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Wang W, Wan H, Wang Z, Shao L, Liu N, Zhan P, Zhang L, Sun K, Wu Z. Lignin-based porous carbon/palygorskite composites doped with different metals for efficient iodine capture: Structure, performance, and mechanism. Int J Biol Macromol 2025; 308:142549. [PMID: 40154718 DOI: 10.1016/j.ijbiomac.2025.142549] [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: 11/12/2024] [Revised: 03/17/2025] [Accepted: 03/24/2025] [Indexed: 04/01/2025]
Abstract
Radioactive iodine waste from the nuclear power industry will cause air and water pollution. Here, a series of metal (Bi, Zn and Fe)-doped lignin-based porous carbon/palygorskite composites (ELC-P-X) were prepared by wet impregnation and carbonization method for enhancing the iodine capture. Their morphology, porosity, and surface functional groups of ELC-P-X were characterized in detail, these metal species showed different sizes of nanoparticles with the oxide form. Zn, Fe doping enhanced its porosity of ELC-P (247.5 m2/g), and up to 359.5 m2/g, while Bi doping had slight negative influence on the porosity. Adsorption experiments showed that the iodine vapor adsorption capacity of ELC-P-X followed an order of ELC-P-Zn > ELC-P-Fe > ELC-P-Bi> ELC-P, the highest adsorption capacity can reach 650.0 mg/g. The results suggested that above metal doping can promote iodine vapor adsorption. Meanwhile, the adsorption capacity of ELC-P-X for iodine in n-hexane solution only showed an increase on ELC-P-Fe (362.2 mg/g), compared to ELC-P (332.0 mg/g). ELC-P-Fe still had good adsorption stability, acid and alkali resistance and cycling performance. We found that the adsorption of iodine vapor could mainly depend on the porosity of ELC-P-X materials, while the surface functional groups, iodine-affinity metal species, and micro-nano structure made a major contribution synergistically to the enhanced adsorption for the iodine solution. The adsorption mechanism study revealed that the Lewis acid-base interaction, electrostatic interactions, and charge transfer action accompanied by weak chemisorption were the main driving force for the iodine molecule adsorption on ELC-P-Fe. This work provided an important reference for the rational preparation of lignin based iodine adsorbents and proposed a kind of universal strategy for enhancing iodine adsorption.
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Affiliation(s)
- Wanying Wang
- School of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China
| | - Huan'ai Wan
- School of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China
| | - Zhoujian Wang
- School of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China
| | - Lishu Shao
- Ministry of Forestry Bioethanol Research Center, College of Chemistry and Chemical Engineering, Central South University of Forestry and Technology, Changsha 410004, China.
| | - Na Liu
- Ministry of Forestry Bioethanol Research Center, College of Chemistry and Chemical Engineering, Central South University of Forestry and Technology, Changsha 410004, China
| | - Peng Zhan
- Ministry of Forestry Bioethanol Research Center, College of Chemistry and Chemical Engineering, Central South University of Forestry and Technology, Changsha 410004, China
| | - Lin Zhang
- Ministry of Forestry Bioethanol Research Center, College of Chemistry and Chemical Engineering, Central South University of Forestry and Technology, Changsha 410004, China
| | - Kai Sun
- College of Chemical Engineering and Technology, Taiyuan University of Science and Technology, Taiyuan 030024, China; National Key Laboratory of High Efficiency and Low Carbon Utilization of Coal, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China.
| | - Zhiping Wu
- Ministry of Forestry Bioethanol Research Center, College of Chemistry and Chemical Engineering, Central South University of Forestry and Technology, Changsha 410004, China
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Lee JI, Choi D, Kim S, Park SJ, Kwon EE. Fabrication of Fe-doped biochar for Pb adsorption through pyrolysis of agricultural waste with red mud. CHEMOSPHERE 2025; 370:143930. [PMID: 39667532 DOI: 10.1016/j.chemosphere.2024.143930] [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: 10/02/2024] [Revised: 11/26/2024] [Accepted: 12/08/2024] [Indexed: 12/14/2024]
Abstract
Synthesis of metal-doped biochar have gained prominence due to their adsorption capability for heavy metal(loid)s. In this study, iron-doped biochar (Fe-BC) was fabricated through pyrolysis of waste mushroom substrate (WMS) with red mud (RM). The synthesised Fe-BC was employed as an adsorbent for Pb removal. During pyrolysis of WMS, introducing RM contributed to the enhanced syngas formation, this observation was attributed to the catalytic function of Fe species in RM. The Fe-BCs were made at three different temperatures (500, 600, and 700 °C), and their adsorption capabilities for Pb were evaluated. Among the prepared Fe-BCs, Fe-BC fabricated at 700 °C (Fe-BC-700) demonstrated the highest Pb adsorption performance (243.07 mg g-1). This performance primarily stemmed from the presence of zero-valent Fe and surface functional groups (-OH) in Fe-BC-700. Pb removal by Fe-BC-700 was dominated by surface precipitation and complexation mechanisms. Therefore, this study highlights a promising approach for producing an effective adsorbent for Pb removal from industrial wastewater by utilizing wastes such as RM and WMS.
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Affiliation(s)
- Jae-In Lee
- Institute of Agricultural Environmental Science, Hankyong National University, Anseong, 17579, Republic of Korea
| | - Dongho Choi
- Department of Earth Resources and Environmental Engineering, Hanyang University, Seoul, 04763, Republic of Korea
| | - Seungwon Kim
- Department of Earth Resources and Environmental Engineering, Hanyang University, Seoul, 04763, Republic of Korea
| | - Seong-Jik Park
- Institute of Agricultural Environmental Science, Hankyong National University, Anseong, 17579, Republic of Korea; Department of Bioresources and Rural System Engineering, Hankyong National University, Anseong, 17579, Republic of Korea.
| | - Eilhann E Kwon
- Department of Earth Resources and Environmental Engineering, Hanyang University, Seoul, 04763, Republic of Korea.
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Wei Y, Yu J, Haider FU, Zhang Q, Chu R, Liqun C. Integrated removal of chromium, lead, and cadmium using nano-zero-valent iron-supported biochar: Mechanistic insights and eco-toxicity assessment. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2025; 289:117532. [PMID: 39765113 DOI: 10.1016/j.ecoenv.2024.117532] [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: 07/14/2024] [Revised: 12/09/2024] [Accepted: 12/09/2024] [Indexed: 01/26/2025]
Abstract
The contamination of water and soil by heavy metals (HMs) is a global issue that should be given much more concern. Modified nano-zero-valent iron (nZVI) composites offer an effective strategy for HMs remediation, but few studies have focused on removing coexisting HMs and the eco-toxicity of the composite. In this study, corn straw biochar-supported nZVI composites (nZVI-BC) were synthesized, characterized and used for the removal of Cr6 +, Pb2+, and Cd2+ in single and multi-system at different composites dosages, metal concentrations, and solution pH. This study indicated that the composites exhibited enhanced removal capacities for Cr6+, Pb2+, and Cd2+ (respectively 82.24, 737.2, and 545.28 mg g-1), which were considerably superior to those observed with the sole application of biochar (0.05, 89.88, and 108.49 mg g-1) and nZVI (39.8, 297.35, and 191.02 mg g-1). Results of the remediation application of the composites to multi-metal systems revealed that intricate interplay existed between coexisting HMs, which hindered the simultaneous removal effect. The coexistence of Cr6+ and Cd2+ decreased both removal efficiencies by 58.16 % and 14.06 % at high Cr6+ levels, respectively, while the coexistence of Cd2+ and Pb2+ resulted in a decrease in Cd2+ removal efficiency by 14.3 %. An in-depth characterization of the underlying adsorption mechanism was performed by using kinetic and isotherms models such as Pseudo-first-order, Pseudo-second-order, Langmuir and Freundlich, X-ray photoelectron spectroscopy (XPS) and transmission electron microscopy (TEM) analysis. Each HM exhibited a distinct adsorption mechanism. The primary removal processes for Cr6+ and Pb2+ involved adsorption, reduction, and precipitation, whereas Cd2+ was mainly removed by adsorption and precipitation. Eco-toxicity experiments revealed that nZVI-BC enhanced pak choi (Brassica rapa L.) seeds germination (13.32, 17.22, and 23.33 %) and vigor indexes (1.22, 1.44, and 1.15) under Cr6+, Pb2+, and Cd2+ contamination, respectively. Nevertheless, an observed shift in toxicity occurred when the composites dosage for Cr6+, Pb2+, and Cd2+ exceeded 2, 4, and 4 g L-1, respectively, thereby instigating adverse effects on the early stages of plant growth. This work elucidates the removal mechanism and intricate reactions between co-existing HMs, highlighting the potential of nZVI-BC as a remediation strategy for HMs contamination.
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Affiliation(s)
- Yuzhen Wei
- College of Resources and Environmental Sciences, Gansu Agricultural University, Lanzhou 730070, PR China; Gansu Provincial Key Laboratory of Arid land Crop Science, Gansu Agricultural University, Lanzhou 730070, PR China
| | - Jialu Yu
- College of Resources and Environmental Sciences, Gansu Agricultural University, Lanzhou 730070, PR China; Gansu Provincial Key Laboratory of Arid land Crop Science, Gansu Agricultural University, Lanzhou 730070, PR China
| | - Fasih Ullah Haider
- College of Resources and Environmental Sciences, Gansu Agricultural University, Lanzhou 730070, PR China; Gansu Provincial Key Laboratory of Arid land Crop Science, Gansu Agricultural University, Lanzhou 730070, PR China
| | - Qinhu Zhang
- College of Resources and Environmental Sciences, Gansu Agricultural University, Lanzhou 730070, PR China
| | - Run Chu
- College of Resources and Environmental Sciences, Gansu Agricultural University, Lanzhou 730070, PR China
| | - Cai Liqun
- College of Resources and Environmental Sciences, Gansu Agricultural University, Lanzhou 730070, PR China; Gansu Provincial Key Laboratory of Arid land Crop Science, Gansu Agricultural University, Lanzhou 730070, PR China.
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Wang Z, Huang M, Zhang Y, Zhou F, Yu J, Chi R, Xiao C. Enhanced Pb immobilization by CaO/MgO-modified soybean residue (okara) in phosphate mining wasteland soil: Mechanism and microbial community structure. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2025; 373:123779. [PMID: 39700920 DOI: 10.1016/j.jenvman.2024.123779] [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: 09/12/2024] [Revised: 11/29/2024] [Accepted: 12/14/2024] [Indexed: 12/21/2024]
Abstract
Lead (Pb) contamination is an inevitable consequence of phosphate mining, necessitating the development of effective remediation strategies. This study investigated the use of CaO/MgO-modified okara (CMS) as an eco-friendly approach to remediate Pb-contaminated soils from phosphate mining wastelands. In the present study, following 30 d of CMS application, the exchangeable Pb content was significantly decreased to 10.46%, with the majority of Pb transforming into more stable forms: carbonate-bound Pb (56.44%), Fe/Mn oxide-bound Pb (11.03%), and organic-bound Pb (19.58%). Additionally, the treatment led to a substantial enhancement in total phosphorus, available phosphorus, ammonium, and soil organic matter, thereby improving soil fertility. The microbial community structure was also significantly influenced by CMS, with a notable increase in Firmicutes to 45%. Key genera within the microbial community included Azospirillum, Pseudoxanthomonas, Sphingomonas, and Microvirga, with Pseudoxanthomonas and Massilia being the main differential species. These genera were significantly positively correlated, contributing to the maintenance of microbial community homeostasis and promoting the production of CO32- and PO43-, which further accelerated Pb immobilization. The results indicate that CMS is an effective amendment for Pb immobilization in contaminated soils, enhancing soil fertility and modulating the microbial community to promote Pb stabilization. This provides valuable insights into the ecological remediation of Pb-contaminated soils and water bodies, highlighting the potential of waste reuse in environmental management.
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Affiliation(s)
- Ziwei Wang
- Key Laboratory of Novel Biomass-Based Environmental and Energy Materials in Petroleum and Chemical Industry, Engineering Research Center of Phosphorus Resources Development and Utilization of Ministry of Education, School of Environmental Ecology and Biological Engineering, Wuhan Institute of Technology, Wuhan 430205, China
| | - Mengting Huang
- Key Laboratory of Novel Biomass-Based Environmental and Energy Materials in Petroleum and Chemical Industry, Engineering Research Center of Phosphorus Resources Development and Utilization of Ministry of Education, School of Environmental Ecology and Biological Engineering, Wuhan Institute of Technology, Wuhan 430205, China
| | - Yuxin Zhang
- Key Laboratory of Novel Biomass-Based Environmental and Energy Materials in Petroleum and Chemical Industry, Engineering Research Center of Phosphorus Resources Development and Utilization of Ministry of Education, School of Environmental Ecology and Biological Engineering, Wuhan Institute of Technology, Wuhan 430205, China
| | - Fang Zhou
- Key Laboratory of Novel Biomass-Based Environmental and Energy Materials in Petroleum and Chemical Industry, Engineering Research Center of Phosphorus Resources Development and Utilization of Ministry of Education, School of Environmental Ecology and Biological Engineering, Wuhan Institute of Technology, Wuhan 430205, China
| | - Junxia Yu
- Key Laboratory of Novel Biomass-Based Environmental and Energy Materials in Petroleum and Chemical Industry, Engineering Research Center of Phosphorus Resources Development and Utilization of Ministry of Education, School of Environmental Ecology and Biological Engineering, Wuhan Institute of Technology, Wuhan 430205, China
| | - Ruan Chi
- Key Laboratory of Novel Biomass-Based Environmental and Energy Materials in Petroleum and Chemical Industry, Engineering Research Center of Phosphorus Resources Development and Utilization of Ministry of Education, School of Environmental Ecology and Biological Engineering, Wuhan Institute of Technology, Wuhan 430205, China; Hubei Three Gorges Laboratory, Yichang 443007, China
| | - Chunqiao Xiao
- Key Laboratory of Novel Biomass-Based Environmental and Energy Materials in Petroleum and Chemical Industry, Engineering Research Center of Phosphorus Resources Development and Utilization of Ministry of Education, School of Environmental Ecology and Biological Engineering, Wuhan Institute of Technology, Wuhan 430205, China; Hubei Three Gorges Laboratory, Yichang 443007, China.
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Ye Z, Jiang M, Yan F, Cao B, Wang F. Chemical aging of biochar-zero-valent iron composites in groundwater: Impact on Cd(II) and Cr(VI) co-removal. ENVIRONMENTAL RESEARCH 2024; 263:120022. [PMID: 39304017 DOI: 10.1016/j.envres.2024.120022] [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: 07/21/2024] [Revised: 08/27/2024] [Accepted: 09/15/2024] [Indexed: 09/22/2024]
Abstract
Biochar (BC), zero-valent iron (ZVI), and their composites are promising materials for use in permeable reactive barriers, although further research is needed to understand how their properties change during long-term aging in groundwater. In this study, BC, ZVI and their composites (4BC-1ZVI) were subjected to the chemical aging tests in five media (deionized water, NaCl, NaHCO3, CaCl2 and a mixture of CaCl2 and NaHCO3 solutions) for 20 days. After treatment, the microscopic analysis and performance tests for the co-removal of Cd(II) and Cr(VI) were carried out. The results indicated that the removal of Cd(II) by aged 4BC-1ZVI followed a pseudo-second-order model, whereas the removal of Cr(VI) was better fitted with a pseudo-first order model. The aging mechanism of 4BC-1ZVI was primarily governed by iron corrosion/passivation, the reduction of soluble components, and the formation of carbonate minerals. Less Fe3O4/ γ-Fe2O3 was formed during aging in deionized water, NaCl and CaCl2 solutions. The corrosion products, Fe3O4/ γ-Fe2O3, FeCO3 and α/γ-FeOOH, were observed after aging in NaHCO3 and a mixture of NaHCO3 and CaCl2 solutions. The decrease in the soluble components of biochar led to a decrease in cation exchange, while carbonate minerals contributed to Cd(II) precipitation. This work provides insights into the aging processes of BC-ZVI composites for long-term groundwater remediation applications.
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Affiliation(s)
- Zijun Ye
- Institute of Geotechnical Engineering, School of Transportation, Southeast University, Nanjing, 210096, China.
| | - Meiyang Jiang
- Institute of Geotechnical Engineering, School of Transportation, Southeast University, Nanjing, 210096, China
| | - Fangmin Yan
- Institute of Geotechnical Engineering, School of Transportation, Southeast University, Nanjing, 210096, China
| | - Benyi Cao
- School of Sustainability, Civil and Environmental Engineering, University of Surrey, Guildford, Surrey, GU2 7XH, UK
| | - Fei Wang
- Institute of Geotechnical Engineering, School of Transportation, Southeast University, Nanjing, 210096, China.
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Xie J, Wei H, Sun M, Huang L, Zhong J, Wu Y, Zou Q, Chen Z. The performance and mechanism of sulfidated nano-zero-valent iron for the simultaneous stabilization of arsenic and cadmium. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 950:175052. [PMID: 39074744 DOI: 10.1016/j.scitotenv.2024.175052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/29/2024] [Revised: 06/23/2024] [Accepted: 07/24/2024] [Indexed: 07/31/2024]
Abstract
Co-contamination of soil and groundwater with arsenic (As) and cadmium (Cd) is widespread. Sulfidized Nanoscale Zero-Valent Iron (S-nZVI) is effective in removing As and Cd from contaminated environments. However, the mechanisms governing As and Cd removal from systems containing both species are still unclear. This study investigated the effectiveness of S-nZVI in the simultaneous removal of Cd(II) and As(III) from contaminated solutions and their interaction mechanisms. Adsorption experiments were conducted under aerobic conditions to investigate the effect of Cd(II) and As(III) on their co-immobilisation at different As(III) and Cd(II) concentrations. S-nZVI was characterised before and after the reaction to elucidate the mechanism of its simultaneous immobilisation of As(III) and Cd(II). Batch experiments revealed that the presence of Cd(II) and As(III) together considerably promotes the passivation of S-nZVI. The adsorption of Cd(II) at Cd:As = 1:3 was 198.37 mg/g, which was 27.6 % higher than that in Cd(II)-only systems, and the adsorption of As(III) at As:Cd = 1:3 was 204.05 mg/g, which was 175 % higher than that in As(III)-only systems. The results of X-ray photoelectron spectroscopy and Fourier-transform infrared spectroscopy indicated that the removal of Cd(II) and As(III) by S-nZVI involves electrostatic adsorption, complexation and oxidation reactions, amongst which electrostatic adsorption and ternary-complex generation are responsible for the synergistic effect. As and Cd ions can form two types of surface complexes with FeOH or FeS on the outer layer of S-nZVI: anionic bridging to form Fe-As-Cd and cationic bridging to form Fe-Cd-As. This investigation elucidates the synergistic action of Cd(II) and As(III) during their removal using S-nZVI. Thus, S-nZVI is a promising material for the combined removal of Cd(II) and As(III), which can mitigate environmental pollution.
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Affiliation(s)
- JianXiong Xie
- Guangdong Engineering Technology Research Center of Heavy Metal Pollution Control and Restoration in Farmland Soil, South China Institute of Environmental Sciences, MEE, Guangzhou 510535, China; Chinese Research Academy of Environmental Sciences, Beijing 10012, China
| | - Hang Wei
- Guangdong Engineering Technology Research Center of Heavy Metal Pollution Control and Restoration in Farmland Soil, South China Institute of Environmental Sciences, MEE, Guangzhou 510535, China.
| | - MengQiang Sun
- Guangdong Engineering Technology Research Center of Heavy Metal Pollution Control and Restoration in Farmland Soil, South China Institute of Environmental Sciences, MEE, Guangzhou 510535, China
| | - Ling Huang
- Guangdong Engineering Technology Research Center of Heavy Metal Pollution Control and Restoration in Farmland Soil, South China Institute of Environmental Sciences, MEE, Guangzhou 510535, China
| | - Jie Zhong
- Guangdong Engineering Technology Research Center of Heavy Metal Pollution Control and Restoration in Farmland Soil, South China Institute of Environmental Sciences, MEE, Guangzhou 510535, China
| | - YuHui Wu
- Guangdong Engineering Technology Research Center of Heavy Metal Pollution Control and Restoration in Farmland Soil, South China Institute of Environmental Sciences, MEE, Guangzhou 510535, China
| | - Qi Zou
- Guangdong Engineering Technology Research Center of Heavy Metal Pollution Control and Restoration in Farmland Soil, South China Institute of Environmental Sciences, MEE, Guangzhou 510535, China
| | - Zhiliang Chen
- Guangdong Engineering Technology Research Center of Heavy Metal Pollution Control and Restoration in Farmland Soil, South China Institute of Environmental Sciences, MEE, Guangzhou 510535, China; Chinese Research Academy of Environmental Sciences, Beijing 10012, China.
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Králik M, Koóš P, Markovič M, Lopatka P. Organic and Metal-Organic Polymer-Based Catalysts-Enfant Terrible Companions or Good Assistants? Molecules 2024; 29:4623. [PMID: 39407552 PMCID: PMC11477782 DOI: 10.3390/molecules29194623] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2024] [Revised: 09/22/2024] [Accepted: 09/26/2024] [Indexed: 10/20/2024] Open
Abstract
This overview provides insights into organic and metal-organic polymer (OMOP) catalysts aimed at processes carried out in the liquid phase. Various types of polymers are discussed, including vinyl (various functional poly(styrene-co-divinylbenzene) and perfluorinated functionalized hydrocarbons, e.g., Nafion), condensation (polyesters, -amides, -anilines, -imides), and additional (polyurethanes, and polyureas, polybenzimidazoles, polyporphyrins), prepared from organometal monomers. Covalent organic frameworks (COFs), metal-organic frameworks (MOFs), and their composites represent a significant class of OMOP catalysts. Following this, the preparation, characterization, and application of dispersed metal catalysts are discussed. Key catalytic processes such as alkylation-used in large-scale applications like the production of alkyl-tert-butyl ether and bisphenol A-as well as reduction, oxidation, and other reactions, are highlighted. The versatile properties of COFs and MOFs, including well-defined nanometer-scale pores, large surface areas, and excellent chemisorption capabilities, make them highly promising for chemical, electrochemical, and photocatalytic applications. Particular emphasis is placed on their potential for CO2 treatment. However, a notable drawback of COF- and MOF-based catalysts is their relatively low stability in both alkaline and acidic environments, as well as their high cost. A special part is devoted to deactivation and the disposal of the used/deactivated catalysts, emphasizing the importance of separating heavy metals from catalysts. The conclusion provides guidance on selecting and developing OMOP-based catalysts.
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Affiliation(s)
- Milan Králik
- Institute of Organic Chemistry, Catalysis and Petrochemistry, Slovak University of Technology, Radlinského 9, 812 37 Bratislava, Slovakia; (M.M.); (P.L.)
| | - Peter Koóš
- Institute of Organic Chemistry, Catalysis and Petrochemistry, Slovak University of Technology, Radlinského 9, 812 37 Bratislava, Slovakia; (M.M.); (P.L.)
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Xiao X, He X, Ji C, Li L, Zhou M, Yin X, Shan Y, Wang M, Zhao Y. Activation of persulfate by g-C 3N 4/nZVI@SBC for degradation of total petroleum hydrocarbon in groundwater. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 356:120612. [PMID: 38537465 DOI: 10.1016/j.jenvman.2024.120612] [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: 11/04/2023] [Revised: 03/02/2024] [Accepted: 03/10/2024] [Indexed: 04/07/2024]
Abstract
In this study, we synthesized a high removal efficiency catalyst using biochar-supported nanoscale zero-valent iron and g-C3N4, denoted as g-C3N4/nZVI@SBC, to activate persulfate (PS) for the degradation of total petroleum hydrocarbon (TPH) in groundwater. We characterized the morphology and physiochemical properties of g-C3N4/nZVI@SBC with scanning electron microscopy (SEM), X-ray diffraction (XRD), Fourier transform infrared (FTIR), BET surface area analysis, and X-ray photoelectron spectroscopy (XPS). To assess the performance of the g-C3N4/nZVI@SBC catalyst, we investigated various reaction parameters, such as the mass ratio of g-C3N4 to nZVI@SBC, PS concentration, initial pH, initial TPH concentration, and the presence of coexisting ions in the system. The results from batch experiments and repeated use trials indicate that g-C3N4/nZVI@SBC exhibited both excellent catalytic activation capability and impressive durability, making it a promising choice for TPH degradation. Specifically, when the PS concentration reached 1 mM, the catalyst dosage was 0.3 g/L, and the g-C3N4 to nZVI@SBC mass ratio was 2, we achieved a remarkable TPH removal efficiency of 93.8%. Through electron paramagnetic resonance (EPR) testing and quenching experiments, we identified sulfate radicals, hydroxyl radicals, and superoxide radicals as the primary active substance involved in the TPH degradation process. Moreover, the g-C3N4/nZVI@SBC composite proved highly effective for in-situ TPH removal from groundwater and displayed an 86% removal rate, making it a valuable candidate for applications in permeable reactive barriers (PRB) aimed at enhancing environmental remediation. In summary, by skillfully utilizing g-C3N4/nZVI@SBC, this study has made notable advancements in synthesis and characterization, presenting a feasible and innovative approach to addressing TPH pollution in groundwater.
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Affiliation(s)
- Xian Xiao
- School of Environmental Science and Engineering, Changzhou University, Changzhou, 213164, China
| | - Xingguo He
- School of Environmental Science and Engineering, Changzhou University, Changzhou, 213164, China
| | - Caiya Ji
- School of Environmental Science and Engineering, Changzhou University, Changzhou, 213164, China
| | - Liangzhong Li
- State Environmental Protection Key Laboratory of Environmental Pollution Health Risk Assessment, Center for Environmental Health Research, South China Institute of Environmental Sciences, The Ministry of Ecological and Environment of China, Guangzhou, 510655, China
| | - Meichun Zhou
- Jiangsu Zhongwu Environmental Protection Industry Development Co., Ltd., Changzhou, 213164, China
| | - Xinyu Yin
- School of Environmental Science and Engineering, Changzhou University, Changzhou, 213164, China
| | - Yong Shan
- School of Environmental Science and Engineering, Changzhou University, Changzhou, 213164, China
| | - Mingyu Wang
- School of Environmental Science and Engineering, Changzhou University, Changzhou, 213164, China
| | - Yuan Zhao
- School of Environmental Science and Engineering, Changzhou University, Changzhou, 213164, China.
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9
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Lu H, Wang X, Cong Q, Chen X, Li Q, Li X, Zhong S, Deng H, Yan B. Research Progress on the Degradation of Organic Pollutants in Water by Activated Persulfate Using Biochar-Loaded Nano Zero-Valent Iron. Molecules 2024; 29:1130. [PMID: 38474642 DOI: 10.3390/molecules29051130] [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: 01/25/2024] [Revised: 02/20/2024] [Accepted: 02/29/2024] [Indexed: 03/14/2024] Open
Abstract
Biochar (BC) is a new type of carbon material with a high specific surface area, porous structure, and good adsorption capacity, which can effectively adsorb and enrich organic pollutants. Meanwhile, nano zero-valent iron (nZVI) has excellent catalytic activity and can rapidly degrade organic pollutants through reduction and oxidation reactions. The combined utilization of BC and nZVI can not only give full play to their advantages in the adsorption and catalytic degradation of organic pollutants, but also help to reduce the agglomeration of nZVI, thus improving its efficiency in water treatment and providing strong technical support for water resources protection and environmental quality improvement. This article provides a detailed introduction to the preparation method and characterization technology, reaction mechanism, influencing factors, and specific applications of BC and nZVI, and elaborates on the research progress of BC-nZVI in activating persulfate (PS) to degrade organic pollutants in water. It has been proven experimentally that BC-nZVI can effectively remove phenols, dyes, pesticides, and other organic pollutants. Meanwhile, in response to the existing problems in current research, this article proposes future research directions and challenges, and summarizes the application prospects and development trends of BC-nZVI in water treatment. In summary, BC-nZVI-activated PS is an efficient technology for degrading organic pollutants in water, providing an effective solution for protecting water resources and improving environmental quality, and has significant application value.
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Affiliation(s)
- Hai Lu
- Key Laboratory of Songliao Aquatic Environment, Ministry of Education, Jilin Jianzhu University, Changchun 130118, China
| | - Xiaoyan Wang
- Key Laboratory of Songliao Aquatic Environment, Ministry of Education, Jilin Jianzhu University, Changchun 130118, China
| | - Qiao Cong
- Key Laboratory of Songliao Aquatic Environment, Ministry of Education, Jilin Jianzhu University, Changchun 130118, China
| | - Xinglin Chen
- Key Laboratory of Songliao Aquatic Environment, Ministry of Education, Jilin Jianzhu University, Changchun 130118, China
| | - Qingpo Li
- Key Laboratory of Songliao Aquatic Environment, Ministry of Education, Jilin Jianzhu University, Changchun 130118, China
| | - Xueqi Li
- Urban Construction College, Changchun University of Architecture, Changchun 130607, China
| | - Shuang Zhong
- Key Laboratory of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun 130021, China
| | - Huan Deng
- College of Visual Arts, Changchun Sci-Tech University, Changchun 130600, China
| | - Bojiao Yan
- College of Visual Arts, Changchun Sci-Tech University, Changchun 130600, China
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10
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Yuan M, Liu D, Shang S, Song Z, You Q, Huang L, Cui S. A novel magnetic Fe 3O 4/cellulose nanofiber/polyethyleneimine/thiol-modified montmorillonite aerogel for efficient removal of heavy metal ions: Adsorption behavior and mechanism study. Int J Biol Macromol 2023; 253:126634. [PMID: 37678684 DOI: 10.1016/j.ijbiomac.2023.126634] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Revised: 08/17/2023] [Accepted: 08/29/2023] [Indexed: 09/09/2023]
Abstract
To efficiently remove heavy metals from wastewater, designing an adsorbent with high adsorption capacity and ease of recovery is necessary. This paper presents a novel magnetic hybridized aerogel, Fe3O4/cellulose nanofiber/polyethyleneimine/thiol-modified montmorillonite (Fe3O4/CNF/PEI/SHMMT), and explores its adsorption performance and mechanism for Pb2+, Cu2+, and Cd2+ in aqueous solutions. The hybrid aerogel has a slit-like porous structure and numerous exposed active sites, which facilitates the uptake of metal ions by adsorption. Pb2+, Cu2+, and Cd2+ adsorption by the hybridized aerogel followed the second-order kinetics and the Langmuir isotherm model, the maximum adsorption of Pb2+, Cu2+, and Cd2+ at 25 °C, pH = 6, 800 mg/L was 429.18, 381.68 and 299.40 mg/g, respectively. The adsorption process was primarily attributed to monolayer chemical adsorption, a spontaneous heat-absorption reaction. FTIR, XPS and DFT studies confirmed that the adsorption mechanisms of Fe3O4/CNF/PEI/SHMMT on Pb2+, Cu2+, and Cd2+ were mainly chelation, coordination, and ion exchange. The lowest adsorption energy of Pb2+ on the hybrid aerogel was calculated to be -2.37 Ha by DFT, which indicates that the sample has higher adsorption affinity and preferential selectivity for Pb2+. After 5 cycles, the adsorption efficiency of the aerogel was still >85 %. The incorporation of Fe3O4 improved the mechanical properties of the aerogel. The Fe3O4/CNF/PEI/SHMMT has fast magnetic responsiveness, and it is easy to be separated and recovered after adsorption, which is a promising potential for the treatment of heavy metal ions.
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Affiliation(s)
- Man Yuan
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Materials Science and Engineering, Nanjing Tech University, 211800 Nanjing, China; Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Nanjing Tech University, 211800 Nanjing, China
| | - Dongsheng Liu
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Materials Science and Engineering, Nanjing Tech University, 211800 Nanjing, China; Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Nanjing Tech University, 211800 Nanjing, China
| | - Sisi Shang
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Materials Science and Engineering, Nanjing Tech University, 211800 Nanjing, China; Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Nanjing Tech University, 211800 Nanjing, China
| | - Zihao Song
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Materials Science and Engineering, Nanjing Tech University, 211800 Nanjing, China; Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Nanjing Tech University, 211800 Nanjing, China
| | - Qi You
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Materials Science and Engineering, Nanjing Tech University, 211800 Nanjing, China; Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Nanjing Tech University, 211800 Nanjing, China
| | - Longjin Huang
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Materials Science and Engineering, Nanjing Tech University, 211800 Nanjing, China; Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Nanjing Tech University, 211800 Nanjing, China
| | - Sheng Cui
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Materials Science and Engineering, Nanjing Tech University, 211800 Nanjing, China; Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Nanjing Tech University, 211800 Nanjing, China.
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11
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Zhang L, Hu J, Li C, Chen Y, Zheng L, Ding D, Shan S. Synergistic mechanism of iron manganese supported biochar for arsenic remediation and enzyme activity in contaminated soil. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 347:119127. [PMID: 37797510 DOI: 10.1016/j.jenvman.2023.119127] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Revised: 07/04/2023] [Accepted: 08/30/2023] [Indexed: 10/07/2023]
Abstract
This study prepared and characterized bamboo-derived biochar loaded with different ratios of iron and manganese; evaluated its remediation performance in arsenic-contaminated soil by studying the changes in various environmental factors, arsenic speciation, and arsenic leaching amount in the soil after adding different materials; proposed the optimal ratio and mechanism of iron-manganese removal of arsenic; and explained the multivariate relationship between enzyme activity and soil environmental factors based on biological information. Treatment with Fe-Mn-modified biochar increased the organic matter, cation exchange capacity, and N, P, K, and other nutrient contents. During the remediation process, O-containing functional groups such as Mn-O/As and Fe-O/As were formed on the surface of the biochar, promoting the transformation of As from the mobile fraction to the residual fraction and reducing the phytotoxicity of As, and the remediation ability for As was superior to that of Fe-modified biochar. Mn is indispensable in the FeMn-BC synergistic remediation of As, as it can increase the adsorption sites and the number of functional groups for trace metals on the surface of biochar. In addition to electrostatic attraction, the synergistic mechanism of ferromanganese-modified biochar for arsenic mainly involves redox and complexation. Mn oxidizes As(Ⅲ) to more inert As(V). In this reaction process, Mn(Ⅳ) is reduced to Mn(Ⅲ) and Mn(II), promoting the formation of Fe(Ⅲ) and the conversion of As into Fe-As complexes, while As is fixed due to the formation of ternary surface complexes. Moreover, the effect of adding Fe-Mn-modified biochar on soil enzyme activity was correlated with changes in soil environmental factors; catalase was correlated with soil pH; neutral phosphatase was correlated with soil organic matter; urease was correlated with ammonia nitrogen, and sucrase activity was not significant. This study highlights the potential value of FM1:3-BC as a remediation agent in arsenic-contaminated neutral soils.
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Affiliation(s)
- Liqun Zhang
- School of Resources and Environmental Engineering, Anhui University, Hefei 230601, China; Anhui Province Engineering Laboratory for Mine Ecological Remediation, Hefei 230601, China
| | - Jie Hu
- School of Resources and Environmental Engineering, Anhui University, Hefei 230601, China; Anhui Province Engineering Laboratory for Mine Ecological Remediation, Hefei 230601, China
| | - Chang Li
- School of Resources and Environmental Engineering, Anhui University, Hefei 230601, China; Anhui Province Engineering Laboratory for Mine Ecological Remediation, Hefei 230601, China
| | - Yeyu Chen
- School of Resources and Environmental Engineering, Anhui University, Hefei 230601, China; Anhui Province Engineering Laboratory for Mine Ecological Remediation, Hefei 230601, China
| | - Liugen Zheng
- School of Resources and Environmental Engineering, Anhui University, Hefei 230601, China; Anhui Province Engineering Laboratory for Mine Ecological Remediation, Hefei 230601, China.
| | - Dan Ding
- Anhui General Industrial Solid Waste Disposal and Resource Utilization Engineering Research Center, Tongling 244000, China
| | - Shifeng Shan
- Anhui General Industrial Solid Waste Disposal and Resource Utilization Engineering Research Center, Tongling 244000, China
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12
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Chen A, Huang Y, Liu H. Fabrication of Chitin microspheres supported sulfidated nano zerovalent iron and their performance in Cr (VI) removal. CHEMOSPHERE 2023; 338:139609. [PMID: 37482322 DOI: 10.1016/j.chemosphere.2023.139609] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Revised: 07/03/2023] [Accepted: 07/20/2023] [Indexed: 07/25/2023]
Abstract
Sulfidated nanoscale zerovalent iron (S-nZVI) has been extensively studied for the reductive removal of Cr(VI), but its applicability is limited by agglomeration and unexpected efficiency reduction. In this study, chitin microsphere supported sulfidated nanoscale zero-valent iron (S-nZVI@Chi-M) was prepared by in-situ one-step reduction method and used to remove Cr(VI) from water. Compared to chitin and chitosan powder, Chi-M with nanofibrous structure and large surface area performed best in stabilizing S-nZVI with a Fe0 loading content of 3.01 wt%. The S-nZVI particles were homogeneously distributed on the surface of Chi-M, effectively avoiding agglomeration. Compared with bare nanoparticles and supported nZVI, S-nZVI@Chi-M showed significantly enhanced Cr(VI) removal capacity (924.5 mg Cr(VI) for per gram of effective Fe0). The influences of sulfidation degree, dosages, initial Cr(VI) concentration, pH, DO, humic acid and typical ions on Cr(VI) removal kinetics were further studied. S-nZVI@Chi-M could be recycled for at least 4 times with acceptable reactivity. The mechanism investigation results indicated that the Cr(VI) removal was a complex process of reduction, adsorption and co-precipitation under the synergistic effect of Chi-M and S-nZVI. This work provides new ideas for the continuous fabrication of highly reactive nanoparticles, hopefully expanding the application scope of biomass resources in pollution remediation.
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Affiliation(s)
- Aikui Chen
- Hubei Key Laboratory of Yangtze Catchment Environmental Aquatic Science, School of Environmental Studies, China University of Geosciences, Wuhan, 430078, China.
| | - Yao Huang
- Hubei Key Laboratory of Yangtze Catchment Environmental Aquatic Science, School of Environmental Studies, China University of Geosciences, Wuhan, 430078, China.
| | - Hui Liu
- Hubei Key Laboratory of Yangtze Catchment Environmental Aquatic Science, School of Environmental Studies, China University of Geosciences, Wuhan, 430078, China; State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan, 430078, China
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13
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He Y, Ni L, Gao Q, Ren H, Su M, Hou Y, Liu Z. Activated Carbon with Ultrahigh Specific Surface Derived from Bamboo Shoot Shell through K 2FeO 4 Oxidative Pyrolysis for Adsorption of Methylene Blue. Molecules 2023; 28:molecules28083410. [PMID: 37110642 PMCID: PMC10145064 DOI: 10.3390/molecules28083410] [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: 03/03/2023] [Revised: 03/29/2023] [Accepted: 04/06/2023] [Indexed: 04/29/2023] Open
Abstract
To effectively remove methylene blue (MB) from dye wastewater, a novel activated carbon (BAC) was manufactured through co-pyrolysis of bamboo shoot shell and K2FeO4. The activation process was optimized to a temperature of 750 °C and an activation time of 90 min based on its excellent adsorption capacity of 560.94 mg/g with a yield of 10.03%. The physicochemical and adsorption properties of BACs were investigated. The BAC had an ultrahigh specific surface area of 2327.7 cm2/g and abundant active functional groups. The adsorption mechanisms included chemisorption and physisorption. The Freundlich model could be used to describe the isothermal adsorption of MB. The kinetics confirmed that the adsorption of MB belonged to the pseudo-second-order model. Intra-particle diffusion was the main rate-limiting step. The thermodynamic study showed that the adsorption process was endothermic and temperature was beneficial for the improvement of adsorption property. Furthermore, the removal rate of MB was 63.5% after three cycles. The BAC will have great potential for commercial development for purifying dye wastewater.
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Affiliation(s)
- Yuyu He
- International Centre for Bamboo and Rattan, Beijing 100102, China
- Key Laboratory of NFGA/Beijing for Bamboo & Rattan Science and Technology, Beijing 100102, China
| | - Liangmeng Ni
- International Centre for Bamboo and Rattan, Beijing 100102, China
- Key Laboratory of NFGA/Beijing for Bamboo & Rattan Science and Technology, Beijing 100102, China
| | - Qi Gao
- International Centre for Bamboo and Rattan, Beijing 100102, China
- Key Laboratory of NFGA/Beijing for Bamboo & Rattan Science and Technology, Beijing 100102, China
| | - Hao Ren
- International Centre for Bamboo and Rattan, Beijing 100102, China
- Key Laboratory of NFGA/Beijing for Bamboo & Rattan Science and Technology, Beijing 100102, China
| | - Mengfu Su
- International Centre for Bamboo and Rattan, Beijing 100102, China
- Key Laboratory of NFGA/Beijing for Bamboo & Rattan Science and Technology, Beijing 100102, China
| | - Yanmei Hou
- International Centre for Bamboo and Rattan, Beijing 100102, China
- Key Laboratory of NFGA/Beijing for Bamboo & Rattan Science and Technology, Beijing 100102, China
| | - Zhijia Liu
- International Centre for Bamboo and Rattan, Beijing 100102, China
- Key Laboratory of NFGA/Beijing for Bamboo & Rattan Science and Technology, Beijing 100102, China
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14
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Wang FP, Zeng YN, Wang YT, Li JG, Zhang X, Ji AM, Kang LL, Ji R, Yu Q, Gao D, Wang XM, Fang Z. Highly efficient removal of hexavalent chromium by magnetic Fe-C composite from reed straw and electric furnace dust waste. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:33737-33755. [PMID: 36495434 DOI: 10.1007/s11356-022-24491-7] [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: 07/04/2022] [Accepted: 11/27/2022] [Indexed: 06/17/2023]
Abstract
Reed straw and electric furnace dust (EFD) waste were used to prepare magnetic Fe-C composite (EFD&C) by co-precipitation and high-temperature activation method to remove Cr(VI) from water. The magnetic EFD&C owned a large specific surface (536.61 m2/g) and a porous structure (micropores and mesopores), and had an efficient removal capacity for Cr(VI). Under conditions of pH (2), the addition amount of EFD&C (1 g/L), the adsorption time (760 min), and the temperature (45 °C), the maximum adsorption capacity reached 111.94 mg/g. The adsorption mechanism mainly attributed to chemical adsorption (redox), Cr(VI) reduced to Cr(III) by Fe(II) and Fe(0) (from Fe3O4 and Fe components in EFD) and surface functional groups of -OH, C = C, C-C and O-C = O (from biochar), and secondary attributed to physical adsorption, Cr(VI) and Cr(III) (from reduced Cr(VI)) adsorbed into the porous structure of EFD&C. This study provided a feasible solution for the preparation of adsorbents for adsorbing heavy metals from iron-containing metallurgical solid waste and biomass waste, which contributed to reducing the environmental pollution and lowering the cost of adsorbent preparation.
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Affiliation(s)
- Fu-Ping Wang
- College of Metallurgy and Energy, North China University of Science and Technology, 21 Bohai Street, Tangshan, 063210, China
| | - Ya-Nan Zeng
- College of Metallurgy and Energy, North China University of Science and Technology, 21 Bohai Street, Tangshan, 063210, China
| | - Yi-Tong Wang
- College of Metallurgy and Energy, North China University of Science and Technology, 21 Bohai Street, Tangshan, 063210, China.
| | - Jun-Guo Li
- College of Metallurgy and Energy, North China University of Science and Technology, 21 Bohai Street, Tangshan, 063210, China
| | - Xi Zhang
- College of Metallurgy and Energy, North China University of Science and Technology, 21 Bohai Street, Tangshan, 063210, China
| | - Ai-Min Ji
- College of Metallurgy and Energy, North China University of Science and Technology, 21 Bohai Street, Tangshan, 063210, China
| | - Le-Le Kang
- College of Metallurgy and Energy, North China University of Science and Technology, 21 Bohai Street, Tangshan, 063210, China
| | - Rui Ji
- College of Metallurgy and Energy, North China University of Science and Technology, 21 Bohai Street, Tangshan, 063210, China
| | - Qing Yu
- College of Metallurgy and Energy, North China University of Science and Technology, 21 Bohai Street, Tangshan, 063210, China
| | - Di Gao
- College of Metallurgy and Energy, North China University of Science and Technology, 21 Bohai Street, Tangshan, 063210, China
| | - Xiao-Man Wang
- College of Metallurgy and Energy, North China University of Science and Technology, 21 Bohai Street, Tangshan, 063210, China
| | - Zhen Fang
- Biomass Group, College of Engineering, Nanjing Agricultural University, 40 Dianjiangtai Road, Nanjing, 210031, China
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15
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Zhang X, Shi C, Hu H, Zhou Z, Zhao X. Complexation and degradation of tetracycline by activation of molecular oxygen with biochar-supported nano-zero-valent copper composite. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:34827-34839. [PMID: 36520295 DOI: 10.1007/s11356-022-24489-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Accepted: 11/27/2022] [Indexed: 06/17/2023]
Abstract
Nano-zero-valent copper (nZVC) is a superior molecular oxygen (O2) activator for the abatement of organic pollutants due to its high electron utilization rate. However, the activation efficiency of O2 is compromised by the agglomeration tendency of nZVC particles and the concomitant reduction of the available active sites. To address this problem, the biochar (BC) with porous structure and abundant surface functional groups is utilized to disperse and stabilize nZVC for O2 activation (simplified as the nZVC/BC/O2 system) for efficient removal of tetracycline (TC). The nZVC/BC composite possesses a high specific area with well-distributed nZVC particles on the BC surface, which guarantees the superior dispersion and high reactivity in the activation of O2. The efficacy of the nZVC/BC/O2 system for TC abatement is evaluated and the underlying mechanism is elucidated. The results show that nZVC/BC/O2 system can achieve excellent removal of TC with the efficiencies of more than 85% in the pH range of 4.0-9.0, which originated from the combined action of complexation and degradation. The degradation is dominated by reactive oxygen species (ROS) including •OH, •O2- and 1O2 generated by Cu0/Cu+ activated O2 while the generation of Cu2+ via oxygen oxidation on the surface of nZVC/BC can remove TC by complexation adsorption. This study highlights the complexation and degradation in the removal of TC and can be expected to exhibit application prospects in the water and wastewater treatment.
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Affiliation(s)
- Xianfa Zhang
- College of Chemical Engineering, Huaqiao University, Xiamen, 361021, China
| | - Chang Shi
- College of Chemical Engineering, Huaqiao University, Xiamen, 361021, China
| | - Hanjun Hu
- College of Chemical Engineering, Huaqiao University, Xiamen, 361021, China
| | - Zuoming Zhou
- College of Chemical Engineering, Huaqiao University, Xiamen, 361021, China.
- Department of Environmental Science & Engineering, Huaqiao University, Xiamen, 361021, Fujian, China.
| | - Xiaodan Zhao
- College of Chemical Engineering, Huaqiao University, Xiamen, 361021, China
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16
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Zhong W, Bai W, Li G. Reduction of Hexavalent Chromium from Soil of the Relocated Factory Area with Rice Straw Hydrothermal Carbon Modified by Nano Zero-Valent Iron (nZVI). INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2023; 20:3089. [PMID: 36833784 PMCID: PMC9967011 DOI: 10.3390/ijerph20043089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/31/2022] [Revised: 02/06/2023] [Accepted: 02/07/2023] [Indexed: 06/18/2023]
Abstract
In order to reduce the content of Cr(VI) in the soil of the relocated chromium salt factory, the rice straw-derived hydrothermal carbon was prepared by hydrothermal method and loaded with nano zero-valent iron generated by liquid phase reduction, which effectively alleviated the self-aggregation problem of nano zero-valent iron (nZVI) in the treatment of Cr(VI) and improved the Cr(VI) reduction rate without changing the soil structure. The reduction effect of Cr(VI) in soil by key influencing factors such as carbon-iron ratio, initial pH value, and initial temperature was investigated. The results showed that nZVI modified hydro-thermal carbon composite (named RC-nZVI) had a good reduction effect on Cr(VI). Scanning electron microscope (SEM) and energy spectrum analysis showed that nZVI was evenly distributed on the surface of hydrothermal carbon, which effectively reduced the agglomeration of iron. Under the conditions of C/Fe = 1:2, 60 °C, with pH of 2, the average Cr(VI) content in soil decreased from 182.9 mg kg-1 to 21.6 mg kg-1. Adsorption kinetics of Cr(VI) by RC-nZVI fit well with the pseudo-second-order model, and the kinetic velocity constant revealed that Cr(VI) reduction rate decreased with increasing initial Cr(VI) concentration. Cr(VI) reduction by RC-nZVI was mainly dominated by chemical adsorption.
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Affiliation(s)
| | - Weiyang Bai
- Department of Chemistry and Chemical Engineering, Chongqing University of Technology, Chongqing 400054, China
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17
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Magnetic Activated Biochar Fe3O4-MOS Made from Moringa Seed Shells for the Adsorption of Methylene Blue. Processes (Basel) 2022. [DOI: 10.3390/pr10122720] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
In recent years, more and more biochars have been employed to treat dye wastewater. In order to increase the utilization of moringa seed shell resources and enrich the removal method of methylene blue (MB) in solution, in the current study, the magnetic moringa seed shells biochar was prepared through ultrasonic-assisted impregnation and pyrolysis, while Fe3O4 was used to activate the material to obtain adsorption (Fe3O4-MOS). The prepared adsorbents were characterized by SEM-EDS, XRD, XPS, FTIR, N2 adsorption and desorption and VSM. Under the suitable experimental conditions, the removal rate can be close to 100% and the maximum adsorption capacity of MB could be 219.60 mg/g. The Freundlich model provided a good match to the data presented by the adsorption isotherm, and the adsorption of MB on Fe3O4-MOS was a spontaneous and endothermic reaction. Study of the mechanism indicated that pore adsorption, electrostatic interaction, hydrogen bond, and π-π interaction were the major adsorption mechanisms. After five cycles, it was found that Fe3O4-MOS had a high removal rate for MB, which was close to 90%. This work provides a new idea for moringa seed shells and the results confirm that Fe3O4-MOS has substantial potential for dye wastewater treatment.
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18
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Wang T, Sun Y, Bai L, Han C, Sun X. Ultrafast removal of Cr(VI) by chitosan coated biochar-supported nano zero-valent iron aerogel from aqueous solution: Application performance and reaction mechanism. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.122631] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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19
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Simultaneous removal of cationic heavy metals and arsenic from drinking water by an activated carbon supported nanoscale zero-valent iron and nanosilver composite. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.129581] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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20
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Wei Y, Chu R, Zhang Q, Usman M, Haider FU, Cai L. Nano zero-valent iron loaded corn-straw biochar for efficient removal of hexavalent chromium: remediation performance and interfacial chemical behaviour. RSC Adv 2022; 12:26953-26965. [PMID: 36320854 PMCID: PMC9534316 DOI: 10.1039/d2ra04650d] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Accepted: 08/24/2022] [Indexed: 11/06/2022] Open
Abstract
To improve the poor stability of nano zero-valent iron (nZVI), corn-straw biochar (BC) was used as a support for the synthesis of composites of nZVI-biochar (nZVI/BC) in different mass ratios. After a thorough characterization, the obtained nZVI/BC composite was used to remove hexavalent chromium [Cr(vi)] in an aquatic system under varying conditions including composite amount, Cr(vi) concentration, and pH. The obtained results show that the treatment efficiency varied in the following order: nZVI-BC (1 : 3) > nZVI-BC (1 : 5) > nZVI alone > BC alone. This order indicates the higher efficiency of composite material and the positive effect of nZVI content in the composite. Similarly, the composite dosage and Cr(vi) concentration had significant effects on the removal performance and 2 g L-1 and 6 g L-1 were considered to be the optimum dose at a Cr(vi) concentration of 20 mg L-1 and 100 mg L-1, respectively. The removal efficiency was maximum (100%) at pH 2 whereas solution pH increased significantly after the reaction (from 2 to 4.13). The removal kinetics of Cr(vi) was described by a pseudo-second-order model which indicated that the removal process was mainly controlled by the rate of chemical adsorption. The thermodynamics was more in line with the Freundlich model which indicated that the removal was multi-molecular layer adsorption. TEM-EDS, XRD, and XPS were applied to characterize the crystal lattice and structural changes of the material to specify the interfacial chemical behaviour on the agent surface. These techniques demonstrate that the underlying mechanisms of Cr(vi) removal include adsorption, chemical reduction-oxidation reaction, and co-precipitation on the surface of the nZVI-BC composite. The results indicated that the corn-straw BC as a carrier material highly improved Cr(vi) removal performance of nZVI and offered better utilization of the corn straw.
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Affiliation(s)
- Yuzhen Wei
- College of Forestry, Gansu Agricultural University Lanzhou 730070 P. R. China
- College of Resources and Environmental Sciences, Gansu Agricultural University Lanzhou 730070 P. R. China
- Gansu Provincial Key Laboratory of Arid Land Crop Science, Gansu Agricultural University Lanzhou 730070 P. R. China
| | - Run Chu
- College of Resources and Environmental Sciences, Gansu Agricultural University Lanzhou 730070 P. R. China
| | - Qinhu Zhang
- College of Resources and Environmental Sciences, Gansu Agricultural University Lanzhou 730070 P. R. China
| | - Muhammad Usman
- PEIE Research Chair for the Development of Industrial Estates and Free Zones, Centre for Environmental Studies and Research, Sultan Qaboos University Al-Khoud 123 Muscat Oman
| | - Fasih Ullah Haider
- College of Resources and Environmental Sciences, Gansu Agricultural University Lanzhou 730070 P. R. China
- Gansu Provincial Key Laboratory of Arid Land Crop Science, Gansu Agricultural University Lanzhou 730070 P. R. China
| | - Liqun Cai
- College of Forestry, Gansu Agricultural University Lanzhou 730070 P. R. China
- College of Resources and Environmental Sciences, Gansu Agricultural University Lanzhou 730070 P. R. China
- Gansu Provincial Key Laboratory of Arid Land Crop Science, Gansu Agricultural University Lanzhou 730070 P. R. China
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21
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Wu W, Liu Z, Azeem M, Guo Z, Li R, Li Y, Peng Y, Ali EF, Wang H, Wang S, Rinklebe J, Shaheen SM, Zhang Z. Hydroxyapatite tailored hierarchical porous biochar composite immobilized Cd(II) and Pb(II) and mitigated their hazardous effects in contaminated water and soil. JOURNAL OF HAZARDOUS MATERIALS 2022; 437:129330. [PMID: 35716571 DOI: 10.1016/j.jhazmat.2022.129330] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Revised: 05/11/2022] [Accepted: 06/06/2022] [Indexed: 06/15/2023]
Abstract
A novel composite of hydroxyapatite tailored hierarchical porous biochar (HA-HPB) was synthesized and used for the adsorptive immobilization of Cd(II) and Pb(II) in water and soil. The hierarchical porous biochar (HPB) was prepared from rice husk through a molten-salt-assisted pyrolysis approach; then, a series of HA-HPB (with 0.5, 1, 2, 3, and 4 g of HPB) was prepared with co-precipitation procedure. All HA-HPBs, particularly HA-3HPB, revealed significantly higher removal efficiency of Cd(II) and Pb(II) (≥99.5%) in water than pristine biochar (5.79 - 24.12%). The immobilization efficiency of HA-3HPB for Cd(II) and Pb(II) was slightly inhibited by the ionic strength and co-existing cations. The Langmuir adsorption capacities of Cd(II) and Pb(II) were 88.1 and 110.2 mg/g, respectively. Ion exchange, complexation, cation-π interaction, and precipitation were the key mechanisms involved in the immobilization of Cd(II) and Pb(II) using HA-3HPB. The HA-3HPB reduced the availability of soil Cd (63.5 - 87.8%) and Pb (64.6 - 92.9%) compared to the unamended soil, and thus reduced their content in the Chinese cabbage shoots by 69.3 -95.4% for Cd and 66.5 -97.2% for Pb. These findings demonstrate the effectiveness of HA-HPB for remediation of Cd(II) and Pb(II) contaminated water and soil and mitigating the potential risks.
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Affiliation(s)
- Weilong Wu
- College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, China
| | - Zihan Liu
- College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, China
| | - Muhammad Azeem
- Key Lab of Urban Environmental Processes and Pollution Control, Ningbo Urban Environment Observatory and Monitoring Station, Chinese Academy of Sciences, Ningbo 315830, China; Institute of Soil and Environmental Sciences, Pir Mehr Ali Shah Arid Agriculture University Rawalpindi, Punjab 46300, Pakistan
| | - Zhiqiang Guo
- College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, China
| | - Ronghua Li
- College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, China.
| | - Yage Li
- College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, China
| | - Yaru Peng
- College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, China
| | - Esmat F Ali
- Department of Biology, College of Science, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
| | - Hailong Wang
- Biochar Engineering Technology Research Center of Guangdong Province, School of Environmental and Chemical Engineering, Foshan University, Foshan, Guangdong 528000, China
| | - Shengsen Wang
- College of Environmental Science and Engineering, Yangzhou University, Yangzhou 225127, China
| | - Jörg Rinklebe
- University of Wuppertal, School of Architecture and Civil Engineering, Laboratory of Soil and Groundwater Management, Institute of Foundation Engineering, Water, and Waste-Management, Pauluskirchstraße 7, 42285 Wuppertal, Germany
| | - Sabry M Shaheen
- University of Wuppertal, School of Architecture and Civil Engineering, Laboratory of Soil and Groundwater Management, Institute of Foundation Engineering, Water, and Waste-Management, Pauluskirchstraße 7, 42285 Wuppertal, Germany; King Abdulaziz University, Faculty of Meteorology, Environment, and Arid Land Agriculture, Department of Arid Land Agriculture, 21589 Jeddah, Saudi Arabia; International Research Centre of Nanotechnology for Himalayan Sustainability (IRCNHS), Shoolini University, Solan, 173212 Himachal Pradesh, India.
| | - Zengqiang Zhang
- College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, China
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Khurshid H, Mustafa MRU, Isa MH. Adsorption of chromium, copper, lead and mercury ions from aqueous solution using bio and nano adsorbents: A review of recent trends in the application of AC, BC, nZVI and MXene. ENVIRONMENTAL RESEARCH 2022; 212:113138. [PMID: 35364043 DOI: 10.1016/j.envres.2022.113138] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Revised: 02/18/2022] [Accepted: 03/15/2022] [Indexed: 06/14/2023]
Abstract
Recent trends in adsorption of Chromium (Cr), Copper (Cu), Lead (Pb) and Mercury (Hg) in wastewater using (i) carbonaceous materials including activated carbon (AC) and biochar (BC), and (ii) nanomaterials including nano zero-valent iron (nZVI) and MXenes have been discussed in this paper. It has been found that adsorption capacity depends largely on the adsorbent modification technique, initial pH of wastewater, dosage of adsorbent, contact time and initial concentration of the pollutants. The pH value ranges for maximum removal of Cr, Cu, Pb and Hg have been reported as 2-4, 5-6, 5-8 and 3-8, respectively. Up to 99% removal of metals has been reported using AC, BC, nZVI and MXene. The mechanism involves the reduction and chemical adsorption of metals. AC and BC have a higher surface area (up to 5000 m2/g) compared to nZVI (up to 500 m2/g) and MXene (up to 67.66 m2/g). However, the higher reactivity and regeneration capacity of nZVI and MXene make them suitable adsorbents. From a practical point of view the application of adsorbents for real effluents, cost analysis, regeneration capability and reuse of heavy metals are some aspects that need attention in future studies. The removal efficiencies of AC and BC are comparable to the nZVI and MXene. The cost analysis may be an attractive aspect to decide the future application of these adsorbents at large scale.
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Affiliation(s)
- Hifsa Khurshid
- Department of Civil & Environmental Engineering, Universiti Teknologi PETRONAS, 32610, Seri Iskandar, Perak Darul Ridzuan, Malaysia.
| | - Muhammad Raza Ul Mustafa
- Department of Civil & Environmental Engineering, Universiti Teknologi PETRONAS, 32610, Seri Iskandar, Perak Darul Ridzuan, Malaysia; Centre for Urban Resource Sustainability, Institute of Self-Sustainable Building, Universiti Teknologi PETRONAS, Seri Iskandar, 32610, Perak, Malaysia
| | - Mohamed Hasnain Isa
- Civil Engineering Programme, Faculty of Engineering, Universiti Teknologi Brunei, Tungku Highway, Gadong, BE1410, Brunei Darussalam
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Li Y, Shaheen SM, Azeem M, Zhang L, Feng C, Peng J, Qi W, Liu J, Luo Y, Peng Y, Ali EF, Smith K, Rinklebe J, Zhang Z, Li R. Removal of lead (Pb +2) from contaminated water using a novel MoO 3-biochar composite: Performance and mechanism. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 308:119693. [PMID: 35777593 DOI: 10.1016/j.envpol.2022.119693] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Revised: 06/16/2022] [Accepted: 06/25/2022] [Indexed: 06/15/2023]
Abstract
Removal of toxic chemicals from the environment using novel adsorbents is of great concern. In this study, a novel composite of molybdenum trioxide (MoO3)-engineered biochar (MoO3-BC) was derived from corn straw and synthesized for the removal of Pb(II) from water. The pyrolysis temperature of 600 °C was suitable for the thermal self-assembly of MoO3-BC. Although MoO3-BC had lower SBET (59.3 m2/g) than the pristine BC (157.8 m2/g), it had a stronger adsorption affinity to Pb(II). The Pb(II) removal capacity of MoO3-BC was 229.87 mg/g at pH 4.0, and the adsorptive removal of Pb(II) was fit using a pseudo-second-order model and the Langmuir model. High temperature favored the removal of Pb(II) by MoO3-BC; However, the removal of Pb(II) was inhibited with increasing the ion strength. The MoO3-BC revealed an acceptable stability and reusability, since the removal efficiency of Pb(II) remained above 80.7%, even after 8 cycles. The MoO3-BC effectively reduced ≥99.9% of Pb(II) in the polluted irrigation water. The Pb(II) removal mechanisms involved surface electrostatic attraction, ion exchange and surface complexation. These findings conclude that the MoO3-BC is a novel composite that can be used for the removal of Pb from contaminated water. More studies are needed to investigate the potentiality of MoO3-biochar composite for the removal of other metals from water in a mono and competitive sorption system.
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Affiliation(s)
- Yage Li
- College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, China
| | - Sabry M Shaheen
- University of Wuppertal, School of Architecture and Civil Engineering, Laboratory of Soil and Groundwater Management, Institute of Foundation Engineering, Water- and Waste-Management, Pauluskirchstraße 7, 42285 Wuppertal, Germany; King Abdulaziz University, Faculty of Meteorology, Environment, and Arid Land Agriculture, Department of Arid Land Agriculture, 21589 Jeddah, Saudi Arabia; International Research Centre of Nanotechnology for Himalayan Sustainability (IRCNHS), Shoolini University, Solan, 173212 Himachal Pradesh, India.
| | - Muhammad Azeem
- Key Laboratory of Urban Environment and Health, Ningbo Observation and Research Station, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, China; Institute of Soil and Environmental Sciences, Pir Mehr Ali Shah Arid Agriculture University Rawalpindi, Punjab, 46300, Pakistan
| | - Lan Zhang
- College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, China
| | - Chuchu Feng
- College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, China
| | - Jin Peng
- College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, China
| | - Weidong Qi
- College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, China
| | - Junxi Liu
- College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, China
| | - Yuan Luo
- College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, China
| | - Yaru Peng
- College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, China
| | - Esmat F Ali
- Department of Biology, College of Science, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
| | - Ken Smith
- The University of Arizona, The Department of Environmental Science, Shantz Building Rm 4291177 E 4th St.Tucson, AZ 85721, USA
| | - Jörg Rinklebe
- University of Wuppertal, School of Architecture and Civil Engineering, Laboratory of Soil and Groundwater Management, Institute of Foundation Engineering, Water- and Waste-Management, Pauluskirchstraße 7, 42285 Wuppertal, Germany
| | - Zengqiang Zhang
- College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, China; Key Lab of Urban Environmental Processes and Pollution Control, Ningbo Urban Environment Observatory and Monitoring Station, Chinese Academy of Sciences, Ningbo 315830, China
| | - Ronghua Li
- College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, China; Key Lab of Urban Environmental Processes and Pollution Control, Ningbo Urban Environment Observatory and Monitoring Station, Chinese Academy of Sciences, Ningbo 315830, China.
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In Situ Synthesis of Zero-Valent Iron-Decorated Lignite Carbon for Aqueous Heavy Metal Remediation. Processes (Basel) 2022. [DOI: 10.3390/pr10081659] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Lignite’s large abundance, physicochemical properties and low cost are attractive for industrial wastewater remediation. However, directly applying lignite for wastewater treatment suffers low efficiency. Here, we synthesize highly efficient zero-valent iron (ZVI)-decorated lignite carbon through the in-situ carbonization of a lignite and FeCl2 mixture for heavy metal removal. The effect of carbonization temperature on the morphology, structure and crystallite phases of ZVI-decorated lignite carbons (ZVI-LXs) was investigated. At an optimized temperature (i.e., 1000 °C), ZVI particles were found evenly distributed on the lignite matrix with the particles between 20 to 190 nm. Moreover, ZVI particles were protected by a graphene shell that was formed in situ during the carbonization. The synthesized ZVI-L1000 exhibited higher Cu2+, Pb2+ and Cd2+ stripping capacities than pristine lignite in a wide pH range of 2.2–6.3 due to the surface-deposited ZVI particles. The maximum Langmuir adsorption capacities of ZVI-L1000 for Cd2+, Pb2+ and Cu2+ were 38.3, 55.2 and 42.5 mg/g at 25 °C, respectively, which were 7.8, 4.5 and 10.6 times greater than that of pristine lignite, respectively. ZVI-L1000 also exhibited a fast metal removal speed (~15 min), which is ideal for industrial wastewater treatment. The pseudo-second-order model fits well with all three adsorptions, indicating that chemical forces control their rate-limiting adsorption steps. The reduction mechanisms of ZVI-L1000 for heavy metals include reduction, precipitation and complexation.
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Adsorption Characteristics and Mechanisms of Fe-Mn Oxide Modified Biochar for Pb(II) in Wastewater. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:ijerph19148420. [PMID: 35886272 PMCID: PMC9316531 DOI: 10.3390/ijerph19148420] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Revised: 07/02/2022] [Accepted: 07/04/2022] [Indexed: 12/10/2022]
Abstract
This study prepared iron-manganese oxide-modified biochar (FM-BC) by impregnating rice straw biochar (BC) with a mixed solution of ferric nitrate and potassium permanganate. The effects of pH, FM-BC dosage, interference of coexisting ions, adsorption time, incipient Pb(II) concentration, and temperature on the adsorption of Pb(II) by FM-BC were investigated. Moreover, the Pb(II) adsorption mechanism of FM-BC was analyzed using a series of characterization techniques. The results showed that the Fe-Mn oxide composite modification significantly promoted the physical and chemical functions of the biochar surface and the adsorption capacity of Pb(II). The specific surface area of FM-BC was 18.20 times larger than that of BC, and the maximum Pb(II) adsorption capacity reached 165.88 mg/g. Adsorption kinetic tests showed that the adsorption of Pb(II) by FM-BC was based on the pseudo-second-order kinetic model, which indicated that the adsorption process was mainly governed by chemical adsorption. The isothermal adsorption of Pb(II) by FM-BC conformed to the Langmuir model, indicating that the adsorption process was spontaneous and endothermic. Characterization analyses (Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy) showed that the adsorption mechanism of Pb(II) by FM-BC was mainly via electrostatic adsorption, chemical precipitation, complexation, ion exchange, and the transformation of Mn2O3 into MnO2. Therefore, FM-BC is a promising adsorbent for Pb(II) removal from wastewater.
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Lei X, Wang Z, Qi J, Wang X, Chen Y, Li B, Zhou Y. Preparation of Iron Carbon Composite Material by Extracting Iron from Bauxite Residue and Its Adsorption of Heavy Metal Cd(II). BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2022; 109:110-121. [PMID: 35680738 DOI: 10.1007/s00128-022-03539-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: 12/21/2021] [Accepted: 04/20/2022] [Indexed: 06/15/2023]
Abstract
An effective method of iron extraction from bauxite residue was explored, and iron was used to prepare iron carbon composite material, which have a good adsorption effect on the heavy metal cadmium. After acid washing, acid leaching, Fe(III) reduction and ferrous oxalate decomposition, FeSO4·H2O(RM) was successfully extracted from bauxite residue, and the iron loss was only 4.35%. FexOy-BC(RM) nanocomposite materials were prepared by loading FeSO4·H2O(RM) onto walnut shell biochar (BC) (a kind of agricultural and forestry waste) by an in situ reduction and oxidation method. The results showed that the adsorption effect of FexOy-BC(RM) on Cd(II) was better than that of commercial FexOy-BC. XPS, TEM, SEM characterization analysis showed that FexOy-BC(RM) immobilized Cd(II) by adsorption, complexation, etc.to achieve a highly efficient adsorption of heavy metal Cd(II) in wastewater.
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Affiliation(s)
- Xiaoli Lei
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, 650500, China
| | - Zixuan Wang
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, 650500, China
| | - Jiamin Qi
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, 650500, China
| | - Xingyuan Wang
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, 650500, China
| | - Yubao Chen
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, 650500, China
| | - Bin Li
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, 650500, China.
| | - Yue Zhou
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, 650500, China.
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Xiao L, Lu H, Li J, Kong Q, Lan Y, Wang D. Preparation of biochar from constructed wetland plant and its adsorption performance towards Cu 2. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:47109-47122. [PMID: 35175522 DOI: 10.1007/s11356-022-18608-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2021] [Accepted: 01/06/2022] [Indexed: 06/14/2023]
Abstract
In order to solve problems in the treatment and disposal of huge production of artificial wetland plants and heavy metal pollution, two constructed wetland plants of reed and gladiolus were selected as raw materials to prepare biochar for adsorbing heavy metals from aqueous solutions. The experimental results showed that reed biochar prepared at 600℃ and activated by KOH with an impregnation ratio of 1:3 (KRAC-3) exhibited relatively high adsorption ability towards Cu2+. The optimal results analyzed by Design-Expert software showed that the maximum adsorption rate of KRAC-3 towards Cu2+ was obtained under the optimal conditions of adsorbent dosage of 1.2 g/L, pH of 4.96, and reaction time of 137.43 min. The adsorption of Cu2+ followed pseudo-second-order kinetics and the Langmuir adsorption model. The theoretical maximum adsorption capacity of KRAC-3 calculated from the Langmuir isotherm model was 148.08 mg/g. Microscopic tests with the help of SEM, EDS, and XRD revealed that physical adsorption, ion exchange, electrostatic adsorption, surface complexation, and precipitation were the main adsorption mechanism of Cu2+ loading onto KRAC-3. This study will provide a theoretical basis for the application of biochar prepared from constructed wetland plants and the treatment of heavy metal-containing wastewater.
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Affiliation(s)
- Liping Xiao
- School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao, 266520, People's Republic of China.
| | - Hongbin Lu
- National Engineering Laboratory for Lake Pollution Control and Ecological Restoration, State Environmental Protection Scientific Observation and Research Station for Lake Dongtinghu (SEPSORSLD), State Environmental Protection Key Laboratory for Lake Pollution Control, State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, People's Republic of China
| | - Jiaxin Li
- School of Civil Engineering, Liaoning Technical University, Fuxin, 123000, People's Republic of China
| | - Qiaoping Kong
- School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao, 266520, People's Republic of China
| | - Yunlong Lan
- School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao, 266520, People's Republic of China
| | - Dongxue Wang
- School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao, 266520, People's Republic of China
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N.Al-Rimawi L, Al-Jabari MH, Sulaiman SM, Nazal MK, Idrees AS. Pencil graphite synergistic improvement of zero-valent iron composite for the removal of diclofenac sodium in aqueous solutions: Kinetics and comparative study. ADV POWDER TECHNOL 2022. [DOI: 10.1016/j.apt.2022.103610] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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Abstract
Nitrate is a widespread water contaminant that can pose environmental and health risks. Various conventional techniques can be applied for the removal of nitrate from water and wastewater, such as biological denitrification, ion exchange, nanofiltration, and reverse osmosis. Compared to traditional methods, the chemical denitrification through zero-valent metals offers various advantages, such as lower costs, simplicity of management, and high efficiencies. The most utilized material for chemical denitrification is zero-valent iron (ZVI). Aluminium (ZVA), magnesium (ZVM), copper (ZVC), and zinc (ZVZ) are alternative zero-valent metals that are studied for the removal of nitrate from water as well as from aqueous solutions. To the best of our knowledge, a comprehensive work on the use of the various zero-valent materials that are employed for the removal of nitrate is still missing. Therefore, in the present review, the most recent papers concerning the use of zero-valent materials for chemical denitrification were analysed. The studies that dealt with zero-valent iron were discussed by considering microscopic (mZVI) and nanoscopic (nZVI) forms. For each Fe0 form, the effects of the initial pH, the presence or absence of dissolved oxygen, the initial nitrate concentration, the temperature, and the dissolved ions on the nitrate removal process were separately evaluated. Finally, the different materials that were employed as support for the nanoparticles were examined. For the other zero-valent metals tested, a detailed description of the works present in the literature was carried out. A comparison of the various features that are related to each considered material was also made.
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Liang W, Wang G, Peng C, Tan J, Wan J, Sun P, Li Q, Ji X, Zhang Q, Wu Y, Zhang W. Recent advances of carbon-based nano zero valent iron for heavy metals remediation in soil and water: A critical review. JOURNAL OF HAZARDOUS MATERIALS 2022; 426:127993. [PMID: 34920223 DOI: 10.1016/j.jhazmat.2021.127993] [Citation(s) in RCA: 65] [Impact Index Per Article: 21.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Revised: 11/30/2021] [Accepted: 12/02/2021] [Indexed: 06/14/2023]
Abstract
Heavy metal pollution in soil and water has presented a new challenge for the environmental remediation technology. Nano zero valent iron (nZVI) has excellent adsorbent properties for heavy metals, and thus, exhibits great potential in environmental remediation. Used as supporting materials for nZVI, carbon-based materials, such as activated carbon (AC), biochar (BC), carbon nanotubes (CNTs), and graphene (GNs) with aromatic rings formed by carbon atoms as the skeleton, have a large specific surface area and porous structure. This paper provides a comprehensive review on the advancement of carbon-based nano zero valent iron (C-nZVI) particles for heavy metal remediation in soil and water. First, different types of carbon-based materials and their combination with nZVI, as well as the synthesis methods and common characterization techniques of C-nZVI, are reviewed. Second, the mechanisms for the interactions between contaminants and C-nZVI, including adsorption, reduction, and oxidation reactions are detailed. Third, the environmental factors affecting the remediation efficiency, such as pH, coexisting constituents, oxygen, contact time, and temperature, are highlighted. Finally, perspectives on the challenges for utilization of C-nZVI in the actual contaminated soil and water and on the long-term efficacy and safety evaluation of C-nZVI have been proposed for further development.
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Affiliation(s)
- Weiyu Liang
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of Resource and Environmental Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Gehui Wang
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of Resource and Environmental Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Cheng Peng
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of Resource and Environmental Engineering, East China University of Science and Technology, Shanghai 200237, China; Shanghai Academy of Environmental Sciences, Shanghai 200233, China.
| | - Jiaqi Tan
- Department of Biological Sciences, Louisiana State University, Baton Rouge, LA 70803, USA
| | - Jiang Wan
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of Resource and Environmental Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Pengfei Sun
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, 71 East Beijing Road, Nanjing 210008, China
| | - Qiannan Li
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of Resource and Environmental Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Xiaowen Ji
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of Resource and Environmental Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Qi Zhang
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of Resource and Environmental Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Yonghong Wu
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, 71 East Beijing Road, Nanjing 210008, China
| | - Wei Zhang
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of Resource and Environmental Engineering, East China University of Science and Technology, Shanghai 200237, China; Shanghai Academy of Environmental Sciences, Shanghai 200233, China.
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Berslin D, Reshmi A, Sivaprakash B, Rajamohan N, Kumar PS. Remediation of emerging metal pollutants using environment friendly biochar- Review on applications and mechanism. CHEMOSPHERE 2022; 290:133384. [PMID: 34952021 DOI: 10.1016/j.chemosphere.2021.133384] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Revised: 12/09/2021] [Accepted: 12/18/2021] [Indexed: 06/14/2023]
Abstract
Bioremediation of heavy metals has become a major environmental concern due to their bio resistant nature and tendency to accumulate. Application of various technologies, involving physical and chemical working principles are applied and passive uptake using sorption involving eco-friendly substrates gained significant attention. Biochar, a cheaper and efficient material, offers good potential due to the greater ease of production, treatment and disposal. This review focuses on the effective application of biochar to treat water contaminated by three specific heavy metals: chromium, lead and arsenic. The on-field applications like soil amendment, industrial wastewater treatment and groundwater treatment using biochar are highlighted. The review article describes the feedstock available for biochar production, various production processes and the importance of optimum conditions like pyrolysis temperature, rate and retention time for various feedstocks reported in literature. The energy requirement of the production process can be supplied by its own energy output. Various modifications that are suitable for the biochar from distinct feedstocks are also discussed. The removal performance of biochar at different working conditions like pH, initial concentration of pollutant and adsorbent dose are consolidated. The highest removal efficiencies reported were by coconut shell biochar (Cr - 99.9%), canola straw biochar (Pb - 100%) and perilla leaf biochar (As - 100%). The adsorption mechanism is explained with reference to kinetics, isotherms, and molecular dynamics. Adsorption mechanism of most of the biochars was found to fit either Freundlich or Langmuir isotherm.
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Affiliation(s)
- Don Berslin
- Department of Chemical Engineering, Annamalai University, Annamalai Nagar, PC-608002, India
| | - Angelin Reshmi
- Department of Chemical Engineering, Annamalai University, Annamalai Nagar, PC-608002, India
| | - Baskaran Sivaprakash
- Department of Chemical Engineering, Annamalai University, Annamalai Nagar, PC-608002, India
| | - Natarajan Rajamohan
- Chemical Engineering Section, Faculty of Engineering, Sohar University, Sohar, PC-311, Oman.
| | - P Senthil Kumar
- Centre of Excellence in Water Research (CEWAR), Sri Sivasubramaniya Nadar College of Engineering, Chennai, 603 110, India
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Iron amended gravity-driven membrane (IGDM) system for heavy-metal-containing groundwater treatment. J Memb Sci 2022. [DOI: 10.1016/j.memsci.2021.120067] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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33
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Lan LM, Liu BN, Li WX, Bu H, Hu T, Hu HJ, Li Y, Jiang GB. Facilely recoverable Pb(II) adsorbent based on greigite (Fe 3S 4) loaded alginate aerogel with high adsorption efficiency. CHEMOSPHERE 2022; 290:133264. [PMID: 34902389 DOI: 10.1016/j.chemosphere.2021.133264] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Revised: 11/25/2021] [Accepted: 12/10/2021] [Indexed: 06/14/2023]
Affiliation(s)
- Ling-Min Lan
- Key Laboratory for Biobased Materials and Energy of Ministry of Education, College of Materials and Energy, South China Agricultural University, Guangzhou, 510642, China
| | - Bu-Ning Liu
- Key Laboratory for Biobased Materials and Energy of Ministry of Education, College of Materials and Energy, South China Agricultural University, Guangzhou, 510642, China
| | - Wei-Xiong Li
- Key Laboratory for Biobased Materials and Energy of Ministry of Education, College of Materials and Energy, South China Agricultural University, Guangzhou, 510642, China
| | - Huaitian Bu
- Department of Materials and Nanotechnology, SINTEF Industry, Forskningsveien 1, 0373, Oslo, Norway
| | - Tian Hu
- Key Laboratory for Biobased Materials and Energy of Ministry of Education, College of Materials and Energy, South China Agricultural University, Guangzhou, 510642, China
| | - Han-Jian Hu
- Key Laboratory for Biobased Materials and Energy of Ministry of Education, College of Materials and Energy, South China Agricultural University, Guangzhou, 510642, China
| | - Yongtao Li
- College of Natural Resources and Environment, South China Agricultural University, Guangzhou, 510642, China; College of Resource and Environmental Engineering, Jiangxi University of Science and Technology, Ganzhou, 341000, China.
| | - Gang-Biao Jiang
- Key Laboratory for Biobased Materials and Energy of Ministry of Education, College of Materials and Energy, South China Agricultural University, Guangzhou, 510642, China.
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Ni J, Jia Y, Jiang YP, Zhang RJ, Fang F, Zhang YX. Alkali-free synthesis of hexagonal star-like Fe-ethylene glycol (Fe-EG) complex and subsequently decomposition to α-Fe2O3 and Fe3O4/α-Fe/C composites. Chem Phys 2022. [DOI: 10.1016/j.chemphys.2021.111429] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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35
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Wang R, Hu QH, Wang QY, Xiang YL, Huang SH, Liu YZ, Li SY, Chen QL, Zhou QH. Efficiently selective removal of Pb(II) by magnetic ion-imprinted membrane based on polyacrylonitrile electro-spun nanofibers. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2021.120280] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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36
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Sun Y, Wang T, Han C, Lv X, Bai L, Sun X, Zhang P. Facile synthesis of Fe-modified lignin-based biochar for ultra-fast adsorption of methylene blue: Selective adsorption and mechanism studies. BIORESOURCE TECHNOLOGY 2022; 344:126186. [PMID: 34710602 DOI: 10.1016/j.biortech.2021.126186] [Citation(s) in RCA: 58] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Revised: 10/16/2021] [Accepted: 10/19/2021] [Indexed: 06/13/2023]
Abstract
A novel Fe-modified lignin-based biochar (Fe-LB) was fabricated via a facile one-step carbonization method for methylene blue (MB) removal from wastewater. Fe-LB exhibited a high specific surface area (885.97 m2/g) and micropore volume (0.3203 m3/g), and demonstrated high affinity for MB with the maximum adsorption capacity of 2.7-fold by Fe-LB than LB. It was found that quick adsorption could be achieved in 15 min with the MB removal efficiency of 100% and adsorption capacity reached 200 mg/g. Selective adsorption studies indicated that Fe-LB preferentially adsorbed MB in high salt and multiple dye systems (binary, ternary, and quaternary) over a wide pH range from 2 to 12. The removal efficiency of CR was greatly improved due to the synergistic effect between MB and CR in the binary system. This work demonstrated that Fe-LB can effectively remove dye contaminants and possessed great potential in the treatment of MB polluted dye wastewater.
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Affiliation(s)
- Yongchang Sun
- Key Laboratory of Subsurface Hydrology and Ecological Effects in Arid Region, Ministry of Education, School of Water and Environment, Chang'an University, Xi'an 710054, China; Department of Environmental Engineering, School of Water and Environment, Chang'an University, Xi'an 710054, China.
| | - Tingting Wang
- Key Laboratory of Subsurface Hydrology and Ecological Effects in Arid Region, Ministry of Education, School of Water and Environment, Chang'an University, Xi'an 710054, China; Department of Environmental Engineering, School of Water and Environment, Chang'an University, Xi'an 710054, China
| | - Caohui Han
- Key Laboratory of Subsurface Hydrology and Ecological Effects in Arid Region, Ministry of Education, School of Water and Environment, Chang'an University, Xi'an 710054, China; Department of Environmental Engineering, School of Water and Environment, Chang'an University, Xi'an 710054, China
| | - Xintian Lv
- Key Laboratory of Subsurface Hydrology and Ecological Effects in Arid Region, Ministry of Education, School of Water and Environment, Chang'an University, Xi'an 710054, China; Department of Environmental Engineering, School of Water and Environment, Chang'an University, Xi'an 710054, China
| | - Lu Bai
- Key Laboratory of Subsurface Hydrology and Ecological Effects in Arid Region, Ministry of Education, School of Water and Environment, Chang'an University, Xi'an 710054, China; Department of Environmental Engineering, School of Water and Environment, Chang'an University, Xi'an 710054, China
| | - Xiaoyin Sun
- Key Laboratory of Subsurface Hydrology and Ecological Effects in Arid Region, Ministry of Education, School of Water and Environment, Chang'an University, Xi'an 710054, China; Department of Environmental Engineering, School of Water and Environment, Chang'an University, Xi'an 710054, China
| | - Pengfei Zhang
- School of Textile Science and Engineering, Xi'an Polytechnic University, Xi'an, 710048, China
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Jiang J, Zhang S, Li S, Zeng W, Li F, Wang W. Magnetized manganese-doped watermelon rind biochar as a novel low-cost catalyst for improving oxygen reduction reaction in microbial fuel cells. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 802:149989. [PMID: 34525720 DOI: 10.1016/j.scitotenv.2021.149989] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2021] [Revised: 08/24/2021] [Accepted: 08/24/2021] [Indexed: 06/13/2023]
Abstract
Microbial fuel cells (MFCs) are promising equipment for water treatment and power generation. The catalyst used in the oxygen reduction reaction (ORR) at the cathode is a critical factor for efficacy of MFCs. Therefore, it is important to develop cost-effective cathode catalysts to enhance application of MFCs. In the current study, a novel cathode catalyst was developed, which was annealed with watermelon rind as raw material and transition metals including iron, and manganese were introduced. The 700Mn/Fe@WRC catalyst, which was annealed at 700 °C, exhibited excellent electrochemical performance. The high relative content of pyridine nitrogen caused by the inherent nitrogen element of the watermelon rind and the high content of iron and manganese elements introduced resulted in increase in electrochemical surface area to 657.6 m2/g. The number of electrons transferred ORR was 3.96, indicating that ORR occurs through a four-electron pathway. The maximum power density of MFCs was 399.3 ± 7.4 mW/m2 with a fitting total internal resistance of 15.242 Ω, and the removal efficiency of COD was 97.1 ± 1.2%. The cost of the 700Mn/Fe@WRC catalyst was approximately 0.15 $/g, which is significantly lower compared with Pt/C (33.0 $/g). Experimental verification showed that the 700Mn/Fe@WRC prepared using the economical watermelon rind biochar (WRC) is an excellent substitute for non-precious metal catalysts used in MFCs.
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Affiliation(s)
- Jiwei Jiang
- Key Laboratory of Pollution Processes and Environmental Criteria at Ministry of Education, Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China
| | - Shixuan Zhang
- Key Laboratory of Pollution Processes and Environmental Criteria at Ministry of Education, Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China
| | - Shengnan Li
- Key Laboratory of Pollution Processes and Environmental Criteria at Ministry of Education, Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China
| | - Wenlu Zeng
- Key Laboratory of Pollution Processes and Environmental Criteria at Ministry of Education, Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China
| | - Fengxiang Li
- Key Laboratory of Pollution Processes and Environmental Criteria at Ministry of Education, Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China.
| | - Wei Wang
- Key Laboratory of Pollution Processes and Environmental Criteria at Ministry of Education, Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China
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38
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Ma L, Du Y, Chen S, Du D, Ye H, Zhang TC. Highly efficient removal of Cr(VI) from aqueous solution by pinecone biochar supported nanoscale zero-valent iron coupling with Shewanella oneidensis MR-1. CHEMOSPHERE 2022; 287:132184. [PMID: 34507148 DOI: 10.1016/j.chemosphere.2021.132184] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Revised: 08/29/2021] [Accepted: 09/04/2021] [Indexed: 06/13/2023]
Abstract
Nanoscale zero-valent iron (nZVI) has been extensively used to remove various pollutants. However, the rapid deactivation due to aggregation and surface passivation severely limits its practical application. In this study, a novel composite with nZVI supported by pinecone biochar (nZVI-PBC) was successfully synthesized and used for the removal of high concentration Cr(VI) from aqueous solution in the presence of Shewanella oneidensis MR-1 (MR-1). The results showed that the nZVI-PBC coupling with MR-1 (nZVI-PBC/MR-1) exhibited an excellent removal performance for high concentration Cr(VI) compared to the nZVI-PBC alone. Under optimal conditions, 100 mg/L Cr(VI) could be removed completely by nZVI-PBC/MR-1 within 48 h, while only 39.50% of Cr(VI) was removed by nZVI-PBC alone. The improvement of Cr(VI) removal is due to the dissolution of the surface passivation layer of nZVI-PBC, formation of sorbed Fe(II) in the presence of MR-1, and an important role of extracellular polymeric substance (EPS) derived from MR-1. X-ray photoelectron spectroscopy (XPS) and Cr K-edge X-ray absorption near-edge structure spectra (XANES) confirmed that most Cr(VI) was reduced to insoluble Cr(III) and formed Cr2O3, CrxFe1-x(OH)3 and FeCr2O4 precipitates, and a small amount of unreduced Cr(VI) was immobilized through adsorption and complexation. The results suggest that nZVI-PBC/MR-1 can effectively overcome the limitations of nZVI and achieve highly efficient removal of high concentration Cr(VI).
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Affiliation(s)
- Liying Ma
- Engineering Research Center for Heavy Metal Pollution Control of Hubei Province, College of Resources and Environmental Science, South-Central University for Nationalities, Wuhan, 430074, China
| | - Yaguang Du
- Engineering Research Center for Heavy Metal Pollution Control of Hubei Province, College of Resources and Environmental Science, South-Central University for Nationalities, Wuhan, 430074, China
| | - Shaohua Chen
- Engineering Research Center for Heavy Metal Pollution Control of Hubei Province, College of Resources and Environmental Science, South-Central University for Nationalities, Wuhan, 430074, China.
| | - Dongyun Du
- Engineering Research Center for Heavy Metal Pollution Control of Hubei Province, College of Resources and Environmental Science, South-Central University for Nationalities, Wuhan, 430074, China
| | - Hengpeng Ye
- Engineering Research Center for Heavy Metal Pollution Control of Hubei Province, College of Resources and Environmental Science, South-Central University for Nationalities, Wuhan, 430074, China
| | - Tian C Zhang
- Civil and Environmental Engineering Department, College of Engineering, University of Nebraska-Lincoln, Omaha, NE, 68182, USA
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39
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Wang P, Fu F, Liu T. A review of the new multifunctional nano zero-valent iron composites for wastewater treatment: Emergence, preparation, optimization and mechanism. CHEMOSPHERE 2021; 285:131435. [PMID: 34256206 DOI: 10.1016/j.chemosphere.2021.131435] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Revised: 06/30/2021] [Accepted: 07/02/2021] [Indexed: 06/13/2023]
Abstract
Nano zero-valent iron (NZVI) with high chemical reactivity and environmental friendliness had recently become one of the most efficient technologies for wastewater restoration. However, the unitary NZVI system had not met practical requirements for wastewater treatments. Expectantly, the development of NZVI would prefer multifunctional NZVI-based composites, which could be prepared and optimized by the combined methods and technologies. Consequently, a systematic and comprehensive summary from the perspective of multifunctional NZVI-composite had been conducted. The results demonstrated that the advantages of various systems were integrated by multifunctional NZVI-composite systems with a more significant performance of pollutant removal than those of the bare NZVI and its composites. Simultaneously, characteristics of the product prepared by the incorporation of numerous methods were superior to those by a simple method, resulting in the increase of the entirety efficiency. By comparison with other preparation methods, the ball milling method with higher production and field application potential was worthy of attention. After combining multiple technologies, the effect of NZVI and its composite systems could be dramatically strengthened. Preparation technology parameters and treatment effect of contaminants could be further optimized using more comprehensive experimental designs and mathematical models. The mechanism of the multifunctional NZVI system for contaminants treatment was primarily focused on adsorption, oxidation, reduction and co-precipitation. Multiple techniques were combined to enhance the dispersion, alleviating passivation, accelerating electron transfer efficiency or mass transfer action for optimizing the effect of NZVI composites.
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Affiliation(s)
- Peng Wang
- Tianjin Key Laboratory of Water Resources and Environment, Tianjin Normal University, 300387, Tianjin, PR China; School of Geography and Environmental Sciences, Tianjin Normal University, Tianjin, 300387, Tianjin, PR China
| | - Fugang Fu
- PowerChina Guiyang Engineering Corporation Limited, 300387, Guiyang, PR China
| | - Tingyi Liu
- Tianjin Key Laboratory of Water Resources and Environment, Tianjin Normal University, 300387, Tianjin, PR China.
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40
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Khan ZH, Gao M, Wu J, Bi R, Mehmood CT, Song Z. Mechanism of As(III) removal properties of biochar-supported molybdenum-disulfide/iron-oxide system. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 287:117600. [PMID: 34153605 DOI: 10.1016/j.envpol.2021.117600] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Revised: 05/17/2021] [Accepted: 06/13/2021] [Indexed: 06/13/2023]
Abstract
Sulfate (SO4•-) and hydroxyl-based (HO•) radical are considered potential agents for As(III) removal from aquatic environments. We have reported the synergistic role of SO4•- and HO• radicals for As(III) removal via facile synthesis of biochar-supported SO4•- species. MoS2-modified biochar (MoS2/BC), iron oxide-biochar (FeOx@BC), and MoS2-modified iron oxide-biochar (MoS2/FeOx@BC) were prepared and systematically characterized to understand the underlying mechanism for arsenic removal. The MoS2/FeOx@BC displayed much higher As(III) adsorption (27 mg/g) compared to MoS2/BC (7 mg/g) and FeOx@BC (12 mg/g). Effects of kinetics, As(III) concentration, temperature, and pH were also investigated. The adsorption of As(III) by MoS2/FeOx@BC followed the Freundlich adsorption isotherm and pseudo-second-order, indicating multilayer adsorption and chemisorption, respectively. The FTIR and XPS analysis confirmed the presence of Fe-O bonds and SO4 groups in the MoS2/FeOx@BC. Electron paramagnetic resonance (EPR) and radical quenching experiments have shown the generation of SO4•- radicals as predominant species in the presence of MoS2 and FeOx in MoS2/FeOx@BC via radical transfer from HO• to SO42-. The HO• and SO4•- radicals synergistically contributed to enhanced As(III) removal. It is envisaged that As(III) initially adsorbed through electrostatic interactions and partially undergoes oxidation, which is finally adsorbed to MoS2/FeOx@BC after being oxidized to As(V). The MoS2/FeOx@BC system could be considered a novel material for effective removal of As(III) from aqueous environments owing to its cost-effective synthesis and easy scalability for actual applications.
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Affiliation(s)
- Zulqarnain Haider Khan
- Department of Civil and Environmental Engineering, Shantou University, Shantou, 515063, China
| | - Minling Gao
- Department of Civil and Environmental Engineering, Shantou University, Shantou, 515063, China
| | - Jingjie Wu
- Department of Civil and Environmental Engineering, Shantou University, Shantou, 515063, China
| | - Ran Bi
- Marine Biology Institute, Shantou University, Shantou, 515063, China
| | - Ch Tahir Mehmood
- Department of Chemical Engineering, Guangdong Technion Isreal Institute of Technology, Shantou, 515063, China
| | - Zhengguo Song
- Department of Civil and Environmental Engineering, Shantou University, Shantou, 515063, China.
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41
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Highly efficient and bifunctional Cd(II)-Organic Framework platform towards Pb(II), Cr(VI) detection and Cr(VI) photoreduction. J SOLID STATE CHEM 2021. [DOI: 10.1016/j.jssc.2021.122416] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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42
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Jia G, Tang X, Xu J. Synthesis of hydrochar supported zero-valent iron composites through hydrothermal carbonization of granatum and zero-valent iron: potential applications for Pb 2+ removal. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2021; 84:1873-1884. [PMID: 34695016 DOI: 10.2166/wst.2021.366] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
In the present investigation, a one-step synthesis of hydrochar (HC) supported zero-valent iron (ZVI) was performed through hydrothermal carbonization (HTC) of granatum and ZVI. According to XRD, XPS, and FTIR data, ZVI was evenly distributed on the surface of the hydrochar. In addition, the external ZVI oxide layer and the functional groups present in the hydrochar remained on the surface of the HC/ZVI composites after HTC treatment. The surface area of the HC/ZVI composites was between 31.11 and 44.16 m2/g. These numbers were higher than those obtained for hydrochar (20.36 m2/g) and ZVI (12.14 m2/g) separately. The Pb2+ adsorption capacity of hydrochar and ZVI was 28.64 and 192.44 mg/g, respectively (25 °C, pH = 6.05, Pb2+ concentration of 200 mg/L with 0.05 g HC and 0.01 g ZVI). In addition, the adsorption capacity of the composites was between 49.63 and 88.09 mg/g. The data obtained for Pb2+ removal by the samples used in this experiments fitted well the pseudo-second-order kinetics and Langmuir isotherm models. Therefore, hydrochar may represent a promising supporting material for the synthesis of ZVI composites.
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Affiliation(s)
- Guangyin Jia
- College of City and Architecture Engineering, Zaozhuang University, Zaozhuang 277160, China E-mail:
| | - Xiangchao Tang
- The Beijing Prevention and Treatment Hospital of Occupational Disease for Chemical Industry, Beijing 100080, China
| | - Jie Xu
- College of City and Architecture Engineering, Zaozhuang University, Zaozhuang 277160, China E-mail:
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43
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Li J, Liu Y, Ren X, Dong W, Chen H, Cai T, Zeng W, Li W, Tang L. Soybean residue based biochar prepared by ball milling assisted alkali activation to activate peroxydisulfate for the degradation of tetracycline. J Colloid Interface Sci 2021; 599:631-641. [PMID: 33979745 DOI: 10.1016/j.jcis.2021.04.074] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Revised: 04/13/2021] [Accepted: 04/15/2021] [Indexed: 12/23/2022]
Abstract
The advanced oxidation process (AOPs) has caused great concern in recent years. Among them, biochar has been widely studied as a catalyst for advanced oxidation process because of its low price and low environmental risk. In this study, a novel ball milling assisted KOH activation biochar (MKBC) was prepared and applied in peroxydisulfate (PDS) activation to degrade tetracycline hydrochloride (TC-H). In comparison with the oxidation (3.48%) by PDS alone and adsorption (36.19%) by MKBC alone, the removal rate of TC-H was increased to 84.15% in the MKBC/PDS system, indicating that MKBC can successfully activate PDS. Besides, the catalytic activity of the MKBC to activate PDS for the degradation of TC-H is 58.33% higher than that of pristine biochar (PBC). In addition, MKBC has outstanding stability that after three repeated experiments, the removal rate of TC-H by the MKBC/PDS system still remains 77.35%. Meanwhile, the mechanism was investigated that the singlet oxygen (1O2) seized the principal position in the degradation of TC-H in the PDS/MKBC system. This study explored a novel, solvent-free and economic method to propose this extraordinary biochar, which provided a new strategy for the future research of biochar.
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Affiliation(s)
- Juan Li
- College of Environmental Science and Engineering, Hunan University, Lushan South Road, Yuelu District, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Lushan South Road, Yuelu District, Changsha 410082, PR China
| | - Yutang Liu
- College of Environmental Science and Engineering, Hunan University, Lushan South Road, Yuelu District, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Lushan South Road, Yuelu District, Changsha 410082, PR China.
| | - Xiaoya Ren
- College of Environmental Science and Engineering, Hunan University, Lushan South Road, Yuelu District, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Lushan South Road, Yuelu District, Changsha 410082, PR China
| | - Wanyue Dong
- College of Environmental Science and Engineering, Hunan University, Lushan South Road, Yuelu District, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Lushan South Road, Yuelu District, Changsha 410082, PR China
| | - Hui Chen
- College of Environmental Science and Engineering, Hunan University, Lushan South Road, Yuelu District, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Lushan South Road, Yuelu District, Changsha 410082, PR China
| | - Tao Cai
- School of Resource & Environment and Safety Engineering, University of South China, Hengyang 421001, PR China
| | - Wengao Zeng
- International Research Center for Renewable Energy, State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Xi'an 710049, PR China
| | - Wenlu Li
- College of Environmental Science and Engineering, Hunan University, Lushan South Road, Yuelu District, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Lushan South Road, Yuelu District, Changsha 410082, PR China
| | - Lin Tang
- College of Environmental Science and Engineering, Hunan University, Lushan South Road, Yuelu District, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Lushan South Road, Yuelu District, Changsha 410082, PR China.
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44
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Xu M, Li Q, Xiang Y, Yuan S, Wu Y, Zhang J, Liu J, Zhu X, Zhang Y. H 2O 2 self-providing synergistic chemodynamic/photothermal therapy using graphene oxide supported zero valence iron nanoparticles. RSC Adv 2021; 11:28973-28987. [PMID: 35478576 PMCID: PMC9038183 DOI: 10.1039/d1ra04528h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2021] [Accepted: 07/26/2021] [Indexed: 12/12/2022] Open
Abstract
Chemodynamic therapy (CDT) represents an emerging modality that treats cancer and other malignant diseases by using Fenton or Fenton-like catalysts to decompose hydrogen peroxide (H2O2) into toxic hydroxyl radicals (·OH). Despite its great promise, chemodynamic therapy is still limited by low endogenous H2O2 levels and lack of highly efficient nanocatalysts. In this study, we have developed multi-functional therapeutic nanocomposites GO–ZVI–GOx (GO = graphene oxide, ZVI = zero valence iron nanoparticles and GOx = glucose oxidase), where the GOx can catalyze the intracellular glucose and self-produce H2O2 for enhanced CDT therapy, and the GO is used as a template to avoid the aggregation of ZVI nanoparticles and also as an excellent photo-thermal converter for photothermal therapy under near-infrared (NIR) light. Our results show that this H2O2 self-generating nanoplatform can produce substantial amounts of reactive radicals under 808 nm NIR light due to the combinational effect of dual chemodynamic and photothermal therapy, which eventually leads to a significant decrease in cancer cell viability. It is believed that the methodology developed in this study enables conventional chemodynamic therapy to be efficiently improved, and holds great potential for overcoming challenges in many other H2O2-dependent cancer therapies. A H2O2 self-providing therapeutic nanoplatform is reported to achieve enhanced chemodynamic/photothermal therapy.![]()
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Affiliation(s)
- Miao Xu
- School of Environmental and Chemical Engineering, Shanghai University Shanghai 200444 China
| | - Qin Li
- School of Environmental and Chemical Engineering, Shanghai University Shanghai 200444 China
| | - Yi Xiang
- School of Environmental and Chemical Engineering, Shanghai University Shanghai 200444 China
| | - Shanshan Yuan
- School of Environmental and Chemical Engineering, Shanghai University Shanghai 200444 China
| | - Yihan Wu
- School of Environmental and Chemical Engineering, Shanghai University Shanghai 200444 China
| | - Jing Zhang
- School of Environmental and Chemical Engineering, Shanghai University Shanghai 200444 China
| | - Jinliang Liu
- School of Environmental and Chemical Engineering, Shanghai University Shanghai 200444 China
| | - Xiaohui Zhu
- School of Environmental and Chemical Engineering, Shanghai University Shanghai 200444 China
| | - Yong Zhang
- School of Environmental and Chemical Engineering, Shanghai University Shanghai 200444 China .,Department of Biomedical Engineering, Faculty of Engineering, National University of Singapore 117583 Singapore
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45
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Xu H, Gao M, Hu X, Chen Y, Li Y, Xu X, Zhang R, Yang X, Tang C, Hu X. A novel preparation of S-nZVI and its high efficient removal of Cr(VI) in aqueous solution. JOURNAL OF HAZARDOUS MATERIALS 2021; 416:125924. [PMID: 34492856 DOI: 10.1016/j.jhazmat.2021.125924] [Citation(s) in RCA: 52] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Revised: 04/15/2021] [Accepted: 04/16/2021] [Indexed: 06/13/2023]
Abstract
The chitosan-stabilized biochar supported S-nZVI (CS@BC/S-nZVI) composite with low aggregation and superior antioxidation were successfully synthesized by liquid-phase reduction method for the outstanding removal of Cr(VI) from wastewater and characterized by SEM, BET, FTIR, XRD, and XPS. The optimized synthesis parameters of CS@BC/S-nZVI were determined as a 0.14 molar ratio of S/Fe and a 0.25 mass ratio of BC/Fe. The CS@BC/S-nZVI possessed a specific surface area of 199.246 m2/g and an average pore size and pore volume of 1.186 nm and 0.272 cc/g. The CS@BC/S-nZVI could remain reductive activity after Cr(VI) removal and present a remarkable tolerance to the coexisting ions during Cr(VI) removal. The adsorption data were fitted well by the pseudo-second order model and the Langmuir model. The removal of Cr(VI) by CS@BC/S-nZVI was an exothermic process with prominent Cr(VI) removal capacities of 244.07 mg/g at 120 min and 221.84 mg/g at 15 min at 25 ℃. Further mechanism analysis proved that the binding of Cr(VI) to CS@BC/S-nZVI was mainly a synergistic effect of reduction and electrostatic attraction. Overall, these findings shed new light on the research of a novel S-nZVI compound and revealed the potential practical application of CS@BC/S-nZVI in the future heavy metal removal from wastewater.
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Affiliation(s)
- Hao Xu
- College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China
| | - Mengxi Gao
- College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China
| | - Xi Hu
- College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China
| | - Yonghua Chen
- College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China
| | - Yan Li
- College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China
| | - Xinyu Xu
- College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China
| | - Riqing Zhang
- College of Forestry, Central South University of Forestry and Technology, Changsha 410004, China
| | - Xiong Yang
- College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China
| | - Chunfang Tang
- College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China.
| | - Xinjiang Hu
- College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China.
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Hou R, Wang L, Shen Z, Alessi DS, Hou D. Simultaneous reduction and immobilization of Cr(VI) in seasonally frozen areas: Remediation mechanisms and the role of ageing. JOURNAL OF HAZARDOUS MATERIALS 2021; 415:125650. [PMID: 34088176 DOI: 10.1016/j.jhazmat.2021.125650] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/24/2020] [Revised: 03/05/2021] [Accepted: 03/10/2021] [Indexed: 06/12/2023]
Abstract
Among the toxic metals, hexavalent chromium [Cr(VI)] has attracted much attention due to its high mobility and toxicity, rendering considerable challenges for long-term remediation. In this study, the soil was collected from a dichromate contaminated industrial site in Liaoning Province, a seasonally frozen area in northern China, and subjected to frequent freeze-thaw cycles. Three additives, including (i) ferrous sulfate; (ii) calcium polysulfide; and (iii) combined biochar and calcium polysulfide were applied to reduce and immobilize Cr(VI) in the soils. The samples underwent 28 days of incubation followed by 16 freeze-thaw cycles. The toxicity characteristic leaching procedure (TCLP) and simulated acid rain leaching were adopted to test the remediation performances. It was observed that all three treatments can significantly reduce and immobilize Cr(VI) after short-term incubation, while biochar with abundant functional groups could adsorb and reduce Cr(VI) effectively. Notably, the concentration of Cr(VI) in TCLP leachates after incubation in combined treatment decreased by 67.87% and 37.27%, respectively, compared with the application of ferrous sulfate or calcium polysulfide alone. Freeze-thaw cycles induced the disintegration of soil particles and increased the risk of contaminant mobilization. Conversely, biochar particles has become finer and even produced nanoparticles with ageing, accompanied by the increase in oxygen-containing surface functional groups. Additionally, the specific surface area increased with the pyrolysis of biochar, which further enhanced the retention of soil colloidal particles and suppressed the migration of contaminants. Therefore, the cumulative release of Cr(VI) in the combined treatment (i.e., 10.97 ~ 32.97 mg/kg) was much lower than that of the other two treatments after freeze-thaw ageing. Overall, the combination of biochar and calcium polysulfide displayed advantages in the reduction and immobilization of Cr(VI), and offered a long-term, effective strategy for the remediation of Cr(VI) contaminated soils in cold regions.
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Affiliation(s)
- Renjie Hou
- School of Environment, Tsinghua University, Beijing 100084, China
| | - Liuwei Wang
- School of Environment, Tsinghua University, Beijing 100084, China
| | - Zhengtao Shen
- School of Environment, Tsinghua University, Beijing 100084, China
| | - Daniel S Alessi
- Department of Earth and Atmospheric Sciences, University of Alberta, Edmonton T6G 2E3, Canada
| | - Deyi Hou
- School of Environment, Tsinghua University, Beijing 100084, China.
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Sui L, Tang C, Du Q, Zhao Y, Cheng K, Yang F. Preparation and characterization of boron-doped corn straw biochar: Fe (Ⅱ) removal equilibrium and kinetics. J Environ Sci (China) 2021; 106:116-123. [PMID: 34210427 DOI: 10.1016/j.jes.2021.01.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2020] [Revised: 12/29/2020] [Accepted: 01/03/2021] [Indexed: 06/13/2023]
Abstract
Nowadays, iron ions as a ubiquitous heavy metal pollutant are gradually concerned and the convenient and quick removal of excessive iron ions in groundwater has become a major challenge for the safety of drinking water. In this study, boron-doped biochar (B-BC) was successfully prepared at various preparation conditions with the addition of boric acid. The as-prepared material has a more developed pore structure and a larger specific surface area (up to 897.97 m²/g). A series of characterization results shows that boric acid effectively activates biochar, and boron atoms are successfully doped on biochar. Compared with the ratio of raw materials, the pyrolysis temperature has a greater influence on the amount of boron doping. Based on Langmuir model, the maximum adsorption capacity of 800B-BC1:2 at 25 °C, 40 °C, 55 °C are 50.02 mg/g, 95.09 mg/g, 132.78 mg/g, respectively. Pseudo-second-order kinetic model can better describe the adsorption process, the adsorption process is mainly chemical adsorption. Chemical complexation, ions exchange, and co-precipitation may be the main mechanisms for Fe2+ removal.
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Affiliation(s)
- Long Sui
- Joint laboratory of Northeast Agricultural University and Max Planck Institute of Colloids and Interfaces (NEAU-MPICI), Harbin 150030, China; School of Water Conservancy and Civil Engineering, Northeast Agricultural University, Harbin 150030, China
| | - Chunyu Tang
- Joint laboratory of Northeast Agricultural University and Max Planck Institute of Colloids and Interfaces (NEAU-MPICI), Harbin 150030, China; School of Water Conservancy and Civil Engineering, Northeast Agricultural University, Harbin 150030, China
| | - Qing Du
- Joint laboratory of Northeast Agricultural University and Max Planck Institute of Colloids and Interfaces (NEAU-MPICI), Harbin 150030, China; School of Water Conservancy and Civil Engineering, Northeast Agricultural University, Harbin 150030, China
| | - Ying Zhao
- Joint laboratory of Northeast Agricultural University and Max Planck Institute of Colloids and Interfaces (NEAU-MPICI), Harbin 150030, China; School of Water Conservancy and Civil Engineering, Northeast Agricultural University, Harbin 150030, China
| | - Kui Cheng
- Joint laboratory of Northeast Agricultural University and Max Planck Institute of Colloids and Interfaces (NEAU-MPICI), Harbin 150030, China; College of Engineering, Northeast Agricultural University, Harbin 150030, China.
| | - Fan Yang
- Joint laboratory of Northeast Agricultural University and Max Planck Institute of Colloids and Interfaces (NEAU-MPICI), Harbin 150030, China; School of Water Conservancy and Civil Engineering, Northeast Agricultural University, Harbin 150030, China.
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Zhuang M, Shi W, Wang H, Cui L, Quan G, Yan J. Carbothermal Synthesis of Ni/Fe Bimetallic Nanoparticles Embedded into Graphitized Carbon for Efficient Removal of Chlorophenol. NANOMATERIALS 2021; 11:nano11061417. [PMID: 34072183 PMCID: PMC8226776 DOI: 10.3390/nano11061417] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Revised: 05/02/2021] [Accepted: 05/25/2021] [Indexed: 12/04/2022]
Abstract
The reactivity of nanoscale zero-valent iron is limited by surface passivation and particle agglomeration. Here, Ni/Fe bimetallic nanoparticles embedded into graphitized carbon (NiFe@GC) were prepared from Ni/Fe bimetallic complex through a carbothermal reduction treatment. The Ni/Fe nanoparticles were uniformly distributed in the GC matrix with controllable particle sizes, and NiFe@GC exhibited a larger specific surface area than unsupported nanoscale zero-valent iron/nickel (FeNi NPs). The XRD results revealed that Ni/Fe bimetallic nanoparticles embedded into graphitized carbon were protected from oxidization. The NiFe@GC performed excellently in 2,4,6-trichlorophenol (TCP) removal from an aqueous solution. The removal efficiency of TCP for NiFe@GC-50 was more than twice that of FeNi nanoparticles, and the removal efficiency of TCP increased from 78.5% to 94.1% when the Ni/Fe molar ratio increased from 0 to 50%. The removal efficiency of TCP by NiFe@GC-50 can maintain 76.8% after 10 days of aging, much higher than that of FeNi NPs (29.6%). The higher performance of NiFe@GC should be ascribed to the significant synergistic effect of the combination of NiFe bimetallic nanoparticles and GC. In the presence of Ni, atomic H* generated by zero-valent iron corrosion can accelerate TCP removal. The GC coated on the surface of Ni/Fe bimetallic nanoparticles can protect them from oxidation and deactivation.
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Affiliation(s)
- Min Zhuang
- School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China;
- School of Environmental Science and Engineering, Yancheng Institute of Technology, Yancheng 224051, China; (W.S.); (L.C.); (G.Q.)
| | - Wen Shi
- School of Environmental Science and Engineering, Yancheng Institute of Technology, Yancheng 224051, China; (W.S.); (L.C.); (G.Q.)
| | - Hui Wang
- School of Environmental Science and Engineering, Yancheng Institute of Technology, Yancheng 224051, China; (W.S.); (L.C.); (G.Q.)
- Correspondence: (H.W.); (J.Y.)
| | - Liqiang Cui
- School of Environmental Science and Engineering, Yancheng Institute of Technology, Yancheng 224051, China; (W.S.); (L.C.); (G.Q.)
| | - Guixiang Quan
- School of Environmental Science and Engineering, Yancheng Institute of Technology, Yancheng 224051, China; (W.S.); (L.C.); (G.Q.)
| | - Jinlong Yan
- School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China;
- School of Environmental Science and Engineering, Yancheng Institute of Technology, Yancheng 224051, China; (W.S.); (L.C.); (G.Q.)
- Correspondence: (H.W.); (J.Y.)
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Su C, Tao AF, Zhao L, Wang P, Wang A, Huang X, Chen M. Roles of modified biochar in the performance, sludge characteristics, and microbial community features of anaerobic reactor for treatment food waste. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 770:144668. [PMID: 33513502 DOI: 10.1016/j.scitotenv.2020.144668] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2020] [Revised: 11/16/2020] [Accepted: 12/17/2020] [Indexed: 06/12/2023]
Abstract
Anaerobic digestion (AD) is a green technology widely applied to food waste treatment. Although the AD has high efficiency, instability often occurs. The main purpose of the study is to understand the mechanism of modified biochar improving AD performance. The effects of different modified biochar on the efficiency and microecology of an anaerobic reactor treating food waste were investigated. Bagasse biochar was used as the substrate to explore the effects of iron-modified (A), chitosan-modified (B), iron-chitosan-modified (C) and iron‑magnesium-chitosan-modified (D) biochar on the anaerobic digestion process, sludge characteristics and microbial community. The results show that the average COD removal efficiency of the four reactors during the last five days of the experimentation period was 86.95%, 85.90%, 92.22% and 93.29%, respectively. Adding iron‑magnesium-chitosan-modified biochar could improve the efficiency of COD removal in the anaerobic reactor under ammonia nitrogen stress. On day 10 of operation, the content of coenzyme F420 in the sludge of anaerobic reactors C and D reached to 0.44 and 0.57 mmol/g, respectively, indicating that the metal-chitosan complex biochar could promote the production of coenzyme F420 in the early stage of the experiment. Within the four anaerobic reactors, Firmicutes, Bacteroidetes, Proteobacteria and Chloroflexi were the dominant bacteria, and the abundance of Chloroflexi reached a maximum of 26.24% in the reactor C. As for archaea, Methanobacterium and Methanothrix were the most dominant accounting for 44.03%, 49.88%, 31.29%, 52.01% and 38.34%, 34.52%, 50.9%, 35.72% respectively in the four reactors. KEGG functional analysis showed that the energy metabolism of bacteria and archaea in the reactor D was the largest among the four reactors. Meanwhile, the gene abundance associated with carbohydrate metabolism and membrane transport of microorganisms in the reactor D was greater than that of other groups.
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Affiliation(s)
- Chengyuan Su
- Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Ministry of Education, 15 Yucai Road, Guilin, 541004, PR China; Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology for Science and Education Combined with Science and Technology Innovation Base, 12 Jiangan Road, Guilin, 541004, PR China; University Key Laboratory of Karst Ecology and Environmental Change of Guangxi Province (Guangxi Normal University), 15 Yucai Road, Guilin, 541004, PR China.
| | - AFeng Tao
- Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Ministry of Education, 15 Yucai Road, Guilin, 541004, PR China
| | - Lijian Zhao
- Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Ministry of Education, 15 Yucai Road, Guilin, 541004, PR China
| | - Pengfei Wang
- Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Ministry of Education, 15 Yucai Road, Guilin, 541004, PR China
| | - Anliu Wang
- Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Ministry of Education, 15 Yucai Road, Guilin, 541004, PR China
| | - Xian Huang
- Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Ministry of Education, 15 Yucai Road, Guilin, 541004, PR China
| | - Menglin Chen
- Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Ministry of Education, 15 Yucai Road, Guilin, 541004, PR China
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50
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Yang F, Sui L, Tang C, Li J, Cheng K, Xue Q. Sustainable advances on phosphorus utilization in soil via addition of biochar and humic substances. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 768:145106. [PMID: 33736348 DOI: 10.1016/j.scitotenv.2021.145106] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Revised: 01/08/2021] [Accepted: 01/08/2021] [Indexed: 06/12/2023]
Abstract
The intervention of human in phosphorus pool seems to be a vicious circle. The rapid population growth leads to the global food shortage, which leads to the massive use of phosphate fertilizer and the continuous exploitation of phosphate rocks. With the massive loss and fixation of phosphate fertilizer in the soil, the unavailable phosphorus in the soil becomes superfluous, while the phosphate mineral resources turn to scarce. Interestingly, exogenous carbonaceous materials, notably, biochar and humic substances, have been widely used as soil conditioners in agricultural production up to date, among other actions to interfere with the balance between the different phosphate species, which offer effective roles for increasing soil available phosphorus. This article reviews the regulation mechanisms of biochar and humic substances on phosphorus availability and circulation, including improving soil physicochemical characteristics, regulating microbial community structure, and directly interacting with phosphorus to affect the fate of phosphorus in soil. Finally, the prospects for future research directions are made, and it is hoped that the review of this article can arouse people's attention to the current plight of agricultural production and provide some methods for improving the efficiency of phosphate fertilizer use in the future.
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Affiliation(s)
- Fan Yang
- State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China; Joint Laboratory of Northeast Agricultural University and Max Planck Institute of Colloids and Interfaces (NEAU-MPICI), Harbin 150030, China; School of Water Conservancy and Civil Engineering, Northeast Agricultural University, Harbin 150030, China.
| | - Long Sui
- Joint Laboratory of Northeast Agricultural University and Max Planck Institute of Colloids and Interfaces (NEAU-MPICI), Harbin 150030, China; School of Water Conservancy and Civil Engineering, Northeast Agricultural University, Harbin 150030, China
| | - Chunyu Tang
- Joint Laboratory of Northeast Agricultural University and Max Planck Institute of Colloids and Interfaces (NEAU-MPICI), Harbin 150030, China; School of Water Conservancy and Civil Engineering, Northeast Agricultural University, Harbin 150030, China
| | - Jiangshan Li
- State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China
| | - Kui Cheng
- Joint Laboratory of Northeast Agricultural University and Max Planck Institute of Colloids and Interfaces (NEAU-MPICI), Harbin 150030, China; College of Engineering, Northeast Agricultural University, Harbin 150030, China
| | - Qiang Xue
- State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China.
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