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Hou K, Zhang S, Yin P, Liu T, Cao Y, Wang M, Zhan W, Wu L. Zinc Vaporization Induced Formation of Desired Ni Nanoparticles Coated with Ultrathin Carbon Shells for Efficient Electrocatalytic H 2 Production Coupling with Methanol Upgrading. ACS APPLIED MATERIALS & INTERFACES 2024; 16:52326-52338. [PMID: 39312398 DOI: 10.1021/acsami.4c10405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/25/2024]
Abstract
The integration of the hydrogen evolution reaction (HER) with the methanol oxidation reaction (MOR) has been demonstrated to be a viable strategy for the energy-saving generation of H2 and value-added formate, which relies primarily on highly active and cost-effective bifunctional electrocatalysts. Herein, an efficient electrocatalyst consisting of controllable Ni nanoparticles (NPs) coated with ultrathin graphitic carbon shells was obtained by the pyrolysis of a Ni-Zn metal-organic framework. Intriguingly, we found that zinc vaporization not only resulted in the relatively small Ni NPs but also ultrathin carbon shells (≤3 layers). The density functional theory simulations confirmed that these ultrathin carbon shells significantly influenced electrocatalytic activity by facilitating electron transfer from the Ni core to the carbon shell. The optimized Ni1(Zn)@C demonstrated high catalytic activity for both HER and MOR, and only a low potential of 97 mV at 10 mA cm-2 was required for HER and 1.48 V at 30 mA cm-2 for MOR. In a two-electrode electrocatalytic cell measurement, a cell voltage of 1.63 V was observed at 10 mA cm-2 in the presence of methanol, 240 mV lower than that without methanol.
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Affiliation(s)
- Kexian Hou
- Hubei Province Key Laboratory of Coal Conversion and New Carbon Materials, School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan 430081, China
| | - Shizhen Zhang
- Hubei Province Key Laboratory of Coal Conversion and New Carbon Materials, School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan 430081, China
| | - Peng Yin
- Hubei Province Key Laboratory of Coal Conversion and New Carbon Materials, School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan 430081, China
| | - Tao Liu
- Hubei Province Key Laboratory of Coal Conversion and New Carbon Materials, School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan 430081, China
| | - Yanfeng Cao
- Institute of Photonic Chips, School of Artificial Intelligence Science and Technology, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Mingxi Wang
- Key Laboratory of Biomass-based Materials for Environment & Energy in Petroleum & Chemical Industries, School of Chemical and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430205, China
| | - Weiting Zhan
- The State Key Laboratory for Refractories and Metallurgy, Key Laboratory for Ferrous Metallurgy and Resource Utilization of Ministry of Education, Wuhan University of Science and Technology, Wuhan 430081, China
| | - Ling Wu
- Hubei Province Key Laboratory of Coal Conversion and New Carbon Materials, School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan 430081, China
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2
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Salahshoori I, Wang Q, Nobre MAL, Mohammadi AH, Dawi EA, Khonakdar HA. Molecular simulation-based insights into dye pollutant adsorption: A perspective review. Adv Colloid Interface Sci 2024; 333:103281. [PMID: 39214024 DOI: 10.1016/j.cis.2024.103281] [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: 10/05/2023] [Revised: 06/20/2024] [Accepted: 08/21/2024] [Indexed: 09/04/2024]
Abstract
Growing concerns about environmental pollution have highlighted the need for efficient and sustainable methods to remove dye contamination from various ecosystems. In this context, computational methods such as molecular dynamics (MD), Monte Carlo (MC) simulations, quantum mechanics (QM) calculations, and machine learning (ML) methods are powerful tools used to study and predict the adsorption processes of dyes on various adsorbents. These methods provide detailed insights into the molecular interactions and mechanisms involved, which can be crucial for designing efficient adsorption systems. MD simulations, detailing molecular arrangements, predict dyes' adsorption behaviour and interaction energies with adsorbents. They simulate the entire adsorption process, including surface diffusion, solvent layer penetration, and physisorption. QM calculations, especially density functional theory (DFT), determine molecular structures and reactivity descriptors, aiding in understanding adsorption mechanisms. They identify stable adsorption configurations and interactions like hydrogen bonding and electrostatic forces. MC simulations predict equilibrium properties and adsorption energies by sampling molecular configurations. ML methods have proven highly effective in predicting and optimizing dye adsorption processes. These models offer significant advantages over traditional methods, including higher accuracy and the ability to handle complex datasets. These methods optimize adsorption conditions, clarify adsorbent functionalization roles, and predict dye removal efficiency under various conditions. This research explores MD, MC, QM, and ML approaches to connect molecular interactions with macroscopic adsorption phenomena. Probing these techniques provides insights into the dynamics and energetics of dye pollutants on adsorption surfaces. The findings will aid in developing and optimizing new materials for dye removal. This review has significant implications for environmental remediation, offering a comprehensive understanding of adsorption at various scales. Merging microscopic data with macroscopic observations enhances knowledge of dye pollutant adsorption, laying the groundwork for efficient, sustainable removal technologies. Addressing the growing challenges of ecosystem protection, this study contributes to a cleaner, more sustainable future.
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Affiliation(s)
- Iman Salahshoori
- Department of Chemical Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran; Department of Polymer Processing, Iran Polymer and Petrochemical Institute, P.O. Box 14965-115, Tehran, Iran.
| | - Qilin Wang
- School of Civil and Environmental Engineering, University of Technology Sydney, Ultimo, 2007, Australia
| | - Marcos A L Nobre
- São Paulo State University (Unesp), School of Technology and Sciences, Presidente Prudente, SP 19060-900, Brazil
| | - Amir H Mohammadi
- Discipline of Chemical Engineering, School of Engineering, University of KwaZulu-Natal, Howard College Campus, King George V Avenue, Durban 4041, South Africa.
| | - Elmuez A Dawi
- College of Humanities and Sciences, Department of Mathematics, and Science, Ajman University, P.O. Box 346, Ajman, United Arab Emirates
| | - Hossein Ali Khonakdar
- Department of Polymer Processing, Iran Polymer and Petrochemical Institute, P.O. Box 14965-115, Tehran, Iran
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Yang Y, Zhang W, Zhang L, Guo M, Xiang C, Ren M, Han Y, Shi J, Li H, Xu X. The development of multifunctional materials for water pollution remediation using pollen and sporopollenin. Int J Biol Macromol 2024; 273:133051. [PMID: 38862057 DOI: 10.1016/j.ijbiomac.2024.133051] [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: 10/25/2023] [Revised: 05/06/2024] [Accepted: 06/07/2024] [Indexed: 06/13/2024]
Abstract
Pollen is a promising material for water treatment owing to its renewable nature, abundant sources, and vast reserves. The natural polymer sporopollenin, found within pollen exine, possesses a distinctive layered porous structure, mechanical strength, and stable chemical properties, which can be utilized to prepare sporopollenin exine capsules (SECs). Leveraging these attributes, pollen or SECs can be used to develop water pollution remediation materials. In this review, the structure of pollen is first introduced, followed by the categorization of various methods for extracting SECs. Then, the functional expansion of pollen adsorbents, with an emphasis on their recyclability, reusability, and visual sensing capabilities, as opposed to mere functional group modification, is discussed. Furthermore, the progress made in utilizing pollen as a biological template for synthesizing catalysts is summarized. Intriguingly, pollen can also be engineered into self-propelled micromotors, enhancing its potential application in adsorption and catalysis. Finally, the challenges associated with the application of pollen in water pollution treatment are discussed. These challenges include the selection of environmentally friendly, non-toxic reagents in synthesizing pollen water remediation products and the large-scale application after synthesis. Moreover, the multifunctional synthesis and application of different water remediation products are prospected.
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Affiliation(s)
- Ying Yang
- School of Quality and Technical Supervision, Hebei University, Baoding 071002, China; National&Local Joint Engineering Research Center of Metrology Instrument and System, Hebei University, Baoding 071002, China; Hebei Key Laboratory of Energy Metering and Safety Testing Technology, Hebei University, Baoding 071002, China
| | - Wenqi Zhang
- School of Quality and Technical Supervision, Hebei University, Baoding 071002, China; National&Local Joint Engineering Research Center of Metrology Instrument and System, Hebei University, Baoding 071002, China; Hebei Key Laboratory of Energy Metering and Safety Testing Technology, Hebei University, Baoding 071002, China
| | - Lu Zhang
- School of Quality and Technical Supervision, Hebei University, Baoding 071002, China; National&Local Joint Engineering Research Center of Metrology Instrument and System, Hebei University, Baoding 071002, China; Hebei Key Laboratory of Energy Metering and Safety Testing Technology, Hebei University, Baoding 071002, China
| | - Mengyao Guo
- College of Traditional Chinese Medicine, Hebei University, Baoding 071002, China
| | - Chengwen Xiang
- College of Traditional Chinese Medicine, Hebei University, Baoding 071002, China
| | - Mengyu Ren
- School of Quality and Technical Supervision, Hebei University, Baoding 071002, China; National&Local Joint Engineering Research Center of Metrology Instrument and System, Hebei University, Baoding 071002, China; Hebei Key Laboratory of Energy Metering and Safety Testing Technology, Hebei University, Baoding 071002, China
| | - Yue Han
- School of Quality and Technical Supervision, Hebei University, Baoding 071002, China; National&Local Joint Engineering Research Center of Metrology Instrument and System, Hebei University, Baoding 071002, China; Hebei Key Laboratory of Energy Metering and Safety Testing Technology, Hebei University, Baoding 071002, China
| | - Junling Shi
- Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an 710072, China
| | - Hongliang Li
- College of Traditional Chinese Medicine, Hebei University, Baoding 071002, China.
| | - Xiaoguang Xu
- College of Traditional Chinese Medicine, Hebei University, Baoding 071002, China.
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Martínez-Rico O, Blanco L, Domínguez Á, González B. Accessible Eco-Friendly Method for Wastewater Removal of the Azo Dye Reactive Black 5 by Reusable Protonated Chitosan-Deep Eutectic Solvent Beads. Molecules 2024; 29:1610. [PMID: 38611889 PMCID: PMC11013712 DOI: 10.3390/molecules29071610] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2024] [Revised: 03/21/2024] [Accepted: 03/25/2024] [Indexed: 04/14/2024] Open
Abstract
A novel approach to enhance the utilization of low-cost and sustainable chitosan for wastewater remediation is presented in this investigation. The study centers around the modification of chitosan beads using a deep eutectic solvent composed of choline chloride and urea at a molar ratio of 1:2, followed by treatment with sulfuric acid using an impregnation accessible methodology. The effectiveness of the modified chitosan beads as an adsorbent was evaluated by studying the removal of the azo dye Reactive Black 5 (RB5) from aqueous solutions. Remarkably, the modified chitosan beads demonstrated a substantial increase in adsorption efficiency, achieving excellent removal of RB5 within the concentration range of 25-250 mg/L, ultimately leading to complete elimination. Several key parameters influencing the adsorption process were investigated, including initial RB5 concentration, adsorbent dosage, contact time, temperature, and pH. Quantitative analysis revealed that the pseudo-second-order kinetic model provided the best fit for the experimental data at lower dye concentrations, while the intraparticle diffusion model showed superior performance at higher RB5 concentration ranges (150-250 mg/L). The experimental data were successfully explained by the Langmuir isotherm model, and the maximum adsorption capacities were found to be 116.78 mg/g at 298 K and 379.90 mg/g at 318 K. Desorption studies demonstrated that approximately 41.7% of the dye could be successfully desorbed in a single cycle. Moreover, the regenerated adsorbent exhibited highly efficient RB5 removal (80.0-87.6%) for at least five consecutive uses. The outstanding adsorption properties of the modified chitosan beads can be attributed to the increased porosity, surface area, and swelling behavior resulting from the acidic treatment in combination with the DES modification. These findings establish the modified chitosan beads as a stable, versatile, and reusable eco-friendly adsorbent with high potential for industrial implementation.
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Affiliation(s)
| | | | | | - Begoña González
- Chemical Engineering Department, Universidade de Vigo, 36310 Vigo, Spain; (O.M.-R.); (L.B.); (Á.D.)
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Ruan M, Zhou H, Zhao L, Hu T, He L, Shan S. The ortho-substituent effect regulating the separation of photogenerated carriers to efficiently photodegrade tetracycline on the surface of FeCo-based MOFs. CHEMOSPHERE 2024; 352:141296. [PMID: 38296214 DOI: 10.1016/j.chemosphere.2024.141296] [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: 10/29/2023] [Revised: 12/25/2023] [Accepted: 01/23/2024] [Indexed: 02/13/2024]
Abstract
It is feasible to improve the photodegradation efficiency of organic pollutants by metal-organic frameworks (MOF)-based semiconductors via ligand engineering. In this work, three (Fe/Co)-XBDC-based MOFs were synthesized by introducing different ortho-functional groups X (X = -H, -NO2, -NH2) next to the carboxyl group of the organic ligand (i.e., terephthalic acid). The analysis focused on the influence mechanism of the adjacent functional group effect of the ligand on the physicochemical properties of the material and the actual photodegradation activity of TC. Multiple pieces of evidences suggested that the differences in electron-induced and photocharge-transfer mechanisms of the above ortho functional groups affect the crystal morphology and photocatalytic activity of FeCo-MOF during pyrolysis. Interestingly, (Fe/Co)-NH2BDC exhibited the highest photocatalytic activity under neutral conditions. The results of density functional theory show that the introduction of a strong donor-NH2 group can enhance light absorption and act as an "electron pump" to supply electrons to the iron center, accelerating the separation and efficient transport of photogenerated carriers on the ligand-metal bridge. In conclusion, this study is a proposal for a strategy of structural regulation for the enhancement of the catalytic activity of (Fe/Co)-MOFs in the photodegradation of TC.
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Affiliation(s)
- Ming Ruan
- Faculty of Chemical Engineering, Kunming University of Science and Technology, Kunming, China
| | - Huajing Zhou
- Faculty of Civil Engineering and Mechanics, Kunming University of Science and Technology, Kunming, China
| | - Lingxiang Zhao
- Faculty of Civil Engineering and Mechanics, Kunming University of Science and Technology, Kunming, China
| | - Tianding Hu
- Faculty of Chemical Engineering, Kunming University of Science and Technology, Kunming, China
| | - Liang He
- Faculty of Chemical Engineering, Kunming University of Science and Technology, Kunming, China.
| | - Shaoyun Shan
- Faculty of Chemical Engineering, Kunming University of Science and Technology, Kunming, China.
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6
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Wang M, Yan R, Shan M, Liu S, Tang H. Fabrication of crown ether-containing copolymer porous membrane and their enhanced adsorption performance for cationic dyes: Experimental and DFT investigations. CHEMOSPHERE 2024; 352:141363. [PMID: 38346508 DOI: 10.1016/j.chemosphere.2024.141363] [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: 11/08/2023] [Revised: 01/31/2024] [Accepted: 02/01/2024] [Indexed: 02/19/2024]
Abstract
Adsorptive separation membranes are widely utilized for the removal of toxic dyeing pollutants from dyeing wastewater. However, developing novel adsorption membranes with large adsorption capacities and enhanced adsorption performance for dyes in actual wastewater poses a significant challenge. This study focuses on the fabrication of crown ether-containing copolymer porous membrane (CRPM) and investigation of the adsorption performance of dyes from aqueous solutions. The morphology structure and pore size distribution revealed that the membrane was endowed with rich micropores and hierarchical porous structures. Three typical cationic dyes (MB, RhB, CV) and an anionic dye (MO) were selected to evaluate the adsorption behavior. The results of adsorption isotherms and kinetics demonstrated that the adsorption data could be well-fitted using the Freundlich and pseudo-first-order kinetic models, the thermodynamic parameters revealed that the adsorption process of dyes on CRPM is a spontaneous endothermic reaction. The membrane exhibited excellent adsorption performance for cationic dyes, with RhB displaying a higher maximum adsorption capacity than previously reported porous membranes. Notably, dynamic adsorption-desorption filtration demonstrated a rapid removal efficiency, with RhB, MB, and CV achieving removal rates of 99.09%, 98.63%, and 99.14% respectively, after five cycles. The filtration volume of the CRPM membrane was 2.4-fold greater than that of a traditional PVDF membrane when applied to actual dyeing wastewater. DFT theoretical calculations were employed to elucidate the adsorption mechanism. These calculations confirmed the significant roles of electrostatic interactions, H-bonds and π-π interactions in facilitating the high-efficiency adsorption of cationic dyes. These findings highlight the potential of the crown ether-containing copolymer as a promising material for adsorption separation membranes in the treatment of dyeing wastewater.
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Affiliation(s)
- Meng Wang
- School of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu, Anhui, 241000, China
| | - Rongkang Yan
- School of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu, Anhui, 241000, China
| | - Meng Shan
- School of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu, Anhui, 241000, China
| | - Shasha Liu
- School of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu, Anhui, 241000, China.
| | - Hai Tang
- School of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu, Anhui, 241000, China.
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7
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Yang H, He S, Feng Q, Liu Z, Xia S, Zhou Q, Wu Z, Zhang Y. Lotus (Nelumbo nucifera): a multidisciplinary review of its cultural, ecological, and nutraceutical significance. BIORESOUR BIOPROCESS 2024; 11:18. [PMID: 38647851 PMCID: PMC10991372 DOI: 10.1186/s40643-024-00734-y] [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: 12/12/2023] [Accepted: 01/16/2024] [Indexed: 04/25/2024] Open
Abstract
This comprehensive review systematically examines the multifarious aspects of Nelumbo nucifera, elucidating its ecological, nutritional, medicinal, and biomimetic significance. Renowned both culturally and scientifically, Nelumbo nucifera manifests remarkable adaptability, characterized by its extensive distribution across varied climatic regions, underpinned by its robust rhizome system and prolific reproductive strategies. Ecologically, this species plays a crucial role in aquatic ecosystems, primarily through biofiltration, thereby enhancing habitat biodiversity. The rhizomes and seeds of Nelumbo nucifera are nutritionally significant, being rich sources of dietary fiber, essential vitamins, and minerals, and have found extensive culinary applications. From a medicinal perspective, diverse constituents of Nelumbo nucifera exhibit therapeutic potential, including anti-inflammatory, antioxidant, and anti-cancer properties. Recent advancements in preservation technology and culinary innovation have further underscored its role in the food industry, highlighting its nutritional versatility. In biomimetics, the unique "lotus effect" is leveraged for the development of self-cleaning materials. Additionally, the transformation of Nelumbo nucifera into biochar is being explored for its potential in sustainable environmental practices. This review emphasizes the critical need for targeted conservation strategies to protect Nelumbo nucifera against the threats posed by climate change and habitat loss, advocating for its sustainable utilization as a species of significant value.
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Affiliation(s)
- Hang Yang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China
- School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan, 430070, China
| | - Simai He
- School of Environmental Science and Engineering, Jilin Normal University, Siping, 136000, China
| | - Qi Feng
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Zisen Liu
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China
| | - Shibin Xia
- School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan, 430070, China.
| | - Qiaohong Zhou
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China
| | - Zhenbin Wu
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China
| | - Yi Zhang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China.
- University of Chinese Academy of Sciences, Beijing, 100049, China.
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Liu Z, Zhang J, Mou R. Phosphogypsum-Modified Vinasse Shell Biochar as a Novel Low-Cost Material for High-Efficiency Fluoride Removal. Molecules 2023; 28:7617. [PMID: 38005339 PMCID: PMC10675684 DOI: 10.3390/molecules28227617] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 10/31/2023] [Accepted: 11/09/2023] [Indexed: 11/26/2023] Open
Abstract
In this study, vinasse shell biochar (VS) was easily modified with phosphogypsum to produce a low-cost and novel adsorbent (MVS) with excellent fluoride adsorption performance. The physicochemical features of the fabricated materials were studied in detail using SEM, EDS, BET, XRD, FTIR, and XPS techniques. The adsorption experiments demonstrated that the adsorption capacity of fluoride by MVS was greatly enhanced compared with VS, and the adsorption capacity increased with the pyrolysis temperature, dosage, and contact time. In comparison to chloride and nitrate ions, sulfate ions significantly affected adsorption capacity. The fluoride adsorption capacity increased first and then decreased with increasing pH in the range of 3-12. The fluoride adsorption could be perfectly fitted to the pseudo-second-order model. Adsorption isotherms matched Freundlich and Sips isotherm models well, giving 290.9 mg/g as the maximum adsorption capacity. Additionally, a thermodynamic analysis was indicative of spontaneous and endothermic processes. Based on characterization and experiment results, the plausible mechanism of fluoride adsorption onto MVS was proposed, mainly including electrostatic interactions, ion exchange, precipitation, and hydrogen bonds. This study showed that MVS could be used for the highly efficient removal of fluoride and was compatible with practical applications.
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Affiliation(s)
- Zheng Liu
- School of Environmental Science and Engineering, Xiamen University of Technology, Xiamen 361024, China
- Fujian Engineering and Research Center of Rural Sewage Treatment and Water Safety, Xiamen 361024, China
- Key Laboratory of Environmental Biotechnology (XMUT), Fujian Province University, Xiamen 361024, China
| | - Jingmei Zhang
- School of Environmental Science and Engineering, Xiamen University of Technology, Xiamen 361024, China
- Fujian Engineering and Research Center of Rural Sewage Treatment and Water Safety, Xiamen 361024, China
- Key Laboratory of Environmental Biotechnology (XMUT), Fujian Province University, Xiamen 361024, China
| | - Rongmei Mou
- School of Environmental Science and Engineering, Xiamen University of Technology, Xiamen 361024, China
- Fujian Engineering and Research Center of Rural Sewage Treatment and Water Safety, Xiamen 361024, China
- Key Laboratory of Environmental Biotechnology (XMUT), Fujian Province University, Xiamen 361024, China
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Shen Z, Sun Y, Yang Y, Zheng X, Shang J, Liu Y, Guo R, Chen J, Liao Q. Influence by varying organic matter content and forms in suspended particulate matter: impacts on the adsorption of tetracycline and norfloxacin. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:112409-112421. [PMID: 37831246 DOI: 10.1007/s11356-023-30064-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Accepted: 09/20/2023] [Indexed: 10/14/2023]
Abstract
Antibiotics are commonly detected in natural waters. The organic matter (OM) in suspended particulate matter (SPM) has a critical impact on the adsorption of antibiotics in water. We investigated the contribution of OM content and form to the adsorption of tetracycline (TC) and norfloxacin (NOR) in the SPM of Taihu Lake. To change the content and form of OM in SPM, the samples were subjected to pyrolysis at 505 ˚C and oxidization with H2O2, respectively. Combustion almost completely removed OM, while oxidation removed most of the OM and transformed the remaining OM. Regardless of whether the OM changed or not, the adsorption of NOR and TC by SPM was more in line with the pseudo-second-order kinetic model instead of pseudo-first-order. The fitting of the intraparticle diffusion model showed that the removal of OM had a certain degree of change in the adsorption process. The isothermal adsorption of TC in all samples was more in line with the Temkin model. The isothermal adsorption of NOR in the oxidized sample conformed to the Temkin model, while it conformed to the Langmuir model in the original sample and the sample removed OM via combustion. The adsorption capacity of SPM with almost complete removal of OM significantly decreased, while conversely, the adsorption capacity of SPM after oxidation increased. This indicates that both the content and form of OM affect the adsorption of antibiotics by SPM, and the form of OM has a greater impact. The contribution of OM to NOR adsorption was greater than that of TC. In conclusion, the results verify the importance of OM in adsorbing antibiotics onto SPM, which may provide basic data for antibiotic migration in surface water.
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Affiliation(s)
- Zihao Shen
- Department of Environmental Science, China Pharmaceutical University, Nanjing, 211198, China
| | - Yali Sun
- Department of Environmental Science, China Pharmaceutical University, Nanjing, 211198, China
| | - Ye Yang
- Department of Environmental Science, China Pharmaceutical University, Nanjing, 211198, China
| | - Xiaolan Zheng
- Department of Environmental Science, China Pharmaceutical University, Nanjing, 211198, China
| | - Jingge Shang
- Department of Environmental Science, China Pharmaceutical University, Nanjing, 211198, China
| | - Yanhua Liu
- Department of Environmental Science, China Pharmaceutical University, Nanjing, 211198, China
| | - Ruixin Guo
- Department of Environmental Science, China Pharmaceutical University, Nanjing, 211198, China
| | - Jianqiu Chen
- Department of Environmental Science, China Pharmaceutical University, Nanjing, 211198, China
| | - Qianjiahua Liao
- Department of Environmental Science, China Pharmaceutical University, Nanjing, 211198, China.
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10
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Wang C, Feng X, Shang S, Liu H, Song Z, Zhang H. Lignin/sodium alginate hydrogel for efficient removal of methylene blue. Int J Biol Macromol 2023; 237:124200. [PMID: 36972829 DOI: 10.1016/j.ijbiomac.2023.124200] [Citation(s) in RCA: 18] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Revised: 03/12/2023] [Accepted: 03/23/2023] [Indexed: 03/29/2023]
Abstract
In this work, a class of bio-based hydrogels (LN-NH-SA hydrogel) were prepared from aminated lignin and sodium alginate. The physical and chemical properties of the LN-NH-SA hydrogel were fully characterized using field emission scanning electron microscopy, thermogravimetric analysis, fourier transform infrared spectroscopy, N2 adsorption-desorption isotherms, and other techniques. LN-NH-SA hydrogels were tested for the adsorption of dyes (methyl orange and methylene blue). The LN-NH-SA@3 hydrogel showed better adsorption efficiency for MB with a maximum adsorption capacity of 388.81 mg·g-1, a bio-based adsorbent with a high adsorption capacity. The adsorption process followed the pseudo-second-order model and fitted to the Freundlich isotherm equation. More importantly, LN-NH-SA@3 hydrogel maintained 87.64 % adsorption efficiency after 5 cycles. Overall, the proposed hydrogel with environmentally friendly and low cost is promising for the absorption of dye contamination.
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Affiliation(s)
- Chao Wang
- Institute of Chemical Industry of Forest Products, CAF, China; National Engineering Lab. for Biomass Chemical Utilization, China; Key Lab. of Chemical Engineering of Forest Products, National Forestry and Grassland Administration, China; Key Lab. of Biomass Energy and Material, Jiangsu Province, China; Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing 210042, China
| | - Xuezhen Feng
- Institute of Chemical Industry of Forest Products, CAF, China; National Engineering Lab. for Biomass Chemical Utilization, China; Key Lab. of Chemical Engineering of Forest Products, National Forestry and Grassland Administration, China; Key Lab. of Biomass Energy and Material, Jiangsu Province, China; Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing 210042, China
| | - Shibin Shang
- Institute of Chemical Industry of Forest Products, CAF, China; National Engineering Lab. for Biomass Chemical Utilization, China; Key Lab. of Chemical Engineering of Forest Products, National Forestry and Grassland Administration, China; Key Lab. of Biomass Energy and Material, Jiangsu Province, China; Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing 210042, China
| | - He Liu
- Institute of Chemical Industry of Forest Products, CAF, China; National Engineering Lab. for Biomass Chemical Utilization, China; Key Lab. of Chemical Engineering of Forest Products, National Forestry and Grassland Administration, China; Key Lab. of Biomass Energy and Material, Jiangsu Province, China; Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing 210042, China
| | - Zhanqian Song
- Institute of Chemical Industry of Forest Products, CAF, China; National Engineering Lab. for Biomass Chemical Utilization, China; Key Lab. of Chemical Engineering of Forest Products, National Forestry and Grassland Administration, China; Key Lab. of Biomass Energy and Material, Jiangsu Province, China; Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing 210042, China
| | - Haibo Zhang
- Institute of Chemical Industry of Forest Products, CAF, China; National Engineering Lab. for Biomass Chemical Utilization, China; Key Lab. of Chemical Engineering of Forest Products, National Forestry and Grassland Administration, China; Key Lab. of Biomass Energy and Material, Jiangsu Province, China; Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing 210042, China.
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11
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Yu X, Mu N, Liu X, Shang Y, Wang D, Li F. A green method for decolorization of polysaccharides from alfalfa by S-8 macroporous resin and their characterization and antioxidant activity. RSC Adv 2023; 13:9642-9653. [PMID: 36968038 PMCID: PMC10037299 DOI: 10.1039/d3ra00756a] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2023] [Accepted: 03/16/2023] [Indexed: 03/26/2023] Open
Abstract
In this study, the decolorization conditions of polysaccharides extracted from alfalfa by S-8 macroporous adsorption resin were optimized through the response surface method, and the physicochemical properties and antioxidant activity of decolorized polysaccharides were investigated. The optimal decolorization conditions were determined to be as follows: the amount of S-8 macroporous adsorption resin was 1.4 g, the adsorption time was 2 h, and the adsorption temperature was 58 °C. Under these optimal conditions, a decolorization ratio of 71.43 ± 0.23% was achieved, which was consistent with the model hypothesis. The adsorption curve showed that S-8 macroporous adsorption resin adsorption of pigment molecules in alfalfa polysaccharides (APS) agreed with the Freundlich and pseudo-second-order equations, and the adsorption was a spontaneous endothermic process. High-performance liquid chromatography (HPLC) analysis of monosaccharide composition showed that APS was composed of mannose, glucose, galactose, arabinose and glucuronic acid in a molar ratio of 1.18 : 8.04 : 1.22 : 0.92 : 1. The results of antioxidant activity studies showed that APS had strong scavenging activity against ABTS, DPPH and hydroxyl radicals. This study will help to further understand the adsorption mechanism of macroporous resin on polysaccharide pigment molecules and lay a basis for evaluating their physiological activity.
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Affiliation(s)
- Xiaohong Yu
- School of Marine and Bioengineering, Yancheng Institute of Technology Yancheng 224051 China
| | - Na Mu
- School of Marine and Bioengineering, Yancheng Institute of Technology Yancheng 224051 China
| | - Xiaochen Liu
- School of Marine and Bioengineering, Yancheng Institute of Technology Yancheng 224051 China
| | - Yueling Shang
- School of Marine and Bioengineering, Yancheng Institute of Technology Yancheng 224051 China
| | - Dujun Wang
- School of Marine and Bioengineering, Yancheng Institute of Technology Yancheng 224051 China
| | - Fengwei Li
- School of Marine and Bioengineering, Yancheng Institute of Technology Yancheng 224051 China
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12
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Wei Q, Wu L, Zhu M, Wang Z, Huang ZH, Wang MX. Porous nitrogen-doped reduced graphene oxide-supported CuO@Cu 2O hybrid electrodes for highly sensitive enzyme-free glucose biosensor. iScience 2023; 26:106155. [PMID: 36879815 PMCID: PMC9984959 DOI: 10.1016/j.isci.2023.106155] [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: 01/17/2023] [Revised: 01/30/2023] [Accepted: 02/03/2023] [Indexed: 02/11/2023] Open
Abstract
Constructing high-performance enzyme-free biosensors for detecting glucose is essential to preliminary diabetes diagnosis. Here, copper oxide nanoparticles (CuO@Cu2O NPs) were anchored in porous nitrogen-doped reduced graphene oxide (PNrGO) to construct CuO@Cu2O/PNrGO/GCE hybrid electrode for sensitive detection of glucose. Benefiting from the remarkable synergistic effects between the multiple high activation sites of CuO@Cu2O NPs and the dramatic properties of PNrGO with excellent conductivity and large surface area with many accessible pores, the hybrid electrode possesses outstanding glucose sensing performance that is far superior to those of pristine CuO@Cu2O electrode. The as-fabricated enzyme-free glucose biosensor displays prominent glucose sensitivity of 2,906.07 μA mM-1 cm-2, extremely low limit of detection of 0.13 μM, and wide linear detection of 3 μM-6.772 mM. In addition, excellent reproducibility, favorable long-term stability, and distinguished selectivity are obtained in the glucose detection. Importantly, this study provides promising results for continuous improvement of non-enzyme sensing applications.
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Affiliation(s)
- Qing Wei
- Key Laboratory of Biomass-based Materials for Environment and Energy in Petroleum & Chemical Industries, School of Chemical and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430205, China
| | - Ling Wu
- Hubei Province Key Laboratory of Coal Conversion and New Carbon Materials, School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan 430081, China
| | - Meiwen Zhu
- Chongqing Academy of Metrology and Quality Inspection, Chongqing 401123, People's Republic of China
| | - Zhipeng Wang
- Institute of Advanced Materials, Jiangxi Normal University, 99 Ziyang Avenue, Nanchang 330022, China
| | - Zheng-Hong Huang
- Lab of Advanced Materials, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
| | - Ming-Xi Wang
- Key Laboratory of Biomass-based Materials for Environment and Energy in Petroleum & Chemical Industries, School of Chemical and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430205, China
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13
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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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14
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Gao F, Zhang L, Yang L, Zhou X, Zhang Y. Structural Properties of Graphene Oxide Prepared from Graphite by Three Different Methods and the Effect on Removal of Cr(VI) from Aqueous Solution. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:279. [PMID: 36678032 PMCID: PMC9867312 DOI: 10.3390/nano13020279] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Revised: 12/25/2022] [Accepted: 01/04/2023] [Indexed: 05/27/2023]
Abstract
Herein, three types of graphene oxides (GOs, GO-M1, GO-M2 and GO-M3) have been successfully prepared from graphite by three different methods and utilized for the removal of Cr(VI) from aqueous solutions. Further, the effects of initial concentration and pH, adsorbent dosage, contact time and temperature on the adsorption performance of GOs were investigated by batch adsorption experiments. Furthermore, the adsorption mechanisms for Cr(VI) adsorption by GOs are mainly the redox reaction and electrostatic attraction, while there are also pore filling, ion exchange and complexation involved in these adsorption processes. The adsorption kinetic and isotherm data indicate that these adsorption processes of GOs on Cr(VI) are dominantly monolayer chemisorption and equilibrium can be reached in 30 min. The saturation adsorption capacities (Qm, 298.15 K) of GO-M1, GO-M2 and GO-M3 for Cr(VI) are estimated to be 3.5412 mg⋅g-1, 2.3631 mg⋅g-1 and 7.0358 mg⋅g-1, respectively. Moreover, the adsorption thermodynamic study showed that these adsorption processes of Cr(VI) by the three types of GOs at 298.15 K to 323.15 K are endothermic, entropy-driven and thermodynamically spontaneous and feasible. Overall, these findings provided vital insights into the mechanism and application of Cr(VI) removal by GOs.
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Affiliation(s)
- Feng Gao
- State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
- Key Laboratory of Yangtze Water Environment for Ministry of Education, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
- Shanghai Institute of Pollution Control and Ecological Security, Tongji University, Shanghai 200092, China
| | - Lei Zhang
- State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
- Key Laboratory of Yangtze Water Environment for Ministry of Education, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
| | - Libin Yang
- State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
- Key Laboratory of Yangtze Water Environment for Ministry of Education, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
- Shanghai Institute of Pollution Control and Ecological Security, Tongji University, Shanghai 200092, China
| | - Xuefei Zhou
- State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
- Key Laboratory of Yangtze Water Environment for Ministry of Education, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
- Shanghai Institute of Pollution Control and Ecological Security, Tongji University, Shanghai 200092, China
| | - Yalei Zhang
- State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
- Key Laboratory of Yangtze Water Environment for Ministry of Education, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
- Shanghai Institute of Pollution Control and Ecological Security, Tongji University, Shanghai 200092, China
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15
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Grigoraș CG, Simion AI, Favier L, Drob C, Gavrilă L. Performance of Dye Removal from Single and Binary Component Systems by Adsorption on Composite Hydrogel Beads Derived from Fruits Wastes Entrapped in Natural Polymeric Matrix. Gels 2022; 8:795. [PMID: 36547319 PMCID: PMC9777880 DOI: 10.3390/gels8120795] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Revised: 11/28/2022] [Accepted: 12/01/2022] [Indexed: 12/12/2022] Open
Abstract
The treatment of contaminated water is currently a major concern worldwide. This work was directed towards the preparation of a composite hydrogel by entrapping cherry stones powder on chitosan, which is known as one of the most abundant natural polymers. The synthesized material was characterized by scanning electron microscopy, by Fourier transform infrared spectroscopy, and by the point of zero charge determination. Its ability to remove two azo dyes models (Acid Red 66 and Reactive Black 5) existing in single form and in binary mixture was evaluated. Response Surface Methodology-Central Composite Design was used to optimize three parameters affecting the process while targeting the lowest final contaminant concentrations. The best results were obtained at pH 2, an adsorbent dose of 100 g/L, and a temperature of 30 °C, when more than 90% of the pollutants from the single component systems and more than 70% of those of the binary mixtures were removed from their aqueous solutions. The adsorption process was in accordance with Elovich and pseudo-second-order kinetic models, and closely followed the Freundlich and Temkin equilibrium isotherms. The obtained results led to the conclusion that the prepared hydrogel composite possesses the ability to successfully retain the target molecules and that it can be considered as a viable adsorbent material.
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Affiliation(s)
- Cristina-Gabriela Grigoraș
- Department of Chemical and Food Engineering, Faculty of Engineering, "Vasile Alecsandri" University of Bacău, Calea Mărășești 157, 600115 Bacău, Romania
| | - Andrei-Ionuț Simion
- Department of Chemical and Food Engineering, Faculty of Engineering, "Vasile Alecsandri" University of Bacău, Calea Mărășești 157, 600115 Bacău, Romania
| | - Lidia Favier
- Ecole Nationale Supérieure de Chimie de Rennes, University of Rennes, CNRS, UMR 6226, CEDEX 7, 35708 Rennes, France
| | - Cătălin Drob
- Department of Engineering and Management, Mechatronics, Faculty of Engineering, "Vasile Alecsandri" University of Bacău, Calea Mărășești 157, 600115 Bacău, Romania
| | - Lucian Gavrilă
- Department of Chemical and Food Engineering, Faculty of Engineering, "Vasile Alecsandri" University of Bacău, Calea Mărășești 157, 600115 Bacău, Romania
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Effective melanoidin adsorption of polyethyleneimine- functionalised molasses-based porous carbon: Adsorption behaviours and microscopic mechanisms. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.123016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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17
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Su Y, Xie K, Xiao J, Chen S. Influence of Microbial Treatment on the Preparation of Porous Biochar with Stepped-Up Performance and Its Application in Organic Pollutants Control. Int J Mol Sci 2022; 23:ijms232214082. [PMID: 36430558 PMCID: PMC9695483 DOI: 10.3390/ijms232214082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Revised: 11/07/2022] [Accepted: 11/08/2022] [Indexed: 11/18/2022] Open
Abstract
In this study, Irisensata Thunb grass (ITG) was used as a biomass carbon resource to prepare biochars for the first time. After microbial treatment, the obtained microbial-treated ITG (MITG) was activated by using a mixed base as an activator for preparation of biochar (MITGB). The specific surface area and total pore volume of MITGB were 3036.4 m2/g and 1.5252 cm3/g, which were higher than those of biochar prepared without microbial treatment (ITGB, 2930.0 m2/g and 1.5062 cm3/g). Besides, the physicochemical properties of MITGB and ITGB were also quite different including micro morphology, surface chemistry, functional groups, etc. In the experiment of removing organic pollutants with synthetic dye RhB and antibiotic TH as the models, MITGB showed excellent treatment ability. The maximum adsorption capacities of MITGB for RhB and TH were 1354.2 and 1462.6 mg/g, which were higher than most of the biochars. In addition, after five cycles of recycling, the adsorption capacities of the organic pollutant models can still be maintained at more than 80%, which showed high stability. This work verified the feasibility of microbial treatment to further improve the performance of biochar and provided a new idea and direction for exploring other biochars.
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Affiliation(s)
- Yingjie Su
- College of Life Sciences, Jilin Agricultural University, Changchun 130118, China
- Key Laboratory of Straw Comprehensive Utilization and Black Soil Conservation, Ministry of Education, Jilin Agricultural University, Changchun 130118, China
| | - Keyu Xie
- College of Life Sciences, Jilin Agricultural University, Changchun 130118, China
- Key Laboratory of Straw Comprehensive Utilization and Black Soil Conservation, Ministry of Education, Jilin Agricultural University, Changchun 130118, China
| | - Jiaohui Xiao
- College of Life Sciences, Jilin Agricultural University, Changchun 130118, China
- Key Laboratory of Straw Comprehensive Utilization and Black Soil Conservation, Ministry of Education, Jilin Agricultural University, Changchun 130118, China
| | - Siji Chen
- College of Life Sciences, Jilin Agricultural University, Changchun 130118, China
- Key Laboratory of Straw Comprehensive Utilization and Black Soil Conservation, Ministry of Education, Jilin Agricultural University, Changchun 130118, China
- Correspondence:
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18
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Chen X, Yu G, Chen Y, Tang S, Su Y. Cow Dung-Based Biochar Materials Prepared via Mixed Base and Its Application in the Removal of Organic Pollutants. Int J Mol Sci 2022; 23:ijms231710094. [PMID: 36077497 PMCID: PMC9456264 DOI: 10.3390/ijms231710094] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Revised: 08/31/2022] [Accepted: 09/01/2022] [Indexed: 12/24/2022] Open
Abstract
Cow dung (CD) is a waste product of livestock production. Improper disposal of a large amount of CD will cause environmental pollution. In this work, three biochar materials based on CD (BMCD) were prepared by using three types of base, including KOH, NaOH, and mixed base (MB, a mixture of equal mass NaOH and KOH) as activators to investigate the different physicochemical properties of BMCDs (BMCD-K, BMCD-Na, and BMCD-MB). The objective was to verify the effectiveness of MB activation in the preparation of biochar materials. The results show that MB has an effect on the structural characteristics of BMCDs. In particular, the surface area and total pore volume, the specific surface area, and the total pore volume of BMCD-MB (4081.1 m2 g−1 and 3.0118 cm3 g−1) are significantly larger than those of BMCD-K (1784.6 m2 g−1 and 1.1142 cm3 g−1) and BMCD-Na (1446.1 m2 g−1 and 1.0788 cm3 g−1). While synthetic dye rhodamine B (RhB) and antibiotic tetracycline hydrochloride (TH) were selected as organic pollutant models to explore the adsorption performances, the maximum adsorption capacities of BMCD-K, BMCD-NA and BMCD-MB were 951, 770, and 1241 mg g−1 for RhB, 975, 1051, and 1105 mg g−1 for TH, respectively, which were higher than those of most adsorbents. This study demonstrated that MB can be used as an effective activator for the preparation of biochar materials with enhanced performance.
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Affiliation(s)
- Xiaoxin Chen
- College of Life Sciences, Jilin Agricultural University, Changchun 130118, China
- Key Laboratory of Straw Comprehensive Utilization and Black Soil Conservation, Ministry of Education, Jilin Agricultural University, Changchun 130118, China
| | - Gengxin Yu
- College of Life Sciences, Jilin Agricultural University, Changchun 130118, China
- Key Laboratory of Straw Comprehensive Utilization and Black Soil Conservation, Ministry of Education, Jilin Agricultural University, Changchun 130118, China
| | - Yuanhui Chen
- Key Laboratory of Straw Comprehensive Utilization and Black Soil Conservation, Ministry of Education, Jilin Agricultural University, Changchun 130118, China
| | - Shanshan Tang
- College of Life Sciences, Jilin Agricultural University, Changchun 130118, China
- Key Laboratory of Straw Comprehensive Utilization and Black Soil Conservation, Ministry of Education, Jilin Agricultural University, Changchun 130118, China
| | - Yingjie Su
- College of Life Sciences, Jilin Agricultural University, Changchun 130118, China
- Key Laboratory of Straw Comprehensive Utilization and Black Soil Conservation, Ministry of Education, Jilin Agricultural University, Changchun 130118, China
- Correspondence:
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