorbing naproxen molecules. Pore-filing mechanism (pore diffusion phenomenon) was confirmed by a considerable decrease in BET-surface area (585 m2 /g) and total pore volume (0.417 cm3 /g) of MCM after adsorbing naproxen (~1000 mg/L and pH 7.0) at 5 min (341 and 0.256), 60 min (191 and 0.205), 120 min (183 and 0.193), 360 min (144 and 0.175), and 24 h (71.6 m2 /g and 0.123 cm3 /g, respectively). The pore diffusion occurred rapidly (even at the initial adsorption period of 5 min). The FTIR technique was applied to identify the existence of C-H···π and n-π interaction. π-π interaction (evaluated through ID /IG ratio and C=C band) played a minor contribution in adsorption mechanisms. The ID /IG ratio (determined by the Raman technique) of MCM before adsorption (1.195) was similar to that after adsorption (1.190), and the wavenumber (C=C band; its FTIR spectrum) slightly shifted from 1638 to 1634 cm-1 after adsorption. A decrease in the Qmax value of MCM from 249 to 217 (H2 O2 -oxidized MCM) or to 224 mg/g (HNO3 -oxidized MCM) confirmed the presence of π-π interaction. Electrostatic attraction was a minor contribution. MCM can serve as a promising material for removing naproxen from water environment through a pore-filling mechanism. PRACTITIONER POINTS: Pore-filling mechanism was proposed by comparing textural properties of MCM before and after adsorbing naproxen. C-H···π and n-π interactions were identified via FTIR technique. π-π interaction was observed by FTIR and Raman techniques. Oxidation of MCM with HNO3 or H2 O2 was a helpful method to explore π-π interaction. Electrostatic attraction was explained through studies: effects of pH and NaCl along with desorption.
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Affiliation(s)
- Yasin Arslan
- Faculty of Arts and Science, Nanoscience and Nanotechnology Department, Burdur Mehmet Akif Ersoy University, Burdur, Turkey
| | - Fatma Tomul
- Faculty of Arts and Science, Chemistry Department, Burdur Mehmet Akif Ersoy University, Burdur, Turkey
| | - Neslihan Kaya Kınaytürk
- Faculty of Arts and Science, Nanoscience and Nanotechnology Department, Burdur Mehmet Akif Ersoy University, Burdur, Turkey
| | - Nguyen Thanh Dong
- Institute of Environmental Technology, Vietnam Academy of Science and Technology, Hanoi, Vietnam
| | - Diğdem Trak
- Faculty of Arts and Science, Chemistry Department, Burdur Mehmet Akif Ersoy University, Burdur, Turkey
| | - Burcu Kabak
- Faculty of Arts and Science, Chemistry Department, Burdur Mehmet Akif Ersoy University, Burdur, Turkey
| | - Hai Nguyen Tran
- Center for Energy and Environmental Materials, Institute of Fundamental and Applied Sciences, Duy Tan University, Ho Chi Minh, Vietnam
- Faculty of Environmental and Chemical Engineering, Duy Tan University, Da Nang, Vietnam
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Yu J, Tian S, Yao A, Hu H, Lan J, Yang L, Du X, Lin S. Compressible polydopamine modified pomelo peel powder/poly(ethyleneimine)/κ-carrageenan aerogel with pH-tunable charge for selective removal of anionic and cationic dyes. Carbohydr Polym 2024; 323:121377. [PMID: 37940273 DOI: 10.1016/j.carbpol.2023.121377] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 08/16/2023] [Accepted: 09/08/2023] [Indexed: 11/10/2023]
Abstract
In this work, a novel biomass-based aerogel, polydopamine decorated pomelo peel powder/polyethyleneimine/κ-carrageenan (PPEKC) aerogel, was developed for dye wastewater treatment. The as-prepared PPEKC aerogel possessed a robust structure and good compressible resilience. As expected, this aerogel presented remarkable efficacy in eliminating both anionic and cationic dyes. The experimental maximum adsorption capacities were 2016.7 mg g-1 for congo red (CR) at pH = 5 and 1176.6 mg g-1 for methylene blue (MEB) at pH = 11, following with ultra-fast adsorption rates. The adsorption kinetics followed the pseudo-second-order model. The adsorption isotherms exhibited a stronger alignment with the Langmuir isotherm model for CR at 308 K and MEB at 288, 298, 308 K. The Freundlich isotherm model yielded a suitable fit for the adsorption of CR at 288 and 298 K. Thermodynamic analyses indicated that the removal of CR and MEB was spontaneous and endothermic. The adsorption mechanisms involved electrostatic interactions, π-π interactions, and hydrogen bonds. Intriguingly, it could achieve bidirectional selective adsorption of anionic and cationic dyes in the designed pH values, due to pH-tunable surface charge. Additionally, it also exhibited favorable reusability and antibacterial activity. Therefore, the as-prepared PPEKC aerogel could be a promising biosorbent for dye wastewater treatment.
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Affiliation(s)
- Jincheng Yu
- College of Biomass Science and Engineering, Sichuan University, Chengdu 610065, PR China
| | - Siyao Tian
- College of Biomass Science and Engineering, Sichuan University, Chengdu 610065, PR China
| | - Anrong Yao
- College of Biomass Science and Engineering, Sichuan University, Chengdu 610065, PR China
| | - Haoyi Hu
- College of Biomass Science and Engineering, Sichuan University, Chengdu 610065, PR China
| | - Jianwu Lan
- College of Biomass Science and Engineering, Sichuan University, Chengdu 610065, PR China; National Engineering Laboratory for Clean Technology of Leather Manufacture, Sichuan University, Chengdu 610065, PR China
| | - Lin Yang
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, AB T6G1H9, Canada
| | - Xiaosheng Du
- College of Biomass Science and Engineering, Sichuan University, Chengdu 610065, PR China; National Engineering Laboratory for Clean Technology of Leather Manufacture, Sichuan University, Chengdu 610065, PR China.
| | - Shaojian Lin
- College of Biomass Science and Engineering, Sichuan University, Chengdu 610065, PR China; National Engineering Laboratory for Clean Technology of Leather Manufacture, Sichuan University, Chengdu 610065, PR China.
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