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Wang C, Lü Y, Qi H, Luo X, He L. Flotation mechanism and performance of air/condensate bubbles for removing oil droplets in the presence of acetic acid. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 927:172311. [PMID: 38599416 DOI: 10.1016/j.scitotenv.2024.172311] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2024] [Revised: 03/20/2024] [Accepted: 04/06/2024] [Indexed: 04/12/2024]
Abstract
Flotation technology is widely utilized to remove emulsified oil droplets from Produced water. Organic acid adsorption on the oil droplet surface affects bubble attachment, reducing oil removal efficiency. This investigation exploited the principle of similar dissolution to synthesize condensate bubbles (CB). The surface properties of oil droplets and CB and air bubbles (AB) were appraised using FTIR, zeta potential, interfacial tension, and contact angle measurements. The research also investigated the effects of acetic acids (AA) on the adhesion of oil droplets to AB and CB along with the underlying mechanism via the Extended Derjaguin-Landau-Verwey-Overbeek (EDLVO) interaction theory and the Stefan-Reynolds model of liquid film thinning, integrated with adhesion times. Flotation efficiency and kinetic dissimilarities between AB and CB were also examined. The results indicated that CB exhibits superior lipophilic hydrophobicity compared to AB, reduced induction and spreading times upon oil droplet attachment, and maximized oil removal efficiency. Furthermore, CB could mitigate the impact of AA on adhesion. The interaction barriers between CB and oil droplets were minimal, and the thinning rate of the hydration film was quicker than in AB. The conventional first-order model proved effective in fitting the AB flotation, whereas a delay constant was applied to the model of the CB flotation rate.
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Affiliation(s)
- Ce Wang
- College of Pipeline and Civil Engineering, China University of Petroleum (East China), Qingdao, Shandong Province 266580, China
| | - Yuling Lü
- College of Pipeline and Civil Engineering, China University of Petroleum (East China), Qingdao, Shandong Province 266580, China; Surface Engineering Pilot Test Center, CNPC, Heilongjiang, Daqing 163000, China.
| | - Hongwei Qi
- China Petroleum & Chemical Co., Ltd. of North Branch, Ordos, Inner Mongolia 017400, China
| | - Xiaoming Luo
- College of Pipeline and Civil Engineering, China University of Petroleum (East China), Qingdao, Shandong Province 266580, China; Surface Engineering Pilot Test Center, CNPC, Heilongjiang, Daqing 163000, China
| | - Limin He
- College of Pipeline and Civil Engineering, China University of Petroleum (East China), Qingdao, Shandong Province 266580, China; Surface Engineering Pilot Test Center, CNPC, Heilongjiang, Daqing 163000, China
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2
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Effective utilization of CuO derived from waste printed circuit boards as a peroxymonosulfate activator for the degradation of reactive blue 19. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.121657] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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3
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Yao X, Yu X, Wang L, Zeng Y, Mao L, Liu S, Xie H, He G, Huang Z, Zhang S. Preparation of cinnamon hydroxamic acid and its flotation characteristics and mechanism to fine-grained wolframite. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.119721] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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4
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Huang Z, Zhang S, Wang H, Liu R, Cheng C, Shuai S, Hu Y, Zeng Y, Yu X, He G, Fu W, Burov VE, Poilov VZ. Recovery of wolframite from tungsten mine tailings by the combination of shaking table and flotation with a novel "crab" structure sebacoyl hydroxamic acid. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2022; 317:115372. [PMID: 35617862 DOI: 10.1016/j.jenvman.2022.115372] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Revised: 04/25/2022] [Accepted: 05/19/2022] [Indexed: 06/15/2023]
Abstract
Tailings ponds for gangue mineral storage are widely recognized as a dangerous source of toxic minerals and heavy metal-bearing solution. Therefore, recovering valuable minerals and critical elements from tailings is an important means to protect the environment in an economic way. Wolframite tailings usually contain a considerable amount of tungsten resources, but the presence of high content of kaolinite sludge makes it very difficult to recycle wolframite. Herein, a novel sebacoyl hydroxamic acid (SHA) was synthesized and introduced as a novel wolframite collector to effectively utilize wolframite tailings, and its collection performance was compared with that of benzohydroxamic acid (BHA). Micro-flotation tests showed that SHA could still obtain 80% wolframite recovery in the presence of kaolinite slimes. Bench-scale flotation tests indicated that SHA can effectively recover wolframite concentrate with 55.64% WO3 grade and 75.28% WO3 recovery from wolframite tailings by the combined shaking table-flotation process. Polarized light microscope observations showed that SHA could promote the formation of hydrophobic agglomerates of wolframite particles. These results show that SHA can be used as an efficient collector for disposing of wolframite tailings, and provide an important reference for the development of efficient and comprehensive utilization of tailings.
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Affiliation(s)
- Zhiqiang Huang
- Jiangxi Key Laboratory of Mining Engineering, Jiangxi University of Science and Technology, Ganzhou, Jiangxi, 34100, China.
| | - Shiyong Zhang
- Jiangxi Key Laboratory of Mining Engineering, Jiangxi University of Science and Technology, Ganzhou, Jiangxi, 34100, China
| | - Hongling Wang
- Guangdong Institute of Resources Comprehensive Utilization, Guangzhou, 510650, China
| | - Rukuan Liu
- Hunan Academy of Forestry, Changsha, Hunan, 410004, China
| | - Chen Cheng
- Jiangxi Key Laboratory of Mining Engineering, Jiangxi University of Science and Technology, Ganzhou, Jiangxi, 34100, China
| | - Shuyi Shuai
- Jiangxi Key Laboratory of Mining Engineering, Jiangxi University of Science and Technology, Ganzhou, Jiangxi, 34100, China
| | - Yajing Hu
- Jiangxi Key Laboratory of Mining Engineering, Jiangxi University of Science and Technology, Ganzhou, Jiangxi, 34100, China
| | - Yuhui Zeng
- Jiangxi Key Laboratory of Mining Engineering, Jiangxi University of Science and Technology, Ganzhou, Jiangxi, 34100, China
| | - Xinyang Yu
- Jiangxi Key Laboratory of Mining Engineering, Jiangxi University of Science and Technology, Ganzhou, Jiangxi, 34100, China
| | - Guichun He
- Jiangxi Key Laboratory of Mining Engineering, Jiangxi University of Science and Technology, Ganzhou, Jiangxi, 34100, China
| | - Weng Fu
- School of Chemical Engineering, The University of Queensland, St Lucia, 4072, QLD, Australia
| | - Vladimir E Burov
- Department of Chemical Engineering, Perm National Research Polytechnic University, Perm, 614990, Russia
| | - Vladimir Z Poilov
- Department of Chemical Engineering, Perm National Research Polytechnic University, Perm, 614990, Russia.
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5
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Huang Z, Li W, Shuai S, Zhang S, Wang H, Liu R, Cheng C, Yu X, He G, Fu W. Iron ore production using a new Gemini surfactant at 273 K. Chem Commun (Camb) 2022; 58:8678-8681. [PMID: 35822925 DOI: 10.1039/d2cc02705d] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Herein we present the use of a Gemini surfactant and reverse froth flotation to efficiently separate magnetite from quartz and produce iron ore at 273 K. This surfactant achieved an obviously superior flotation performance (TFe recovery increased by 48.18%), and the dosage of the Gemini surfactant was three times less than that of a conventional monomeric surfactant. Our findings are expected to serve as a general guide to design a new and excellent collector for high-efficiency mineral flotation and to lead to an efficient and clean development of mineral resources.
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Affiliation(s)
- Zhiqiang Huang
- Jiangxi Key Laboratory of Mining Engineering, Jiangxi University of Science and Technology, Ganzhou, Jiangxi, 34100, China.
| | - Wenyuan Li
- Jiangxi Key Laboratory of Mining Engineering, Jiangxi University of Science and Technology, Ganzhou, Jiangxi, 34100, China.
| | - Shuyi Shuai
- Jiangxi Key Laboratory of Mining Engineering, Jiangxi University of Science and Technology, Ganzhou, Jiangxi, 34100, China.
| | - Shiyong Zhang
- Jiangxi Key Laboratory of Mining Engineering, Jiangxi University of Science and Technology, Ganzhou, Jiangxi, 34100, China.
| | - Hongling Wang
- Guangdong Institute of Resources Comprehensive Utilization, Guangzhou, 510650, China
| | - Rukuan Liu
- Hunan Academy of Forestry, Changsha, Hunan, 410004, China
| | - Chen Cheng
- School of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China
| | - Xinyang Yu
- Jiangxi Key Laboratory of Mining Engineering, Jiangxi University of Science and Technology, Ganzhou, Jiangxi, 34100, China.
| | - Guichun He
- Jiangxi Key Laboratory of Mining Engineering, Jiangxi University of Science and Technology, Ganzhou, Jiangxi, 34100, China.
| | - Weng Fu
- School of Chemical Engineering, The University of Queensland, St Lucia, 4072 QLD, Australia
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Bordbar MM, Tashkhourian J, Hemmateenejad B. Paper-Based Optical Nose Made with Bimetallic Nanoparticles for Monitoring Ignitable Liquids in Gasoline. ACS APPLIED MATERIALS & INTERFACES 2022; 14:8333-8342. [PMID: 35113531 DOI: 10.1021/acsami.1c24194] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
A paper-based optical nose was fabricated by dropping bimetallic silver and gold nanoparticles on a paper substrate. The nanoparticles were synthesized by both natural (lemon, pomegranate, and orange juices) and chemical (citrate, gallic acid, and ascorbic acid) reducing agents. The performance of the assay was evaluated for identifying gasoline and five ignitable liquids such as diesel, ethanol, methanol, kerosene, and thinner. The interaction of the sensor with sample vapors caused aggregation, consequently changing the color of nanoparticles. The color changes, which were captured by a scanner, represented a specified colorimetric map for each analyte, allowing one to identify the studied fuels. The visual results were confirmed using multivariate statistical analysis such as principal component analysis and hierarchical clustering analysis. Also, partial least-squares regression was used to assist the proposed assay for estimating the amount of studied ignitable liquids as counterfeit species in the gasoline sample. The root-mean-square errors for prediction were 3.4, 2.1, 1.9, 2.0, and 1.7% for diesel, thinner, kerosene, ethanol, and methanol, respectively. Finally, the fabricated sensor indicated high efficiency for the on-site detection of pure industrial gasoline samples from adulterated ones.
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7
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Han G, Du Y, Huang Y, Wang W, Su S, Liu B. Study on the removal of hazardous Congo red from aqueous solutions by chelation flocculation and precipitation flotation process. CHEMOSPHERE 2022; 289:133109. [PMID: 34856235 DOI: 10.1016/j.chemosphere.2021.133109] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Revised: 11/22/2021] [Accepted: 11/26/2021] [Indexed: 06/13/2023]
Abstract
Dyes are intensively used in textile and dyeing industries, and substantial volumes of organic wastewater with residual dye require treatment before discharges to public waterways. Flotation separation is an efficient and widely used method for the treatment of massive organic dye wastewaters. The key scientific problems for dye flotation separation lie in the mineralization transformation of dissolved dye to tangible flocs. In this work, a high-efficiency removal of hazardous azo dye Congo red (CR) from simulated wastewaters via metal ions chelation flocculation followed by flotation separation was proposed. It's demonstrated that CR can be chelated by the trivalent metal ions, including Al(III), Fe(III), and its mixture to form hydrophobic flocs, and then the flocs were efficiently removed via flotation in a microbubble column. The effects of chelation flocculation and flotation separation conditions on the removal efficiencies of CR, COD, and chromaticity from CR simulated wastewaters were optimized. Chelation effect of CR by trivalent metal ions was in this order: Al(III)+Fe(III)>Fe(III)>Al(III). The chelation mechanism suggested that CR molecules gradually changed from hydrazones to electronegative azo with the increase of pH to 6-7, and electrostatic attraction between the Al3(OH)45+ or Fe(OH)2+ with the CR was favorable for the chelation reaction, in which the metal ions chelated with N atoms on naphthalene ring and amino groups of CR. Over 99% CR was removed under the optimal chelation and flotation conditions: chelation by composite Al(III)/Fe(III) with a concentration of 25 mg/L at pH of 7 for 25min; followed by flotation with SDS concentration of 20 mg/L and air flow rate of 50 mL/min for 20min. Under this condition, the COD and chromaticity removal efficiency were over 96% and 98%, respectively, and the turbidity was lower than 0.1 NTU, meeting the water discharge requirement. Eventually, resourceful utilization of flotation sludge via calcination was conducted to prepare Al-Fe spinel refractory material.
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Affiliation(s)
- Guihong Han
- School of Chemical Engineering, Zhengzhou University, Zhengzhou, 450001, Henan, PR China
| | - Yifan Du
- School of Chemical Engineering, Zhengzhou University, Zhengzhou, 450001, Henan, PR China
| | - Yanfang Huang
- School of Chemical Engineering, Zhengzhou University, Zhengzhou, 450001, Henan, PR China.
| | - Wenjuan Wang
- School of Chemical Engineering, Zhengzhou University, Zhengzhou, 450001, Henan, PR China
| | - Shengpeng Su
- School of Chemical Engineering, Zhengzhou University, Zhengzhou, 450001, Henan, PR China
| | - Bingbing Liu
- School of Chemical Engineering, Zhengzhou University, Zhengzhou, 450001, Henan, PR China.
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8
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Froth flotation separation of lepidolite ore using a new Gemini surfactant as the flotation collector. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2021.119122] [Citation(s) in RCA: 30] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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9
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Singhaal R, Tashi L, Devi S, Sheikh HN. Hybrid photoluminescent material from lanthanide fluoride and graphene oxide with strong luminescence intensity as a chemical sensor for mercury ions. NEW J CHEM 2022. [DOI: 10.1039/d2nj00250g] [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
In this work, we employed NaxLiyGdF4:Tb3+@PMA@Phen@GO nanocomposite as chemical sensor for selective and sensitive luminescence sensing of toxic Hg2+ metal ion.
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Affiliation(s)
- Richa Singhaal
- Department of Chemistry, University of Jammu, Baba Sahib Ambedkar Road, Jammu, 180006, India
| | - Lobzang Tashi
- Department of Chemistry, University of Jammu, Baba Sahib Ambedkar Road, Jammu, 180006, India
| | - Swaita Devi
- Department of Chemistry, University of Jammu, Baba Sahib Ambedkar Road, Jammu, 180006, India
| | - Haq Nawaz Sheikh
- Department of Chemistry, University of Jammu, Baba Sahib Ambedkar Road, Jammu, 180006, India
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10
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Efficient removal of hazardous benzohydroxamic acid (BHA) contaminants from the industrial beneficiation wastewaters by facile precipitation flotation process. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.119718] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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11
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Krishnan U, Iyer SK. A Pyrazolo Imine-based Colorimetric and Turn-on Fluorescent Sensor Probe for Determination of Hg 2+ Ion and its Application in Test Paper Strips. Photochem Photobiol 2021; 98:843-855. [PMID: 34634146 DOI: 10.1111/php.13538] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Accepted: 09/24/2021] [Indexed: 12/24/2022]
Abstract
In this work, we synthesized diethylamino substituted pyrazolo imine (3) fluorescent probe for recognition of Hg2+ ion.The sensor probe 3 can detect Hg2+ by colorimetric method, and there is a 10-fold enhancement in fluorescence response. When the fluorescent probe bound with Hg2+ ion, turn-on fluorescence was observed via the coordination. Probe 3 has an excellent selectivity toward Hg2+ in the CH3 CN/H2 O (8:2, v/v) solution with low limit of detection and high binding association constant of 551 parts per billion (ppb) and 6.6067 × 106 m-1 for 3+Hg2+ , respectively. Furthermore, the formation of 3+Hg2+ complex with 1:1 binding mode was evidenced by Job's plot, 1 H NMR spectroscopy and Mass analysis. In addition, probe 3 is a feasible option to detect Hg2+ in various sources of water samples. Bio-imaging experiments have demonstrated that probe 3 can be used to monitor Hg2+ in Escherichia coli bacterial cell. The sensor 3 was also used for paper strip application to detect Hg2+ ion.
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Affiliation(s)
- Uma Krishnan
- Department of Chemistry, School of Advanced Sciences, Vellore Institute of Technology, Vellore, India
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12
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Das SK, Ellamparuthy G, Kundu T, Ghosh MK, Angadi SI. Critical analysis of metallic and non-metallic fractions in the flotation of waste printed circuit boards. POWDER TECHNOL 2021. [DOI: 10.1016/j.powtec.2021.05.061] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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13
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Separation of wolframite ore by froth flotation using a novel “crab” structure sebacoyl hydroxamic acid collector without Pb(NO3)2 activation. POWDER TECHNOL 2021. [DOI: 10.1016/j.powtec.2021.05.017] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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14
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Wu Y, Liu G, Pan D, Yuan H, Li B. A new mechanism and kinetic analysis for the efficient conversion of inorganic bromide in waste printed circuit board smelting ash via traditional sulfated roasting. JOURNAL OF HAZARDOUS MATERIALS 2021; 413:125394. [PMID: 33607586 DOI: 10.1016/j.jhazmat.2021.125394] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Revised: 12/21/2020] [Accepted: 02/09/2021] [Indexed: 06/12/2023]
Abstract
The waste printed circuit board smelting ash (WPCB-SA) produced in the waste printed circuit board smelting process is a hazardous material that not only contains valuable metals, but also contains a large amount of toxic and harmful inorganic bromides. The utilization of metals has received considerable attention in previous studies, but the recovery of hazardous bromides requires further study. In this article, a new idea of converting inorganic bromine in WPCB-SA by traditional sulfated roasting is proposed. Debromination kinetics under simulated experimental conditions are discussed, and kinetic equations are established. The kinetic results show that during low-temperature sulfated roasting, the conversion of Br in CuBr and PbBr2 conforms to the chemical reaction diffusion model and diffusion control the product layer model, respectively. A possible reaction mechanism is also proposed. Our research shows that the conversion of Br in CuBr is divided into three processes: covalent bond decomposition, hydrogen ion form acid, copper ion form salt, and HBr oxidation conversion, whereas the conversion of Br in PbBr2 is divided into two processes: sulfuric acid ionization, lead ion form salt and HBr oxidation conversion. This work provides the theoretical basis for the improvement and application of inorganic bromide recovery technology in WPCB-SA.
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Affiliation(s)
- Yufeng Wu
- Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124, PR China; Institute of Circular Economy, Beijing University of Technology, Beijing 100124, PR China.
| | - Gongqi Liu
- Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124, PR China; Institute of Circular Economy, Beijing University of Technology, Beijing 100124, PR China
| | - De'an Pan
- Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124, PR China; Institute of Circular Economy, Beijing University of Technology, Beijing 100124, PR China
| | - Haoran Yuan
- Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, PR China
| | - Bin Li
- Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124, PR China; Institute of Circular Economy, Beijing University of Technology, Beijing 100124, PR China
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15
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He Y, Yuan X, Zhang G, Wang H, Zhang T, Xie W, Li L. A critical review of current technologies for the liberation of electrode materials from foils in the recycling process of spent lithium-ion batteries. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 766:142382. [PMID: 33183828 DOI: 10.1016/j.scitotenv.2020.142382] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Revised: 09/04/2020] [Accepted: 09/11/2020] [Indexed: 06/11/2023]
Abstract
Proper disposal of spent lithium-ion batteries is beneficial for the resource recycling and pollution elimination. Full liberation of electrode materials, including the liberation between electrode material and current collector (copper/aluminum foils) and the liberation among electrode material particles, is the pivotal precondition for improving the recovery efficiency of electrode materials. In this article, authors attempt to carry out a summary of current technologies used in the liberation of electrode materials derived from spent lithium-ion batteries. However, specialized studies about the liberation of electrode materials are insufficient at present. This research clearly shows that: (1) Organic binder must be removed so as to improve the liberation and metallurgy efficiency of electrode materials; (2) A collaboration of varied technologies is the necessary process to achieve high liberation efficiency between electrode materials and copper/aluminum foils; (3) Pyrolysis may be a recommended technology for removal of organic binder because part of pyrolysis products can be recovered. Finally, an alternative recycling flowchart of spent LIBs is proposed.
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Affiliation(s)
- Yaqun He
- School of Chemical Engineering and Technology, China University of Mining and Technology, No.1 Daxue Road, Xuzhou, Jiangsu 221116, China
| | - Xue Yuan
- School of Chemical Engineering and Technology, China University of Mining and Technology, No.1 Daxue Road, Xuzhou, Jiangsu 221116, China
| | - Guangwen Zhang
- School of Environment Science and Spatial Informatics, China University of Mining and Technology, No.1 Daxue Road, Xuzhou, Jiangsu 221116, China.
| | - Haifeng Wang
- School of Chemical Engineering and Technology, China University of Mining and Technology, No.1 Daxue Road, Xuzhou, Jiangsu 221116, China
| | - Tao Zhang
- Research Institute of Tsinghua University in Shenzhen, Shen Zhen 518057, China.
| | - Weining Xie
- Advanced Analysis and Computation Center, China University of Mining and Technology, No.1 Daxue Road, Xuzhou, Jiangsu 221116, China
| | - Liping Li
- Guangdong Guanghua Technology Co., Ltd., No.295 University Road, Shantou, Guangdong 515063, China
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16
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Xia W, Wu F, Jaiswal S, Li Y, Peng Y, Xie G. Chemical and physical modification of low rank coal floatability by a compound collector. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2020.125943] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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17
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Li D, Wang H, Li C, Liang Y, Yan X, Zhang H. Determination and modulation of the typical interactions among dispersed phases relevant to flotation applications: A review. Adv Colloid Interface Sci 2021; 288:102359. [PMID: 33422930 DOI: 10.1016/j.cis.2020.102359] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Revised: 12/04/2020] [Accepted: 12/24/2020] [Indexed: 11/28/2022]
Abstract
Flotation is a process involving multi-components, multi-scales, and gas-liquid-solid three phases, where the material separation is achieved based on the difference in surface hydrophobicity of various constituents. In a flotation system, fluids are usually regarded as the continuous phase, while the dispersed phases refer to scattered particles, bubbles, and droplets with low solubility as a dispersion that is surrounded by the aqueous environment. Fundamentally, the interactions among dispersed phases exist throughout the flotation process, and play distinct roles during different periods. For example, the liquid collector-solid, solid-solid, bubble-bubble and gas bubble-solid interactions are closely associated with the particle surface modification, particle behavior, bubble size evolution and separation in flotation, respectively. Therefore, the influences of each stage are all worthy of concern, and should be spared sufficient attention, which requires to formulate a horizontal writing structure. In this review, instead of summarizing all available characterization techniques or measurements, certain typical examples or methods were consciously chosen to perform analysis or comparison, aiming to summarize recent studies on the determination and modulation of dispersed phase interactions. The determination on the interactions among dispersed phases is helpful for fundamentally understanding the microcosmic process connotations, and their modulation contributes to firmly providing macroscopic optimization schemes for practical applications. By integrating some typically available theoretical calculations and experimental measurements related to the dispersed phase interactions, the present article is devoted to revealing the influential factors, finding out the current challenges or knowledge gaps, and affording certain references or suggestions for future investigations.
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Affiliation(s)
- Danlong Li
- National Engineering Research Center for Coal Preparation and Purification, China University of Mining and Technology, 221116 Xuzhou, China; School of Chemical Engineering and Technology, China University of Mining and Technology, 221116 Xuzhou, China
| | - Hainan Wang
- National Engineering Research Center for Coal Preparation and Purification, China University of Mining and Technology, 221116 Xuzhou, China; School of Chemical Engineering and Technology, China University of Mining and Technology, 221116 Xuzhou, China
| | - Chenwei Li
- National Engineering Research Center for Coal Preparation and Purification, China University of Mining and Technology, 221116 Xuzhou, China; School of Chemical Engineering and Technology, China University of Mining and Technology, 221116 Xuzhou, China
| | - Yannan Liang
- National Engineering Research Center for Coal Preparation and Purification, China University of Mining and Technology, 221116 Xuzhou, China; School of Chemical Engineering and Technology, China University of Mining and Technology, 221116 Xuzhou, China
| | - Xiaokang Yan
- National Engineering Research Center for Coal Preparation and Purification, China University of Mining and Technology, 221116 Xuzhou, China; School of Chemical Engineering and Technology, China University of Mining and Technology, 221116 Xuzhou, China
| | - Haijun Zhang
- National Engineering Research Center for Coal Preparation and Purification, China University of Mining and Technology, 221116 Xuzhou, China; School of Chemical Engineering and Technology, China University of Mining and Technology, 221116 Xuzhou, China.
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18
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Zhu XN, Nie CC, Ni Y, Zhang T, Li B, Wang DZ, Qu SJ, Qiao FM, Lyu XJ, Qiu J, Li L, Ren YG, Wu P. Advanced utilization of copper in waste printed circuit boards: Synthesis of nano-copper assisted by physical enrichment. JOURNAL OF HAZARDOUS MATERIALS 2021; 401:123294. [PMID: 32629354 DOI: 10.1016/j.jhazmat.2020.123294] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Revised: 06/12/2020] [Accepted: 06/19/2020] [Indexed: 06/11/2023]
Abstract
The copper in the waste printed circuit boards (WPCBs) is cleanly recycled by physical methods and presented in the form of nano copper particles by hydrometallurgical, which provides environmental approach to the advanced utilization of metal copper. Copper in WPCBs was first pre-concentrated by gradient enrichment process including gravity separation, mechanical grinding and flotation. The leaching method was then used to dissolve copper from the flotation concentrate in ammoniacal/ammonium salt solutions. Subsequently, reduction treatment was conducted to synthesize nano-copper from leaching solution. The enrichment results of the clean physical separation process show that the grade of copper increased from 16.22% to -38.05% by gravity separation, and the grade of copper further increased to 72.62 % by flotation after dissociation, which avoids overgrinding of low value components. Copper nanoparticles can be prepared effectively, and the recovery of copper in the leaching process reaches 99 %. The particle size of copper nanoparticles obtained by ascorbic acid reduction is tens of nanometers, and the surface of copper nanoparticles is smooth and nearly spherical. The present study proposes an environmentally friendly process of preparing nano-copper from the copper in WPCBs.
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Affiliation(s)
- Xiang-Nan Zhu
- College of Chemical and Environmental Engineering, Shandong University of Science and Technology, Qingdao, Shandong 266590, China.
| | - Chun-Chen Nie
- College of Chemical and Environmental Engineering, Shandong University of Science and Technology, Qingdao, Shandong 266590, China
| | - Yang Ni
- College of Chemical and Environmental Engineering, Shandong University of Science and Technology, Qingdao, Shandong 266590, China
| | - Tao Zhang
- Research Institute of Tsinghua University in Shenzhen, Shen Zhen 518057, China
| | - Biao Li
- Mining and Minerals Engineering Department, Virginia Polytechnic Institute and State University, Blacksburg, VA 24060, USA
| | - De-Zhang Wang
- College of Chemical and Environmental Engineering, Shandong University of Science and Technology, Qingdao, Shandong 266590, China
| | - Shi-Juan Qu
- College of Chemical and Environmental Engineering, Shandong University of Science and Technology, Qingdao, Shandong 266590, China
| | - Fa-Ming Qiao
- College of Chemical and Environmental Engineering, Shandong University of Science and Technology, Qingdao, Shandong 266590, China
| | - Xian-Jun Lyu
- College of Chemical and Environmental Engineering, Shandong University of Science and Technology, Qingdao, Shandong 266590, China
| | - Jun Qiu
- College of Chemical and Environmental Engineering, Shandong University of Science and Technology, Qingdao, Shandong 266590, China
| | - Lin Li
- College of Chemical and Environmental Engineering, Shandong University of Science and Technology, Qingdao, Shandong 266590, China
| | - Yang-Guang Ren
- College of Chemical and Environmental Engineering, Shandong University of Science and Technology, Qingdao, Shandong 266590, China
| | - Peng Wu
- College of Chemical and Environmental Engineering, Shandong University of Science and Technology, Qingdao, Shandong 266590, China.
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Li L, Ma C, Lin M, Liu M, Yu H, Wang Q, Cao X, You X. Study of sodium lignosulfonate prepare low-rank coal-water slurry: Experiments and simulations. Chin J Chem Eng 2021. [DOI: 10.1016/j.cjche.2020.07.064] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Huang Z, Cheng C, Li K, Zhang S, Zhou J, Luo W, Liu Z, Qin W, Wang H, Hu Y, He G, Yu X, Qiu T, Fu W. Reverse flotation separation of quartz from phosphorite ore at low temperatures by using an emerging Gemini surfactant as the collector. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2020.116923] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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Evaluation of a novel morpholine-typed Gemini surfactant as the collector for the reverse flotation separation of halite from carnallite ore. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.113506] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Zhu XN, Zhang LY, Dong SL, Kou WJ, Nie CC, Lyu XJ, Qiu J, Li L, Liu ZX, Wu P. Mechanical activation to enhance the natural floatability of waste printed circuit boards. WASTE MANAGEMENT (NEW YORK, N.Y.) 2020; 109:222-230. [PMID: 32416564 DOI: 10.1016/j.wasman.2020.05.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Revised: 04/10/2020] [Accepted: 05/06/2020] [Indexed: 06/11/2023]
Abstract
The metal in the waste printed circuit boards (WPCBs) is an excellent secondary metal resource. WPCBs were ground to dissociate, and impurities in the dissociated product were removed by gradient flotation to recover valuable metals in this study. The effects of crushing methods on size composition and dissociation state of the crushed products were studied. Then the gradient flotation experiment was designed to verify the natural floatability of ground materials. Grinding test shows that impact crushing has greater grinding fineness (-0.074 mm) than shear crushing, which is 42.14% and 26.18% respectively with 5 min grinding. The flotation test results illustrate that the natural floatability of impurities increases with the grinding fineness, that is, the yield of floats increases without flotation reagents. For impact crushing and shear crushing, the floats yields are 38.48% and 31.75% respectively, accompanied by 70.53% and 65.46% impurity removal for ground materials with 5 min grinding. Subsequently, 21.61% and 26.35% of impurities can be further removed with the aid of collector. Finally, the recovery of Cu in concentrate reaches 67.84% and 65.75%, respectively. FT-IR proves that the excellent floatability of particles is caused by the significant hydrophobic group. Mechanical grinding has been proved to have double effects of improving dissociation and natural floatability.
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Affiliation(s)
- Xiang-Nan Zhu
- College of Chemical and Environmental Engineering, Shandong University of Science and Technology, Qingdao, Shandong 266590, China.
| | - Li-Ye Zhang
- College of Chemical and Environmental Engineering, Shandong University of Science and Technology, Qingdao, Shandong 266590, China
| | - Shu-Ling Dong
- College of Chemical and Environmental Engineering, Shandong University of Science and Technology, Qingdao, Shandong 266590, China
| | - Wen-Jia Kou
- College of Chemical and Environmental Engineering, Shandong University of Science and Technology, Qingdao, Shandong 266590, China
| | - Chun-Chen Nie
- College of Chemical and Environmental Engineering, Shandong University of Science and Technology, Qingdao, Shandong 266590, China
| | - Xian-Jun Lyu
- College of Chemical and Environmental Engineering, Shandong University of Science and Technology, Qingdao, Shandong 266590, China
| | - Jun Qiu
- College of Chemical and Environmental Engineering, Shandong University of Science and Technology, Qingdao, Shandong 266590, China
| | - Lin Li
- College of Chemical and Environmental Engineering, Shandong University of Science and Technology, Qingdao, Shandong 266590, China
| | - Zhen-Xue Liu
- College of Chemical and Environmental Engineering, Shandong University of Science and Technology, Qingdao, Shandong 266590, China.
| | - Peng Wu
- College of Chemical and Environmental Engineering, Shandong University of Science and Technology, Qingdao, Shandong 266590, China.
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