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Chen X, Zhong J, Lin H, Ye Z, Wang Y, Ma X. Efficient enrichment of uranium (VI) in aqueous solution using magnesium-aluminum layered double hydroxide composite phosphate-modified hydrothermal biochar: Mechanism and adsorption. CHEMOSPHERE 2024; 362:142667. [PMID: 38906190 DOI: 10.1016/j.chemosphere.2024.142667] [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: 03/30/2024] [Revised: 06/01/2024] [Accepted: 06/18/2024] [Indexed: 06/23/2024]
Abstract
This study presents the successful synthesis of Magnesium-aluminum layered double hydroxide composite phosphate-modified hydrothermal biochar for efficient removal of U(VI) from aqueous solutions. A novel synthesis approach involving phosphate thermal polymerization-hydrothermal method was employed, deviating from conventional pyrolysis methods, to produce hydrothermal biochar. The combination of solvent thermal polymerization technique with hydrothermal process facilitated efficient loading of layered double hydroxide (LDH) components onto the biochar surface, ensuring simplicity, low energy consumption and enhanced modifiability. Bamboo waste was utilized as the precursor for biochar, highlighting its superior green and sustainable characteristics. Additionally, this study elucidated the interactions between phosphate-modified hydrothermal biochar and LDH components with U(VI). Physicochemical analysis demonstrated that the composite biochar possessed a high surface area and abundant oxygen-containing functional groups. XPS and FTIR analyses confirmed the efficient adsorption of U(VI), attributed to chelation interactions between phosphate groups, magnesium hydroxyl groups, hydroxyl groups and U(VI), as well as the co-precipitation of U(VI) with multi-hydroxyl aluminum cations captured by LDH. The composite biochar reached adsorption equilibrium with U(VI) within 80 min and exhibited excellent fitting to the pseudo-second-order kinetic model and Langmuir model. Under conditions of pH = 4 and 298 K, it displayed significantly high maximum adsorption capacity of approximately 388.81 mg g⁻1, surpassing untreated biochar by 17-fold. The adsorption process was found to be endothermic and spontaneous and even after five consecutive adsorption-desorption cycles, the removal efficiency of U(VI) remained stable at 75.46%. These findings underscore the promising application prospects of Magnesium-aluminum layered double hydroxide composite phosphate-modified hydrothermal biochar in efficiently separating U(VI) from uranium-containing wastewater, emphasizing its environmental and economic value.
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Affiliation(s)
- Xinchen Chen
- Sino-French Institute of Nuclear Engineering and Technology, Sun Yat-sen University, Zhuhai 519082, Guangdong, China.
| | - Jingyu Zhong
- Sino-French Institute of Nuclear Engineering and Technology, Sun Yat-sen University, Zhuhai 519082, Guangdong, China.
| | - Huanyue Lin
- Sino-French Institute of Nuclear Engineering and Technology, Sun Yat-sen University, Zhuhai 519082, Guangdong, China.
| | - Ziyuan Ye
- Faculty of Psychology, Beijing Normal University, Zhuhai, 519082, Guangdong, China.
| | - Yun Wang
- School of Nuclear Science and Engineering, East China University of Technology, Nanchang, 330013, Jiangxi, China.
| | - Xianfeng Ma
- Sino-French Institute of Nuclear Engineering and Technology, Sun Yat-sen University, Zhuhai 519082, Guangdong, China.
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Li D, Yan S, Yong X, Zhang X, Zhou J. Ball-milled magnetic sludge biochar enables fast aerobic granulation in anoxic/oxic process for the treatment of coal chemical wastewater. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 880:163241. [PMID: 37011673 DOI: 10.1016/j.scitotenv.2023.163241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 03/27/2023] [Accepted: 03/30/2023] [Indexed: 05/27/2023]
Abstract
Coal chemical wastewater (CCW) containing toxic and hazardous matters requires to be treated prior to discharge. Promoting the in-situ formation of magnetic aerobic granular sludge (mAGS) in continuous flow reactor process has a great potential for CCW remediation. However, long granulation time and low stability limit the application of AGS technology. In this study, Fe3O4/sludge biochar (Fe3O4/SC) with biochar matrix derived from coal chemical sludge were applied to facilitate the aerobic granulation in two-stage continuous flow reactors, containing separated anoxic and oxic reaction units (abbreviated as A/O process). The performance of A/O process was evaluated at various hydraulic retention times (HRTs) (42 h, 27 h, and 15 h). Magnetic Fe3O4/SC with porous structures, high specific surface area (BET = 96.69 m2/g), and abundant functional groups was successfully prepared by ball-milled method. Adding magnetic Fe3O4/SC to A/O process could promote aerobic granulation (85 days) and the removal of chemical oxygen demand (COD), ammonia nitrogen (NH4+-N), and total nitrogen (TN) from CCW at all tested HRTs. Since the formed mAGS had high biomass, good settling ability, and high electrochemical activities, mAGS-based A/O process had high tolerance to the decrease of HRT from 42 h to 15 h for CCW treatment. The optimized HRT for A/O process was 27 h, at which Fe3O4/SC addition can result in the increase of COD, NH4+-N and TN removal efficiencies by 2.5 %, 4.7 % and 10.5 %, respectively. Based on 16S rRNA genes sequencing, the relative abundances of genus Nitrosomonas, Hyphomicrobium/Hydrogenophaga and Gaiella in mAGS accounting for nitrification, denitrification as well as COD removal were increased during aerobic granulation. Overall, this study proved that adding Fe3O4/SC to A/O process was effective for facilitating aerobic granulation and CCW treatment.
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Affiliation(s)
- Dan Li
- College of Environmental Science and Engineering, Nanjing Tech University, Nanjing, Jiangsu 211816, China; Bioenergy Research Institute, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, Jiangsu 211816, China
| | - Su Yan
- College of Environmental Science and Engineering, Nanjing Tech University, Nanjing, Jiangsu 211816, China; Bioenergy Research Institute, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, Jiangsu 211816, China
| | - Xiaoyu Yong
- Bioenergy Research Institute, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, Jiangsu 211816, China
| | - Xueying Zhang
- College of Environmental Science and Engineering, Nanjing Tech University, Nanjing, Jiangsu 211816, China.
| | - Jun Zhou
- College of Environmental Science and Engineering, Nanjing Tech University, Nanjing, Jiangsu 211816, China; Bioenergy Research Institute, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, Jiangsu 211816, China.
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Chen X, Xia H, Lv J, Liu Y, Li Y, Xu L, Xie C, Wang Y. Magnetic hydrothermal biochar for efficient enrichment of uranium(VI) by embedding Fe3O4 nanoparticles on bamboo materials from “one-can” strategy. Colloids Surf A Physicochem Eng Asp 2023. [DOI: 10.1016/j.colsurfa.2022.130748] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Preparation of C30 concrete and its adsorption performance for Cs(I). J Radioanal Nucl Chem 2022. [DOI: 10.1007/s10967-022-08273-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Jiang Q, Wang Y, Cheng J, Pan Y, Ren J, Leng Y, Liu Y, Bao C, Wang L, Tuo X. Sorption of cesium on surrounding granite of Chinese low- and medium-level nuclear waste repository in the groundwater environment. J Radioanal Nucl Chem 2022. [DOI: 10.1007/s10967-022-08280-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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Yu S, Wu X, Ye J, Li M, Zhang Q, Zhang X, Lv C, Xie W, Shi K, Liu Y. Dual Effect of Acetic Acid Efficiently Enhances Sludge-Based Biochar to Recover Uranium From Aqueous Solution. Front Chem 2022; 10:835959. [PMID: 35273949 PMCID: PMC8902313 DOI: 10.3389/fchem.2022.835959] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Accepted: 01/11/2022] [Indexed: 11/13/2022] Open
Abstract
Excess sludge (ES) treatment and that related to the uranium recovery from uranium-containing wastewater (UCW) are two hot topics in the field of environmental engineering. Sludge-based biochar (SBB) prepared from ES was used to recover uranium from UCW. Excellent effects were achieved when SBB was modified by acetic acid. Compared with SBB, acetic acid-modified SBB (ASBB) has shown three characteristics deserving interest: 1) high sorption efficiency, in which the sorption ratio of U(VI) was increased by as high as 35.0%; 2) fast sorption rate, as the equilibrium could be achieved within 5.0 min; 3) satisfied sorption/desorption behavior; as a matter of fact, the sorption rate of U(VI) could still be maintained at 93.0% during the test cycles. In addition, based on the test conditions and various characterization results, it emerged as a dual effect of acetic acid on the surface of SBB, i.e., to increase the porosity and add (−COOH) groups. It was revealed that U(VI) and −COO− combined in the surface aperture of ASBB via single-dentate coordination. Altogether, a new utilization mode for SBB is here proposed, as a means of efficient uranium sorption from UCW.
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Affiliation(s)
- Shoufu Yu
- University of South China, Hengyang, China
| | - Xiaoyan Wu
- University of South China, Hengyang, China
- Hengyang Key Laboratory of Soil Contamination Control and Remediation, University of South China, Hengyang, China
- Key Laboratory of Radioactive Waste Treatment and Disposal, University of South China, Hengyang, China
- *Correspondence: Xiaoyan Wu, ; Yong Liu,
| | - Jian Ye
- University of South China, Hengyang, China
- Hengyang Key Laboratory of Soil Contamination Control and Remediation, University of South China, Hengyang, China
- Key Laboratory of Radioactive Waste Treatment and Disposal, University of South China, Hengyang, China
| | - Mi Li
- University of South China, Hengyang, China
- Hengyang Key Laboratory of Soil Contamination Control and Remediation, University of South China, Hengyang, China
- Key Laboratory of Radioactive Waste Treatment and Disposal, University of South China, Hengyang, China
| | - Qiucai Zhang
- University of South China, Hengyang, China
- Decommissioning Engineering Technology Research Center of Hunan Province Uranium Tailings Reservoir, University of South China, Hengyang, China
| | - Xiaowen Zhang
- University of South China, Hengyang, China
- Hengyang Key Laboratory of Soil Contamination Control and Remediation, University of South China, Hengyang, China
- Key Laboratory of Radioactive Waste Treatment and Disposal, University of South China, Hengyang, China
| | - Chunxue Lv
- University of South China, Hengyang, China
| | - Wenjie Xie
- University of South China, Hengyang, China
| | - Keyou Shi
- University of South China, Hengyang, China
| | - Yong Liu
- University of South China, Hengyang, China
- Decommissioning Engineering Technology Research Center of Hunan Province Uranium Tailings Reservoir, University of South China, Hengyang, China
- *Correspondence: Xiaoyan Wu, ; Yong Liu,
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Chen X, Wang Y, Lv J, Feng Z, Liu Y, Xia H, Li Y, Wang C, Zeng K, Liu Y, Yuan D. Simple one-pot synthesis of manganese dioxide modified bamboo-derived biochar composite for uranium(VI) removal. NEW J CHEM 2022. [DOI: 10.1039/d2nj02292c] [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
Exploitation of bamboo-derived biochar offers a lucrative opportunity for using moso bamboo due to its short growth cycle, large quantity and universality. Novel MnO2 modified bamboo-derived biochar composites (MnO2@BBC) were...
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