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Zhang X, Du H, Wang C, Liu J, Zhang Q, Zhang Z, Tan C, Li H, Hu Y. Simultaneous removal of phenanthrene and Pb using novel PPG-CNTs-nZVI beads. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024:10.1007/s11356-024-32986-8. [PMID: 38613749 DOI: 10.1007/s11356-024-32986-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2023] [Accepted: 03/15/2024] [Indexed: 04/15/2024]
Abstract
PPG-CNTs-nZVI bead was synthesized by polyvinyl alcohol, pumice, carbon nanotube, and guar gum-nanoscale zero-valent iron to be applied on simultaneously removal of polycyclic aromatic hydrocarbons (PAHs; phenanthrene) and heavy metals (Pb2+) via adsorption. The individual and simultaneous removal efficiency of phenanthrene and Pb2+ using the PPG-CNTs-nZVI beads was evaluated with a range of initial concentrations of these two pollutants. The kinetics and isotherms of phenanthrene and Pb2+ adsorption by the PPG-CNTs-nZVI beads were also determined. The PPG-CNTs-nZVI beads show reasonably high phenanthrene adsorption capacities (up to 0.16 mg/g), and they absorbed 85% of the phenanthrene (initial concentration 0.5 mg/L) in 30 min. High Pb2+ adsorption capabilities were also demonstrated by the PPG-CNTs-nZVI beads (up to 11.6 mg/g). The adsorption fits the Langmuir model better than the Freundlich model. The adsorption still remained stable with various ionic strength circumstances and a wide pH range (2-5). Additionally, the co-adsorption of phenanthrene and Pb2+ by the PPG-CNTs-nZVI beads resulted in synergistic effects. Particularly, phenanthrene-Pb2+ complex formation via π-cation interactions demonstrated a greater affinity than phenanthrene or Pb2+ alone. The present findings suggest that PPG-CNTs-nZVI beads may be effective sorbents for the simultaneous removal of PAHs and heavy metals from contaminated waters.
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Affiliation(s)
- Xiaoran Zhang
- Key Laboratory of Urban Stormwater System and Water Environment, Ministry of Education, Beijing University of Civil Engineering and Architecture, Beijing, 102616, China
- Beijing Engineering Research Center of Sustainable Urban Sewage System Construction and Risk Control, Beijing University of Civil Engineering and Architecture, Beijing, 100044, China
| | - Haoyu Du
- Key Laboratory of Urban Stormwater System and Water Environment, Ministry of Education, Beijing University of Civil Engineering and Architecture, Beijing, 102616, China
| | - Chunxia Wang
- Beijing Engineering Research Center of Sustainable Urban Sewage System Construction and Risk Control, Beijing University of Civil Engineering and Architecture, Beijing, 100044, China
- Beijing Building Technology Development Co, Ltd, Beijing, 100039, China
| | - Junfeng Liu
- Department of Water Conservancy and Civil Engineering, Beijing Vocational College of Agriculture, Beijing, 102442, China
| | - Qiao Zhang
- Key Laboratory of Urban Stormwater System and Water Environment, Ministry of Education, Beijing University of Civil Engineering and Architecture, Beijing, 102616, China
- Beijing Engineering Research Center of Sustainable Urban Sewage System Construction and Risk Control, Beijing University of Civil Engineering and Architecture, Beijing, 100044, China
| | - Ziyang Zhang
- Beijing Engineering Research Center of Sustainable Urban Sewage System Construction and Risk Control, Beijing University of Civil Engineering and Architecture, Beijing, 100044, China
| | - Chaohong Tan
- Key Laboratory of Urban Stormwater System and Water Environment, Ministry of Education, Beijing University of Civil Engineering and Architecture, Beijing, 102616, China
- Beijing Engineering Research Center of Sustainable Urban Sewage System Construction and Risk Control, Beijing University of Civil Engineering and Architecture, Beijing, 100044, China
| | - Haiyan Li
- Key Laboratory of Urban Stormwater System and Water Environment, Ministry of Education, Beijing University of Civil Engineering and Architecture, Beijing, 102616, China.
- Beijing Engineering Research Center of Sustainable Urban Sewage System Construction and Risk Control, Beijing University of Civil Engineering and Architecture, Beijing, 100044, China.
| | - Yuansheng Hu
- UCD Dooge Centre for Water Resources Research, School of Civil Engineering, University College Dublin, Belfield, Dublin, D04 V1W8, Ireland
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Yang X, Yang W, Chen Y, Li Z, Yang G. Chitosan-stabilized iron-copper nanoparticles for efficient removal of nitrate. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:97298-97309. [PMID: 37589845 DOI: 10.1007/s11356-023-29319-6] [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: 04/05/2023] [Accepted: 08/09/2023] [Indexed: 08/18/2023]
Abstract
Chitosan-stabilized iron-copper nanomaterials (CS-nZVI/Cu) were successfully prepared and applied to the nitrate removal. Batch experiments were conducted to examine the effects of experimental parameters on nitrate removal, including Cu loading, CS-nZVI/Cu dosages, initial nitrate concentrations, and initial pHs. From the experimental date, it was concluded that CS-nZVI/Cu has a high nitrate removal efficiency, which can be more than 97%, respectively, at Cu loading = 5%, dosages of CS-nZVI/Cu = 3 g/L, initial nitrate concentrations of 30~120 mg/L, and initial pH values = 2~9. Additionally, the kinetic data for CS-nZVI/Cu were found to fit well with the first-order kinetic model with a rate constant of 0.15 (mg∙L)1-n/min, where n=1. The Langmuir model showed a good fit for NO3- removal, indicating that monolayer chemisorption occurred. The SEM and TEM analyses showed that the addition of chitosan resulted in improved dispersion of the CS-nZVI/Cu. The CS-nZVI/Cu nanomaterials have a more complete elliptical shape and are between 50 and 100 nm in size. The XRD analysis showed that the chitosan encapsulation reduced the oxidation of the iron component and the main product was Fe3O4. The FT-IR analysis showed that the immobilization of chitosan and the iron was accomplished by the ligand interaction. The nitrogen adsorption-desorption isotherm results showed that the CS-nZVI/Cu specific surface area and pore volume decreased significantly after the reaction. Adsorption, oxidation, and reduction are possible mechanisms for nitrate removal by CS-nZVI/Cu. The XPS analysis investigated the contribution of nZVI and Cu in the removal mechanism. Adding copper accelerates the reaction time and rate. In addition, nZVI played a vital role in reducing nitrate to N2. Based on these results, it looks like CS-nZVI/Cu could be a satisfactory material for nitrate removal.
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Affiliation(s)
- Xiaxia Yang
- State Key Laboratory of Materials Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, No. 30 Puzhu South Road, Pukou District, Nanjing, 211816, People's Republic of China
| | - Wenhong Yang
- State Key Laboratory of Materials Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, No. 30 Puzhu South Road, Pukou District, Nanjing, 211816, People's Republic of China
| | - Yingjie Chen
- State Key Laboratory of Materials Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, No. 30 Puzhu South Road, Pukou District, Nanjing, 211816, People's Republic of China
| | - Zixi Li
- State Key Laboratory of Materials Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, No. 30 Puzhu South Road, Pukou District, Nanjing, 211816, People's Republic of China
| | - Gang Yang
- State Key Laboratory of Materials Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, No. 30 Puzhu South Road, Pukou District, Nanjing, 211816, People's Republic of China.
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Shen H, Zhong D, Xu Y, Chang H, Wang H, Xu C, Mou J, Zhong N. Polyacrylate stabilized ZVI/Cu bimetallic nanoparticles for removal of hexavalent chromium from wastewater. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:5847-5860. [PMID: 35984560 DOI: 10.1007/s11356-022-22609-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Accepted: 08/15/2022] [Indexed: 06/15/2023]
Abstract
In this work, a magnetic core-shell composite zero-valent iron/copper-polyacrylate (ZVI/Cu-PAA) was synthesized by a simple liquid-phase reduction process and used for hexavalent chromium Cr(VI) removal from wastewater. The optimization experiments show that the optimal dosages of polyacrylate and Cu are 7.00 wt% and 8.25 wt%, respectively. The maximum adsorption capacity and removal rate of Cr(VI) by ZVI/Cu-PAA reached 106.12 mg g-1 and 99.05% at pH 5.5, respectively. Furthermore, the presence of coexisting ions such as Ca2+, Mg2+, Na+, and NO3- had no significant effect on its Cr(VI) removal performance. The excellent performance of ZVI/Cu-PAA is attributed to that the modification of polyacrylate can not only give more active sites but also inhibit agglomeration of nano-metallic particles, while Cu doping promotes the electron generation and transformation of Fe(III)/Fe(II) and Cu(II)/Cu(I) redox cycles. This makes ZVI/Cu-PAA has rich active sites and excellent stability, and has broad application prospects in the remediation of Cr (VI) polluted wastewater. The magnetic core-shell composite ZVI/Cu-PAA has excellent Cr (VI) removal performance because of its rich active sites and high electron transformation efficiency.
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Affiliation(s)
- Hongyu Shen
- School of Chemical Engineering, Chongqing University of Technology, Chongqing, 400054, China
| | - Dengjie Zhong
- School of Chemical Engineering, Chongqing University of Technology, Chongqing, 400054, China.
| | - Yunlan Xu
- School of Chemical Engineering, Chongqing University of Technology, Chongqing, 400054, China
| | - Haixing Chang
- School of Chemical Engineering, Chongqing University of Technology, Chongqing, 400054, China
| | - Hui Wang
- School of Chemical Engineering, Chongqing University of Technology, Chongqing, 400054, China
| | - Chunzi Xu
- School of Chemical Engineering, Chongqing University of Technology, Chongqing, 400054, China
| | - Jiaxing Mou
- School of Chemical Engineering, Chongqing University of Technology, Chongqing, 400054, China
| | - Nianbing Zhong
- School of Electrical and Electronic Engineering, Chongqing University of Technology, Chongqing, 400054, China
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Li H, Jiang Q, Li R, Zhang R, Jiang S, Zhang J, Qu J, Zhang L, Zhang Y. Facile one-step synthesis of biochar supported iron nanoparticles for enhancing Pb(II) scavenging from water: Performance and mechanisms. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.118815] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Wang Y, Lin N, Gong Y, Wang R, Zhang X. Cu-Fe embedded cross-linked 3D hydrogel for enhanced reductive removal of Cr(VI): Characterization, performance, and mechanisms. CHEMOSPHERE 2021; 280:130663. [PMID: 33971416 DOI: 10.1016/j.chemosphere.2021.130663] [Citation(s) in RCA: 67] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2021] [Revised: 04/21/2021] [Accepted: 04/22/2021] [Indexed: 06/12/2023]
Abstract
Porous hydrogel, as a high-efficiency adsorbent for heavy metals, suffers the drawbacks of the use of expensive and toxic reagents during the process of preparation, further limiting its application ranges. Besides, the heavy metals couldn't be transformed into nontoxic species, which leads to the environmental pollution risk. Herein, a three-dimensionally (3D) structured Cu-Fe embedded cross-linked cellulose hydrogel (nFeCu-CH) was innovatively fabricated by a novel self-assembly and in-situ reduction method, which exhibited exceptionally enhanced adsorption-reduction property towards Cr(VI) wastewater. The results of degradation experiment exhibited that the removal reaction followed Langmuir-Hinshelwood first order kinetic model and the degradation rate constant decreased with solution pH and initial Cr(VI) concentration, while increased with nFeCu-CH dosage and temperature. Regeneration studies demonstrated that more than 88% of Cr(VI) was removed by nFeCu-CH even after five times of cycling. nFeCu-CH exhibited excellent reductive activity, which had a close connection with the superiority of 3D crosslinked architectures and bimetallic synergistic effect. And 97.1% of Cr(VI) could be removed when nFeCu-CH dosage was 9.5 g/L, pH was 5, initial concentration of Cr(VI) was 20 mg/L and temperature was 303 K. Combined with cellulose hydrogel not only could provide additional active sites, but also could restrain the crystallite growth and agglomeration of nano-metallic particles, leading to the promotion of Cr(VI) removal. In addition, coating with Cu facilitated the generation and transformation of electrons according to the continuous redox cycles of Fe(III)/Fe(II) and Cu(II)/Cu(I), leading to the further improvement of the reductivity of nFeCu-CH. Multiple interaction mechanisms including adsorption, reduction and co-precipitation between nFeCu-CH and Cr(VI) were realized. The current work suggested that nFeCu-CH with highly reactive sites, excellent stability and recyclability was considered as an potential material for remediation of Cr(VI) contaminated wastewater.
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Affiliation(s)
- Yin Wang
- School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai, 200093, China
| | - Naipeng Lin
- School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai, 200093, China
| | - Yishu Gong
- School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai, 200093, China
| | - Ruotong Wang
- School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai, 200093, China
| | - Xiaodong Zhang
- School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai, 200093, China.
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Gao K, Su W, Song J. Preparation of Melamine Foam Supported Nanoscale Zero Valent Iron and Its Application for Removal of Cr(VI) from Aqueous Solution and Hydrogenation of p‐Nitrophenol. ChemistrySelect 2021. [DOI: 10.1002/slct.202101608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Kangqi Gao
- Shandong Provincial Key Laboratory of Molecular Engineering School of Chemistry and Chemical Engineering Qilu University of Technology (Shandong Academy of Sciences) Jinan 250353 P. R. China
| | - Wen Su
- Administration of Laboratory and Equipment Management Qilu University of Technology (Shandong Academy of Sciences) Jinan 250353 P. R. China
| | - Jianjun Song
- Shandong Provincial Key Laboratory of Molecular Engineering School of Chemistry and Chemical Engineering Qilu University of Technology (Shandong Academy of Sciences) Jinan 250353 P. R. China
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Shi Y, Yu C, Liu M, Lin Q, Lei M, Wang D, Yang M, Yang Y, Ma J, Jia Z. One-pot synthesis of spherical nanoscale zero-valent iron/biochar composites for efficient removal of Pb( ii). RSC Adv 2021; 11:36826-36835. [PMID: 35494362 PMCID: PMC9043637 DOI: 10.1039/d1ra07373g] [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: 10/04/2021] [Accepted: 10/21/2021] [Indexed: 01/10/2023] Open
Abstract
In this study, a spherical Fe/C composite (AIBC) was successfully prepared via carbonization of Fe3+-crosslinked sodium alginate. The removal capacity and mechanism of AIBC were evaluated for the adsorption of Pb(ii) from aqueous solution and compared with that of commercial nanoscale zero-valent iron (nZVI). The effects of the initial concentration, pH of Pb(ii) solution, the contact time, coexisting anions, and aging under air were investigated. The results showed that the pH had a strong impact on the adsorption of Pb(ii) by AIBC. The adsorption data for AIBC followed the Langmuir model, while the maximum adsorption capacity at pH 5 was 1881.73 mg g−1. The AIBC had a higher adsorption capability than nZVI, especially under the condition of relatively high Pb(ii) concentrations. The oxidation–reduction reaction between Fe and Pb(ii) was the main mechanism for the adsorption of Pb(ii) onto nZVI. AIBC converted the largest amount of Pb(ii) into PbO·XH2O/Pb(OH)2 mainly by generating Fe2+. In this study, a spherical Fe/C composite (AIBC) was successfully prepared via carbonization of Fe3+-crosslinked sodium alginate.![]()
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Affiliation(s)
- Yunlong Shi
- Key Laboratory of Water Pollution Treatment & Resource Reuse of Hainan Province, College of Chemistry and Chemical Engineering, Hainan Normal University, No. 99 Longkunnan Road, Haikou, 571158, China
- Key Laboratory of Natural Polymer Function Material of Haikou City, College of Chemistry and Chemical Engineering, Hainan Normal University, No. 99 Longkunnan Road, Haikou, 571158, China
| | - Changjiang Yu
- Key Laboratory of Water Pollution Treatment & Resource Reuse of Hainan Province, College of Chemistry and Chemical Engineering, Hainan Normal University, No. 99 Longkunnan Road, Haikou, 571158, China
- Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education, College of Chemistry and Chemical Engineering, Hainan Normal University, No. 99 Longkunnan Road, Haikou, 571158, China
- Key Laboratory of Natural Polymer Function Material of Haikou City, College of Chemistry and Chemical Engineering, Hainan Normal University, No. 99 Longkunnan Road, Haikou, 571158, China
| | - Mengying Liu
- Key Laboratory of Natural Polymer Function Material of Haikou City, College of Chemistry and Chemical Engineering, Hainan Normal University, No. 99 Longkunnan Road, Haikou, 571158, China
| | - Qiang Lin
- Key Laboratory of Water Pollution Treatment & Resource Reuse of Hainan Province, College of Chemistry and Chemical Engineering, Hainan Normal University, No. 99 Longkunnan Road, Haikou, 571158, China
- Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education, College of Chemistry and Chemical Engineering, Hainan Normal University, No. 99 Longkunnan Road, Haikou, 571158, China
- Key Laboratory of Natural Polymer Function Material of Haikou City, College of Chemistry and Chemical Engineering, Hainan Normal University, No. 99 Longkunnan Road, Haikou, 571158, China
| | - Man Lei
- Key Laboratory of Natural Polymer Function Material of Haikou City, College of Chemistry and Chemical Engineering, Hainan Normal University, No. 99 Longkunnan Road, Haikou, 571158, China
| | - Darun Wang
- Key Laboratory of Natural Polymer Function Material of Haikou City, College of Chemistry and Chemical Engineering, Hainan Normal University, No. 99 Longkunnan Road, Haikou, 571158, China
| | - Mengwei Yang
- Key Laboratory of Natural Polymer Function Material of Haikou City, College of Chemistry and Chemical Engineering, Hainan Normal University, No. 99 Longkunnan Road, Haikou, 571158, China
| | - Yuting Yang
- Key Laboratory of Natural Polymer Function Material of Haikou City, College of Chemistry and Chemical Engineering, Hainan Normal University, No. 99 Longkunnan Road, Haikou, 571158, China
| | - Jian Ma
- Key Laboratory of Water Pollution Treatment & Resource Reuse of Hainan Province, College of Chemistry and Chemical Engineering, Hainan Normal University, No. 99 Longkunnan Road, Haikou, 571158, China
- Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education, College of Chemistry and Chemical Engineering, Hainan Normal University, No. 99 Longkunnan Road, Haikou, 571158, China
- Key Laboratory of Natural Polymer Function Material of Haikou City, College of Chemistry and Chemical Engineering, Hainan Normal University, No. 99 Longkunnan Road, Haikou, 571158, China
| | - Zhengya Jia
- Hainan Huantai Inspection Technology Co. Ltd, Haikou, 571158, China
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Wang Y, Yu L, Wang R, Wang Y, Zhang X. A novel cellulose hydrogel coating with nanoscale Fe 0 for Cr(VI) adsorption and reduction. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 726:138625. [PMID: 32315860 DOI: 10.1016/j.scitotenv.2020.138625] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/25/2019] [Revised: 04/08/2020] [Accepted: 04/09/2020] [Indexed: 06/11/2023]
Abstract
A novel cellulose hydrogel coating nanoscale Fe0 (CH@nFe0) was synthesized and utilized to improve the dispersibility and oxidation resistance of nFe0. The composition and structure of CH@nFe0 were analyzed by scanning electron microscopy (SEM), X-ray diffraction (XRD), Fourier transform-infrared spectroscopy (FT-IR), and X-ray photoelectron spectroscopy (XPS) before and after its reaction with Cr(VI). The performance of CH@nFe0 in the removal of Cr(VI) was evaluated through a comparative experiment between nFe0 and CH. The influence of the initial concentration of Cr(VI), temperature, dosage, and the initial pH of the solution were also evaluated in this reaction system. The results showed that CH@nFe0 allowed a higher Cr(VI) removal rate compared to nFe0 and CH. This might have derived from an enhanced reduction and adsorption of Cr(VI) by CH. Meanwhile, the network structure of the cellulose hydrogel served as a mass-transfer channel between Cr(VI) and nFe0. In addition, the increase of the initial solution pH minimized the removal of Cr(VI). This mechanism revealed that CH coating resulted in an enhancement of the adsorption capability and reducibility of CH@nFe0 with respect to Cr(VI). The CH@nFe0 composite is characterized by an advantageous mesoporous network structure and functional groups of amide and carboxylic acid, which provide additional active sites and promote mass transfer. This new three-dimensional (3-D) cellulose hydrogel coating containing nFe0 can be effectively used for the removal of Cr(VI) ions from aquatic environments.
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Affiliation(s)
- Yin Wang
- School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Lan Yu
- School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Ruotong Wang
- School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Yun Wang
- School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Xiaodong Zhang
- School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, China.
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The Influence of Pluronic F-127 Modification on Nano Zero-Valent Iron (NZVI): Sedimentation and Reactivity with 2,4-Dichlorophenol in Water Using Response Surface Methodology. Catalysts 2020. [DOI: 10.3390/catal10040412] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Nano zero-valent iron (NZVI) is widely used for reducing chlorinated organic pollutants in water. However, the stability of the particles will affect the removal rate of the contaminant. In order to enhance the stability of nano zero-valent iron (NZVI), the particles were modified with F-127 as an environmentally friendly organic stabilizer. The study investigated the effect of the F-127 mass ratio on the colloidal stability of NZVI. Results show that the sedimentation behavior of F-NZVI varied at different mass ratios. A biphasic model was used to describe the two time-dependent settling processes (rapid sedimentation followed by slower settling), and the settling rates were calculated. The surface morphology of the synthesized F-NZVI was observed with a scanning electron microscope (SEM), and the functional groups of the samples were analyzed with Fourier Transform Infrared Spectroscopy (FTIR). Results show that the F-127 was successfully coated on the surface of the NZVI, and that significantly improved the stability of NZVI. Finally, in order to optimize the removal rate of 2,4-dichlorophenol (2,4-DCP) by F-NZVI, three variables were tested: the initial concentration 2,4-DCP, the pH, and the F-NZVI dosage. These were evaluated with a Box-Behnken Design (BBD) of response surface methodology (RSM). The experiments were designed by Design Expert software, and the regression model of fitting quadratic model was established. The following optimum removal conditions were determined: pH = 5, 3.5 g·L−1 F-NZVI for 22.5 mg·L−1 of 2,4-DCP.
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Ascorbic Acid-Assisted Polyol Synthesis of Iron and Fe/GO, Fe/h-BN Composites for Pb 2+ Removal from Wastewaters. NANOMATERIALS 2019; 10:nano10010037. [PMID: 31877892 PMCID: PMC7023246 DOI: 10.3390/nano10010037] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Revised: 12/12/2019] [Accepted: 12/19/2019] [Indexed: 11/17/2022]
Abstract
Iron powders and Fe/graphene oxide and Fe/boron nitride composites were synthesized by means of a polyol synthesis method. The effect of NaOH/Fe and ascorbic acid/Fe ratios on the characteristics of synthesized products were evaluated. The samples were characterized by X-ray diffraction, scanning and transmission electron microscopy, low-temperature nitrogen adsorption and Raman-spectroscopy. Ascorbic acid-assisted polyol synthesis resulted in the 10-fold decrease of the iron particles' size and almost 2-fold increase of lead removal efficiency. The deposition of iron on the surface of graphene oxide lead to the formation of small 20-30 nm sized particles as well as bigger 200-300 nm sized particles, while the reduction in presence of boron nitride resulted in the 100-200 nm sized particles. The difference is attributed to the surface state of graphene oxide and boron nitride. Adsorption properties of the obtained materials were studied in the process of Pb2+ ion removal from wastewater.
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Removal of Different Kinds of Heavy Metals by Novel PPG-nZVI Beads and Their Application in Simulated Stormwater Infiltration Facility. APPLIED SCIENCES-BASEL 2019. [DOI: 10.3390/app9204213] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Polyvinyl alcohol and pumice synthetized guar gum-nanoscale zerovalent iron beads (PPG-nZVI beads) were synthesized, and their adsorption towards Pb2+, Cu2+, and Zn2+ ions was evaluated. The adsorption kinetics of metal ions was well fitted by the pseudo-second-order model. The adsorption rate decreased followed in the order of Cu2+ > Pb2+ > Zn2+, consistent with the reduction potential of the ions. The sorption isotherm was well fitted by Langmuir model. The maximum adsorption capacity decreased followed in the order of Pb2+ > Cu2+ > Zn2+, which suggested that the strength of covalent bonds between the metal ions and surface functional groups substituted to the beads is one of the major factors in the adsorption process. Adsorption increased with the increase of pH and the largest sorption occurred at pH 5.5, while ionic strength did not significantly influence the adsorption process. The application of PPG-nZVI beads as filling materials in the simulated stormwater infiltration facility shows good removal efficiency in treating the contaminated water containing Pb2+, Cu2+, Zn2+, Cr6+, and Cd2+ and the removal rate was more than 65% at least. The results indicated that the PPG-nZVI beads could be applied as promising sorbents for purification of heavy metal contaminated water.
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12
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Nanoscale zero-valent iron modified with carboxymethyl cellulose in an impinging stream-rotating packed bed for the removal of lead(II). ADV POWDER TECHNOL 2019. [DOI: 10.1016/j.apt.2019.07.005] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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13
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Aghaei M, Kianfar AH, Dinari M. Green synthesis of nanostructure Schiff base complex based on aromatic polyamide and manganese(III) for elimination of Hg(II) and Cd(II) from solutions. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2019. [DOI: 10.1007/s13738-019-01719-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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14
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Jamshidi P, Shemirani F. Adsorption and desorption of Pb2+ on magnetic Mn2O3 as highly efficient adsorbent: Isotherm, kinetic and thermodynamic studies. Colloids Surf A Physicochem Eng Asp 2019. [DOI: 10.1016/j.colsurfa.2019.02.043] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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15
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Liu Y, Gao Q, Pu S, Wang H, Xia K, Han B, Zhou C. Carboxyl-functionalized lotus seedpod: A highly efficient and reusable agricultural waste-based adsorbent for removal of toxic Pb2+ ions from aqueous solution. Colloids Surf A Physicochem Eng Asp 2019. [DOI: 10.1016/j.colsurfa.2019.02.017] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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A novel magnetic biochar/MgFe-layered double hydroxides composite removing Pb2+ from aqueous solution: Isotherms, kinetics and thermodynamics. Colloids Surf A Physicochem Eng Asp 2019. [DOI: 10.1016/j.colsurfa.2019.01.064] [Citation(s) in RCA: 80] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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17
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Achazhiyath Edathil A, Hisham Zain J, Abu Haija M, Banat F. Scalable synthesis of an environmentally benign graphene–sand based organic–inorganic hybrid for sulfide removal from aqueous solution: an insight into the mechanism. NEW J CHEM 2019. [DOI: 10.1039/c8nj05301d] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this study, a graphene–sand hybrid (GSH) was successfully synthesized from locally available desert sand and sugar using a green chemistry approach and used as an adsorbent for the removal of dissolved sulfides from aqueous solutions.
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Affiliation(s)
| | - Jerina Hisham Zain
- Department of Chemical Engineering, Khalifa University – SAN Campus Abu Dhabi
- United Arab Emirates
| | - Mohammad Abu Haija
- Department of Chemical Engineering, Khalifa University – SAN Campus Abu Dhabi
- United Arab Emirates
| | - Fawzi Banat
- Department of Chemical Engineering, Khalifa University – SAN Campus Abu Dhabi
- United Arab Emirates
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18
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Boubakri S, Djebbi MA, Bouaziz Z, Namour P, Ben Haj Amara A, Ghorbel-Abid I, Kalfat R. Nanoscale zero-valent iron functionalized Posidonia oceanica marine biomass for heavy metal removal from water. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:27879-27896. [PMID: 28988320 DOI: 10.1007/s11356-017-0247-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2017] [Accepted: 09/19/2017] [Indexed: 06/07/2023]
Abstract
Because of the excellent reducing capacity of nanoscale zero-valent iron (NZVI), it can be used as alternative materials for the removal of a variety of reducible water contaminants including toxic metals. The current paper reports the research results obtained for self-prepared biosorbent, Posidonia oceanica biomass, activated in alkaline medium and functionalized with NZVI particles. The structural characteristics, surface morphology, and binding properties of the resulting nanobiosorbent are presented. Batch comparative adsorption trials including adsorption kinetics and isothermals onto raw Posidonia, Posidonia-OH and Posidonia-OH-NZVI were investigated on three heavy metal ions: Cd(II), Pb(II), and Cu(II). The nanobiosorbent showed better properties, such as high reactivity and high uptake rate through the sorption process. The toxic metal removal has been monitored in terms of pseudo-first- and pseudo-second-order kinetics, and both Langmuir- and Freundlich-type isotherm models have been used to describe the sorption mechanism. The experimental data of all studied systems showed that the uptake kinetics follow the pseudo-second-order kinetic model and the equilibrium uptake can adopt the Langmuir-type isotherm model which assumes a monolayer coverage as the adsorption saturates and no further adsorption occurs. The thermodynamic results confirm that all sorption processes were feasible, spontaneous and thermodynamically favorable. Zeta potential data displayed that Cd(II), Pb(II), and Cu(II) tend to be reduced after exposure on the Posidonia-OH-NZVI surface. Furthermore, sorption competitions of the metals from binary and ternary systems were carried out onto Posidonia-OH-NZVI in order to gain further insight into the sorption efficiency of this material. Therefore, as a result, the proposed new nanobiosorbent could offer potential benefits in remediation of heavy metal-contaminated water as a green and environmentally friendly bionanocomposite.
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Affiliation(s)
- Saber Boubakri
- Laboratoire Matériaux, Traitement et Analyse, Institut National de Recherche et d'Analyse Physico-chimique, BiotechPole Sidi-Thabet, 2020, Ariana, Tunisia
- Laboratoire des Applications de la Chimie aux Ressources et Substances Naturelles et a l'Environnement, Universite de Carthage, Faculté des Sciences de Bizerte, 7021, Zarzouna, Tunisia
| | - Mohamed Amine Djebbi
- Laboratoire de Physique des Materiaux Lamellaires et Nanomatériaux Hybrides, Faculte des Sciences de Bizerte, Université de Carthage, 7021, Zarzouna, Tunisia.
- Institut des Sciences Analytiques UMR CNRS 5280, Université de Lyon, 5 rue de la Doua, 69100, Villeurbanne, France.
- Irstea, Université de Lyon, 5 rue de la Doua, 69100, Villeurbanne, France.
| | - Zaineb Bouaziz
- Laboratoire de Physique des Materiaux Lamellaires et Nanomatériaux Hybrides, Faculte des Sciences de Bizerte, Université de Carthage, 7021, Zarzouna, Tunisia
| | - Philippe Namour
- Irstea, Université de Lyon, 5 rue de la Doua, 69100, Villeurbanne, France
| | - Abdesslem Ben Haj Amara
- Laboratoire de Physique des Materiaux Lamellaires et Nanomatériaux Hybrides, Faculte des Sciences de Bizerte, Université de Carthage, 7021, Zarzouna, Tunisia
| | - Ibtissem Ghorbel-Abid
- Laboratoire Matériaux, Traitement et Analyse, Institut National de Recherche et d'Analyse Physico-chimique, BiotechPole Sidi-Thabet, 2020, Ariana, Tunisia
| | - Rafik Kalfat
- Laboratoire Matériaux, Traitement et Analyse, Institut National de Recherche et d'Analyse Physico-chimique, BiotechPole Sidi-Thabet, 2020, Ariana, Tunisia
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19
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Dinari M, Haghighi A. Efficient removal of hexavalent chromium and lead from aqueous solutions by s-triazine containing nanoporous polyamide. POLYM ADVAN TECHNOL 2017. [DOI: 10.1002/pat.4040] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Mohammad Dinari
- Department of Chemistry; Isfahan University of Technology; Isfahan 84156-83111 Iran
| | - Atefeh Haghighi
- Department of Chemistry; Isfahan University of Technology; Isfahan 84156-83111 Iran
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