51
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Sun H, Jiao R, Wang D. The difference of aggregation mechanism between microplastics and nanoplastics: Role of Brownian motion and structural layer force. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 268:115942. [PMID: 33158612 DOI: 10.1016/j.envpol.2020.115942] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Revised: 10/22/2020] [Accepted: 10/26/2020] [Indexed: 06/11/2023]
Abstract
In recent years, microplastics (MPs) and nanoplastics (NPs) have attracted worldwide attention because of the potential risks they pose to aquatic environments, but there are few studies on the difference of aggregation mechanism between MPs and NPs. In this study, 100 nm and 1 μm polystyrene plastics were selected as models to explore the aggregation mechanism of MPs/NPs under different aquatic environments. The influence of ion species and concentrations on the aggregation behaviors and kinetics were systematically investigated to predict the effects of water quality on the occurrence form of MPs and NPs based on DLVO theory and revised modified Smoluchowski theory. Results showed concentration, valence and hydrated ability of cations jointly affected the aggregation behavior of NPs. The critical coagulation concentration ratio of cations were consistent with Schulze-Hardy rules. But the different aggregation rate coefficients of same valent cations were ascribed to the structural layer force. Anion species played a role in the reaction-controlled regime by producing hydrogen ions to neutralize negative charges on NPs surfaces. Due to the strong Brownian motion and structural layer force, NPs would be stable in freshwater but preferentially aggregated when transport through brackish water, estuaries, eutrophication and high hardness areas and sea water, forming the accumulation hot spots of NPs in the sediment. While for MPs, physical process controlled the aggregation mechanism of them, leading to high stability in natural water and eventually transporting into marine environments. This study provided a theoretical foundation for assessing the transport, distribution, fate and ecological risks of MPs and NPs in realistic aquatic environments.
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Affiliation(s)
- Hongyan Sun
- State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Ruyuan Jiao
- State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China.
| | - Dongsheng Wang
- State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; University of Chinese Academy of Sciences, Beijing, 100049, China.
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52
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Deng W, Jia X, Chen Y, Wang Z, Chen F, Chen W, Ao T. The mechanism and regulation of the electrosorption selectivity of inorganic anions during capacitive deionization. NEW J CHEM 2021. [DOI: 10.1039/d1nj02232f] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Explore and verify the influence of hydration energy and valence on selectivity of anions, and the role of anion's shape
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Affiliation(s)
- WenYang Deng
- Institute for Disaster Management and Reconstruction, Sichuan University-The Hong Kong Polytechnic University, Chengdu, Sichuan, 610225, China
| | - XueRu Jia
- College of Architecture and Environment, Sichuan University, Chengdu, Sichuan, 610065, China
| | - Yi Chen
- College of Architecture and Environment, Sichuan University, Chengdu, Sichuan, 610065, China
| | - Zhen Wang
- Institute for Disaster Management and Reconstruction, Sichuan University-The Hong Kong Polytechnic University, Chengdu, Sichuan, 610225, China
| | - FangFang Chen
- College of Architecture and Environment, Sichuan University, Chengdu, Sichuan, 610065, China
- College of Resources and Environment, Chengdu University of Information Technology, Chengdu, Sichuan, 610103, China
| | - WenQing Chen
- College of Architecture and Environment, Sichuan University, Chengdu, Sichuan, 610065, China
- State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu, Sichuan, 610065, China
| | - TianQi Ao
- State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu, Sichuan, 610065, China
- College of Water Resource and Hydropower, Sichuan University, Chengdu, Sichuan, 610065, China
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53
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High-value conversion of Na2SO4 wastewater by a continuous electrodialytic metathesis process: Effects of coexisting ions. J Memb Sci 2020. [DOI: 10.1016/j.memsci.2020.118584] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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54
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Naito T, Shinagawa T, Nishimoto T, Takanabe K. Water Electrolysis in Saturated Phosphate Buffer at Neutral pH. CHEMSUSCHEM 2020; 13:5921-5933. [PMID: 32875653 PMCID: PMC7756658 DOI: 10.1002/cssc.202001886] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Revised: 08/31/2020] [Indexed: 05/22/2023]
Abstract
Hydrogen production from renewable energy and ubiquitous water has a potential to achieve sustainability, although current water electrolyzers cannot compete economically with the fossil fuel-based technology. Here, we evaluate water electrolysis at pH 7 that is milder than acidic and alkaline pH counterparts and may overcome this issue. The physicochemical properties of concentrated buffer electrolytes were assessed at various temperatures and molalities for quantitative determination of losses associated with mass-transport during the water electrolysis. Subsequently, in saturated K-phosphate solutions at 80 °C and 100 °C that were found to be optimal to minimize the losses originating from mass-transport at the neutral pH, the water electrolysis performance over model electrodes of IrOx and Pt as an anode and a cathode, respectively, was reasonably comparable with those of the extreme pH. Remarkably, this concentrated buffer solution also achieved enhanced stability, adding another merit of this electrolyte for water electrolysis.
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Affiliation(s)
- Takahiro Naito
- Department of ChemicalSystem Engineering, School of EngineeringThe University of Tokyo7-3-1 Hongo, Bunkyo-kuTokyoJapan
| | - Tatsuya Shinagawa
- Department of ChemicalSystem Engineering, School of EngineeringThe University of Tokyo7-3-1 Hongo, Bunkyo-kuTokyoJapan
| | - Takeshi Nishimoto
- Department of ChemicalSystem Engineering, School of EngineeringThe University of Tokyo7-3-1 Hongo, Bunkyo-kuTokyoJapan
| | - Kazuhiro Takanabe
- Department of ChemicalSystem Engineering, School of EngineeringThe University of Tokyo7-3-1 Hongo, Bunkyo-kuTokyoJapan
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55
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Zhang C, Ding W, Zeng X, Xu X. Recovery of ammonia nitrogen from landfill leachate using a biopolar membrane equipped electrodialysis system. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2020; 82:1758-1770. [PMID: 33201841 DOI: 10.2166/wst.2020.438] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
In this paper, a laboratory-scale electrodialysis reactor with five compartment cells separated by a bipolar membrane and ion exchange membrane was assembled to remove ammonia nitrogen from landfill leachate as a pretreatment process. The effects of humic acid, magnesium ions (Mg2+) and calcium ions (Ca2+) existing in leachate on the removal efficiency of ammonium (NH4 +) were investigated by using simulated wastewater. The results indicate that humic acid has little impact on ammonium in the presence of an electric field. High concentrations of Mg2+ and Ca2+ in solution have a substantial impact on the removal efficiency of ammonium, but the average migration rate of the three ions is NH4 + > Mg2+ > Ca2+ under the same current intensity, and NH4 + plays a major role in electromigration for mixture electrodialysis. Therefore, ammonia nitrogen can be separated from leachate and accumulated effectively. Meanwhile, the bipolar membrane near the cathode produces alkali that is released into the base cell to promote ammonia nitrogen transformation from accumulated ammonium, which creates in-site alkaline condition for ammonia nitrogen recovery by a further stripping process. When the actual leachate collected from a local municipal sanitary landfill was employed, the reactor reached 86.17% of ammonia nitrogen removal after 3.0 h reaction. Analysis of membrane scale suggests the inhibitory effect of Mg2+ on Ca2+ migration during the initial working period of the reaction can potentially slow down the membrane scaling of the cation exchange membrane. This study provides a promising technology for the removal and recovery of ammonia nitrogen from landfill leachate.
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Affiliation(s)
- Cunkuan Zhang
- Key laboratory of the Three Gorges Reservoir Region's Eco-Environment, State Ministry of Education, Chongqing University, Chongqing, 400045, China and National Centre for International Research of Low-carbon and Green Buildings, ChongqingUniversity, Chongqing, 400045, China E-mail:
| | - Wenchuan Ding
- Key laboratory of the Three Gorges Reservoir Region's Eco-Environment, State Ministry of Education, Chongqing University, Chongqing, 400045, China and National Centre for International Research of Low-carbon and Green Buildings, ChongqingUniversity, Chongqing, 400045, China E-mail:
| | - Xiaolan Zeng
- Key laboratory of the Three Gorges Reservoir Region's Eco-Environment, State Ministry of Education, Chongqing University, Chongqing, 400045, China and National Centre for International Research of Low-carbon and Green Buildings, ChongqingUniversity, Chongqing, 400045, China E-mail:
| | - Xiaotang Xu
- Key laboratory of the Three Gorges Reservoir Region's Eco-Environment, State Ministry of Education, Chongqing University, Chongqing, 400045, China and National Centre for International Research of Low-carbon and Green Buildings, ChongqingUniversity, Chongqing, 400045, China E-mail:
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56
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Transcapillary transport of water, small solutes and proteins during hemodialysis. Sci Rep 2020; 10:18736. [PMID: 33127932 PMCID: PMC7603324 DOI: 10.1038/s41598-020-75687-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Accepted: 10/15/2020] [Indexed: 11/08/2022] Open
Abstract
The semipermeable capillary walls not only enable the removal of excess body water and solutes during hemodialysis (HD) but also provide an essential mechanism for maintaining cardiovascular homeostasis. Here, we investigated transcapillary transport processes on the whole-body level using the three-pore model of the capillary endothelium with large, small and ultrasmall pores. The transcapillary transport and cardiovascular response to a 4-h hemodialysis (HD) with 2 L ultrafiltration were analyzed by simulations in a virtual patient using the three-pore model of the capillary wall integrated in the whole-body compartmental model of the cardiovascular system with baroreflex mechanisms. The three-pore model revealed substantial changes during HD in the magnitude and direction of transcapillary water flows through small and ultrasmall pores and associated changes in the transcapillary convective transport of proteins and small solutes. The fraction of total capillary hydraulic conductivity attributed to ultrasmall pores was found to play an important role in the transcapillary water transport during HD thus influencing the cardiovascular response to HD. The presented model provides a novel computational framework for a detailed analysis of microvascular exchange during HD and as such may contribute to a better understanding of dialysis-induced changes in blood volume and blood pressure.
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57
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Kim S, Wang X, Jang J, Eom K, Clegg SL, Park G, Di Tommaso D. Hydrogen-Bond Structure and Low-Frequency Dynamics of Electrolyte Solutions: Hydration Numbers from ab Initio Water Reorientation Dynamics and Dielectric Relaxation Spectroscopy. Chemphyschem 2020; 21:2334-2346. [PMID: 32866322 PMCID: PMC7702081 DOI: 10.1002/cphc.202000498] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Revised: 08/31/2020] [Indexed: 11/16/2022]
Abstract
We present an atomistic simulation scheme for the determination of the hydration number (h) of aqueous electrolyte solutions based on the calculation of the water dipole reorientation dynamics. In this methodology, the time evolution of an aqueous electrolyte solution generated from ab initio molecular dynamics simulations is used to compute the reorientation time of different water subpopulations. The value of h is determined by considering whether the reorientation time of the water subpopulations is retarded with respect to bulk-like behavior. The application of this computational protocol to magnesium chloride (MgCl2 ) solutions at different concentrations (0.6-2.8 mol kg-1 ) gives h values in excellent agreement with experimental hydration numbers obtained using GHz-to-THz dielectric relaxation spectroscopy. This methodology is attractive because it is based on a well-defined criterion for the definition of hydration number and provides a link with the molecular-level processes responsible for affecting bulk solution behavior. Analysis of the ab initio molecular dynamics trajectories using radial distribution functions, hydrogen bonding statistics, vibrational density of states, water-water hydrogen bonding lifetimes, and water dipole reorientation reveals that MgCl2 has a considerable influence on the hydrogen bond network compared with bulk water. These effects have been assigned to the specific strong Mg-water interaction rather than the Cl-water interaction.
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Affiliation(s)
- Seonmyeong Kim
- Center for THz-driven Biomedical SystemDepartment of Physics and AstronomySeoul National UniversityGwanak-gu08826South Korea
- Advanced Institutes of Convergence TechnologySeoul National UniversitySuwon-SiGyeonggi-do16229South Korea
| | - Xiangwen Wang
- School of Biological and Chemical SciencesMaterials Research InstituteThomas Young CentreQueen Mary University of LondonMile End RoadLondonE1 4NSUnited Kingdom
| | - Jeongmin Jang
- Center for THz-driven Biomedical SystemDepartment of Physics and AstronomySeoul National UniversityGwanak-gu08826South Korea
- Advanced Institutes of Convergence TechnologySeoul National UniversitySuwon-SiGyeonggi-do16229South Korea
| | - Kihoon Eom
- Center for THz-driven Biomedical SystemDepartment of Physics and AstronomySeoul National UniversityGwanak-gu08826South Korea
- Advanced Institutes of Convergence TechnologySeoul National UniversitySuwon-SiGyeonggi-do16229South Korea
| | - Simon L. Clegg
- School of Environmental SciencesUniversity of East AngliaNorwichNR4 7TJUnited Kingdom
| | - Gun‐Sik Park
- Center for THz-driven Biomedical SystemDepartment of Physics and AstronomySeoul National UniversityGwanak-gu08826South Korea
- Advanced Institutes of Convergence TechnologySeoul National UniversitySuwon-SiGyeonggi-do16229South Korea
| | - Devis Di Tommaso
- School of Biological and Chemical SciencesMaterials Research InstituteThomas Young CentreQueen Mary University of LondonMile End RoadLondonE1 4NSUnited Kingdom
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58
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Zhao C, Zhang T, Hu G, Ma J, Song R, Li J. Efficient removal of perfluorooctane sulphonate by nanofiltration: Insights into the effect and mechanism of coexisting inorganic ions and humic acid. J Memb Sci 2020. [DOI: 10.1016/j.memsci.2020.118176] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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59
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Tian ZX, Zhang X, Liu CL, Meng QG, Du ZF, Yan J. Characterization of the Influence of Hydrated Ions on the Oxygen–Hydrogen Stretching Vibration of Water by Raman Spectroscopy. ANAL LETT 2020. [DOI: 10.1080/00032719.2020.1728294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Zhi-xian Tian
- Qingdao Institute of Marine Geology, China Geological Survey, Ministry of Nutural Resources, Qingdao, China
- Key Laboratory of Marine Geology and Environment & Center of Deepsea Research, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China
| | - Xin Zhang
- Key Laboratory of Marine Geology and Environment & Center of Deepsea Research, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China
- Laboratory for Marine Geology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Chang-ling Liu
- Qingdao Institute of Marine Geology, China Geological Survey, Ministry of Nutural Resources, Qingdao, China
- Laboratory for Marine Geology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Qing-guo Meng
- Qingdao Institute of Marine Geology, China Geological Survey, Ministry of Nutural Resources, Qingdao, China
| | - Zeng-feng Du
- Key Laboratory of Marine Geology and Environment & Center of Deepsea Research, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China
| | - Jun Yan
- Key Laboratory of Marine Geology and Environment & Center of Deepsea Research, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China
- Laboratory for Marine Geology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
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60
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61
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Yang CH, Chang JS, Lee DJ. Covalent organic framework EB-COF:Br as adsorbent for phosphorus (V) or arsenic (V) removal from nearly neutral waters. CHEMOSPHERE 2020; 253:126736. [PMID: 32302910 DOI: 10.1016/j.chemosphere.2020.126736] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Revised: 03/26/2020] [Accepted: 04/04/2020] [Indexed: 05/27/2023]
Abstract
The covalent organic framework (COF) is made light elements linked by covalent networks. This study synthesize and characterized, and for the first time applied the produced EB-COF:Br as adsorbent for phosphate and arsenate removal from nearly neutral waters. The synthesized COF was first proven structurally stable in solutions of 75% H3PO4, 6 M HCl, or 6 M NaOH. Then the phosphate adsorption onto the EB-COF:Br was shown to be an endothermic process with maximum adsorption capacity at 25, 35 and 45 °C as 25.3, 34.7 and 35.3 mg/g COF, respectively; and the corresponding arsenate adsorption process being an exothermic process with maximnum adsorption capacity as 53.1, 27.5 and 5.1 mg/g, respectively. The synthesized COF could also effectively adsorb phosphate and arsenate ions from river water (pH 7.45) but at reduced adsorption capacities. The electrostatic interactions between the negative charge on phosphate or arsenate ions and the positively charged (N+-) of COF, and the hydrogen bondings between H atom on phosphate or arsenate ions and the (-CO) group of COF were the dominating mechanisms for the present adsorption process. The strong electrostatic interactions for arsenate contributed to its higer adsorption capacity than noted for phosphate at 25 °C. However, the disturbed hydrogen bonding induced by mismatched sizes of arsenate ion and the adsorption sites surrounded by the (N+-) and the (-CO) groups reduced the stability of arsenate to against temperature and external anion challenges. The use of the EB-COF; Br as industrial adsorbent was also discussed.
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Affiliation(s)
- Cheng-Hao Yang
- Department of Chemical Engineering, National Taiwan University, Taipei, 10617, Taiwan
| | - Jo-Shu Chang
- Department of Chemical Engineering, College of Engineering, Tunghai University, Taichung, 40704, Taiwan
| | - Duu-Jong Lee
- Department of Chemical Engineering, National Taiwan University, Taipei, 10617, Taiwan; Department of Chemical Engineering, College of Engineering, Tunghai University, Taichung, 40704, Taiwan; National Taiwan University of Science and Technology, Taipei, 10607, Taiwan.
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62
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Mahdavi H, Mazinani N, Heidari AA. Poly(vinylidene fluoride) (PVDF)
/
PVDF‐
g
‐polyvinylpyrrolidone (PVP)
/
TiO
2
mixed matrix nanofiltration membranes: preparation and characterization. POLYM INT 2020. [DOI: 10.1002/pi.6061] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Hossein Mahdavi
- School of Chemistry, College of Science University of Tehran Tehran Iran
| | - Nouriyeh Mazinani
- School of Chemistry, College of Science University of Tehran Tehran Iran
| | - Ali Akbar Heidari
- School of Chemistry, College of Science University of Tehran Tehran Iran
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63
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Lin JY, Kim M, Li D, Kim H, Huang CP. The removal of phosphate by thermally treated red mud from water: The effect of surface chemistry on phosphate immobilization. CHEMOSPHERE 2020; 247:125867. [PMID: 31972486 DOI: 10.1016/j.chemosphere.2020.125867] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2019] [Revised: 01/03/2020] [Accepted: 01/06/2020] [Indexed: 06/10/2023]
Abstract
This study investigated thermal treatment of red mud (RM) and its effect on phase composition, surface property, and sorption capacity exemplified by phosphate. Dehydration (∼600 °C), decomposition of carbonate minerals (700 °C-800 °C), and silicate/aluminate formation (900 °C-1000 °C) occurred upon thermal treatment of RM. Grain growth and vitrification that rendered initial morphology changes and decreased the specific surface area of RM from 26.5 to 4.1 m2/g when treated from 600 to 1000 °C, respectively. Surface acidity, i.e., intrinsic acidity constant and surface acidity density, decreased as well after thermal treatment at 600 °C due to burnouts of organics then increased upon further elevated-temperature treatment because of phase transformation. Thermal activation enhanced phosphate adsorption density (μmol/m2). Multilayer sorption aided by leached metal ions was responsible for phosphate immobilization.
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Affiliation(s)
- Jui-Yen Lin
- Department of Civil and Environmental Engineering, University of Delaware, Newark, DE, 19716, United States; Department of Chemical Engineering, National Cheng Kung University, Tainan, 701, Taiwan
| | - Minsoo Kim
- Department of Environmental Engineering, University of Seoul, Seoul, 130-743, South Korea
| | - Dan Li
- Department of Environmental Engineering, University of Seoul, Seoul, 130-743, South Korea
| | - Hyunook Kim
- Department of Environmental Engineering, University of Seoul, Seoul, 130-743, South Korea
| | - Chin-Pao Huang
- Department of Civil and Environmental Engineering, University of Delaware, Newark, DE, 19716, United States.
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64
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Characteristic and model of phosphate adsorption by activated carbon electrodes in capacitive deionization. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2019.116285] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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65
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Facile method to granulate drinking water treatment residues as a potential media for phosphate removal. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2019.124198] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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66
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Induction time and zeta potential study of nucleating and growing struvite crystals for phosphorus recovery improvements within fluidized bed reactors. POWDER TECHNOL 2020. [DOI: 10.1016/j.powtec.2019.09.067] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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67
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Abstract
AbstractThe strong, long-range electrostatic forces described by Coulomb's law disappear for ions in water, and the behavior of these ions is instead controlled by their water affinity – a weak, short-range force which arises from their charge density. This was established experimentally in the mid-1980s by size-exclusion chromatography on carefully calibrated Sephadex®G-10 (which measures the effective volume and thus the water affinity of an ion) and by neutron diffraction with isotopic substitution (which measures the density and orientation of water molecules near the diffracting ion and thus its water affinity). These conclusions have been confirmed more recently by molecular dynamics simulations, which explicitly model each individual water molecule. This surprising change in force regime occurs because the oppositely charged ions in aqueous salt solutions exist functionally as ion pairs (separated by 0, 1 or 2 water molecules) as has now been shown by dielectric relaxation spectroscopy; this cancels out the strong long-range electrostatic forces and allows the weak, short-range water affinity effects to come to the fore. This microscopic structure of aqueous salt solutions is not captured by models utilizing a macroscopic dielectric constant. Additionally, the Law of Matching Water Affinity, first described in 1997 and 2004, establishes that contact ion pair formation is controlled by water affinity and is a major determinant of the solubility of charged species since only a net neutral species can change phases.
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68
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Teychené J, Balmann HRD, Maron L, Galier S. Investigation of ions hydration using molecular modeling. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.111394] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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69
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Influence of pH, multivalent counter ions, and membrane fouling on phosphate retention during ceramic nanofiltration. Sep Purif Technol 2019. [DOI: 10.1016/j.seppur.2019.115675] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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70
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Pramanik BK, Hai FI, Ansari AJ, Roddick FA. Mining phosphorus from anaerobically treated dairy manure by forward osmosis membrane. J IND ENG CHEM 2019. [DOI: 10.1016/j.jiec.2019.05.025] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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71
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Chen R, Hung SF, Zhou D, Gao J, Yang C, Tao H, Yang HB, Zhang L, Zhang L, Xiong Q, Chen HM, Liu B. Layered Structure Causes Bulk NiFe Layered Double Hydroxide Unstable in Alkaline Oxygen Evolution Reaction. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2019; 31:e1903909. [PMID: 31461181 DOI: 10.1002/adma.201903909] [Citation(s) in RCA: 168] [Impact Index Per Article: 33.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2019] [Revised: 08/01/2019] [Indexed: 05/25/2023]
Abstract
NiFe-based layered double hydroxides (LDHs) are among the most efficient oxygen evolution reaction (OER) catalysts in alkaline medium, but their long-term OER stabilities are questionable. In this work, it is demonstrated that the layered structure makes bulk NiFe LDH intrinsically not stable in OER and the deactivation mechanism of NiFe LDH in OER is further revealed. Both operando electrochemical and structural characterizations show that the interlayer basal plane in bulk NiFe LDH contributes to the OER activity, and the slow diffusion of proton acceptors (e.g., OH- ) within the NiFe LDH interlayers during OER causes dissolution of NiFe LDH and therefore decrease in OER activity with time. To improve diffusion of proton acceptors, it is proposed to delaminate NiFe LDH into atomically thin nanosheets, which is able to effectively improve OER stability of NiFe LDH especially at industrial operating conditions such as elevated operating temperatures (e.g., at 80 °C) and large current densities (e.g., at 500 mA cm-2 ).
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Affiliation(s)
- Rong Chen
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore, 637459, Singapore
| | - Sung-Fu Hung
- Department of Chemistry, National Taiwan University, Taipei, 106, Taiwan
| | - Daojin Zhou
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore, 637459, Singapore
| | - Jiajian Gao
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore, 637459, Singapore
| | - Cangjie Yang
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore, 637459, Singapore
| | - Huabing Tao
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore, 637459, Singapore
| | - Hong Bin Yang
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore, 637459, Singapore
| | - Liping Zhang
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore, 637459, Singapore
| | - Lulu Zhang
- Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore, 637371, Singapore
| | - Qihua Xiong
- Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore, 637371, Singapore
| | - Hao Ming Chen
- Department of Chemistry, National Taiwan University, Taipei, 106, Taiwan
| | - Bin Liu
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore, 637459, Singapore
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72
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Cui L, Lagorse M, Bourrel M. Unique Solubility of Switchable Alkyl‐Amine Surfactants in Water. J SURFACTANTS DETERG 2019. [DOI: 10.1002/jsde.12352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Leyu Cui
- TOTAL S.A., Exploration and Production (EP), Pôle Economique 2 – BP 47 Lacq 64170 France
| | - Marine Lagorse
- TOTAL S.A., Exploration and Production (EP), Pôle Economique 2 – BP 47 Lacq 64170 France
| | - Maurice Bourrel
- TOTAL S.A., Exploration and Production (EP), Pôle Economique 2 – BP 47 Lacq 64170 France
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73
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Affiliation(s)
- Harrison Laurent
- Department of Physics and Astronomy, University of Leeds, Leeds, UK
- Astbury Centre for Structural and Molecular Biology, University of Leeds, Leeds, UK
| | - Alan Soper
- ISIS Facility, STFC Rutherford Appleton Laboratory, Didcot, UK
| | - Lorna Dougan
- Department of Physics and Astronomy, University of Leeds, Leeds, UK
- Astbury Centre for Structural and Molecular Biology, University of Leeds, Leeds, UK
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74
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Bao X, Wu Q, Shi W, Wang W, Zhu Z, Zhang Z, Zhang R, Zhang B, Guo Y, Cui F. Dendritic amine sheltered membrane for simultaneous ammonia selection and fouling mitigation in forward osmosis. J Memb Sci 2019. [DOI: 10.1016/j.memsci.2019.04.063] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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75
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Rigo E, Dong Z, Park JH, Kennedy E, Hokmabadi M, Almonte-Garcia L, Ding L, Aluru N, Timp G. Measurements of the size and correlations between ions using an electrolytic point contact. Nat Commun 2019; 10:2382. [PMID: 31147537 PMCID: PMC6542849 DOI: 10.1038/s41467-019-10265-2] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2018] [Accepted: 05/01/2019] [Indexed: 01/20/2023] Open
Abstract
The size of an ion affects everything from the structure of water to life itself. In this report, to gauge their size, ions dissolved in water are forced electrically through a sub-nanometer-diameter pore spanning a thin membrane and the current is measured. The measurements reveal an ion-selective conductance that vanishes in pores <0.24 nm in diameter-the size of a water molecule-indicating that permeating ions have a grossly distorted hydration shell. Analysis of the current noise power spectral density exposes a threshold, below which the noise is independent of current, and beyond which it increases quadratically. This dependence proves that the spectral density, which is uncorrelated below threshold, becomes correlated above it. The onset of correlations for Li+, Mg2+, Na+ and K+-ions extrapolates to pore diameters of 0.13 ± 0.11 nm, 0.16 ± 0.11 nm, 0.22 ± 0.11 nm and 0.25 ± 0.11 nm, respectively-consonant with diameters at which the conductance vanishes and consistent with ions moving through the sub-nanopore with distorted hydration shells in a correlated way.
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Affiliation(s)
- Eveline Rigo
- Electrical Engineering and Biological Science, University of Notre Dame, Notre Dame, IN, 46556, USA
| | - Zhuxin Dong
- Electrical Engineering and Biological Science, University of Notre Dame, Notre Dame, IN, 46556, USA
| | - Jae Hyun Park
- Department of Aerospace and Software Engineering and Research Center for Aircraft Parts Technology, Gyeongsang National University, Jinju, Gyeongnam, 52828, Republic of Korea
| | - Eamonn Kennedy
- Electrical Engineering and Biological Science, University of Notre Dame, Notre Dame, IN, 46556, USA
| | - Mohammad Hokmabadi
- Electrical Engineering and Biological Science, University of Notre Dame, Notre Dame, IN, 46556, USA
| | - Lisa Almonte-Garcia
- Electrical Engineering and Biological Science, University of Notre Dame, Notre Dame, IN, 46556, USA
| | - Li Ding
- Electrical Engineering and Biological Science, University of Notre Dame, Notre Dame, IN, 46556, USA
| | - Narayana Aluru
- Mechanical Engineering, University of Illinois, Urbana, IL, 61801, USA
| | - Gregory Timp
- Electrical Engineering and Biological Science, University of Notre Dame, Notre Dame, IN, 46556, USA.
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76
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Yi G, Fan X, Quan X, Zhang H, Chen S, Yu H. A pH-responsive PAA-grafted-CNT intercalated RGO membrane with steady separation efficiency for charged contaminants over a wide pH range. Sep Purif Technol 2019. [DOI: 10.1016/j.seppur.2019.01.028] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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77
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Bao X, Wu Q, Shi W, Wang W, Yu H, Zhu Z, Zhang X, Zhang Z, Zhang R, Cui F. Polyamidoamine dendrimer grafted forward osmosis membrane with superior ammonia selectivity and robust antifouling capacity for domestic wastewater concentration. WATER RESEARCH 2019; 153:1-10. [PMID: 30684821 DOI: 10.1016/j.watres.2018.12.067] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2018] [Revised: 12/22/2018] [Accepted: 12/25/2018] [Indexed: 06/09/2023]
Abstract
Developing a forward osmosis (FO) membrane with superior ammonia selectivity and robust antifouling performance is important for treating domestic wastewater (DW) but challenging due to the similar polarities and hydraulic radii of NH4+ and water molecules. Herein, we investigated the feasibility of using polyamidoamine (PAMAM) dendrimer to simultaneously enhance the ammonia rejection rate and antifouling capacity of the thin-film composite (TFC) FO membrane. PAMAM dendrimer with abundant, easily-protonated, terminal amine groups was grafted on TFC-FO membrane surface via covalent bonds, which inspired the TFC-FO membrane surface with appreciable Zeta potential (isoelectric point: pH = 5.5) and outstanding hydrophilicity (water contact angle: 39.83 ± 0.57°). Benefiting from the electrostatic repulsion between the protonated amine layer and NH4+-N as well as the concentration-induced diffusion resistance, the introduction of PAMAM dendrimer endowed the grafted membrane with a superior NH4+-N rejection rate of 98.23% and a significantly reduced the reverse solute flux when using NH4Cl solutions as feed solution. Meanwhile, the perfect balance between the electrostatic repulsion to positively-charged micromoleculer ions (metal ions and NH4+-N) and the electrostatic attraction to negatively-charged macromolecular organic foulants together with the hydrophilic nature of amine groups facilitated the enhancement of the grafted membranes in antifouling capacity and hence the NH4+-N selectivity (rejection rate of 91.81%) during the concentration of raw DW. The overall approach of this work opens up a frontier for preparation of ammonia-selective and antifouling TFC-FO membrane.
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Affiliation(s)
- Xian Bao
- State Key Laboratory of Urban Water Resource and Environment, School of Environmental Engineering, Harbin Institute of Technology, Harbin, 150090, PR China
| | - Qinglian Wu
- State Key Laboratory of Urban Water Resource and Environment, School of Environmental Engineering, Harbin Institute of Technology, Harbin, 150090, PR China
| | - Wenxin Shi
- State Key Laboratory of Urban Water Resource and Environment, School of Environmental Engineering, Harbin Institute of Technology, Harbin, 150090, PR China; College of Urban Construction and Environmental Engineering, Chongqing University, Chongqing, 400044, PR China.
| | - Wei Wang
- State Key Laboratory of Urban Water Resource and Environment, School of Environmental Engineering, Harbin Institute of Technology, Harbin, 150090, PR China
| | - Huarong Yu
- State Key Laboratory of Urban Water Resource and Environment, School of Environmental Engineering, Harbin Institute of Technology, Harbin, 150090, PR China
| | - Zhigao Zhu
- State Key Laboratory of Urban Water Resource and Environment, School of Environmental Engineering, Harbin Institute of Technology, Harbin, 150090, PR China
| | - Xinyu Zhang
- State Key Laboratory of Urban Water Resource and Environment, School of Environmental Engineering, Harbin Institute of Technology, Harbin, 150090, PR China
| | - Zhiqiang Zhang
- State Key Laboratory of Urban Water Resource and Environment, School of Environmental Engineering, Harbin Institute of Technology, Harbin, 150090, PR China
| | - Ruijun Zhang
- State Key Laboratory of Urban Water Resource and Environment, School of Environmental Engineering, Harbin Institute of Technology, Harbin, 150090, PR China
| | - Fuyi Cui
- State Key Laboratory of Urban Water Resource and Environment, School of Environmental Engineering, Harbin Institute of Technology, Harbin, 150090, PR China; College of Urban Construction and Environmental Engineering, Chongqing University, Chongqing, 400044, PR China.
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78
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Liu X, Tian R, Ding W, He Y, Li H. Adsorption selectivity of heavy metals by Na-clinoptilolite in aqueous solutions. ADSORPTION 2019. [DOI: 10.1007/s10450-019-00081-x] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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79
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Insights into simultaneous ammonia-selective and anti-fouling mechanism over forward osmosis membrane for resource recovery from domestic wastewater. J Memb Sci 2019. [DOI: 10.1016/j.memsci.2018.11.072] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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80
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Cao Z, Chen Y, Li D, Cheng J, Liu C. Fabrication of Phosphate-Imprinted PNIPAM/SiO₂ Hybrid Particles and Their Phosphate Binding Property. Polymers (Basel) 2019; 11:E253. [PMID: 30960237 PMCID: PMC6419039 DOI: 10.3390/polym11020253] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2018] [Revised: 01/29/2019] [Accepted: 01/30/2019] [Indexed: 12/12/2022] Open
Abstract
A SiO₂ microsphere imprinted by phosphate ions was prepared with the use of phosphate ion as the template molecule and tetraethoxysilane as the precursor. Thereafter, the imprinted SiO₂ microspheres were modified with 3-(trimethoxysilyl)propyl methacrylate (TMSPMA@SiO₂), followed by introducing the double bond. In the presence of TMSPMA@SiO₂, using N-isopropylacrylamide as monomer, and potassium persulfate as initiator, polymer/inorganic hybrid particles (PNIPAM/SiO₂) were prepared. Fourier transform infrared spectroscopy, thermogravimetric analysis, nitrogen adsorption-desorption test, and transmission electron microscope were employed for the characterization of molecular imprinted SiO₂ microspheres and PNIPAM/SiO₂ hybrid particles. The effects of phosphate concentration, pH value, and adsorption temperature on the phosphate binding properties of PNIPAM/SiO₂ hybrid particles were studied by UV-vis spectrophotometer. The experimental results shed light on the fact that the PNIPAM structure is beneficial for the improvement of the adsorption ability of phosphate-imprinted SiO₂ microspheres. With the increase in the initial phosphate concentration, the adsorption capacity of hybrid particles to phosphate ions increased to 274 mg/g at pH = 7 and 15 °C. The acid condition and the temperature below the low critical solution temperature (LCST) of PNIPAM are favorable to the adsorption of phosphate ions by PNIPAM/SiO₂ hybrid particles, and the maximum adsorption capacity can reach 287 mg/g (at pH = 5 and 15 °C). The phosphate imprinted polymer/inorganic hybrid material is expected to be put to use in the fields of phosphate ions adsorption, separation, and recovery.
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Affiliation(s)
- Zheng Cao
- Jiangsu Key Laboratory of Environmentally Friendly Polymeric Materials, School of Materials Science and Engineering, Jiangsu Collaborative Innovation Center of Photovoltaic Science and Engineering, Changzhou University, Changzhou 213164, China.
- Key Laboratory of Synthetic and Self-Assembly Chemistry for Organic Functional Molecules, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China.
| | - Yuyuan Chen
- Jiangsu Key Laboratory of Environmentally Friendly Polymeric Materials, School of Materials Science and Engineering, Jiangsu Collaborative Innovation Center of Photovoltaic Science and Engineering, Changzhou University, Changzhou 213164, China.
| | - Dan Li
- Jiangsu Key Laboratory of Environmentally Friendly Polymeric Materials, School of Materials Science and Engineering, Jiangsu Collaborative Innovation Center of Photovoltaic Science and Engineering, Changzhou University, Changzhou 213164, China.
| | - Junfeng Cheng
- Jiangsu Key Laboratory of Environmentally Friendly Polymeric Materials, School of Materials Science and Engineering, Jiangsu Collaborative Innovation Center of Photovoltaic Science and Engineering, Changzhou University, Changzhou 213164, China.
- National Experimental Demonstration Center for Materials Science and Engineering (Changzhou University), Changzhou 213164, China.
| | - Chunlin Liu
- Jiangsu Key Laboratory of Environmentally Friendly Polymeric Materials, School of Materials Science and Engineering, Jiangsu Collaborative Innovation Center of Photovoltaic Science and Engineering, Changzhou University, Changzhou 213164, China.
- Huaide College, Changzhou University, Changzhou 213016, China.
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81
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Schneider C, Rajmohan RS, Zarebska A, Tsapekos P, Hélix-Nielsen C. Treating anaerobic effluents using forward osmosis for combined water purification and biogas production. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 647:1021-1030. [PMID: 30180310 DOI: 10.1016/j.scitotenv.2018.08.036] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2018] [Revised: 07/23/2018] [Accepted: 08/03/2018] [Indexed: 06/08/2023]
Abstract
Forward osmosis (FO) can be used to reclaim nutrients and high-quality water from wastewater streams. This could potentially contribute towards relieving global water scarcity. Here we investigated the feasibility of extracting water from four real and four synthetic anaerobically digested effluents, using FO membranes. The goal of this study was to 1) evaluate FO membrane performance in terms of water flux and nutrient rejection 2) examine the methane yield that can be achieved and 3) analyse FO membrane fouling. Out of the four tested real anaerobically digested effluents, swine manure and potato starch wastewater achieved the highest combined average FO water flux (>3 liter per square meter per hour (LMH) with 0.66 M MgCl2 as initial draw solution concentration) and methane yield (>300 mL CH4 per gram of organic waste expressed as volatile solids (VS)). Rejection of total ammonia nitrogen (TAN), total Kjeldahl nitrogen (TKN) and total phosphorous (TP) was high (up to 96.95%, 95.87% and 99.83%, respectively), resulting in low nutrient concentrations in the recovered water. Membrane autopsy revealed presence of organic and biological fouling on the FO membrane. However, no direct correlation between feed properties and methane yield and fouling potential was found, indicating that there is no inherent trade-off between high water flux and high methane production.
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Affiliation(s)
- Carina Schneider
- Technical University of Denmark, Department of Environmental Engineering, Bygningstorvet, Building 115, 2800 Kgs. Lyngby, Denmark
| | - Rajath Sathyadev Rajmohan
- Technical University of Denmark, Department of Environmental Engineering, Bygningstorvet, Building 115, 2800 Kgs. Lyngby, Denmark
| | - Agata Zarebska
- Technical University of Denmark, Department of Environmental Engineering, Bygningstorvet, Building 115, 2800 Kgs. Lyngby, Denmark
| | - Panagiotis Tsapekos
- Technical University of Denmark, Department of Environmental Engineering, Bygningstorvet, Building 115, 2800 Kgs. Lyngby, Denmark
| | - Claus Hélix-Nielsen
- Technical University of Denmark, Department of Environmental Engineering, Bygningstorvet, Building 115, 2800 Kgs. Lyngby, Denmark; University of Maribor, Faculty of Chemistry and Chemical Engineering, Smetanova ulica 17, 2000 Maribor, Slovenia.
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82
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Remsing RC, Klein ML. Exponential Scaling of Water Exchange Rates with Ion Interaction Strength from the Perspective of Dynamic Facilitation Theory. J Phys Chem A 2019; 123:1077-1084. [PMID: 30609371 DOI: 10.1021/acs.jpca.8b09667] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Richard C. Remsing
- Institute for Computational Molecular Science and Department of Chemistry, Temple University, Philadelphia, Pennsylvania 19122, United States
| | - Michael L. Klein
- Institute for Computational Molecular Science and Department of Chemistry, Temple University, Philadelphia, Pennsylvania 19122, United States
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83
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Zavitsas AA. Quest To Demystify Water: Ideal Solution Behaviors Are Obtained by Adhering to the Equilibrium Mass Action Law. J Phys Chem B 2019; 123:869-883. [DOI: 10.1021/acs.jpcb.8b07166] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Andreas A. Zavitsas
- Department of Chemistry and Biochemistry, Long Island University, 1 University Plaza, Brooklyn, New York 11201, United States
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84
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Uzun HI, Debik E. Economical approach to nitrate removal via membrane capacitive deionization. Sep Purif Technol 2019. [DOI: 10.1016/j.seppur.2018.09.037] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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85
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Moran Ayala LI, Paquet M, Janowska K, Jamard P, Quist-Jensen CA, Bosio GN, Mártire DO, Fabbri D, Boffa V. Water Defluoridation: Nanofiltration vs Membrane Distillation. Ind Eng Chem Res 2018. [DOI: 10.1021/acs.iecr.8b03620] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Lucía I. Moran Ayala
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA), CONICET, Universidad Nacional de La Plata, Diagonal 113 y calle 64, 1900, La Plata, Argentina
| | - Marie Paquet
- Department of Chemistry and Bioscience, Aalborg University, Fredrik Bajers vej 7H, 9220 Aalborg, Denmark
| | - Katarzyna Janowska
- Department of Chemistry and Bioscience, Aalborg University, Fredrik Bajers vej 7H, 9220 Aalborg, Denmark
| | - Paul Jamard
- Department of Chemistry and Bioscience, Aalborg University, Fredrik Bajers vej 7H, 9220 Aalborg, Denmark
| | - Cejna A. Quist-Jensen
- Department of Chemistry and Bioscience, Aalborg University, Fredrik Bajers vej 7H, 9220 Aalborg, Denmark
| | - Gabriela N. Bosio
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA), CONICET, Universidad Nacional de La Plata, Diagonal 113 y calle 64, 1900, La Plata, Argentina
| | - Daniel O. Mártire
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA), CONICET, Universidad Nacional de La Plata, Diagonal 113 y calle 64, 1900, La Plata, Argentina
| | - Debora Fabbri
- Dipartimento di Chimica, Universitá di Torino,Via P. Giuria 5, 10125 Torino, Italy
| | - Vittorio Boffa
- Department of Chemistry and Bioscience, Aalborg University, Fredrik Bajers vej 7H, 9220 Aalborg, Denmark
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86
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Thamma U, Kowal T, Falk M, Jain H. Influence of nanoporosity on the nature of hydroxyapatite formed on bioactive calcium silicate model glass. J Biomed Mater Res B Appl Biomater 2018; 107:886-899. [PMID: 30267633 DOI: 10.1002/jbm.b.34184] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Revised: 05/24/2018] [Accepted: 05/28/2018] [Indexed: 11/10/2022]
Abstract
For hard tissue regeneration, the bioactivity of a material is measured by its ability to induce the formation of hydroxyapatite (HA) under physiological conditions. It depends on the dissolution behavior of the glass, which itself is determined by the composition and structure of glass. The enhanced HA growth on nanoporous than on nonporous glass has been attributed by some to greater specific surface area (SSA), but to nanopore size distribution by others. To decouple the influence of nanopore size and SSA on HA formation, we have successfully fabricated homogeneous 30CaO-70SiO2 (30C70S) model bioactive glass monoliths with different nanopore sizes, yet similar SSA via a combination of sol-gel, solvent exchange, and sintering processes. After incubation in PBS, HA, and Type-B carbonated HA (HA/B-CHA) form on nanoporous monoliths. The XPS, FTIR, and SEM analyses provide the first unambiguous demonstration of the influence of nanopore size alone on the formation pathway, growth rate, and microstructure of HA/CHA. Due to pore-size limited diffusion of PO4 3- , two HA/CHA formation pathways are observed: HA/CHA surface deposition and/or HA/CHA incorporation into nanopores. HA/CHA growth rate on the surface of a nanoporous glass monolith is dominated by the pore-size limited transport of Ca2+ ions dissolved from nanoporous glass substrates. Furthermore, with increasing nanopore size, HA/CHA microstructures evolve from needle-like, plate-like, to flower-like appearance. © 2018 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater 107B: 886-899, 2019.
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Affiliation(s)
- Ukrit Thamma
- Department of Materials Science and Engineering, Lehigh University, Bethlehem, 18015, Pennsylvania
| | - Tia Kowal
- Department of Biological Sciences, Lehigh University, Bethlehem, 18015, Pennsylvania
| | - Matthias Falk
- Department of Biological Sciences, Lehigh University, Bethlehem, 18015, Pennsylvania
| | - Himanshu Jain
- Department of Materials Science and Engineering, Lehigh University, Bethlehem, 18015, Pennsylvania
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87
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Abstract
Water at interfaces governs many processes on the molecular scale from electrochemical and enzymatic reactions to protein folding. Here we focus on water transport through proteinaceous pores that are so narrow that the water molecules cannot overtake each other in the pore. After a short introduction into the single-file transport theory, we analyze experiments in which the unitary water permeability, pf, of water channel proteins (aquaporins, AQPs), potassium channels (KcsA), and antibiotics (gramicidin-A derivatives) has been obtained. A short outline of the underlying methods (scanning electrochemical microscopy, fluorescence correlation spectroscopy, measurements of vesicle light scattering) is also provided. We conclude that pf increases exponentially with a decreasing number NH of hydrogen bond donating or accepting residues in the channel wall. The variance in NH is responsible for a more than hundredfold change in pf. The dehydration penalty at the channel mouth has a smaller effect on pf. The intricate link between pf and the Gibbs activation energy barrier, ΔG‡t, for water flow suggests that conformational transitions of water channels act as a third determinant of pf.
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Affiliation(s)
- Andreas Horner
- Johannes Kepler University Linz, Institute of Biophysics, Gruberstr. 40, 4020 Linz, Austria.
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88
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Zhao G, Deng X, Liu X, Shi C, Liu X, Tan X, Zhang S, Xu X. New Properties of Two-Dimensional Materials: Highly Effective Thermal Catalytic Degradation Activity. ChemistrySelect 2018. [DOI: 10.1002/slct.201802125] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Gang Zhao
- Laboratory of functional micro-nano material and device; School of Physics and Technology; University of Jinan; Jinan, Shandong, P. R. China
| | - Xiaolong Deng
- Laboratory of functional micro-nano material and device; School of Physics and Technology; University of Jinan; Jinan, Shandong, P. R. China
| | - Xiaojing Liu
- Laboratory of functional micro-nano material and device; School of Physics and Technology; University of Jinan; Jinan, Shandong, P. R. China
| | - Chaoqun Shi
- Laboratory of functional micro-nano material and device; School of Physics and Technology; University of Jinan; Jinan, Shandong, P. R. China
| | - Xinke Liu
- Laboratory of functional micro-nano material and device; School of Physics and Technology; University of Jinan; Jinan, Shandong, P. R. China
| | - Xinyi Tan
- Laboratory of functional micro-nano material and device; School of Physics and Technology; University of Jinan; Jinan, Shandong, P. R. China
| | - Shouwei Zhang
- Laboratory of functional micro-nano material and device; School of Physics and Technology; University of Jinan; Jinan, Shandong, P. R. China
| | - Xijin Xu
- Laboratory of functional micro-nano material and device; School of Physics and Technology; University of Jinan; Jinan, Shandong, P. R. China
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89
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Metal Ion Interactions with Crude Oil Components: Specificity of Ca2+ Binding to Naphthenic Acid at an Oil/Water Interface. COLLOIDS AND INTERFACES 2018. [DOI: 10.3390/colloids2030040] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
On the basis of dynamic interfacial tension measurements, Ca2+ has been shown specifically to interact with naphthenic acid (NA) at the n-heptane/water interface, consistent with NA adsorption followed by interfacial complexation and formation of a more ordered interfacial film. Optimum concentrations of Ca2+ and NA have been found to yield lower, time-dependent interfacial tensions, not evident for Mg2+ and Sr2+ or for several alkali metal ions studied. The results reflect the specific hydration and coordination chemistry of Ca2+ seen in biology. Owing to the ubiquitous presence of Ca2+ in oilfield waters, this finding has potential relevance to the surface chemistry underlying crude oil recovery. For example, “locking” acidic components at water/oil interfaces may be important for crude oil emulsion stability, or in bonding bulk oil to mineral surfaces through an aqueous phase, potentially relevant for carbonate reservoirs. The relevance of the present results to low salinity waterflooding as an enhanced crude oil recovery technique is also discussed.
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90
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Hale CS, Ornelas DN, Yang JS, Chang L, Vang K, Batarseh RN, Ozaki N, Rodgers VGJ. Interrogating the Osmotic Pressure of Self-Crowded Bovine Serum Albumin Solutions: Implications of Specific Monovalent Anion Effects Relative to the Hofmeister Series. J Phys Chem B 2018; 122:8037-8046. [PMID: 30074781 DOI: 10.1021/acs.jpcb.8b07000] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The free-solvent-based (FSB) model and osmotic pressure were used to probe the ion binding and protein hydration for self-crowded bovine serum albumin in 0.15 M NaF, NaCl, NaI, and NaSCN solutions. All experiments were conducted with solutions at pH 7.4. The regressed results of the FSB model behavior to the measured osmotic pressure were excellent, albeit, the osmotic pressure data for NaSCN were noisy. The resulting ion binding and hydration were realistic values and the covariance of the two parameters was exceptionally low, providing substantial credibility to the FSB model. The results showed that the kosmotropic F- and neutral Cl- solutions generated significantly higher ion binding and protein hydration than the chaotropic solutions of I- and SCN-. Further, the ionic strength ratio and resulting hydration implied that the chaotropic solutions had substantially higher aggregation than the other salts investigated. Overall, the FSB model provides an additional, complementary tool to contribute to the analysis of crowded protein solutions relative to anions in the Hofmeister series as it can interrogate crowded solutions directly; something that is not possible with many measurement techniques.
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Affiliation(s)
- Christopher S Hale
- Department of Bioengineering, B2K Group (Biotransport and Bioreaction Kinetics Group) , University of California , Riverside , California 92521 , United States
| | - Danielle N Ornelas
- Department of Bioengineering, B2K Group (Biotransport and Bioreaction Kinetics Group) , University of California , Riverside , California 92521 , United States
| | - Jennifer S Yang
- Department of Bioengineering, B2K Group (Biotransport and Bioreaction Kinetics Group) , University of California , Riverside , California 92521 , United States
| | - Larry Chang
- Department of Bioengineering, B2K Group (Biotransport and Bioreaction Kinetics Group) , University of California , Riverside , California 92521 , United States
| | - Kevin Vang
- Department of Bioengineering, B2K Group (Biotransport and Bioreaction Kinetics Group) , University of California , Riverside , California 92521 , United States
| | - Ramsey N Batarseh
- Department of Bioengineering, B2K Group (Biotransport and Bioreaction Kinetics Group) , University of California , Riverside , California 92521 , United States
| | - Noriko Ozaki
- Department of Bioengineering, B2K Group (Biotransport and Bioreaction Kinetics Group) , University of California , Riverside , California 92521 , United States
| | - Victor G J Rodgers
- Department of Bioengineering, B2K Group (Biotransport and Bioreaction Kinetics Group) , University of California , Riverside , California 92521 , United States
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91
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Zhao C, Hu G, Hou D, Yu L, Zhao Y, Wang J, Cao A, Zhai Y. Study on the effects of cations and anions on the removal of perfluorooctane sulphonate by nanofiltration membrane. Sep Purif Technol 2018. [DOI: 10.1016/j.seppur.2018.03.046] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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92
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Ahmed M, Kumar R, Al-Wazzan Y, Garudachari B, Thomas JP. Assessment of Performance of Inorganic Draw Solutions Tested in Forward Osmosis Process for Desalinating Arabian Gulf Seawater. ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING 2018. [DOI: 10.1007/s13369-018-3394-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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93
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Yang L, Bi L, Lei Z, Miao Y, Li B, Liu T, Wu W. Preparation of Amidoxime-Functionalized β-Cyclodextrin-Graft-(Maleic Anhydride-co-Acrylonitrule) Copolymer and Evaluation of the Adsorption and Regeneration Properties of Uranium. Polymers (Basel) 2018; 10:E236. [PMID: 30966271 PMCID: PMC6414990 DOI: 10.3390/polym10030236] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Revised: 02/20/2018] [Accepted: 02/22/2018] [Indexed: 11/25/2022] Open
Abstract
The β-cyclodextrin-graft-(maleic anhydride-co-acrylonitrule) copolymer (β-CD-g-(MAH-co-AN)) synthesized through radical polymerization reactions of β-cyclodextrin (β-CD) with maleic anhydride (MAH) and acrylonitrule (AN) in the special monomer proportion, chemically modify with amidoxime groups to obtained the new adsorbent, which was terms as amidoxime-functionalized β-cyclodextrin-graft-(maleic anhydride-co-acrylonitrule) copolymer (β-CD-g-(MAH-co-AO)). Based on the characteristic results of Fourier transform infrared spectra (FTIR), scanning electron microscopy (SEM), X-ray Diffraction (XRD), and thermalgravity analysis (TGA) techniques, the grafted nitrile groups were successfully converted to amidoxime groups by reaction with hydroxylamine. In this report, the influence of different factors such as pH value and ionic strength, solid-liquid ratio, contact time, initial U(VI) concentration, and temperature on adsorption was investigated by a batch adsorption experiment. The adsorption process fitting results show that the adsorption followed the Langmuir isotherm model and the maximum adsorption capacity was 0.747 g/g at pH 4.0. In addition, the regeneration performance was investigated by varying the concentration of eluent, temperature, and contact time. Under the desorption condition of 0.10 M HNO₃, the adsorbents can be reused 12 times in the case that the adsorption capacity was not significantly reduced. The functionalized copolymer exhibits high selectivity under circumstance of other co-existing ions is present in the solution.
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Affiliation(s)
- Liu Yang
- Radiochemistry Laboratory, School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China.
| | - Lei Bi
- Radiochemistry Laboratory, School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China.
| | - Zhiwei Lei
- Radiochemistry Laboratory, School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China.
| | - Yu Miao
- Radiochemistry Laboratory, School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China.
| | - Bolin Li
- Radiochemistry Laboratory, School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China.
| | - Tonghuan Liu
- Radiochemistry Laboratory, School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China.
| | - Wangsuo Wu
- Radiochemistry Laboratory, School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China.
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94
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Kirikoshi R, Manabe N, Takahashi O. Phosphate-Catalyzed Succinimide Formation from Asp Residues: A Computational Study of the Mechanism. Int J Mol Sci 2018; 19:ijms19020637. [PMID: 29495268 PMCID: PMC5855859 DOI: 10.3390/ijms19020637] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2018] [Revised: 02/22/2018] [Accepted: 02/22/2018] [Indexed: 01/15/2023] Open
Abstract
Aspartic acid (Asp) residues in proteins and peptides are prone to the non-enzymatic reactions that give biologically uncommon l-β-Asp, d-Asp, and d-β-Asp residues via the cyclic succinimide intermediate (aminosuccinyl residue, Suc). These abnormal Asp residues are known to have relevance to aging and pathologies. Despite being non-enzymatic, the Suc formation is thought to require a catalyst under physiological conditions. In this study, we computationally investigated the mechanism of the Suc formation from Asp residues that were catalyzed by the dihydrogen phosphate ion, H2PO4−. We used Ac–l-Asp–NHMe (Ac = acetyl, NHMe = methylamino) as a model compound. The H2PO4− ion (as a catalyst) and two explicit water molecules (as solvent molecules stabilizing the negative charge) were included in the calculations. All of the calculations were performed by density functional theory with the B3LYP functional. We revealed a phosphate-catalyzed two-step mechanism (cyclization–dehydration) of the Suc formation, where the first step is predicted to be rate-determining. In both steps, the reaction involved a proton relay mediated by the H2PO4− ion. The calculated activation barrier for this mechanism (100.3 kJ mol−1) is in reasonable agreement with an experimental activation energy (107 kJ mol−1) for the Suc formation from an Asp-containing peptide in a phosphate buffer, supporting the catalytic mechanism of the H2PO4− ion that is revealed in this study.
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Affiliation(s)
- Ryota Kirikoshi
- Faculty of Pharmaceutical Sciences, Tohoku Medical and Pharmaceutical University, 4-4-1 Komatsushima, Aoba-ku, Sendai 981-8558, Japan.
| | - Noriyoshi Manabe
- Faculty of Pharmaceutical Sciences, Tohoku Medical and Pharmaceutical University, 4-4-1 Komatsushima, Aoba-ku, Sendai 981-8558, Japan.
| | - Ohgi Takahashi
- Faculty of Pharmaceutical Sciences, Tohoku Medical and Pharmaceutical University, 4-4-1 Komatsushima, Aoba-ku, Sendai 981-8558, Japan.
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95
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Alpert AJ. Effect of salts on retention in hydrophilic interaction chromatography. J Chromatogr A 2018; 1538:45-53. [DOI: 10.1016/j.chroma.2018.01.038] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2017] [Revised: 01/08/2018] [Accepted: 01/17/2018] [Indexed: 11/25/2022]
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96
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Ferreira LA, Uversky VN, Zaslavsky BY. Effects of the Hofmeister series of sodium salts on the solvent properties of water. Phys Chem Chem Phys 2018; 19:5254-5261. [PMID: 28150000 DOI: 10.1039/c6cp08214a] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The solvent features of water (solvent dipolarity/polarizability, π*, hydrogen bond donor acidity, α, and hydrogen bond acceptor basicity, β) were examined in aqueous solutions of Na2SO4, NaF, CH3COONa, NaCl, NaBr, NaI, and NaClO4 at concentrations of each salt from 0 to 1.0 M (up to 2.0 M for NaClO4). The solvent features of water in solutions of different concentrations for each salt were found to be linearly related as π* = z + aα + bβ. The coefficients of this relationship were suggested to represent the signature of the salt effect on the solvent features of water. The normalized distances for each salt were calculated using glucose as a reference compound. These distances may be used as the relative measures of the salt-water interactions. It is demonstrated that the distances for all salts examined are interrelated with structural water entropies and static polarizabilities of anions. It is shown that the distance may be used as a measure of the relative effects of salts on precipitation of ferric oxide, excessive chemical potential of propanol in salt solutions, surface tension, and viscosity. The distance represents the relative measure of the salt effect on the solvent features of water in a salt solution. The examples presented confirm that the approach used does enable us to characterize the differences between the effects of salts in the Hofmeister series on the properties of water.
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Affiliation(s)
- L A Ferreira
- Cleveland Diagnostics, 3615 Superior Ave., Suite 4407B, Cleveland, Ohio 44114, USA.
| | - V N Uversky
- Department of Molecular Medicine and Byrd Alzheimer's Research Institute, Morsani College of Medicine, University of South Florida, Tampa, FL 33612, USA
| | - B Y Zaslavsky
- Cleveland Diagnostics, 3615 Superior Ave., Suite 4407B, Cleveland, Ohio 44114, USA.
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97
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Fernández–d'Arlas B, Huertos MÁ, Müller AJ. Ion-macromolecule interactions studied with model polyurethanes. J Colloid Interface Sci 2018; 509:102-112. [DOI: 10.1016/j.jcis.2017.08.099] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2017] [Revised: 08/29/2017] [Accepted: 08/30/2017] [Indexed: 11/25/2022]
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98
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Horner A, Siligan C, Cornean A, Pohl P. Positively charged residues at the channel mouth boost single-file water flow. Faraday Discuss 2018; 209:55-65. [PMID: 29972179 PMCID: PMC6161257 DOI: 10.1039/c8fd00050f] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Positively charged residues in the vicinity of the channel entrance or exit accelerate single-file water flow.
Water molecules lose two of their four bulk neighbours when entering single-file channels. This process may be sensitive to the presence of positive and negative charges at the channel mouth, since the costs for dehydrating cations and anions differ by a large margin. However, it is not known whether entrance charges affect the single channel water permeability (pf). So far, pf is only known to be governed by H-bond formation between permeating water molecules and wall-lining residues. Here we compare the pf values of five different aquaporin species (AQP1, AQPZ, AQP4 wild type, and two phosphorylation mimicking AQP4 mutants) that offer the same number of hydrogen bond donating and receiving residues in their single-file region but display different entrance charges. The pf measurements were performed with reconstituted lipid vesicles. We assessed (i) the osmotically induced vesicle deflation from the light scattering intensity in a stopped-flow device and (ii) the aquaporin abundance by fluorescence correlation spectroscopy. Substitution of serine at positions 111 and 180 in AQP4 for aspartic acid showed only a marginal effect on pf, suggesting that negative entrance charges are of minor importance. In contrast, the total number of positively charged amino acid side chains at entrances and exits correlates with pf: a total of three, four and seven charges of AQP4, AQPZ, and AQP1 translate into pf values of 1.1, 1.8, and 3.2 × 10–13 cm3 s–1, respectively. Thus, positive interfacial charges boost the pf value of AQP1 to three times the value of AQP4. Nevertheless, the number of hydrogen bond donating and receiving residues in the single-file region remains the major determinant of pf. Their effect on pf may be a hundredfold larger than that of interfacial charges.
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Affiliation(s)
- Andreas Horner
- Institute of Biophysics, Johannes Kepler University Linz, Gruberstr. 40, 4020 Linz, Austria.
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99
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Gheytani S, Liang Y, Wu F, Jing Y, Dong H, Rao KK, Chi X, Fang F, Yao Y. An Aqueous Ca-Ion Battery. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2017; 4:1700465. [PMID: 29270352 PMCID: PMC5737234 DOI: 10.1002/advs.201700465] [Citation(s) in RCA: 89] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2017] [Revised: 09/11/2017] [Indexed: 05/25/2023]
Abstract
Multivalent-ion batteries are emerging as low-cost, high energy density, and safe alternatives to Li-ion batteries but are challenged by slow cation diffusion in electrode materials due to the high polarization strength of Mg- and Al-ions. In contrast, Ca-ion has a low polarization strength similar to that of Li-ion, therefore a Ca-ion battery will share the advantages while avoiding the kinetics issues related to multivalent batteries. However, there is no battery known that utilizes the Ca-ion chemistry due to the limited success in Ca-ion storage materials. Here, a safe and low-cost aqueous Ca-ion battery based on a highly reversible polyimide anode and a high-potential open framework copper hexacyanoferrate cathode is demonstrated. The prototype cell shows a stable capacity and high efficiency at both high and low current rates, with an 88% capacity retention and an average 99% coloumbic efficiency after cycling at 10C for 1000 cycles. The Ca-ion storage mechanism for both electrodes as well as the origin of the fast kinetics have been investigated. Additional comparison with a Mg-ion cell with identical electrodes reveals clear kinetics advantages for the Ca-ion system, which is explained by the smaller ionic radii and more facile desolvation of hydrated Ca-ions.
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Affiliation(s)
- Saman Gheytani
- Department of Electrical and Computer Engineering and Materials Science and Engineering Program University of Houston Houston TX 77204 USA
| | - Yanliang Liang
- Department of Electrical and Computer Engineering and Materials Science and Engineering Program University of Houston Houston TX 77204 USA
| | - Feilong Wu
- Department of Materials Science Fudan University Shanghai 200433 China
| | - Yan Jing
- Department of Electrical and Computer Engineering and Materials Science and Engineering Program University of Houston Houston TX 77204 USA
| | - Hui Dong
- Department of Electrical and Computer Engineering and Materials Science and Engineering Program University of Houston Houston TX 77204 USA
| | - Karun K Rao
- Department of Chemical and Biomolecular Engineering University of Houston Houston TX 77204 USA
| | - Xiaowei Chi
- Department of Electrical and Computer Engineering and Materials Science and Engineering Program University of Houston Houston TX 77204 USA
| | - Fang Fang
- Department of Materials Science Fudan University Shanghai 200433 China
| | - Yan Yao
- Department of Electrical and Computer Engineering and Materials Science and Engineering Program University of Houston Houston TX 77204 USA
- Texas Center for Superconductivity at the University of Houston Houston TX 77204 USA
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100
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