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Huang X, Zhu J, Li Q, Wei X, Yang Z, Yang W, Liao Q, Si M, Wang Q. Efficient mineralization of cadmium and arsenic by poorly crystalline CaFe-layered double hydroxide in soil: Performance and mechanism. ENVIRONMENTAL RESEARCH 2024; 262:119994. [PMID: 39276828 DOI: 10.1016/j.envres.2024.119994] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2024] [Revised: 09/06/2024] [Accepted: 09/11/2024] [Indexed: 09/17/2024]
Abstract
The co-contamination of arsenic (As) and cadmium (Cd) in the environment is of most concern. In this work, poorly crystalline CaFe-layered double hydroxide (CaFe-LDH) was synthesized with a Ca-to-Fe molar ratio of 4 to ensure effective immobilization of Cd and As in soil. The application of Ca4Fe-LDH in soil remediation demonstrated that the targeted heavy metals gradually mineralized into a relatively stable oxidizable and residual state. At a soil remediation dosage of 1.6%, the availability levels of Cd and As decreased significantly, achieving stabilization efficiencies of 99% and 85.2% respectively. Cd is trapped through isomorphic substitution and dissolution-reprecipitation of calcium (Ca) laminate, resulting in the formation of CdCaFe-LDH mineralization products. As is immobilized through ion exchange with interlayer anions, redox with Fe(III), and Fe-Cd-As complexation. Moreover, the results of the characterization and density functional theoretical (DFT) calculations demonstrate that the CdCaFe-LDH formed by isomeric substitution of Ca for Cd enhanced the adsorption of As on the (110) plane of LDH, indicating that the trap mechanism of Cd and As by Ca4Fe-LDH is synergistically promoted. Overall, the above results prove that mineralization using Ca4Fe-LDH is a promising method to remediate soils combined contaminated by both Cd and As.
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Affiliation(s)
- Xiaofeng Huang
- School of Metallurgy and Environment, Central South University, Changsha, 410083, China
| | - Jian Zhu
- Hunan Institute of Agri-Environment and Ecology, Changsha, 410125, China
| | - Qingzhu Li
- School of Metallurgy and Environment, Central South University, Changsha, 410083, China; National Engineering Research Centre for Control and Treatment of Heavy Metal Pollution, Central South University, Changsha, 410083, China; State Key Laboratory of Advanced Metallurgy for Non-ferrous Metals, Changsha, 410083, China.
| | - Xiaohua Wei
- School of Metallurgy and Environment, Central South University, Changsha, 410083, China
| | - Zhihui Yang
- School of Metallurgy and Environment, Central South University, Changsha, 410083, China; National Engineering Research Centre for Control and Treatment of Heavy Metal Pollution, Central South University, Changsha, 410083, China; State Key Laboratory of Advanced Metallurgy for Non-ferrous Metals, Changsha, 410083, China
| | - Weichun Yang
- School of Metallurgy and Environment, Central South University, Changsha, 410083, China; National Engineering Research Centre for Control and Treatment of Heavy Metal Pollution, Central South University, Changsha, 410083, China; State Key Laboratory of Advanced Metallurgy for Non-ferrous Metals, Changsha, 410083, China
| | - Qi Liao
- School of Metallurgy and Environment, Central South University, Changsha, 410083, China; National Engineering Research Centre for Control and Treatment of Heavy Metal Pollution, Central South University, Changsha, 410083, China; State Key Laboratory of Advanced Metallurgy for Non-ferrous Metals, Changsha, 410083, China
| | - Mengying Si
- School of Metallurgy and Environment, Central South University, Changsha, 410083, China; National Engineering Research Centre for Control and Treatment of Heavy Metal Pollution, Central South University, Changsha, 410083, China; State Key Laboratory of Advanced Metallurgy for Non-ferrous Metals, Changsha, 410083, China
| | - Qingwei Wang
- School of Metallurgy and Environment, Central South University, Changsha, 410083, China; National Engineering Research Centre for Control and Treatment of Heavy Metal Pollution, Central South University, Changsha, 410083, China; State Key Laboratory of Advanced Metallurgy for Non-ferrous Metals, Changsha, 410083, China
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Zhang D, Liu Z. Employing dolomite as magnesium source to prepare calcined layered double hydroxides for chromium contaminated soil treatment: Exploring the influence of temperature, bioavailability, and microbial diversity. Heliyon 2024; 10:e34664. [PMID: 39170300 PMCID: PMC11336319 DOI: 10.1016/j.heliyon.2024.e34664] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2024] [Revised: 06/24/2024] [Accepted: 07/15/2024] [Indexed: 08/23/2024] Open
Abstract
Layered double hydroxides (LDH-D) and their calcined counterparts, using dolomite as a source of magnesium, were utilized for the immobilization of chromium (Cr(VI)) in soil. The results indicate that LDH-D, both with and without varying calcination temperatures, can effectively immobilize Cr(VI) in soil. Among the different calcination temperatures tested, LDH-D subjected to calcination at 500 °C (LDH-D-500) showed particularly high efficacy. Long-term TCLP experiments demonstrated the inhibition of soil-to-plant transmission of Cr(VI), thereby highlighting the long-lasting immobilization capacity of LDH-D and its calcined derivatives. Furthermore, the analysis of the microbial community's adaptation in post-remediation soil confirmed the durability and bioavailability of LDH-D-500 for Cr immobilization. Examination of the material's morphology and structure after immobilization shed light on the mechanism of immobilization in soil. The results revealed that interlayer anion exchange and surface adsorption were the main factors responsible for the effective immobilization of LDH-D and LDH-D-300. On the other hand, LDH-D-900, with a dominant spinel (MgAl2O4) structure, faced challenges in returning to its original layered configuration, making surface adsorption the primary mechanism for immobilization. LDH-D-500 primarily relied on the structure memory effects of LDHs to immobilize Cr(VI) through structural recovery processes, facilitated by electrostatic attraction and surface adsorption. It is also important to note that CaCO3 plays an important role in adsorption. Additionally, a portion of Cr(VI) was converted to Cr(III) through phenomena such as isomer substitution and complexation adsorption. The proficiency of LDH-D-500 in immobilizing Cr, its ability for instantaneous separation, and the potential for regeneration make it a promising material for remediation of heavy metal-contaminated soil. The investigations suggest that the use of dolomite to create hydrotalcite and calcining it at 500 °C could effectively render environmental Cr inactive, thereby optimizing resource utilization.
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Affiliation(s)
- Donghua Zhang
- Department of Mining Engineering, College of Mining Engineering, Taiyuan University of Technology, Taiyuan, 030024, China
| | - Zhimeng Liu
- Shanxi Coal Institute of Planing &design (group) Co.,ltd., Taiyuan, 030024, China
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Xie YL, Ye FP, Zhao SQ. Preparation of magnetic Co–Fe layered double hydroxides and its adsorption properties for the removal of methyl orange. JOURNAL OF CHEMICAL RESEARCH 2023. [DOI: 10.1177/17475198221150382] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
In this study, Co–Fe layered double hydroxides are prepared by a hydrothermal method. The Co–Fe layered double hydroxides are used as an adsorbent for the investigation of the thermodynamic parameters and adsorption kinetics of methyl orange from aqueous solution. The results show that adsorption is affected by adsorbent dosage, adsorption time, and temperature. The characteristics of samples are investigated using X-ray powder diffraction, scanning electron microscopy, Fourier-transform infrared spectroscopy, and N2 adsorption–desorption isotherms. The adsorption saturation level of Co–Fe layered double hydroxides on methyl orange is studied, with the results showing that the maximum uptake capacity for methyl orange is 10.21 mg g−1 based on Co–Fe layered double hydroxides. The adsorption kinetics of methyl orange is consistent with the Temkin isotherm equation and quasi-secondary kinetic model. Furthermore, separation is easily accomplished under the action of an applied magnetic field. The prepared Co–Fe layered double hydroxides can be applied as an effective adsorbent for decontamination of anionic dyes in industrial effluents.
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Affiliation(s)
- Yu-Long Xie
- Qinghai Provincial Key Laboratory of Nanomaterials and Nanotechnology, School of Chemistry and Chemical Engineering, Qinghai Minzu University, Xining, P.R. China
| | - Fa-Ping Ye
- Qinghai Provincial Key Laboratory of Nanomaterials and Nanotechnology, School of Chemistry and Chemical Engineering, Qinghai Minzu University, Xining, P.R. China
| | - Su-Qin Zhao
- Qinghai Provincial Key Laboratory of Nanomaterials and Nanotechnology, School of Physics and Electronic Information Engineering, Qinghai Minzu University, Xining, P.R. China
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Wang H, Yuan J, Zhu Z, Wang H, Wang L. A novel sustainable strategy of upcycled waste polyphenylene sulfide filter bag: From waste polyphenylene sulfide powder to char‐forming agent for flame retardant epoxy. J Appl Polym Sci 2022. [DOI: 10.1002/app.53543] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Hao Wang
- College of Materials Science and Engineering, State Key Laboratory of New Textile Materials and Advanced Processing Technologies Wuhan Textile University Wuhan People's Republic of China
| | - Jun Yuan
- College of Materials Science and Engineering, State Key Laboratory of New Textile Materials and Advanced Processing Technologies Wuhan Textile University Wuhan People's Republic of China
| | - Zongmin Zhu
- College of Materials Science and Engineering, State Key Laboratory of New Textile Materials and Advanced Processing Technologies Wuhan Textile University Wuhan People's Republic of China
| | - Hua Wang
- College of Materials Science and Engineering, State Key Laboratory of New Textile Materials and Advanced Processing Technologies Wuhan Textile University Wuhan People's Republic of China
| | - Luoxin Wang
- College of Materials Science and Engineering, State Key Laboratory of New Textile Materials and Advanced Processing Technologies Wuhan Textile University Wuhan People's Republic of China
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Liang D, Xia C, Huang H, Liu Y, Ma Z, Li S, Zhang Q, Meng Z. Weed control and slow-release behavior of 2-methyl-4-chlorophenoxyacetate intercalated layered double hydroxide. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.130661] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Che J, Zhang W, Ma B, Chen Y, Wang L, Wang C. A shortcut approach for cooperative disposal of flue dust and waste acid from copper smelting: Decontamination of arsenic-bearing waste and recovery of metals. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 843:157063. [PMID: 35780900 DOI: 10.1016/j.scitotenv.2022.157063] [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: 04/22/2022] [Revised: 06/03/2022] [Accepted: 06/26/2022] [Indexed: 06/15/2023]
Abstract
Recovering harmful elements (As, Pb) and metals (Cu, Bi, Zn) from copper smelting flue dust (CSFD) is a critical subject and task for arsenic contamination control and resource sustainability. In this work, a two-step pyrometallurgical process was developed to preferentially separate arsenic and recover metals from CSFD. During the low-temperature roasting, arsenic-bearing waste acid (AWA) from copper industry was used as an additive and effective removal of arsenic (97.8 %) was obtained at 350 °C, which follows the idea of "treating waste with waste". Subsequently, the recovery and separation of metals were well-achieved based on the affinity between metals and sulfur in the second stage of roasting, by which 91.28 % of Pb and 95.65 % of Bi were recovered as an alloy (Pb 86.48 %, Bi 13.21 %), while 82.62 % of Cu was enriched in the matte. The migration rules of metal elements and phase transformation in the whole process were studied in-depth from theory and experiments. This process can realize the efficient removal of arsenic as well as effective recovery of metals via cooperative disposal of CSFD and AWA, and minimize the environmental impacts.
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Affiliation(s)
- Jianyong Che
- State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing 100083, China; School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Wenjuan Zhang
- State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing 100083, China; School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China; Department of Materials Engineering, The University of British Columbia, Vancouver, BC V6T 1Z4, Canada.
| | - Baozhong Ma
- State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing 100083, China; School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Yongqiang Chen
- State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing 100083, China; School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Ling Wang
- State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing 100083, China; School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Chengyan Wang
- State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing 100083, China; School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China.
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Self-assembled perylene diimide modified NH2-UiO-66 (Zr) construct n-n heterojunction catalysts for enhanced Cr (VI) photocatalytic reduction. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.121423] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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8
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Maamoun I, Bensaida K, Eljamal R, Falyouna O, Tanaka K, Tosco T, Sugihara Y, Eljamal O. Rapid and efficient chromium (VI) removal from aqueous solutions using nickel hydroxide nanoplates (nNiHs). J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.119216] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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Single and competitive adsorption between Indigo Carmine and Methyl orange dyes on quaternized kapok fiber adsorbent prepared by radiation technique. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.121103] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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Zhang L, He F, Guan Y. Immobilization of hexavalent chromium in contaminated soil by nano-sized layered double hydroxide intercalated with diethyldithiocarbamate: Fraction distribution, plant growth, and microbial evolution. JOURNAL OF HAZARDOUS MATERIALS 2022; 430:128382. [PMID: 35739652 DOI: 10.1016/j.jhazmat.2022.128382] [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: 11/05/2021] [Revised: 01/10/2022] [Accepted: 01/26/2022] [Indexed: 06/15/2023]
Abstract
Soil contamination by hexavalent chromium (Cr(VI)) poses great risks to human health and ecosystem safety. We introduced a new cheap and efficient layered double hydroxide intercalated with diethyldithiocarbamate (DDTC-LDH) for in-situ remediation of Cr(VI)-contaminated soil. The content of Cr(VI) in contaminated soil (134.26 mg kg-1) was rapidly reduced to 1.39 mg kg-1 within 10 days by 0.5% of DDTC-LDH. This result attains to or even exceeds the effectiveness of most of reported soil amendments for Cr(VI) removal in soils. The production cost of DDTC-LDH ($4.02 kg-1) was relatively low than some common materials, such as nano zero-valent iron ($22.80-140.84 kg-1). The growth of water spinach became better with the increase of DDTC-LDH dose from 0% to 0.5%, suggesting the recovery of soil function. DDTC-LDH significantly altered the structure and function of soil microbial communities. The species that have Cr(VI)-resistant or Cr(VI)-reductive ability were enriched in DDTC-LDH remediated soils. Network analysis revealed a significant functional niche differentiation of soil microbial communities. In addition to the enhancement of Cr(VI) reduction, the stimulation of plant growth promoting traits, including siderophore biosynthesis, oxidation resistance to reactive oxygen species, and phosphorus availability by DDTC-LDH was another essential mechanism for the immediate remediation of Cr(VI)-contaminated soil.
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Affiliation(s)
- Lixun Zhang
- Guangdong Provincial Engineering Technology Research Center for Urban Water Cycle and Water Environment Safety, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, PR China
| | - Fangxin He
- Guangdong Provincial Engineering Technology Research Center for Urban Water Cycle and Water Environment Safety, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, PR China
| | - Yuntao Guan
- Guangdong Provincial Engineering Technology Research Center for Urban Water Cycle and Water Environment Safety, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, PR China.
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11
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Gu S, Wang Y, Zhang D, Xiong M, Gu H, Xu Z. Utilization of porous carbon synthesized with textile wastes via calcium acetate template for tetracycline removal: The role of template agent and the formation mechanism. CHEMOSPHERE 2022; 289:133148. [PMID: 34864010 DOI: 10.1016/j.chemosphere.2021.133148] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2021] [Revised: 11/28/2021] [Accepted: 12/01/2021] [Indexed: 06/13/2023]
Abstract
A porous carbon obtained from cotton/polyester textile wastes was synthesized by the calcium acetate template method. This research studied the effect of preparation conditions and evaluated the characterization of porous carbon, and further explored its formation mechanism. The porous carbon possessed a high specific surface area of 1106.63 m2/g under an optimum condition (pyrolysis temperature = 800 °C, mass ratio of CA: CPW = 1.5:1, pyrolysis time = 1.5 h). It was found that calcium acetate played the role of catalyst to promote the degradation of cotton/polyester textile. CaCO3 and CaO fabricated by calcium acetate acted as the template to generate a mesoporous structure. The generated CO2 etched carbon skeleton to create a large number of micropores. Besides, it was supported as the carbon source to fuse with carbon structures, further consolidating the aromatic structures of porous carbon. The optimized porous carbon has a high adsorption capacity of 506.40 mg/g for tetracycline. And the adsorption data fitted better by the first-pseudo-order model and Langmuir isotherms with an endothermic and spontaneous adsorption process. The cotton/polyester-based porous carbon was a promising economical material for tetracycline.
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Affiliation(s)
- Siyi Gu
- School of Environment and Architecture, University of Shanghai for Science and Technology, 516 Jungong Rd., Shanghai, 200093, PR China
| | - Yongheng Wang
- School of Environment and Architecture, University of Shanghai for Science and Technology, 516 Jungong Rd., Shanghai, 200093, PR China
| | - Daofang Zhang
- School of Environment and Architecture, University of Shanghai for Science and Technology, 516 Jungong Rd., Shanghai, 200093, PR China.
| | - Mengmeng Xiong
- School of Environment and Architecture, University of Shanghai for Science and Technology, 516 Jungong Rd., Shanghai, 200093, PR China
| | - He Gu
- School of Environment and Architecture, University of Shanghai for Science and Technology, 516 Jungong Rd., Shanghai, 200093, PR China
| | - Zhihua Xu
- School of Environment and Architecture, University of Shanghai for Science and Technology, 516 Jungong Rd., Shanghai, 200093, PR China.
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Zheng J, Fan S, Liu S, Shen G, Si WD, Dong X, Huang X, Zhang Y, Yao Q, Li Z, Sun D. In situ ball-milling gram-scale preparation of polyoxoniobate-intercalated MgAl-layered double hydroxides for selective aldol and Michael addition cascade reactions. Inorg Chem Front 2022. [DOI: 10.1039/d2qi01167k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A facile one-step ball-milling strategy to prepare gram-scale Mg3Al-LDH-Nb6 has been demonstrated and the thus-obtained catalyst exhibited efficient selective catalytic activities in the synthesis of biologically active organic molecules in water.
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Affiliation(s)
- Jun Zheng
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry & Chemical Engineering, Liaocheng University, Liaocheng, 252059, P. R. China
| | - Shuhua Fan
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry & Chemical Engineering, Liaocheng University, Liaocheng, 252059, P. R. China
| | - Sen Liu
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry & Chemical Engineering, Liaocheng University, Liaocheng, 252059, P. R. China
| | - Guodong Shen
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry & Chemical Engineering, Liaocheng University, Liaocheng, 252059, P. R. China
| | - Wei-Dan Si
- School of Chemistry and Chemical Engineering, State Key Laboratory of Crystal Materials, Shandong University, Ji'nan, 250100, People's Republic of China
| | - Xinyi Dong
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry & Chemical Engineering, Liaocheng University, Liaocheng, 252059, P. R. China
| | - Xianqiang Huang
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry & Chemical Engineering, Liaocheng University, Liaocheng, 252059, P. R. China
| | - Yalin Zhang
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry & Chemical Engineering, Liaocheng University, Liaocheng, 252059, P. R. China
| | - Qingxia Yao
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry & Chemical Engineering, Liaocheng University, Liaocheng, 252059, P. R. China
| | - Zhen Li
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry & Chemical Engineering, Liaocheng University, Liaocheng, 252059, P. R. China
| | - Di Sun
- School of Chemistry and Chemical Engineering, State Key Laboratory of Crystal Materials, Shandong University, Ji'nan, 250100, People's Republic of China
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Mao F, Hao P, Zhu Y, Kong X, Duan X. Layered double hydroxides: Scale production and application in soil remediation as super-stable mineralizer. Chin J Chem Eng 2022. [DOI: 10.1016/j.cjche.2021.09.023] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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14
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Bian H, Wan J, Muhammad T, Wang G, Sang L, Jiang L, Wang H, Zhang Y, Peng C, Zhang W, Cao X, Lou Z. Computational study and optimization experiment of nZVI modified by anionic and cationic polymer for Cr(VI) stabilization in soil: Kinetics and response surface methodology (RSM). ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 276:116745. [PMID: 33640653 DOI: 10.1016/j.envpol.2021.116745] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/02/2021] [Revised: 02/09/2021] [Accepted: 02/11/2021] [Indexed: 06/12/2023]
Abstract
Nanoscale zero-valent iron (nZVI) modified by cationic polyquaternium-7 (M550-nZVI) or anionic carboxymethyl cellulose (CMC-nZVI) were freshly synthesized, and followed by the successful applicability for the stabilization of Cr(VI) in soil. Scanning electron microscope (SEM) showed that the sizes of M550-nZVI and CMC-nZVI were 42-170 nm and 66-200 nm, respectively. X-ray diffraction (XRD) confirmed the presence of Fe0 and Fe3C in the as-synthesized composites. The kinetics were well fitted with pseudo-second order model (R2 > 0.99), indicating that the process was principally chemical reduction. Additionally, we observed that M550-nZVI had better resistance to oxidation than that of CMC-nZVI. Besides, RSM experiments showed that acetate ion (AA) could promote the Cr(VI) removal but humic acid ion (HA) and carbonate ion (CA) resulted in negative effects. Moreover, the modeling predication revealed that the optimum Cr(VI) removal of 92.44% by CMC-nZVI was available, being 22.52% higher than that of M550-nZVI. In conclusion, this work demonstrated that the inoxidizability of M550-nZVI had a dominant advantage, while CMC-nZVI had the more excellent reactivity than M550-nZVI. We believe that our conducted research work will open the new avenues for effective removal of heavy metals from the soil.
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Affiliation(s)
- Hao Bian
- 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
| | - 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
| | - Tariq Muhammad
- Division of Advanced Nanomaterials, Suzhou Institute of Nano-tech and Nano-bionics, Chinese Academy of Sciences (CAS), Suzhou, 215123, 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
| | - Li Sang
- 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
| | - Lingling Jiang
- 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
| | - Huadong 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
| | - Yinjie 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
| | - 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 Institute of Pollution Control and Ecological Security, Shanghai, 200092, 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 Institute of Pollution Control and Ecological Security, Shanghai, 200092, China.
| | - Xinde Cao
- Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092, China; School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Ziyang Lou
- Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092, China; School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
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