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Qin H, Xu L, Qin L, Kang B, Zha F, Wang Q, Huang K. Removal of Cu(II) by sodium hexametaphosphate and nano zero-valent iron modified calcium bentonite: characteristic, adsorption performance and mechanism. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 358:120866. [PMID: 38663085 DOI: 10.1016/j.jenvman.2024.120866] [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: 02/06/2024] [Revised: 04/02/2024] [Accepted: 04/06/2024] [Indexed: 05/04/2024]
Abstract
Cu (II) is a toxic heavy metal commonly identified in groundwater contaminants. Bentonite-based cutoff wall is the most used method in isolating and adsorbing contaminants, while the bentonite in it easily to fail due to Cu(II) exchange. This study synthesized a novel material through the modification of calcium bentonite (CaB) utilizing sodium hexametaphosphate (SHMP) and nano zero-valent iron (NZVI). The characteristics, adsorption performance, and mechanism of the NZVI/SHMP-CaB were investigated comprehensively. The results showed that SHMP can disperse CaB and reduce flocculation, while NZVI can be further stabilized without agglomeration. The best adsorption performance of NZVI/SHMP-CaB could be obtained at the dosage of 2% SHMP and 4% NZVI. The NZVI/SHMP-CaB exhibited an outstanding removal efficiency of over 60% and 90% at a high Cu(II) concentration (pH = 6, Cu(II) = 300 mg/L) and acidic conditions (pH = 3-6, Cu(II) = 50 mg/L), respectively. The adsorption of Cu(II) by NZVI/SHMP-CaB followed a pseudo-second-order kinetic model, and fitting results from the Freundlich isothermal model suggested that the adsorption process occurred spontaneously. Besides the rapid surface adsorption on the NZVI/SHMP-CaB and ion exchange with interlayer ions in bentonite, the removal mechanism of Cu(II) also involved the chemical reduction to insoluble forms such as Cu0 and Cu2O. The generated FePO4 covered the surface of the homogenized NZVI particles, enhancing the resistance of NZVI/SHMP-CaB to acidic and oxidative environments. This study indicates that NZVI/SHMP-CaB is a promising alternative material which can be used for heavy metal removal from contaminated soil and water.
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Affiliation(s)
- Hao Qin
- School of Resource and Environmental Engineering, Hefei University of Technology, Tunxi Road 193#, Baohe District, Hefei, 230009, China.
| | - Long Xu
- School of Resource and Environmental Engineering, Hefei University of Technology, Tunxi Road 193#, Baohe District, Hefei, 230009, China.
| | - Lin Qin
- School of Resource and Environmental Engineering, Hefei University of Technology, Tunxi Road 193#, Baohe District, Hefei, 230009, China.
| | - Bo Kang
- School of Resource and Environmental Engineering, Hefei University of Technology, Tunxi Road 193#, Baohe District, Hefei, 230009, China.
| | - Fusheng Zha
- School of Resource and Environmental Engineering, Hefei University of Technology, Tunxi Road 193#, Baohe District, Hefei, 230009, China.
| | - Qiao Wang
- School of Resource and Environmental Engineering, Hefei University of Technology, Tunxi Road 193#, Baohe District, Hefei, 230009, China.
| | - Kai Huang
- College of Civil Engineering, AnHui JianZhu University, Hefei, 230601, China.
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Qiu D, Geng Y, Geng J, Du H, Chang J. Removal of dyes from wastewater using Eucalyptus wood fiber loaded nanoscale zero-valent iron: Characterization and removal mechanism. Int J Biol Macromol 2024; 266:131141. [PMID: 38537855 DOI: 10.1016/j.ijbiomac.2024.131141] [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: 01/14/2024] [Revised: 03/19/2024] [Accepted: 03/24/2024] [Indexed: 05/01/2024]
Abstract
Wood fiber as a natural and renewable material has low cost and plenty of functional groups, which owns the ability to adsorb dyes. In order to improve the application performance of wood fiber in dye-pollution wastewater, Eucalyptus wood fiber loaded nanoscale zero-valent iron (EWF-nZVI) was developed to give EWF magnetism and the ability to degrade dyes. EWF-nZVI was characterized via FTIR, XRD, zeta potential, VSM, SEM-EDS and XPS. Results showed that EWF-nZVI owned a strong magnetism of 96.51 emu/g. The dye removal process of EWF-nZVI was more in line with the pseudo-second-order kinetics model. In addition, the Langmuir isotherm model fitting results showed that the maximum removal capacities of Congo red and Rhodamine B by EWF-nZVI were 714.29 mg/g and 68.49 mg/g at 328 K, respectively. After five adsorption-desorption cycles, the regeneration efficiencies of Congo red and Rhodamine B were 74 % and 42 % in turn. The dye removal mechanisms of EWF-nZVI included redox degradation (Congo red and Rhodamine B) and electrostatic adsorption (Congo red). In summary, EWF-nZVI is a promising biomass-based material with high dye removal capacities. This work is beneficial to promote the large-scale application of wood fiber in water treatment.
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Affiliation(s)
- Dongxu Qiu
- School of Material Science and Engineering, Beihua University, Jilin 132013, China
| | - Yuan Geng
- Key Laboratory of Precision Nutrition and Food Quality, Department of Nutrition and Health, China Agricultural University, Beijing 100083, China
| | - Jing Geng
- School of Material Science and Engineering, Beihua University, Jilin 132013, China.
| | - Hongshuang Du
- School of Material Science and Engineering, Beihua University, Jilin 132013, China
| | - Jianmin Chang
- College of Material Science and Technology, Beijing Forestry University, Beijing 100083, China
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Adsorption Characteristics and Electrochemical Behaviors of Congo Red onto Magnetic MgxCo(1−x)Fe2O4 Nanoparticles Prepared via the Alcohol Solution Combustion Process of Nitrate. J Inorg Organomet Polym Mater 2023. [DOI: 10.1007/s10904-023-02545-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/21/2023]
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Zhou H, Ji S, Zhang Q, Jin W, Feng A, Lin C, Li Q. Wastewater treatment: A universal, scalable and recyclable catalyst with adjustable activity for diverse dyes degradation. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 330:117188. [PMID: 36603262 DOI: 10.1016/j.jenvman.2022.117188] [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: 10/06/2022] [Revised: 12/22/2022] [Accepted: 12/29/2022] [Indexed: 06/17/2023]
Abstract
The growing concern over water shortage and pollution is propelling and accelerating the development of sewage treatment technologies. Among them, the catalytic hydrogenation method is highly recommended from a sustainable perspective, because it can turn toxic pollutants into valuable raw materials. The catalyst with excellent activity and stability plays a critical role in this "trash to treasure" approach. Herein, we proposed a novel economical, scalable and recyclable candidate catalyst, i.e., the copper nanoparticles supported on zinc oxide nanowire array (Cu-ZnO NWA), for realizing efficient and stable dye wastewater treatment. The salix argyracea-shaped Cu-ZnO NWA displays very outstanding universality and controllability towards the catalytic hydrogenation reactions of diverse dyes, owing to the fact that ZnO nanowire array not only offers a platform to realize stable and homogeneous dispersion of Cu nanoparticles, but also provides a large quantity of catalytically active sites. More attractively, its synthetic method can be facilely extended to various conductive substrates through combined electrodeposition and hydrothermal technique, showing its general applicability for the surface assembly of sewage treatment facilities. Benefiting from above advantages, this proposal offers an attractive approach for large-scale and continuous decolorization of dye wastewater, and presents a broad application prospect in the textile printing industry.
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Affiliation(s)
- Huiqin Zhou
- Institute of Advanced Wear & Corrosion Resistant and Functional Materials, Jinan University, Guangzhou, 510632, China
| | - Shanshan Ji
- Department of Biological and Chemical Engineering, Jining Polytechnic, Jining, 272037, China
| | - Qinqin Zhang
- College of Chemical Engineering, Shenyang University of Chemical Technology, Shenyang, 110142, China.
| | - Weihong Jin
- Institute of Advanced Wear & Corrosion Resistant and Functional Materials, Jinan University, Guangzhou, 510632, China.
| | - Anlin Feng
- Institute of Advanced Wear & Corrosion Resistant and Functional Materials, Jinan University, Guangzhou, 510632, China
| | - Chaoyu Lin
- Institute of Advanced Wear & Corrosion Resistant and Functional Materials, Jinan University, Guangzhou, 510632, China
| | - Qingyang Li
- Institute of Advanced Wear & Corrosion Resistant and Functional Materials, Jinan University, Guangzhou, 510632, China.
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Baig MT, Kayan A. Eco-friendly novel adsorbents composed of hybrid compounds for efficient adsorption of methylene blue and Congo red dyes: Kinetic and thermodynamic studies. SEP SCI TECHNOL 2023. [DOI: 10.1080/01496395.2023.2166845] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Mirza Talha Baig
- Department of Chemistry, Faculty of Art and Science, Kocaeli University, Kocaeli, Turkey
| | - Asgar Kayan
- Department of Chemistry, Faculty of Art and Science, Kocaeli University, Kocaeli, Turkey
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Grover A, Mohiuddin I, Lee J, Brown RJC, Malik AK, Aulakh JS, Kim KH. Progress in pre-treatment and extraction of organic and inorganic pollutants by layered double hydroxide for trace-level analysis. ENVIRONMENTAL RESEARCH 2022; 214:114166. [PMID: 36027961 DOI: 10.1016/j.envres.2022.114166] [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: 04/18/2022] [Revised: 08/17/2022] [Accepted: 08/18/2022] [Indexed: 06/15/2023]
Abstract
Continuous release of pollutants into the environment poses serious threats to environmental sustainability and human health. For trace-level analysis of pollutants, layered double hydroxide (LDH) is an attractive option to impart enhanced sorption capability and sensitivity toward pollutants because of its unique layered structure, tunable interior architecture, high anion-exchange capacities, and high porosity (e.g., Zn/Cr LDH/DABCO-IL, Ni/Al LDH, CS-Ni/Fe LDH, SDS-Fe3O4@SiO2@Mg-Al LDH, Boeh/Mg/Al LDH/pC, and Fe@NiAl LDH). In concert with the well-defined analytical methodologies (e.g., HPLC and GC), the LDH materials can be employed to detect trace-level targets (e.g., as low as ∼ 20 fg/L for phenols) in aqueous environments. This review highlights LDH as a promising material for pre-treatment of a variety of organic and inorganic target pollutants in complex real matrices. Challenges and future requirements for research into LDH-based analytical methods are also discussed.
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Affiliation(s)
- Aman Grover
- Department of Chemistry, Punjabi University, Patiala, 147002, Punjab, India
| | - Irshad Mohiuddin
- Department of Chemistry, Panjab University, Sector-14, Chandigarh, 160014, India
| | - Jechan Lee
- Department of Global Smart City & School of Civil, Architectural Engineering, and Landscape Architecture, Sungkyunkwan University, Suwon, 16419, Republic of Korea
| | - Richard J C Brown
- Atmospheric Environmental Science Department, National Physical Laboratory, Teddington, TW11 0LW, United Kingdom
| | - Ashok Kumar Malik
- Department of Chemistry, Punjabi University, Patiala, 147002, Punjab, India.
| | | | - Ki-Hyun Kim
- Department of Civil and Environmental Engineering, Hanyang University, 222 Wangsimni-ro, Seoul, 04763, Republic of Korea.
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Nano Geochemistry. NANOMATERIALS 2022; 12:nano12071039. [PMID: 35407157 PMCID: PMC9000425 DOI: 10.3390/nano12071039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Revised: 03/14/2022] [Accepted: 03/18/2022] [Indexed: 11/26/2022]
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Liu J, Peng C, Shi X. Preparation, characterization, and applications of Fe-based catalysts in advanced oxidation processes for organics removal: A review. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 293:118565. [PMID: 34822943 DOI: 10.1016/j.envpol.2021.118565] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Revised: 10/23/2021] [Accepted: 11/20/2021] [Indexed: 06/13/2023]
Abstract
Fe-based catalysts as low-cost, high-efficiency, and non-toxic materials display superior catalytic performances in activating hydrogen peroxide, persulfate (PS), peracetic acid (PAA), percarbonate (PC), and ozone to degrade organic contaminants in aqueous solutions. They mainly include ferrous salts, zero-valent iron, iron-metal composites, iron sulfides, iron oxyhydroxides, iron oxides, and supported iron-based catalysts, which have been widely applied in advanced oxidation processes (AOPs). However, there is lack of a comprehensive review systematically reporting their synthesis, characterization, and applications. It is imperative to evaluate the catalytic performances of various Fe-based catalysts in diverse AOPs systems and reveal the activation mechanisms of different oxidants by Fe-based catalysts. This work detailedly summarizes the synthesis methods and characterization technologies of Fe-based catalysts. This paper critically evaluates the catalytic performances of Fe-based catalysts in diverse AOPs systems. The effects of solution pH, reaction temperature, coexisting ions, oxidant concentration, catalyst dosage, and external energy on the degradation of organic contaminants in the Fe-based catalyst/oxidant systems and the stability of Fe-based catalysts are also discussed. The activation mechanisms of various oxidants and the degradation pathways of organic contaminants in the Fe-based catalyst/oxidant systems are revealed by a series of novel detection methods and characterization technologies. Future research prospects on the potential preparation means of Fe-based catalysts, practical applications, assistive technologies, and impact in AOPs are proposed.
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Affiliation(s)
- Jiwei Liu
- College of Geography and Environment, Shandong Normal University, Jinan, Shandong, 250014, China.
| | - Changsheng Peng
- Guangdong Provincial Key Laboratory of Environmental Health and Land Resource, Zhaoqing University, Zhaoqing, 526061, China
| | - Xiangli Shi
- College of Geography and Environment, Shandong Normal University, Jinan, Shandong, 250014, China
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RSM-Based Preparation and Photoelectrocatalytic Performance Study of RGO/TiO2 NTs Photoelectrode. Processes (Basel) 2021. [DOI: 10.3390/pr9091492] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
In this paper, reduced graphene oxide (RGO) was prepared by a modified Hummers method and chemical reduction method, and an RGO/TiO2 NTs (RGO/TiO2 nanotubes) photoelectrode was prepared by the electrochemical deposition method. The as-prepared RGO/TiO2 NTs were analyzed by scanning electron microscopy (SEM) and X-ray diffraction (XRD), and their photocatalytic activities were investigated by measuring the degradation of methylene blue (MB) under simulated solar light irradiation. The SEM and XRD results indicated that the original tubular structure of TiO2-NTs was not changed after RGO modification. The surface of the TiO2 NTs photoelectrode was covered with a non-uniform, flake-shaped reduced graphene oxide film. The thickness of the RGO/TiO2 NTs was increased to about 22.60 nm. The impedance of the RGO/TiO2 NTs was smaller than that of the TiO2 NT photoelectrode. The optimal preparation conditions of RGO/TiO2 NT photoelectrodes were investigated by using a single factor method and response surface method. The best preparation conditions were as follows: deposition potential at 1.19 V, deposition time of 10.27 min, and deposition temperature at 24.94 °C.
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Rajak JK, Khandelwal N, Behera MP, Tiwari E, Singh N, Ganie ZA, Darbha GK, Abdolahpur Monikh F, Schäfer T. Removal of chromate ions from leachate-contaminated groundwater samples of Khan Chandpur, India, using chitin modified iron-enriched hydroxyapatite nanocomposite. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:41760-41771. [PMID: 33788088 DOI: 10.1007/s11356-021-13549-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Accepted: 03/16/2021] [Indexed: 06/12/2023]
Abstract
Chromite ore processing residues (COPR) are real environmental threats, leading to CrO42-, i.e., Cr (VI) leaching into groundwater. It is of serious concern as Cr (VI) is proven to be carcinogenic. Here we emphasize the application of novel and eco-friendly chitin functionalized iron-enriched hydroxyapatite nanocomposite (HAP-Fe0-Ct) in the remediation of Cr (VI)-contaminated groundwater samples collected from Khan Chandpur, India, where the level of Cr (VI) is found to be 11.7 mg/L in a complex aqueous matrix having 793 mg/L of total dissolved solids. Chitin functionality in the composite has resulted in positive zeta potential at circum-neutral pH, favoring electrostatic attraction of chromate ions and resulting in its bulk surface transport. The HAP-Fe0-Ct showed faster kinetics of removal with efficiency (qm = 13.9 ± 0.46 mg/g) for Cr (VI). The composite has shown sorption equilibrium and 100% removal of Cr (VI) within 3 h of interaction time in groundwater samples. No Cr (VI) leaching in the acid wash process at pH 3.5 also suggests chromium's strong chemisorption onto nanocomposite. During the interaction in aqueous solutions, the reduced iron (Fe0) on the nanocomposite becomes oxidized, suggesting the probable simultaneous reduction of Cr (VI) and its co-precipitation. Continuous column extraction of chromate ions was also efficient in both spiked solutions (39.7 ± 0.04 mg/g) and COPR contaminated water (13.2 ± 0.09 mg/g). Reusability up to three cycles with almost complete Cr (VI) removal may be attributed to surface protonation, new binding sites generation, and electron transfer from Fe0 core through defects. The study concludes that HAP-Fe0-Ct could be utilized for continuous Cr (VI) removal from COPR contaminated complex groundwater matrices.
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Affiliation(s)
- Jai Kishan Rajak
- Environmental Nanoscience Laboratory, Department of Earth Sciences, IISER Kolkata, Mohanpur, West Bengal, 741246, India
| | - Nitin Khandelwal
- Environmental Nanoscience Laboratory, Department of Earth Sciences, IISER Kolkata, Mohanpur, West Bengal, 741246, India
| | - Mahima Prasad Behera
- Environmental Nanoscience Laboratory, Department of Earth Sciences, IISER Kolkata, Mohanpur, West Bengal, 741246, India
| | - Ekta Tiwari
- Environmental Nanoscience Laboratory, Department of Earth Sciences, IISER Kolkata, Mohanpur, West Bengal, 741246, India
| | - Nisha Singh
- Environmental Nanoscience Laboratory, Department of Earth Sciences, IISER Kolkata, Mohanpur, West Bengal, 741246, India
| | - Zahid Ahmad Ganie
- Environmental Nanoscience Laboratory, Department of Earth Sciences, IISER Kolkata, Mohanpur, West Bengal, 741246, India
| | - Gopala Krishna Darbha
- Environmental Nanoscience Laboratory, Department of Earth Sciences, IISER Kolkata, Mohanpur, West Bengal, 741246, India.
- Center for Climate & Environmental Studies, IISER Kolkata, Mohanpur, West Bengal, 741246, India.
| | - Fazel Abdolahpur Monikh
- Department of Environmental & Biological Sciences, University of Eastern Finland, P.O. Box 111, FI-80101, Joensuu, Finland
| | - Thorsten Schäfer
- Institute of Geosciences, Applied Geology, Friedrich-Schiller-Universitat Jena, Burgweg 11, D-07749, Jena, Germany
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Effective adsorption of methylene blue dye from water solution using renewable natural hydrogel bionanocomposite based on tragacanth gum: Linear-nonlinear calculations. Int J Biol Macromol 2021; 187:319-324. [PMID: 34298053 DOI: 10.1016/j.ijbiomac.2021.07.105] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Revised: 07/07/2021] [Accepted: 07/15/2021] [Indexed: 01/25/2023]
Abstract
Today, hydrogels opened new windows to the high-tech due to their amazing features. Thus, we applied hydrogel nanocomposite (HNC) made of tragacanth gum (a kind of polysaccharide) and CaCO3 nanoparticles to remove methylene blue dye (MBD) from the water solution. We used nonlinear and linear isotherms and kinetics as well as thermodynamics to uncover the adsorption mechanism. The results showed that the hydrogel could remove 80% of MBD. Besides, the linear form of the pseudo-second-order kinetic model fits well with the results, showing chemical interactions. We found that this process follows both Sips and Redlich-Peterson models by applying nonlinear and linear isotherm models. The maximum adsorption capacities from nonlinear and linear Sips were 1401 and 2145 mg/g, respectively. Based on the thermodynamic equations, the adsorption of MBD onto HNC was physiochemical and exothermic. According to the phenomenological calculations, diffusion from the bulk (or film diffusion, Df = 1.2 × 10-8 cm2/s) is the primary mechanism.
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Khandelwal N, Darbha GK. Combined antioxidant capped and surface supported redox-sensitive nanoparticles for continuous elimination of multi-metallic species. Chem Commun (Camb) 2021; 57:7280-7283. [PMID: 34212165 DOI: 10.1039/d1cc02972j] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A strategic modification involving (i) a multi-functional almond shell biochar surface support and (ii) capping with almond skin extracted antioxidants was performed to preserve redox-sensitive Fe0 nanoparticles (NPs). pXRD data showed generation of an iron-carbonyl shell on the supported Fe0 NPs (SA-Fe0), justifying successful antioxidant capping. The total metal removal capacity of 695 mg g-1i.e. AsO2- (300.2 mg g-1) > Cd2+ (224.2 mg g-1) > CrO42- (125.2 mg g-1) > Ni2+ (44.5 mg g-1) in batch mode, and 102 mg g-1 in continuous column setup confirms the excellent reactivity of the SA-Fe0 nanocomposite. Loss of the iron-carbonyl shell and iron oxidation during interaction with contaminants confirm no hindrance in electron transfer due to antioxidant capping.
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Affiliation(s)
- Nitin Khandelwal
- Environmental Nanoscience Laboratory, Department of Earth Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, West Bengal 741246, India.
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