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Vidovix TB, Januário EFD, Bergamasco R, Vieira AMS. Efficient removal of sertraline hydrochloride from wastewater using banana peels functionalized: performance adsorption, mechanisms and applicability. Environ Technol 2024; 45:2119-2131. [PMID: 36597779 DOI: 10.1080/09593330.2022.2164745] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Accepted: 12/26/2022] [Indexed: 06/17/2023]
Abstract
The presence of sertraline hydrochloride (SER) has been detected in water bodies and wastewater, which encourages the search for alternative treatments for its control and removal. Agro-industrial residues are considered efficient adsorbents and functionalization with magnetic nanoparticles improve the adsorptive properties of these materials, in addition to facilitating their separation from a fluid by an external magnetic field. Thus, this study developed and characterized a new material via the functionalization of the banana peel with iron oxide nanoparticles (BANFunc) for the adsorption of SER in batch experiments. Physicochemical and spectroscopic techniques indicated that the BANFunc functionalization method was effective and improved the adsorption capacity (0.68 and 39.96 mg g-1 for BANPure and BANFunc, respectively). The adsorption studies revealed a maximum adsorptive capacity of 142.85 mg g-1 at 240 min and 318 K. Furthermore, the process presented spontaneous and endothermic behaviour, with a better fit to the pseudo-first-order and Langmuir models for the kinetic and isothermal, respectively. The reuse of the biosorbent was effective for five cycles, and even in the 3rd cycle, the adsorbent showed more than 80% SER removal. The adsorption process can be explained by hydrogen bonds and π-interactions. In the synthetic mixture treatment, the biosorbent demonstrated a satisfactory removal rate, of 86.91%, and individual removals of 83.23%, 89.36% and 88.15% for SER, safranine orange and chloroquine, respectively. Therefore, BANFunc is a promising material for large-scale applications, considering its sustainable character and high treatment efficiency.
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Affiliation(s)
| | | | - Rosângela Bergamasco
- Department of Chemical Engineering, State University of Maringá, Maringá, Brazil
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Song D, Jiang F, Yuan D, Chen Q, Hong M. Optimizing Sieving Effect for CO 2 Capture from Humid Air Using an Adaptive Ultramicroporous Framework. Small 2023; 19:e2302677. [PMID: 37357172 DOI: 10.1002/smll.202302677] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Revised: 05/20/2023] [Indexed: 06/27/2023]
Abstract
Excessive CO2 in the air can not only lead to serious climate problems but also cause serious damage to humans in confined spaces. Here, a novel metal-organic framework (FJI-H38) with adaptive ultramicropores and multiple active sites is prepared. It can sieve CO2 from air with the very high adsorption capacity/selectivity but the lowest adsorption enthalpy among the reported physical adsorbents. Such excellent adsorption performances can be retained even at high humidity. Mechanistic studies show that the polar ultramicropore is very suitable for molecular sieving of CO2 from N2 , and the distinguishable adsorption sites for H2 O and CO2 enable them to be co-adsorbed. Notably, the adsorbed-CO2 -driven pore shrinkage can further promote CO2 capture while the adsorbed-H2 O-induced phase transitions in turn inhibit H2 O adsorption. Moreover, FJI-H38 has excellent stability and recyclability and can be synthesized on a large scale, making it a practical trace CO2 adsorbent. This will provide a new strategy for developing practical adsorbents for CO2 capture from the air.
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Affiliation(s)
- Danhua Song
- State Key Laboratory of Structure Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002, P.R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P.R. China
| | - Feilong Jiang
- State Key Laboratory of Structure Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002, P.R. China
| | - Daqiang Yuan
- State Key Laboratory of Structure Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002, P.R. China
| | - Qihui Chen
- State Key Laboratory of Structure Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002, P.R. China
| | - Maochun Hong
- State Key Laboratory of Structure Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002, P.R. China
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3
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Fei YH, Deng H, Wu G, Luo M, Chen Y, Wang X, Ye H, Liu T. Insight into adsorption process and mechanisms of Cr(III) using carboxymethyl cellulose- g-poly(acrylic acid- co-acrylamide)/attapulgite composite hydrogel. Environ Technol 2023; 44:4173-4187. [PMID: 35611631 DOI: 10.1080/09593330.2022.2082325] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Accepted: 05/15/2022] [Indexed: 06/15/2023]
Abstract
Cr(III) as one of the most concerned potentially toxic elements, is discharged from relevant industries and Cr(VI) reduction. Hydrogel-based adsorption could be one of the promising approaches for Cr(III) removal. Featured with environmental friendliness and low cost, carboxymethyl cellulose (CMC) was employed for the hydrogel synthesis, and attapulgite (APT) could be used to strengthen its stability. However, the adsorption performance and mechanisms need to be examined. In the present study, carboxymethyl cellulose-g-poly(acrylic acid-co-acrylamide)/ attapulgite (CMC-g-p(AA-co-AM)/APT) was synthesised via in situ copolymerisation. Its efficacy for removing Cr(III) from an aqueous solution was investigated using batch adsorption experiments. Results showed that the introduction of APT enhanced the thermal stability but decreased the swelling performance of the hydrogel. The prepared hydrogel could strongly adsorb Cr(III) at a wide pH range of 3.0-7.0. Cr(III) can be efficiently removed by the composite hydrogel within 1-2 h. At low concentration, CMC-g-p(AA-co-AM)/APT could slightly adsorbed more Cr(III) than CMC-g-p(AA-co-AM). The maximum absorption of CMC-g-p(AA-co-AM) and CMC-g-p(AA-co-AM)/APT were 74.8 and 47.7 mg/g at 298 K, respectively. The negative value of ΔHo and ΔGo indicated the adsorption of Cr(III) onto the two studied hydrogels is an exothermic and spontaneous process. Ion exchange and complexation, as implied by EDS, FT-IR and XPS, combining with electrostatic attraction are the possible adsorption mechanisms for Cr(III) onto the prepared hydrogels. All the results above suggests that the composite hydrogel CMC-g-p(AA-co-AM)/APT can be a promising candidate for the removal of Cr(III) from waste water.
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Affiliation(s)
- Ying-Heng Fei
- School of Environmental Science and Engineering, Guangzhou University, Guangzhou, People's Republic of China
| | - Hongmei Deng
- School of Environmental Science and Engineering, Guangzhou University, Guangzhou, People's Republic of China
- Key Laboratory of Water Safety and Protection in Pearl River Delta, Ministry of Education, Guangzhou, People's Republic of China
- Guangdong Provincial Key Laboratory of Radionuclides Pollution Control and Resources, Guangzhou University, Guangzhou, People's Republic of China
| | - Gaoyuan Wu
- School of Environmental Science and Engineering, Guangzhou University, Guangzhou, People's Republic of China
- Key Laboratory of Water Safety and Protection in Pearl River Delta, Ministry of Education, Guangzhou, People's Republic of China
| | - Mengting Luo
- School of Environmental Science and Engineering, Guangzhou University, Guangzhou, People's Republic of China
- Key Laboratory of Water Safety and Protection in Pearl River Delta, Ministry of Education, Guangzhou, People's Republic of China
| | - Yongheng Chen
- Key Laboratory of Water Safety and Protection in Pearl River Delta, Ministry of Education, Guangzhou, People's Republic of China
| | - Xiaohuan Wang
- College of Chemistry and Pharmaceutical Engineering, Nanyang Normal University, Nanyang, People's Republic of China
| | - Hengpeng Ye
- School of Chemistry and Materials, South-Central University for Nationalities, Wuhan, People's Republic of China
| | - Tao Liu
- School of Civil and Engneering, Guangzhou University, Guangzhou, People's Republic of China
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4
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Liu GC, Zhang XW, Xin SS, Wang QW, Yan QH, Zhou CZ, Xin YJ. [Adsorption Characteristics of Tetracycline by CuFeO 2-modified Biochar]. Huan Jing Ke Xue 2023; 44:5222-5230. [PMID: 37699840 DOI: 10.13227/j.hjkx.202209299] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 09/14/2023]
Abstract
CuFeO2-modified biochars were prepared through co-precipitation and hydrothermal methods, and the composites had high efficiency removal for tetracycline (TC) from water. The CuFeO2-modified biochar with a 2:1 mass ratio of CuFeO2 to BC450 (CuFeO2/BC450=2:1) demonstrated the best adsorption performance. The kinetic process of TC adsorption by CuFeO2/BC450=2:1 was well fitted with the intraparticle diffusion model, suggesting that the adsorption process was controlled by film and pore diffusion. Under the condition of neutral pH and 298 K, the maximum adsorption capacity of the Langmuir model of CuFeO2/BC450=2:1 was 82.8 mg·g-1, which was much greater than that of BC450 (13.7 mg·g-1) and CuFeO2(14.8 mg·g-1). The thermodynamic data suggested that TC sorption onto CuFeO2/BC450=2:1 was a spontaneous and endothermic process. The removal of TC by CuFeO2/BC450=2:1 increased first and then decreased with increasing pH, and the maximum adsorption occurred under the neutral condition. The strong adsorption of TC by CuFeO2/BC450=2:1 could be attributed to better porosity, larger specific surface area, and more active sites (e.g., functional groups and charged surfaces). This work provided an efficient magnetic adsorbent for removing antibiotics.
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Affiliation(s)
- Guo-Cheng Liu
- College of Resource and Environment, Qingdao Agricultural University, Qingdao 266109, China
| | - Xin-Wang Zhang
- College of Resource and Environment, Qingdao Agricultural University, Qingdao 266109, China
| | - Shuai-Shuai Xin
- College of Resource and Environment, Qingdao Agricultural University, Qingdao 266109, China
| | - Qian-Wen Wang
- Instrumental Analysis Center of Qingdao Agricultural University, Qingdao 266109, China
| | - Qing-Hua Yan
- College of Resource and Environment, Qingdao Agricultural University, Qingdao 266109, China
| | - Cheng-Zhi Zhou
- College of Resource and Environment, Qingdao Agricultural University, Qingdao 266109, China
| | - Yan-Jun Xin
- College of Resource and Environment, Qingdao Agricultural University, Qingdao 266109, China
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Chen M, Sun Y, Niu J, Zhou H, Zhou Y, Chen X. As(V) adsorption by FeOOH@coal gangue composite from aqueous solution: performance and mechanisms. Environ Technol 2023:1-12. [PMID: 37609908 DOI: 10.1080/09593330.2023.2251655] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Accepted: 04/22/2023] [Indexed: 08/24/2023]
Abstract
Arsenic (As) pollution in water poses a significant threat to the ecological environment and human health. Meanwhile, the resource utilisation of coal gangue is of utmost importance in ecologically sustainable development. Thus, the FeOOH@coal gangue composite (FeOOH@CG) was synthesised for As(V) adsorption in this study. The results showed that α-FeOOH, β-FeOOH and Schwertmannite loaded on the surface of FeOOH@CG. Moreover, the adsorption behaviour of As(V) by FeOOH@CG was investigated under different reaction conditions, such as pH, contact time, initial concentration and co-existing anions. The optimum adsorption conditions were as follows: initial As(V) concentration of 60 mg/L, pH of 3.0 and adsorption time of 180-240 h. The adsorption capacity of FeOOH@CG for As(V) was pH-dependent and the maximum adsorption capacity was 185.94 mg/g. The presence of anions (H 2 PO 4 - , HCO 3 - and C l - ) decreased the adsorption efficiency of FeOOH@CG for As(V). The adsorption process of FeOOH@CG for As(V) could be well-described by the pseudo-second-order model and Langmuir model, indicating that the adsorption process mainly depended on chemical adsorption. The thermodynamic analysis suggested that the adsorption was a spontaneous and endothermic process. In addition, according to the analyses of XRD, FTIR and XPS, the dominant mechanisms of As(V) adsorption by FeOOH@CG were electrostatic attraction, complexation and precipitation. In conclusion, FeOOH@CG has great potential as an efficient and environmentally friendly adsorbent for As(V) adsorption from aqueous solution.
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Affiliation(s)
- Min Chen
- School of Earth and Environment, Anhui University of Science and Technology, Huainan, People's Republic of China
- Taizhou Institute of Zhejiang University, Zhejiang University, Taizhou, People's Republic of China
| | - Yuan Sun
- School of Earth and Environment, Anhui University of Science and Technology, Huainan, People's Republic of China
| | - Jingwei Niu
- School of Earth and Environment, Anhui University of Science and Technology, Huainan, People's Republic of China
| | - Hai Zhou
- School of Earth and Environment, Anhui University of Science and Technology, Huainan, People's Republic of China
| | - Yuzhi Zhou
- School of Earth and Environment, Anhui University of Science and Technology, Huainan, People's Republic of China
- Anhui Engineering Laboratory for Comprehensive Utilization of Water and Soil Resources & Ecological Protection in Mining Area with High Groundwater Level, Huainan, People's Republic of China
| | - Xiaoyang Chen
- School of Earth and Environment, Anhui University of Science and Technology, Huainan, People's Republic of China
- Anhui Engineering Laboratory for Comprehensive Utilization of Water and Soil Resources & Ecological Protection in Mining Area with High Groundwater Level, Huainan, People's Republic of China
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Asimi Neisiani A, Chehreh Chelgani S. Biodegradable acids for pyrite depression and green flotation separation - an overview. Crit Rev Biotechnol 2023:1-15. [PMID: 37599429 DOI: 10.1080/07388551.2023.2238885] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Revised: 06/05/2023] [Accepted: 06/27/2023] [Indexed: 08/22/2023]
Abstract
Exponential increasing demands for base metals have made meaningful processing of their quite low-grade (>1%) resources. Froth flotation is the most important physicochemical pretreatment technique for processing low-grade sulfide ores. In other words, flotation separation can effectively upgrade finely liberated base metal sulfides based on their surface properties. Various sulfide surface characters can be modified by flotation surfactants (collectors, activators, depressants, pH regulators, frothers, etc.). However, these reagents are mostly toxic. Therefore, using biodegradable flotation reagents would be essential for a green transition of ore treatment plants, while flotation circuits deal with massive volumes of water and materials. Pyrite, the most abundant sulfide mineral, is frequently associated with valuable minerals as a troublesome gangue. It causes severe technical and environmental difficulties. Thus, pyrite should be removed early in the beneficiation process to minimize its problematic issues. Recently, conventional inorganic pyrite depressants (such as cyanide, lime, and sulfur-oxy compounds) have been successfully assisted or even replaced with eco-friendly and green reagents (including polysaccharide-based substances and biodegradable acids). Yet, no comprehensive review is specified on the biodegradable acid depression reagents (such as tannic, lactic, humic acids, etc.) for pyrite removal through flotation separation. This study has comprehensively reviewed the previously conducted investigations in this area and provides suggestions for future assessments and developments. This robust review has systematically explored depression performance, various adsorption mechanisms, and aspects of these reagents on pyrite surfaces. Furthermore, factors affecting their efficiency were analyzed, and gaps within each area were highlighted.
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Affiliation(s)
- Ali Asimi Neisiani
- Department of Mining and Metallurgical Engineering, Yazd University, Yazd, Iran
| | - Saeed Chehreh Chelgani
- Minerals and Metallurgical Engineering, Swedish School of Mines, Department of Civil, Environmental and Natural Resources Engineering, Luleå University of Technology, Luleå, Sweden
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Wang H, Wu Y, Wen Y, Chen D, Pu J, Ding Y, Kong S, Wang S, Xu R. Simultaneously Cationic and Anionic Dyes Elimination via Magnetic Hydrochar Prepared from Copper Slag and Pinewood Sawdust. Toxics 2023; 11:484. [PMID: 37368584 DOI: 10.3390/toxics11060484] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Revised: 05/21/2023] [Accepted: 05/23/2023] [Indexed: 06/29/2023]
Abstract
In practical wastewater, cationic and anionic dyes usually coexist, while synergistic removal of these pollutants is difficult due to their relatively opposite properties. In this work, copper slag (CS) modified hydrochar (CSHC) was designed as functional material by the one-pot method. Based on characterizations, the Fe species in CS can be converted to zero-valent iron and loaded onto a hydrochar substrate. The CSHC exhibited efficient removal rates for both cationic dyes (methylene blue, MB) and anionic dyes (methyl orange, MO), with a maximum capacity of 278.21 and 357.02 mg·g-1, respectively, which was significantly higher than that of unmodified ones. The surface interactions of MB and MO between CSHC were mimicked by the Langmuir model and the pseudo-second-order model. In addition, the magnetic properties of CSHC were also observed, and the good magnetic properties enabled the adsorbent to be quickly separated from the solution with the help of magnets. The adsorption mechanisms include pore filling, complexation, precipitation, and electrostatic attraction. Moreover, the recycling experiments demonstrated the potential regenerative performance of CSHC. All these results shed light on the co-removal of cationic and anionic contaminates via these industrial by-products derived from environmental remediation materials.
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Affiliation(s)
- Huabin Wang
- School of Energy and Environment Science, Yunnan Normal University, Kunming 650500, China
| | - Yi Wu
- School of Energy and Environment Science, Yunnan Normal University, Kunming 650500, China
| | - Yi Wen
- School of Energy and Environment Science, Yunnan Normal University, Kunming 650500, China
| | - Dingxiang Chen
- School of Energy and Environment Science, Yunnan Normal University, Kunming 650500, China
| | - Jiang Pu
- Shiping Center for Rural Energy and Environment, Honghe 661400, China
| | - Yu Ding
- Baoshan City Longyang Rural Energy Workstation, Baoshan 678000, China
| | - Sailian Kong
- Development Center for Rural Affairs of Jiangchuan District, Yuxi 651100, China
| | - Shuaibing Wang
- College of Chemistry Biology and Environment, Yuxi Normal University, Yuxi 653100, China
| | - Rui Xu
- School of Energy and Environment Science, Yunnan Normal University, Kunming 650500, China
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Ke Y, Zhu X, Si S, Zhang T, Wang J, Zhang Z. A Novel Adsorbent of Attapulgite & Carbon Composites Derived from Spent Bleaching Earth for Synergistic Removal of Copper and Tetracycline in Water. Int J Environ Res Public Health 2023; 20:1573. [PMID: 36674334 PMCID: PMC9865348 DOI: 10.3390/ijerph20021573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Revised: 01/06/2023] [Accepted: 01/13/2023] [Indexed: 06/17/2023]
Abstract
Simultaneously eliminating tetracycline (TC) and copper (Cu-II) from wastewater was investigated by applying a novel adsorbent fabricated by transforming spent bleaching earth (SBE) into attapulgite & carbon composites (A&Cs). Pyrolysis temperature for A&Cs preparation exhibited a positive effect on Cu(II) adsorption, while the AC500 possessed the greatest performance for TC remediation. Interestingly, a synergistic effect instead of competitive adsorption occurred between Cu(II) and TC under the combined binary system, as both TC and Cu(II) adsorption amount on A&C500 increased more than that in the single system, which could be mainly attributed to the bridge actions between the TC and Cu(II). In addition, hydrogen bonding, ᴨ-ᴨ EDA interaction, pore-filling and complexation exerted significant roles in the adsorption process of TC and Cu(II). In general, this study offered a new perspective on the regeneration of livestock and poultry industry wastewater polluted with antibiotics and heavy metals.
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Affiliation(s)
- Yuxin Ke
- College of Urban and Environmental Science, Northwest University, Xi’an 710127, China
- Shaanxi Key Laboratory of Earth Surface System and Environment Carrying Capacity, Northwest University, Xi’an 710127, China
| | - Xiaoli Zhu
- College of Urban and Environmental Science, Northwest University, Xi’an 710127, China
- Shaanxi Key Laboratory of Earth Surface System and Environment Carrying Capacity, Northwest University, Xi’an 710127, China
| | - Shaocheng Si
- College of Urban and Environmental Science, Northwest University, Xi’an 710127, China
- Shaanxi Key Laboratory of Earth Surface System and Environment Carrying Capacity, Northwest University, Xi’an 710127, China
| | - Ting Zhang
- College of Urban and Environmental Science, Northwest University, Xi’an 710127, China
- Shaanxi Key Laboratory of Earth Surface System and Environment Carrying Capacity, Northwest University, Xi’an 710127, China
| | - Junqiang Wang
- College of Urban and Environmental Science, Northwest University, Xi’an 710127, China
- Xi’an Jinborui Ecological Tech. Co., Ltd., Xi’an 710065, China
| | - Ziye Zhang
- Xi’an Jinborui Ecological Tech. Co., Ltd., Xi’an 710065, China
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Liang S, Wang K, Wang K, Kou Y, Wang T, Guo C, Wang W, Wang J. Adsorption of Diclofenac Sodium by Aged Degradable and Non-Degradable Microplastics: Environmental Effects, Adsorption Mechanisms. Toxics 2022; 11:24. [PMID: 36668750 PMCID: PMC9863539 DOI: 10.3390/toxics11010024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 12/19/2022] [Accepted: 12/24/2022] [Indexed: 06/17/2023]
Abstract
Microplastics (MPs) are novel pollutants, which can carry toxic contaminants and are released in biota and accumulate. The adsorption behavior of MPs and aged MPs has attracted extensive attention. In this paper, the aging process of polystyrene (PS) and poly (butyleneadipate-co-terephthalate) (PBAT) plastics under ultraviolet (UV) irradiation at a high temperature and their adsorption properties for the contaminant diclofenac sodium (DCF) before and after aging was investigated. There are many factors affecting the adsorption capacity of MPs. In this experiment, three aspects of MPs, organic pollutants, and environmental factors are explored. The Freundlich model as well as the pseudosecondary kinetic model is more applicable to the process of DCF adsorption by MPs. The main effects of adsorption of organic pollutants by MPs are electrostatic interactions, hydrogen-halogen bonds, and hydrophobic interactions. The adsorption capacity of the UV-aged MPs on DCF is significantly enhanced, and the order of adsorption capacity is Q(A-PBAT) (27.65 mg/g) > Q (A-PS) (23.91 mg/g) > Q (PBAT) (9.30 mg/g) > Q (PS) (9.21 mg/g). The results show that more active sites are generated on the surface of MPs after aging, which can enhance their adsorption capacity for organic pollutants. This adsorption mechanism will increase their role as contaminant carriers in the aquatic food chain.
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Affiliation(s)
- Siqi Liang
- Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education & Xinjiang Uygur Autonomous Region, School of Chemical Engineering and Technology, Xinjiang University, Urumqi 830000, China
| | - Kangkang Wang
- Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education & Xinjiang Uygur Autonomous Region, School of Chemical Engineering and Technology, Xinjiang University, Urumqi 830000, China
| | - Kefu Wang
- Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education & Xinjiang Uygur Autonomous Region, School of Chemical Engineering and Technology, Xinjiang University, Urumqi 830000, China
| | - Yuli Kou
- Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education & Xinjiang Uygur Autonomous Region, School of Chemical Engineering and Technology, Xinjiang University, Urumqi 830000, China
| | - Tao Wang
- Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education & Xinjiang Uygur Autonomous Region, School of Chemical Engineering and Technology, Xinjiang University, Urumqi 830000, China
| | - Changyan Guo
- Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education & Xinjiang Uygur Autonomous Region, School of Chemical Engineering and Technology, Xinjiang University, Urumqi 830000, China
| | - Wei Wang
- Department of Chemistry and Centre for Pharmacy, University of Bergen, 5007 Bergen, Norway
| | - Jide Wang
- Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education & Xinjiang Uygur Autonomous Region, School of Chemical Engineering and Technology, Xinjiang University, Urumqi 830000, China
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Li T, He S, Shen T, Sun J, Sun C, Pan H, Yu D, Lu W, Li R, Zhang E, Lu X, Fan Y, Gao G. Using One-Step Acid Leaching for the Recovering of Coal Gasification Fine Slag as Functional Adsorbents: Preparation and Performance. Int J Environ Res Public Health 2022; 19:12851. [PMID: 36232151 PMCID: PMC9564584 DOI: 10.3390/ijerph191912851] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Revised: 09/16/2022] [Accepted: 10/03/2022] [Indexed: 06/16/2023]
Abstract
Coal gasification fine slag (FS), a kind of by-product of coal chemical industry, was recovered for the preparation of functional adsorbents by acid leaching process, which was orthogonally optimized by HCl, HNO3, HF, HAc, and H2SO4. Methylene blue (MB) was used to evaluate the performance of functional adsorbents. The results demonstrated that 57.6% of the leaching efficiency (RLE) and 162.94 mg/g of adsorption capacity (CAC) of MB were achieved under the optimal conditions of HNO3 of 2.0 mol/L, acid leaching time of 2.0 h, and acid leaching temperature of 293K. The detections on X-ray Diffraction (XRD), Scanning Electron Microscope (SEM), Fourier Transform Infrared Spectroscopy (FTIR), and BET surface area (SBET) indicated that the synthesized functional adsorbents were characterized by mesoporous materials. The good fitting of adsorption process using pseudo-second-order and Langmuir models demonstrated that the chemisorption contributed to MB removal. The results of thermodynamics further revealed that the adsorption process of MB occurred spontaneously due to the exothermic properties. The work is expected to develop a novel and cost-effective strategy for the safe disposal of FS, and potentially offer an alternative pathway to increase the additional value for the coal chemical industry.
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Affiliation(s)
- Tianpeng Li
- School of Environmental Science and Engineering, State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China
| | - Shaocang He
- School of Environmental Science and Engineering, State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China
| | - Tingting Shen
- School of Environmental Science and Engineering, State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China
| | - Jing Sun
- School of Environmental Science and Engineering, State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China
| | - Chenxu Sun
- School of Environmental Science and Engineering, State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China
| | - Haoqi Pan
- School of Environmental Science and Engineering, State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China
| | - Dehai Yu
- School of Environmental Science and Engineering, State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China
| | - Wenxue Lu
- Yankuang National Engineering Research Center of Coal Water Slurry Gasification and Coal Chemical Industry Co., Ltd., Jinan 250000, China
| | - Runyao Li
- School of Environmental Science and Engineering, State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China
| | - Enshan Zhang
- School of Environmental Science and Engineering, State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China
| | - Xuqian Lu
- School of Environmental Science and Engineering, State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China
| | - Yuxuan Fan
- School of Environmental Science and Engineering, State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China
| | - Guiyue Gao
- School of Environmental Science and Engineering, State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China
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11
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Chen Q, Zhang TC, Ouyang L, Yuan S. Single-Step Hydrothermal Synthesis of Biochar from H 3PO 4-Activated Lettuce Waste for Efficient Adsorption of Cd(II) in Aqueous Solution. Molecules 2022; 27:269. [PMID: 35011500 PMCID: PMC8746578 DOI: 10.3390/molecules27010269] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Revised: 12/27/2021] [Accepted: 12/29/2021] [Indexed: 11/17/2022] Open
Abstract
Developing an ideal and cheap adsorbent for adsorbing heavy metals from aqueous solution has been urgently need. In this study, a novel, effective and low-cost method was developed to prepare the biochar from lettuce waste with H3PO4 as an acidic activation agent at a low-temperature (circa 200 °C) hydrothermal carbonization process. A batch adsorption experiment demonstrated that the biochar reaches the adsorption equilibrium within 30 min, and the optimal adsorption capacity of Cd(II) is 195.8 mg∙g-1 at solution pH 6.0, which is significantly improved from circa 20.5 mg∙g-1 of the original biochar without activator. The fitting results of the prepared biochar adsorption data conform to the pseudo-second-order kinetic model (PSO) and the Sips isotherm model, and the Cd(II) adsorption is a spontaneous and exothermic process. The hypothetical adsorption mechanism is mainly composed of ion exchange, electrostatic attraction, and surface complexation. This work offers a novel and low-temperature strategy to produce cheap and promising carbon-based adsorbents from organic vegetation wastes for removing heavy metals in aquatic environment efficiently.
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Affiliation(s)
- Quyun Chen
- Low-Carbon Technology & Chemical Reaction Engineering Lab, College of Chemical Engineering, Sichuan University, Chengdu 610065, China; (Q.C.); (L.O.)
| | - Tian C. Zhang
- Civil & Environmental Engineering Department, University of Nebraska-Lincoln, Omaha, NE 68182-0178, USA;
| | - Like Ouyang
- Low-Carbon Technology & Chemical Reaction Engineering Lab, College of Chemical Engineering, Sichuan University, Chengdu 610065, China; (Q.C.); (L.O.)
| | - Shaojun Yuan
- Low-Carbon Technology & Chemical Reaction Engineering Lab, College of Chemical Engineering, Sichuan University, Chengdu 610065, China; (Q.C.); (L.O.)
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12
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Yang D, Gao P, Ren X, Niu Y, Wu Z, Gu Z, Peng H. The role of solvents and oxygen-containing functional groups on the adsorption of Bisphenol A on carbon nanotubes. Environ Technol 2021; 42:4260-4268. [PMID: 32249723 DOI: 10.1080/09593330.2020.1752815] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Accepted: 03/14/2020] [Indexed: 06/11/2023]
Abstract
The wide application of endocrine disruptors (EDs) has recently created great public concerns because of their toxicities. Previous studies have stated that the effect of oxygen-containing functional groups of carbon nanotubes (CNTs) for Bisphenol A (BPA) sorption, but no study has been quantified the exact contribution of the oxygen-containing functional groups. Moreover, the role of solvents on the adsorption of BPA should be considered. Considering the well properties of CNTs, graphitized (MG), carboxylated (MC) and hydroxylated (MH) multi-walled CNTs were selected as model adsorbents, BPA was used as model adsorbate. Solubility and single point adsorption coefficient (logKd) of BPA were n-hexadecane > water > methanol, suggesting that hydrophobic interaction was the main mechanism for BPA sorption on CNTs. For different functional groups of CNTs, π-π interaction between MH and BPA may be stronger than that of MC, and thus the sorption of BPA on MH was higher than that of MC. Moreover, hydrogen bond resulted in the higher adsorption of BPA on MH when compared with MC. The oxygen-containing functional groups of CNTs played a key role for BPA sorption in methanol because the values of contribution were 20%-45% for -OH and were 5%-25% for -COOH. In n-hexadecane, other factors such as hydrophobic interactions should be considered because the contribution percentages of -OH were ca.15% and the values for -COOH were ca.10%. The results are expected to provide important information on the interaction of EDs and CNTs.
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Affiliation(s)
- Dong Yang
- Faculty of Agriculture and Food, Kunming University of Science & Technology, Kunming, People's Republic of China
| | - Peng Gao
- City College, Kunming University of Science & Technology, Kunming, People's Republic of China
| | - Xin Ren
- Faculty of Agriculture and Food, Kunming University of Science & Technology, Kunming, People's Republic of China
| | - Yifan Niu
- Faculty of Agriculture and Food, Kunming University of Science & Technology, Kunming, People's Republic of China
| | - Zhenfen Wu
- Faculty of Agriculture and Food, Kunming University of Science & Technology, Kunming, People's Republic of China
| | - Zhenggang Gu
- Faculty of Civil Engineering and Mechanics, Kunming University of Science & Technology, Kunming, People's Republic of China
| | - Hongbo Peng
- Faculty of Agriculture and Food, Kunming University of Science & Technology, Kunming, People's Republic of China
- Yunnan Key Lab of Soil Carbon Sequestration and Pollution Control, Kunming, People's Republic of China
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13
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Sung Hee Joo, Yejin Liang, Minbeom Kim, Jaehyun Byun, Heechul Choi. Microplastics with adsorbed contaminants: Mechanisms and Treatment. Environmental Challenges 2021; 3. [PMID: 37521158 PMCID: PMC9767417 DOI: 10.1016/j.envc.2021.100042] [Citation(s) in RCA: 52] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
Plastic pollution has been a significant and widespread global issue, and the recent COVID-19 pandemic has been attributed to its worsening effect as plastics have been contaminated with the deadly infectious virus. Microplastics (MPs) may have played a role as a vector that carries hazardous microbes such as emerging bacterial threats (i.e. antibiotic resistant bacteria) and deadly viruses (e.g., coronavirus); this causes great concern over microplastics contaminated with emerging contaminants. Mitigation and treatment of MPs are challenging because of a range of factors including but not limited to physicochemical properties and composition of MPs and pH and salinity of the solution. Despite the heterogeneous nature of aquatic systems, research has overlooked interactions between contaminants and MPs under environmental conditions, degradation pathways of MPs with adsorbed contaminants, and, especially, the role of adsorbed contaminants in the efficiency of MP treatment through membrane filtration, in comparison with other treatment methods. This review aims to (1) analyze an assortment of factors that could influence the removal of MPs and mechanisms of contaminant adsorption on MPs, (2) identify mechanisms influencing membrane filtration of MPs, (3) examine the fate and transport of MPs with adsorbed contaminants, (4) evaluate membrane filtration of contaminant-adsorbing MPs in comparison to other treatment methods, and (5) draw conclusions and the future outlook based on a literature analysis.
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Key Words
- adsorption mechanisms
- contaminants
- microplastics
- membrane filtration
- ddt, dichloro-diphenyl-trichloroethane
- dm, dynamic membrane
- edcs, endocrine-disrupting compounds
- fosa or pfosa, perfluorooctane sulfonamide
- gac, granular activated carbon
- hdpe, high-density polyethylene
- ldpe, low-density pe
- mf, microfiltration
- mps, microplastics
- mbr, membrane bioreactor
- nf, nanofiltration
- nom, natural organic matter
- nps, nanoplastics
- om, organic matter
- pas, polyacrylates
- pa, polyamide (nylon)
- pahs, polycyclic aromatic hydrocarbons
- pbdes, polybrominated diphenyl ethers
- pcbs, polychlorinated biphenyls
- pe, polyethylene
- pet, polyethylene terephthalate
- pfcs, perfluorinated compounds
- pfcas, perfluorinated carboxylates
- pfoa, perfluorooctanoic acid
- pfos, perfluorooctanesulfonic acid
- pfas, per-/poly-fluoroalkyl substances
- pfhxa, perfluorohexanoic acid
- pops, persistent organic pollutants
- ppcps, pharmaceuticals and personal care products
- pp, polypropylene
- ps, polystyrene
- pvc, polyvinyl chloride
- pvdf, polyvinylidene fluoride
- ro, reverse osmosis
- sr, synthetic rubber
- tmp, trans membrane pressure
- uf, ultrafiltration
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Mohamed A, Sanchez EPV, Bogdanova E, Bergfeldt B, Mahmood A, Ostvald RV, Hashem T. Efficient Fluoride Removal from Aqueous Solution Using Zirconium-Based Composite Nanofiber Membranes. Membranes (Basel) 2021; 11:147. [PMID: 33672530 PMCID: PMC7923772 DOI: 10.3390/membranes11020147] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Revised: 02/17/2021] [Accepted: 02/17/2021] [Indexed: 11/16/2022]
Abstract
Herein, composite nanofiber membranes (CNMs) derived from UiO-66 and UiO-66-NH2 Zr-metal-organic frameworks (MOFs) were successfully prepared, and they exhibited high performance in adsorptive fluoride removal from aqueous media. The resultant CNMs were confirmed using different techniques, such as X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), and Brunauer-Emmett-Teller (BET) in addition to Fourier-transform infrared spectroscopy (FTIR). The parameters that govern the fluoride adsorption were evaluated, including adsorbent dose, contact time, and pH value, in addition to initial concentration. The crystalline structures of CNMs exhibited high hydrothermal stability and remained intact after fluoride adsorption. It could also be observed that the adsorbent dose has a significant effect on fluoride removal at high alkaline values. The results show that UiO-66-NH2 CNM exhibited high fluoride removal due to electrostatic interactions that strongly existed between F- and metal sites in MOF in addition to hydrogen bonds formed with MOF amino groups. The fluoride removal efficiency reached 95% under optimal conditions of 20 mg L-1, pH of 8, and 40% adsorbent dose at 60 min. The results revealed that UiO-66-NH2 CNM possesses a high maximum adsorption capacity (95 mg L-1) over UiO-66 CNM (75 mg L-1), which exhibited better fitting with the pseudo-second-order model. Moreover, when the initial fluoride concentration increased from 20 to 100 mg/L, fluoride adsorption decreased by 57% (UiO-66 CNM) and 30% (UiO-66-NH2 CNM) after 60 min. After three cycles, CNM revealed the regeneration ability, demonstrating that UiO-66-NH2 CNMs are auspicious adsorbents for fluoride from an aqueous medium.
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Affiliation(s)
- Alaa Mohamed
- Institute of Functional Interfaces (IFG), Karlsruhe Institute of Technology (KIT), Hermann-von Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany; (E.P.V.S.); (A.M.)
- Egypt Nanotechnology Center, EGNC, Cairo University, Giza 12613, Egypt
| | - Elvia P. Valadez Sanchez
- Institute of Functional Interfaces (IFG), Karlsruhe Institute of Technology (KIT), Hermann-von Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany; (E.P.V.S.); (A.M.)
| | - Evgenia Bogdanova
- School of Nuclear Science and Engineering, National Research Tomsk Polytechnic University, 634050 Tomsk, Russia; (E.B.); (R.V.O.)
| | - Britta Bergfeldt
- Institute for Technical Chemistry (ITC), Karlsruhe Institute for Technology (KIT), Hermann-von Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany;
| | - Ammar Mahmood
- Institute of Functional Interfaces (IFG), Karlsruhe Institute of Technology (KIT), Hermann-von Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany; (E.P.V.S.); (A.M.)
| | - Roman V. Ostvald
- School of Nuclear Science and Engineering, National Research Tomsk Polytechnic University, 634050 Tomsk, Russia; (E.B.); (R.V.O.)
| | - Tawheed Hashem
- Institute of Functional Interfaces (IFG), Karlsruhe Institute of Technology (KIT), Hermann-von Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany; (E.P.V.S.); (A.M.)
- International X-ray Optics Lab, Institute of Physics and Technology, National Research Tomsk Polytechnic University (TPU), 30 Lenin Ave., 634050 Tomsk, Russia
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15
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Qu P, Li Y, Huang H, Chen J, Yu Z, Huang J, Wang H, Gao B. Urea formaldehyde modified alginate beads with improved stability and enhanced removal of Pb 2+, Cd 2+, and Cu 2. J Hazard Mater 2020; 396:122664. [PMID: 32339875 DOI: 10.1016/j.jhazmat.2020.122664] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Revised: 03/23/2020] [Accepted: 04/04/2020] [Indexed: 06/11/2023]
Abstract
Urea formaldehyde (UF) was grafted onto the backbone of alginate to prepare microbeads as an adsorbent for the removal of heavy metal ions from aqueous solutions. The expensive alginate was crosslinked with cheaper UF at different ratios (1: 2.5∼1: 12.5) to produce sturdy alginate-UF beads at lower cost. Characterization results showed that UF modification enhanced the pore network and structural stability of the beads, which can be attributed to the reduced intermolecular forces and plentiful of nitrogen and oxygen donor atoms of the beads. The swelling of air-dried alginate-UF beads in different solutions was much lower than that of the unmodified alginate beads, confirming the improved stability. The replacement of alginate with UF at different ratios either did not affect or increased the adsorption of heavy metal ions (Pb2+, Cd2+, and Cu2+) on the beads. For example, the adsorption capacities of Pb2+, Cd2+, and Cu2+ on air-dried alginate-UF (1: 2.5) beads were 1.66, 0.61, and 0.80 mmol/g, which were 39.88%, 9.29%, and 9.52% higher than those of the corresponding unmodified alginate beads, respectively. The adsorption of heavy metals on the alginate-UF beads was mainly controlled by ion exchange, complexation, and electrostatic interaction mechanisms.
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Affiliation(s)
- Ping Qu
- Recycling Agriculture Research Center, Jiangsu Academy of Agricultural Sciences, Key laboratory of Crop and livestock Integrated Farming, Ministry of Agriculture, Nanjing, China; Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization, Nanjing, Jiangsu Province, 210014, China; Department of Agricultural and Biological Engineering, University of Florida, Gainesville, FL, 32606, USA; Soil and Water Science Department, Tropical Research and Education Center, University of Florida, Homestead, FL, 33031, USA
| | - Yuncong Li
- Soil and Water Science Department, Tropical Research and Education Center, University of Florida, Homestead, FL, 33031, USA
| | - Hongying Huang
- Recycling Agriculture Research Center, Jiangsu Academy of Agricultural Sciences, Key laboratory of Crop and livestock Integrated Farming, Ministry of Agriculture, Nanjing, China; Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization, Nanjing, Jiangsu Province, 210014, China
| | - Jianjun Chen
- Mid-Florida Research & Education Center, University of Florida, Apopka, FL, 32703, USA
| | - Zebin Yu
- School of Resources, Environment and Materials, Guangxi University, Nanning, 530004, China
| | - Jun Huang
- Hualan Design & Consulting Group Co. Ltd., Nanning, 530011, China; College of Civil Engineering and Architecture Guangxi University, Nanning, 530004, China
| | - Hailong Wang
- School of Environmental and Chemical Engineering, Foshan University, Foshan, Guangdong, 528000, China; Key Laboratory of Soil Contamination Bioremediation of Zhejiang Province, Zhejiang A&F University, Hangzhou, Zhejiang, 311300, China
| | - Bin Gao
- Department of Agricultural and Biological Engineering, University of Florida, Gainesville, FL, 32606, USA.
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16
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Vikrant K, Deng YX, Kim KH, Younis SA, Boukhvalov DW, Ahn WS, Deep A. Application of Zr-Cluster-Based MOFs for the Adsorptive Removal of Aliphatic Aldehydes (C 1 to C 5) from an Industrial Solvent. ACS Appl Mater Interfaces 2019; 11:44270-44281. [PMID: 31690072 DOI: 10.1021/acsami.9b15220] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Metal-organic frameworks (MOFs) are recognized as advanced sorbents for the effective removal and recovery of various hazardous pollutants in liquid and gaseous environments. In this research, the potential applicability of two Zr-based MOFs (UiO-66 (U6) and its amine counterpart UiO-66-NH2 (U6N)) was investigated relative to activated carbon (AC, tested as a reference adsorbent) for the purification of industrial organic solvents (e.g., methanol) from six different carbonyl impurities (CCs (C1 to C5): formaldehyde (FA, CH2O), acetaldehyde (AA, CH3CHO), propionaldehyde (PA, C3H6O), butyraldehyde (BA, C4H8O), isovaleraldehyde (IA, C5H10O), and valeraldehyde (VA, C5H10O)). In the sorptive removal of these CCs (both individually and in binary mixtures with FA), U6N showed higher efficacy in capturing all of the target CCs than U6 and AC. The adsorption selectivity of U6N toward single CC compounds was in the order of PA (165.1 mg g-1) > BA (158.9 mg g-1) > IA (154 mg g-1) > AA (136 mg g-1) > VA (131.5 mg g-1) > FA (120 mg g-1). In all binary mixtures, U6N selectively captured FA over the heavier CCs (C2-C5) by 1.5-3.3 times due to the steric hindrance of the C2-C5 aliphatic tails in the pore diffusion mechanism. The preferential adsorption of FA onto U6N can also be accounted for by the contribution of chemical bonding (Schiff base interaction) between the -NH2 groups in U6N and the C═O functionalities (aldehyde molecules) and physisorption, as confirmed by density functional theory (DFT) calculations. Theoretical DFT simulations also revealed that the competition between aldehyde molecules for Brønsted acidic sites (μ3-OH of Zr-clusters) created minor distortions in the U6/U6N frameworks.
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Affiliation(s)
- Kumar Vikrant
- Department of Civil and Environmental Engineering , Hanyang University , 222 Wangsimni-Ro , Seoul 04763 , Republic of Korea
| | - Ya-Xin Deng
- Science and Technology on Reactor System Design Technology Laboratory , Nuclear Power Institution of China , Chengdu 610213 , China
| | - Ki-Hyun Kim
- Department of Civil and Environmental Engineering , Hanyang University , 222 Wangsimni-Ro , Seoul 04763 , Republic of Korea
| | - Sherif A Younis
- Department of Civil and Environmental Engineering , Hanyang University , 222 Wangsimni-Ro , Seoul 04763 , Republic of Korea
- Analysis and Evaluation Department , Egyptian Petroleum Research Institute (EPRI) , Nasr City, Cairo 11727 , Egypt
| | - Danil W Boukhvalov
- College of Science, Institute of Materials Physics and Chemistry , Nanjing Forestry University , Nanjing 210037 , China
- Theoretical Physics and Applied Mathematics Department , Ural Federal University , Mira Street 19 , Yekaterinburg 620002 , Russia
| | - Wha-Seung Ahn
- Department of Chemistry and Chemical Engineering , Inha University , Incheon 402-751 , Republic of Korea
| | - Akash Deep
- Nanoscience and Nanotechnology Lab , Central Scientific Instruments Organization (CSIR-CSIO) , Sector 30 C , Chandigarh 160030 , India
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17
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Tran TV, Nguyen DTC, Le HTN, Bach LG, Vo DVN, Lim KT, Nong LX, Nguyen TD. Combined Minimum-Run Resolution IV and Central Composite Design for Optimized Removal of the Tetracycline Drug Over Metal⁻Organic Framework-Templated Porous Carbon. Molecules 2019; 24:E1887. [PMID: 31100932 PMCID: PMC6571721 DOI: 10.3390/molecules24101887] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Revised: 04/25/2019] [Accepted: 05/07/2019] [Indexed: 12/18/2022] Open
Abstract
In this study, a minimum-run resolution IV and central composite design have been developed to optimize tetracycline removal efficiency over mesoporous carbon derived from the metal-organic framework MIL-53 (Fe) as a self-sacrificial template. Firstly, minimum-run resolution IV, powered by the Design-Expert program, was used as an efficient and reliable screening study for investigating a set of seven factors, these were: tetracycline concentration (A: 5-15 mg/g), dose of mesoporous carbons (MPC) (B: 0.05-0.15 g/L), initial pH level (C: 2-10), contact time (D: 1-3 h), temperature (E: 20-40 °C), shaking speed (F: 150-250 rpm), and Na+ ionic strength (G: 10-90 mM) at both low (-1) and high (+1) levels, for investigation of the data ranges. The 20-trial model was analyzed and assessed by Analysis of Variance (ANOVA) data, and diagnostic plots (e.g., the Pareto chart, and half-normal and normal probability plots). Based on minimum-run resolution IV, three factors, including tetracycline concentration (A), dose of MPC (B), and initial pH (C), were selected to carry out the optimization study using a central composite design. The proposed quadratic model was found to be statistically significant at the 95% confidence level due to a low P-value (<0.05), high R2 (0.9078), and the AP ratio (11.4), along with an abundance of diagnostic plots (3D response surfaces, Cook's distance, Box-Cox, DFFITS, Leverage versus run, residuals versus runs, and actual versus predicted). Under response surface methodology-optimized conditions (e.g., tetracycline concentration of 1.9 mg/g, MPC dose of 0.15 g/L, and pH level of 3.9), the highest tetracycline removal efficiency via confirmation tests reached up to 98.0%-99.7%. Also, kinetic intraparticle diffusion and isotherm models were systematically studied to interpret how tetracycline molecules were absorbed on an MPC structure. In particular, the adsorption mechanisms including "electrostatic attraction" and "π-π interaction" were proposed.
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Affiliation(s)
- Thuan Van Tran
- Center of Excellence for Green Energy and Environmental Nanomaterials (CE@GrEEN), Nguyen Tat Thanh University, 300A Nguyen Tat Thanh, District 4, Ho Chi Minh City 755414, Vietnam.
- NTT Hi-Tech Institute, Nguyen Tat Thanh University, 300A Nguyen Tat Thanh, District 4, Ho Chi Minh City 755414, Vietnam.
| | - Duyen Thi Cam Nguyen
- Center of Excellence for Green Energy and Environmental Nanomaterials (CE@GrEEN), Nguyen Tat Thanh University, 300A Nguyen Tat Thanh, District 4, Ho Chi Minh City 755414, Vietnam.
- NTT Hi-Tech Institute, Nguyen Tat Thanh University, 300A Nguyen Tat Thanh, District 4, Ho Chi Minh City 755414, Vietnam.
- Department of Pharmacy, Nguyen Tat Thanh University, 298⁻300A Nguyen Tat Thanh, Ward 13, District 4, Ho Chi Minh City 700000, Vietnam.
| | - Hanh T N Le
- Institute of Hygiene and Public Health, 159 Hung Phu, Ward 8, District 8, Ho Chi Minh City 700000, Vietnam.
| | - Long Giang Bach
- NTT Hi-Tech Institute, Nguyen Tat Thanh University, 300A Nguyen Tat Thanh, District 4, Ho Chi Minh City 755414, Vietnam.
- Center of Excellence for Functional Polymers and Nano-Engineering, Nguyen Tat Thanh University, 300A Nguyen Tat Thanh, District 4, Ho Chi Minh City 755414, Vietnam.
| | - Dai-Viet N Vo
- Center of Excellence for Green Energy and Environmental Nanomaterials (CE@GrEEN), Nguyen Tat Thanh University, 300A Nguyen Tat Thanh, District 4, Ho Chi Minh City 755414, Vietnam.
- Faculty of Chemical & Natural Resources Engineering, University Malaysia Pahang, Lebuhraya Tun Razak, 26300 Gambang, Kuantan, Pahang, Malaysia.
| | - Kwon Taek Lim
- Department of Display Engineering, Pukyong National University, Nam-Gu, Busan 608-737, Korea.
| | - Linh Xuan Nong
- Center of Excellence for Green Energy and Environmental Nanomaterials (CE@GrEEN), Nguyen Tat Thanh University, 300A Nguyen Tat Thanh, District 4, Ho Chi Minh City 755414, Vietnam.
- NTT Hi-Tech Institute, Nguyen Tat Thanh University, 300A Nguyen Tat Thanh, District 4, Ho Chi Minh City 755414, Vietnam.
| | - Trinh Duy Nguyen
- Center of Excellence for Green Energy and Environmental Nanomaterials (CE@GrEEN), Nguyen Tat Thanh University, 300A Nguyen Tat Thanh, District 4, Ho Chi Minh City 755414, Vietnam.
- NTT Hi-Tech Institute, Nguyen Tat Thanh University, 300A Nguyen Tat Thanh, District 4, Ho Chi Minh City 755414, Vietnam.
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18
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Brouns T, De Keersmaecker H, Konrad SF, Kodera N, Ando T, Lipfert J, De Feyter S, Vanderlinden W. Free Energy Landscape and Dynamics of Supercoiled DNA by High-Speed Atomic Force Microscopy. ACS Nano 2018; 12:11907-11916. [PMID: 30346700 DOI: 10.1021/acsnano.8b06994] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
DNA supercoiling fundamentally constrains and regulates the storage and use of genetic information. While the equilibrium properties of supercoiled DNA are relatively well understood, the dynamics of supercoils are much harder to probe. Here we use atomic force microscopy (AFM) imaging to demonstrate that positively supercoiled DNA plasmids, in contrast to their negatively supercoiled counterparts, preserve their plectonemic geometry upon adsorption under conditions that allow for dynamics and equilibration on the surface. Our results are in quantitative agreement with a physical polymer model for supercoiled plasmids that takes into account the known mechanical properties and torque-induced melting of DNA. We directly probe supercoil dynamics using high-speed AFM imaging with subsecond time and ∼nanometer spatial resolution. From our recordings we quantify self-diffusion, branch point flexibility, and slithering dynamics and demonstrate that reconfiguration of molecular extensions is predominantly governed by the bending flexibility of plectoneme arms. We expect that our methodology can be an asset to probe protein-DNA interactions and topochemical reactions on physiological relevant DNA length and supercoiling scales by high-resolution AFM imaging.
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Affiliation(s)
- Tine Brouns
- KU Leuven, Division of Molecular Imaging and Photonics , Celestijnenlaan 200F , 3001 Leuven , Belgium
| | - Herlinde De Keersmaecker
- KU Leuven, Division of Molecular Imaging and Photonics , Celestijnenlaan 200F , 3001 Leuven , Belgium
| | - Sebastian F Konrad
- Department of Physics , Nanosystems Initiative Munich, and Center for NanoScience , LMU Munich, Amalienstrasse 54 , 80799 Munich , Germany
| | - Noriyuki Kodera
- Nano-Life Science Institute (WPI-NanoLSI) , Kanazawa University , Kakuma-machi , Kanazawa , 920-1192 , Japan
| | - Toshio Ando
- Nano-Life Science Institute (WPI-NanoLSI) , Kanazawa University , Kakuma-machi , Kanazawa , 920-1192 , Japan
| | - Jan Lipfert
- Department of Physics , Nanosystems Initiative Munich, and Center for NanoScience , LMU Munich, Amalienstrasse 54 , 80799 Munich , Germany
| | - Steven De Feyter
- KU Leuven, Division of Molecular Imaging and Photonics , Celestijnenlaan 200F , 3001 Leuven , Belgium
| | - Willem Vanderlinden
- KU Leuven, Division of Molecular Imaging and Photonics , Celestijnenlaan 200F , 3001 Leuven , Belgium
- Department of Physics , Nanosystems Initiative Munich, and Center for NanoScience , LMU Munich, Amalienstrasse 54 , 80799 Munich , Germany
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Jully V, Mathot F, Moniotte N, Préat V, Lemoine D. Mechanisms of Antigen Adsorption Onto an Aluminum-Hydroxide Adjuvant Evaluated by High-Throughput Screening. J Pharm Sci 2017; 105:1829-1836. [PMID: 27238481 DOI: 10.1016/j.xphs.2016.03.032] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2015] [Revised: 02/27/2016] [Accepted: 03/22/2016] [Indexed: 02/05/2023]
Abstract
The adsorption mechanism of antigen on aluminum adjuvant can affect antigen elution at the injection site and hence the immune response. Our aim was to evaluate adsorption onto aluminum hydroxide (AH) by ligand exchange and electrostatic interactions of model proteins and antigens, bovine serum albumin (BSA), β-casein, ovalbumin (OVA), hepatitis B surface antigen, and tetanus toxin (TT). A high-throughput screening platform was developed to measure adsorption isotherms in the presence of electrolytes and ligand exchange by a fluorescence-spectroscopy method that detects the catalysis of 6,8-difluoro-4-methylumbelliferyl phosphate by free hydroxyl groups on AH. BSA adsorption depended on predominant electrostatic interactions. Ligand exchange contributes to the adsorption of β-casein, OVA, hepatitis B surface antigen, and TT onto AH. Based on relative surface phosphophilicity and adsorption isotherms in the presence of phosphate and fluoride, the capacities of the proteins to interact with AH by ligand exchange followed the trend: OVA < β-casein < BSA < TT. This could be explained by both the content of ligands available in the protein structure for ligand exchange and the antigen's molecular weight. The high-throughput screening platform can be used to better understand the contributions of ligand exchange and electrostatic attractions governing the interactions between an antigen adsorbed onto aluminum-containing adjuvant.
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Affiliation(s)
- Vanessa Jully
- Université Catholique de Louvain, Louvain Drug Research Institute, Advanced Drug Delivery and Biomaterials, Brussels 1200, Belgium; GSK Vaccines, Vaccine Discovery and Development, Rixensart 1330, Belgium
| | - Frédéric Mathot
- GSK Vaccines, Vaccine Discovery and Development, Rixensart 1330, Belgium
| | - Nicolas Moniotte
- GSK Vaccines, Vaccine Discovery and Development, Rixensart 1330, Belgium
| | - Véronique Préat
- Université Catholique de Louvain, Louvain Drug Research Institute, Advanced Drug Delivery and Biomaterials, Brussels 1200, Belgium.
| | - Dominique Lemoine
- GSK Vaccines, Vaccine Discovery and Development, Rixensart 1330, Belgium
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Wang H, Shen S, Liu L, Ji Y, Wang F. Effective adsorption of phosphate from wastewaters by big composite pellets made of reduced steel slag and iron ore concentrate. Environ Technol 2015; 36:2835-2846. [PMID: 26038973 DOI: 10.1080/09593330.2015.1050069] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2014] [Accepted: 04/21/2015] [Indexed: 06/04/2023]
Abstract
In order to remove phosphate from wastewater, a large plastic adsorption column filled with big phosphate-adsorbing pellets with diameters of 10 mm, heated by electromagnetic induction coils, was conceived. It was found that the prepared big pellets, which were made of reduced steel slag and iron ore concentrate, contain magnetic Fe and Fe3O4. The thermodynamics and kinetics of adsorption of phosphate from synthetic wastewaters on the pellets were studied in this work. The phosphate adsorption on the pellets followed three models of Freundlich, Langmuir and Dubinin-Kaganer-Radushkevick. The maximum phosphate adsorption capacity Qmax of the pellets were 2.46, 2.74 and 2.77 mg/g for the three temperatures of 20°C, 30°C and 40°C, respectively, based on the Langmuir model. The apparent adsorption energies were -12.9 kJ/mol for the three temperatures. It implied that ion exchange was the main mechanism involved in the adsorption processes. The adsorbed phosphate existed on the pellet surface mainly in the form of Fe3(PO4)2. A reduction pre-treatment of the pellet precursor with H2 greatly enhanced pellet adsorption for phosphate. The adsorption kinetics is better represented by a pseudo-first-order model. The adsorbed phosphate amounts were similar for both real and synthetic wastewaters under similar adsorption conditions. The percentage of adsorbed phosphate for a real wastewater increased with increasing pellet concentration and reached 99.2% at a pellet concentration of 64 (g/L). Some specific phosphate adsorption mechanisms for the pellets were revealed and the pellets showed the potential to efficiently adsorb phosphate from a huge amount of real wastewaters in an industrial scale.
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Affiliation(s)
- Hongjuan Wang
- a State Key Laboratory of Advanced Metallurgy , University of Science and Technology Beijing , Beijing 100083 , People's Republic of China
- b School of Metallurgical and Ecological Engineering , University of Science and Technology Beijing , Beijing 100083 , People's Republic of China
| | - Shaobo Shen
- a State Key Laboratory of Advanced Metallurgy , University of Science and Technology Beijing , Beijing 100083 , People's Republic of China
- b School of Metallurgical and Ecological Engineering , University of Science and Technology Beijing , Beijing 100083 , People's Republic of China
| | - Longhui Liu
- a State Key Laboratory of Advanced Metallurgy , University of Science and Technology Beijing , Beijing 100083 , People's Republic of China
- b School of Metallurgical and Ecological Engineering , University of Science and Technology Beijing , Beijing 100083 , People's Republic of China
| | - Yilong Ji
- a State Key Laboratory of Advanced Metallurgy , University of Science and Technology Beijing , Beijing 100083 , People's Republic of China
- b School of Metallurgical and Ecological Engineering , University of Science and Technology Beijing , Beijing 100083 , People's Republic of China
| | - Fuming Wang
- a State Key Laboratory of Advanced Metallurgy , University of Science and Technology Beijing , Beijing 100083 , People's Republic of China
- b School of Metallurgical and Ecological Engineering , University of Science and Technology Beijing , Beijing 100083 , People's Republic of China
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Andreu N, Flahaut D, Dedryvère R, Minvielle M, Martinez H, Gonbeau D. XPS investigation of surface reactivity of electrode materials: effect of the transition metal. ACS Appl Mater Interfaces 2015; 7:6629-6636. [PMID: 25751495 DOI: 10.1021/am5089764] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The role of the transition metal nature and Al2O3 coating on the surface reactivity of LiCoO2 and LiNi(1/3)Mn(1/3)Co(1/3)O2 (NMC) materials were studied by coupling chemisorption of gaseous probes molecules and X-ray photoelectron (XPS) spectroscopy. The XPS analyses have put in evidence the low reactivity of the LiMO2 materials toward basic gaseous probe (NH3). The reactivity toward SO2 gaseous probe is much larger (roughly more than 10 times) and strongly influenced by the nature of metal. Only one adsorption mode (redox process producing adsorbed sulfate species) was observed at the LiCoO2 surface, while NMC materials exhibit sulfate and sulfite species at the surface. On the basis of XPS analysis of bare materials and previous theoretical work, we propose that the acid-base adsorption mode involving the Ni(2+) cation is responsible for the sulfite species on the NMC surface. After Al2O3 coating, the surface reactivity was clearly decreasing for both LiCoO2 and NMC materials. In addition, for LiCoO2, the coating modifies the surface reactivity with the identification of both sulfate and sulfite species. This result is in line with a change in the adsorption mode from redox toward acid-base after Al/Co substitution. In the case of NMC materials, the coating induced a decrease of the sulfite species content at the surface. This phenomenon can be related to the cation mixing effect in the NMC.
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Affiliation(s)
- N Andreu
- †IPREM, Université de Pau, Hélioparc Pau Pyrénées, 2 av. Pierre Angot, 64053 cedex 9 Pau, France
| | - D Flahaut
- †IPREM, Université de Pau, Hélioparc Pau Pyrénées, 2 av. Pierre Angot, 64053 cedex 9 Pau, France
| | - R Dedryvère
- †IPREM, Université de Pau, Hélioparc Pau Pyrénées, 2 av. Pierre Angot, 64053 cedex 9 Pau, France
| | - M Minvielle
- ‡INL, Site Ecole Centrale de Lyon, Batiment F7, 36, Avenue Guy de Collongue, 69134 Ecully, France
| | - H Martinez
- †IPREM, Université de Pau, Hélioparc Pau Pyrénées, 2 av. Pierre Angot, 64053 cedex 9 Pau, France
| | - D Gonbeau
- †IPREM, Université de Pau, Hélioparc Pau Pyrénées, 2 av. Pierre Angot, 64053 cedex 9 Pau, France
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