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Dai N, Liu X, Yang L, Huang X, Song D, Wang S, Zhang K, Liu X, Dong W, Zhang Y. Cetyltrimethylammonium Bromide-Modified Laponite@Diatomite Composites for Enhanced Adsorption Performance of Organic Pollutants. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:8427-8439. [PMID: 38607689 DOI: 10.1021/acs.langmuir.3c03938] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/14/2024]
Abstract
This work aims to enhance the adsorption performance of Laponite @diatomite for organic pollutants by modifying it with cetyltrimethylammonium bromide (CTAB). The microstructure and morphology of the CTAB-modified Laponite @diatomite material were characterized using SEM, XRD, FTIR, BET, and TG. Furthermore, the influences of key parameters, containing pH, adsorbent dosage, reaction time, and reaction temperature, on the adsorption process were investigated. The kinetics, thermodynamics, and isotherm models of the adsorption process were analyzed. Finally, potential adsorption mechanisms were given based on the characterization. The research findings indicate that CTAB-La@D exhibits good adsorption performance toward Congo red (CR) over a broad pH range. The maximum adsorption capacity of CR was 451.1 mg/g under the optimum conditions (dosage = 10 mg, contact time = 240 min, initial CR concentration = 100 mg/L, temperature = 25 °C, and pH = 7). The adsorption process conformed to the pseudo-second-order kinetic model, and the adsorption isotherms indicated that the adsorption process of CR was more in line with the Langmuir model, and it was physical adsorption. Thermodynamic analysis illustrates that the adsorption process is exothermic and spontaneous. Additionally, the mechanisms of electrostatic adsorption and hydrophobic effect adsorption of CR were investigated through XPS and FTIR analysis. This work provides an effective pathway for designing high-performance adsorbents for the removal of organic dye, and the synthesized materials hold great capability for practical utilization in the treatment of wastewater.
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Affiliation(s)
- Nan Dai
- College of Materials Science and Engineering, Chongqing University, Chongqing 400044, PR China
| | - Xinyi Liu
- College of Materials Science and Engineering, Chongqing University, Chongqing 400044, PR China
| | - Lei Yang
- Department of Chemistry, Fudan University, Shanghai 200438, PR China
| | - Xi Huang
- College of Chemistry, Chongqing Normal University, Chongqing 400047, PR China
| | - Dan Song
- Chongqing Academy of Eco-Environmental Sciences, Chongqing 401147, PR China
| | - Song Wang
- College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518060, PR China
| | - Kai Zhang
- Chongqing Academy of Agricultural Sciences, Chongqing 401329, PR China
| | - Xiaoying Liu
- Army Logistics Academy of PLA, Chongqing 401331, PR China
| | - Wenxin Dong
- School of Resources and Safety Engineering, Chongqing University, Chongqing 400044, PR China
| | - Yuxin Zhang
- College of Materials Science and Engineering, Chongqing University, Chongqing 400044, PR China
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Wang H, Wang W, Zhang G, Gao X. Research on the performance of modified blue coke in adsorbing hexavalent chromium. Sci Rep 2023; 13:7223. [PMID: 37142630 PMCID: PMC10160119 DOI: 10.1038/s41598-023-34381-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Accepted: 04/28/2023] [Indexed: 05/06/2023] Open
Abstract
To solve the issue of hexavalent chromium (Cr(VI)) contamination in water bodies, blue coke powder (LC) was chemically changed using potassium hydroxide to create the modified material (GLC), which was then used to treat a Cr(VI)-containing wastewater solution. The differences between the modified and unmodified blue coke's adsorption characteristics for Cr(VI) were studied, and the impact of pH, starting solution concentration, and adsorption period on the GLC's adsorption performance was investigated. The adsorption behavior of the GLC was analyzed using isothermal adsorption models, kinetic models, and adsorption thermodynamic analysis. The mechanism of Cr(VI) adsorption by the GLC was investigated using characterization techniques such as Fourier Transform Infrared Spectroscopy (FTIR), Field Emission Scanning Electron Microscope (FE-SEM), X-Ray Diffraction (XRD), and X-Ray Photoelectron Spectroscopy (XPS). With the biggest difference in removal rate at pH = 2, which was 2.42 times that of LC, batch adsorption experiments revealed that, under the same adsorption conditions, the GLC always performed better than LC. With a specific surface area that was three times that of LC and an average pore diameter that was 0.67 times that of LC, GLC had a more porous structure than LC. The alteration significantly increased the number of hydroxyls on the surface of GLC by altering the structural makeup of LC. The ideal pH for removing Cr(VI) was 2, and the ideal GLC adsorbent dosage was 2.0 g/L. Pseudo-second-order kinetic (PSO) model and Redlich-Peterson (RP) model can effectively describe the adsorption behavior of GLC for Cr(VI). Physical and chemical adsorption work together to remove Cr(VI) by GLC in a spontaneous, exothermic, and entropy-increasing process, with oxidation-reduction processes playing a key role. GLC is a potent adsorbent that can be used to remove Cr(VI) from aqueous solutions.
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Affiliation(s)
- Hua Wang
- College of Chemistry and Chemical Engineering, Yulin University, Chongwen Road No. 51, Yulin, 719000, Shaanxi, China.
- Shaanxi Provincial Key Laboratory of Clean Utilization of Low-Modified Coal, Yulin University, Yulin, 719000, China.
| | - Wencheng Wang
- College of Chemistry and Chemical Engineering, Yulin University, Chongwen Road No. 51, Yulin, 719000, Shaanxi, China
| | - Guotao Zhang
- College of Chemistry and Chemical Engineering, Yulin University, Chongwen Road No. 51, Yulin, 719000, Shaanxi, China
| | - Xuchun Gao
- College of Chemistry and Chemical Engineering, Yulin University, Chongwen Road No. 51, Yulin, 719000, Shaanxi, China
- Shaanxi Provincial Key Laboratory of Clean Utilization of Low-Modified Coal, Yulin University, Yulin, 719000, China
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Wang L, Hu C, Yang Z, Guo S, Zhang T, Li S. Simple Co-Precipitation of Iron Minerals for the Removal of Phenylarsonic Acid: Insights into the Adsorption Performance and Mechanism. Molecules 2023; 28:molecules28083448. [PMID: 37110683 PMCID: PMC10145160 DOI: 10.3390/molecules28083448] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Revised: 03/25/2023] [Accepted: 04/04/2023] [Indexed: 04/29/2023] Open
Abstract
In this study, three kinds of iron minerals, ferrihydrite, hematite, and goethite, were prepared by a simple coprecipitation method for the adsorption and removal of phenylarsonic acid (PAA). The adsorption of PAA was explored, and the influences of ambient temperature, pH, and co-existing anions on adsorption were evaluated. The experimental results show that rapid adsorption of PAA occurs within 180 min in the presence of iron minerals, and the adsorption process conforms to a pseudo-second-order kinetic model. The isothermal adsorption of PAA by ferrihydrite, goethite, and hematite agrees with the Redlich-Peterson model. The maximum adsorption capacities of PAA are 63.44 mg/g, 19.03 mg/g, and 26.27 mg/g for ferrihydrite, goethite, and hematite, respectively. Environmental factor experiments illustrated that an alkaline environment will significantly inhibit the adsorption of PAA by iron minerals. CO32-, SiO32-, and PO43- in the environment will also significantly reduce the adsorption performance of the three iron minerals. The adsorption mechanism was analyzed by FTIR and XPS, which indicated that ligand exchange between the surface hydroxyl group and the arsine group leads to the formation of an Fe-O-As bond, and electrostatic attraction between the iron minerals and PAA played an important role in the adsorption.
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Affiliation(s)
- Lili Wang
- Petroleum Exploration and Production Research Institute, SINOPEC, Beijing 100083, China
| | - Changchao Hu
- Petroleum Exploration and Production Research Institute, SINOPEC, Beijing 100083, China
| | - Ze Yang
- Department of Environmental Science and Engineering, Research Centre for Resource and Environment, Beijing University of Chemical Technology, Beijing 100029, China
| | - Songding Guo
- Department of Environmental Science and Engineering, Research Centre for Resource and Environment, Beijing University of Chemical Technology, Beijing 100029, China
| | - Tingting Zhang
- Department of Environmental Science and Engineering, Research Centre for Resource and Environment, Beijing University of Chemical Technology, Beijing 100029, China
| | - Shangyi Li
- Department of Environmental Science and Engineering, Research Centre for Resource and Environment, Beijing University of Chemical Technology, Beijing 100029, China
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Tao D, Tian C, Zhou Y, Pei L, Zhang F. Effective removal of brilliant green with magnetic barium phosphate composites: factor analysis and mechanism study. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:50364-50375. [PMID: 36795211 DOI: 10.1007/s11356-023-25819-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2022] [Accepted: 02/05/2023] [Indexed: 04/16/2023]
Abstract
In this work, magnetic barium phosphate (FBP) composites with different content of commercial Fe3O4 nanoparticles were easily prepared by a one-step hydrothermal method. FBP composites with a magnetic content of 3% (FBP3) were studied as the example for the removal of an organic pollutant (Brilliant Green, BG) from the synthetic medium. The adsorption study was executed under the variation of different experimental conditions, such as solution pH (5 ~ 11), dosage (0.02 ~ 0.20 g), temperature (293 ~ 323 K), and the contact time (0 ~ 60 min) on the removal of BG. For comparison purposes, the one-factor-at-a-time (OFAT) approach and Doehlert matrix (DM) were both employed to investigate the factor impacts involved. FBP3 showed a high adsorption capacity of 1419.3 ± 10.0 mg/g for at 25 °C and pH = 6.31. The kinetics study revealed the pseudo-second-order kinetic model as the best-fitted model, and the thermodynamic data fit well with the Langmuir model. The possible adsorption mechanisms involved are the electrostatic interaction and/or hydrogen bonding of PO43-…N+/C-H and HSO4-…Ba2+ between FBP3 and BG. Furthermore, FBP3 showed good easy reusability and high capacities for BG removal. Our results provide new insights for developing low-cost, efficient, and reusable adsorbent to remove BG from industrial wastewater.
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Affiliation(s)
- Dan Tao
- College of Science, Nanjing Agricultural University, Nanjing, 210095, China
| | - Chengxuan Tian
- College of Science, Nanjing Agricultural University, Nanjing, 210095, China
| | - Yuxin Zhou
- College of Science, Nanjing Agricultural University, Nanjing, 210095, China
| | - Luyao Pei
- College of Science, Nanjing Agricultural University, Nanjing, 210095, China
| | - Fan Zhang
- College of Science, Nanjing Agricultural University, Nanjing, 210095, China.
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Liu Y, Chen Z, Yin X, Chen Y, Liu Y, Yang W. Selective and efficient removal of As(V) and As(III) from water by resin-based hydrated iron oxide. J Mol Struct 2023. [DOI: 10.1016/j.molstruc.2022.134361] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Zhang J, Xie L, Ma Q, Liu Y, Li J, Li Z, Li S, Zhang T. Ball milling enhanced Cr(VI) removal of zero-valent iron biochar composites: Functional groups response and dominant reduction species. CHEMOSPHERE 2023; 311:137174. [PMID: 36368528 DOI: 10.1016/j.chemosphere.2022.137174] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Revised: 11/01/2022] [Accepted: 11/05/2022] [Indexed: 06/16/2023]
Abstract
Zero-valent iron biochar composites (ZVI/BC) have been widely used to remove Cr(VI) from water. However, the application of ZVI/BC prepared by the carbothermal reduction was limited by the non-uniform dispersion of ZVI on the biochar surface. In this work, ball milling technique was introduced to modify ZVI/BC. Results showed that after ball milling, the maximum Langmuir adsorption capacity for Cr(VI) was 117.7 mg g-1 (298 K) which was 2.08 times higher than ZVI/BC. The initial adsorption rate of the Elovich model increased from 4.57 × 102 mg g-1 min-1 to 3.74 × 109 mg g-1 min-1 after ball milling. Dispersibility of ZVI on biochar surface and contact between ZVI and biochar were improved by the ball milling, thus accelerating the electron transfer. Besides, ball milling increased the content of oxygen-containing functional groups in biochar, contributing to the chemisorption of Cr(VI). The response sequence of oxygen-containing functional groups was analyzed by two-dimensional correlation spectroscopy, indicating that Cr(VI) preferentially complexed with phenolic -OH. Shielding experiments showed that Fe (0) was the dominant reducing species with a contribution of 73.4%, followed by surface-bound Fe(II) (21.3%) and dissolved Fe2+ (5.24%). Density functional theory calculations demonstrated that ball milled ZVI/BC improved the adsorption affinity and electron transfer flux towards Cr(VI) by introducing phenolic -OH and Fe (0). Combining all the textural characterization, the Cr(VI) removal mechanism of the ball milled ZVI/BC could be proposed as adsorption, reduction, and precipitation. Eventually, stable Cr-Fe oxides (FeOCr2O3 and Cr1·3Fe0·7O3) were formed. This work not only provides a simple method to modify ZVI/BC to remove Cr(VI) in water efficiently and rapidly, but also improves the mechanistic insight into the Cr(VI) removal by iron-carbon composites via the response sequence of functional group analysis and the quantitative analysis of reducing species.
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Affiliation(s)
- Jinlan Zhang
- Department of Environmental Science and Engineering, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Lihong Xie
- Department of Environmental Science and Engineering, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Qiyan Ma
- Department of Environmental Science and Engineering, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Yiyang Liu
- Department of Environmental Science and Engineering, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Jie Li
- Department of Environmental Science and Engineering, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Zhifeng Li
- Department of Environmental Science and Engineering, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Shangyi Li
- Department of Environmental Science and Engineering, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Tingting Zhang
- Department of Environmental Science and Engineering, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China.
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Huan Z, Zhang J, Guo P, Lin Z, Li J, Li Z, Zhao W, Cao S, Zhu Y, Zhang T. Application of iron oxyhydroxide to stabilize As(V) and phenylarsonic acid in contaminated soil: adsorption and the relevance to bioavailability. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:76144-76157. [PMID: 35666420 DOI: 10.1007/s11356-022-20646-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Accepted: 05/02/2022] [Indexed: 06/15/2023]
Abstract
The leaked arsenic-containing chemical warfare agent has caused severe contamination to the surrounding soil and water. In this study, iron oxyhydroxide (FeOOH) with different crystalline phases was used to stabilize arsenic. The results revealed that α/β- mixed crystalline iron oxyhydroxide (MIX-FeOOH) had better adsorption performance for As(V) and phenylarsonic acid (PAA) in water, with the adsorption capacity 71.4 and 54.7 mg g-1 at 50 mg L-1 equilibrium concentration, respectively. The adsorption mechanism was proved to be inner-sphere complexation, electrostatic interaction, and hydrogen bonding. Meanwhile, the oxygen vacancies on FeOOH could increase the isoelectric point and further promote the adsorption capacity through inner-sphere complexation. In arsenic contaminated soil, when the addition amount of MIX-FeOOH was 5%, the bioavailability of arsenic in As(V) and PAA contaminated soil was significantly reduced after 28 days, and the stabilization rate reached 77.2% and 76.5%, respectively. After 7 days of remediation, 17.1% and 11.9% of the most mobile portions of As(V) and PAA could be converted into poorly mobile portions, respectively. The stabilization mechanism includes inner-sphere complexation, mineral adsorption, and coprecipitation. In summary, this study can provide technical support for the remediation practice of arsenic-containing warfare agent contaminated sites.
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Affiliation(s)
- Zhenglai Huan
- State Key Laboratory of NBC Protection for Civilian, Beijing, 102205, China
- Department of Environmental Science and Engineering, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Jinlan Zhang
- Department of Environmental Science and Engineering, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Pengfei Guo
- Department of Environmental Science and Engineering, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Zuhong Lin
- State Key Laboratory of NBC Protection for Civilian, Beijing, 102205, China
- Department of Environmental Science and Engineering, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Jie Li
- Department of Environmental Science and Engineering, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Zhifeng Li
- Department of Environmental Science and Engineering, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Wenjing Zhao
- Department of Environmental Science and Engineering, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Shengbin Cao
- Department of Environmental Science and Engineering, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Yongbing Zhu
- State Key Laboratory of NBC Protection for Civilian, Beijing, 102205, China
| | - Tingting Zhang
- Department of Environmental Science and Engineering, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing, 100029, China.
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