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Trinh PB, Schäfer AI. Adsorption of glyphosate and metabolite aminomethylphosphonic acid (AMPA) from water by polymer-based spherical activated carbon (PBSAC). J Hazard Mater 2023; 454:131211. [PMID: 37121034 DOI: 10.1016/j.jhazmat.2023.131211] [Citation(s) in RCA: 4] [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] [Received: 11/16/2022] [Revised: 03/06/2023] [Accepted: 03/13/2023] [Indexed: 05/19/2023]
Abstract
Glyphosate (GLY) is the most commonly used herbicide worldwide, and aminomethylphosphonic acid (AMPA) is its main metabolite. Their occurrence in ground and surface waters causes diseases in humans, while complex physico-chemical properties hinder detection and effective removal. Polymer-based spherical activated carbon (PBSAC) can adsorb many micropollutants efficiently and, hence, overcome the shortfalls of conventional treatment methods. The static adsorption of a mixture of GLY and AMPA by PBSAC was investigated with varying PBSAC properties and relevant solution chemistry. The results show that PBSAC can remove 95% GLY and 57% AMPA from an initial concentration of 1 µg/L at pH 8.2. PBSAC properties (size, activation level, and surface charge) have a strong influence on herbicide removal, where surface area plays a key role. Low to neutral pH favors non-charge interactions and results in good adsorption, while higher temperatures equally enhance GLY/AMPA adsorption by PBSAC. The work demonstrated the effective removal of GLY to meet the European guideline concentration (0.1 µg/L), while AMPA could not be removed to the required level.
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Affiliation(s)
- Phuong Bich Trinh
- Institute for Advanced Membrane Technology (IAMT), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Andrea Iris Schäfer
- Institute for Advanced Membrane Technology (IAMT), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany.
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Nguyen MN, Weidler PG, Schwaiger R, Schäfer AI. Interactions between carbon-based nanoparticles and steroid hormone micropollutants in water. J Hazard Mater 2021; 402:122929. [PMID: 32712362 DOI: 10.1016/j.jhazmat.2020.122929] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [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: 01/29/2020] [Revised: 05/11/2020] [Accepted: 05/11/2020] [Indexed: 06/11/2023]
Abstract
The occurrence of micropollutants (MPs) including steroid hormones is a global environmental and health challenge. Carbon-based nanoparticles can be incorporated with water treatment processes to allow MP removal by adsorption. The aim was to compare the suitability of such nanoparticles (graphene, graphene oxide, carbon nanotubes and C60) to adsorb steroid hormones for later incorporation in membrane composites. All nanoparticles displayed fast kinetics; carbon nanotubes and graphene showed high adsorption capacities for hormones undeterminable in isotherm studies (over 10 mg/g). External surface adsorption appears to be the most prominent factor impacting adsorption performance. Structure, conformation, geometry and surface charge of nanoparticles can influence the accessibility of surface area through colloidal instability in aqueous solution. Mechanism inspection shows that adsorption initiates at long ranges (up to 10 nm) through hydrophobic and electrostatic interactions. At relatively short ranges (0.2-0.5 nm), adsorption is enhanced by π/π stacking, XH / π (X = C, O) interactions, van der Waals forces and hydrogen bonding. Both long- and short-range forces transporting hormones from the liquid bulk into the adsorbed phase could control the rate. With relatively short residence time required and high adsorption capacity, carbon nanotubes and graphene are promising for incorporation in a membrane composite.
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Affiliation(s)
- Minh Nhat Nguyen
- Institute for Advanced Membrane Technology (IAMT), Hermann-von-Helmholtz-Platz 1, 76344, Eggenstein-Leopoldshafen, Germany
| | - Peter Georg Weidler
- Institute of Functional Interfaces (IFG), Hermann-von-Helmholtz-Platz 1, 76344, Eggenstein-Leopoldshafen, Germany
| | - Ruth Schwaiger
- Institute for Applied Materials (IAM), Hermann-von-Helmholtz-Platz 1, 76344, Eggenstein-Leopoldshafen, Germany(1)
| | - Andrea Iris Schäfer
- Institute for Advanced Membrane Technology (IAMT), Hermann-von-Helmholtz-Platz 1, 76344, Eggenstein-Leopoldshafen, Germany.
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Song S, Song Y, Shi M, Hu Z, Li T, Lin S. Transport and numerical simulation of Cu 2+ in saturated porous medium in the presence of magnetic nanoparticles. Environ Sci Pollut Res Int 2019; 26:35827-35837. [PMID: 31705411 DOI: 10.1007/s11356-019-06441-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [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: 03/22/2019] [Accepted: 09/05/2019] [Indexed: 06/10/2023]
Abstract
Fe3O4 magnetic nanoparticles (MNPs) can control and remove heavy metal pollution from wastewater. This approach has gained broad attention due to its excellent surface properties. However, there have been limited studies for Cu2+ retention and transfer regulation in saturated porous media in the presence of MNPs. The objectives of this study were to analyze the migration and deposition mechanism of Cu2+ under different conditions through static adsorption and numerical models. The results indicated that the MNPs-quartz sand had better adsorption capacity for Cu2+ (59.1 mg/kg) than quartz sand only (26.84 mg/kg), and thus it inhibited the migration of Cu2+; the effect improved with increasing MNP content. Furthermore, high ion strength (IS) and flow velocity were beneficial to the migration of Cu2+, and a high pH inhibited the migration of Cu2+. The numerical simulation results showed that the two-site model (TSM) nicely fitted the migration of Cu2+ in quartz sand and MNPs-sand. The migration of Cu2+ in both media was affected by chemical nonequilibrium. We also found that the presence of MNPs had little impact on the dispersion of porous media by observing the fitting parameters D (dispersion coefficient) 0.202 for both media. Our results can evaluate the risk of heavy metal migration and retention in saturated porous media in the presence of nanoparticles; this can prevent aquifer pollution.
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Affiliation(s)
- Shihui Song
- School of Environment, Northeast Normal University, No. 2555, Jingyue Street, Changchun, 130117, Jilin, People's Republic of China
| | - Yinghao Song
- School of Environment, Northeast Normal University, No. 2555, Jingyue Street, Changchun, 130117, Jilin, People's Republic of China
| | - Mengdi Shi
- School of Environment, Northeast Normal University, No. 2555, Jingyue Street, Changchun, 130117, Jilin, People's Republic of China
| | - Zheng Hu
- School of Environment, Northeast Normal University, No. 2555, Jingyue Street, Changchun, 130117, Jilin, People's Republic of China
| | - Tianyu Li
- School of Environment, Northeast Normal University, No. 2555, Jingyue Street, Changchun, 130117, Jilin, People's Republic of China
| | - Shanshan Lin
- School of Environment, Northeast Normal University, No. 2555, Jingyue Street, Changchun, 130117, Jilin, People's Republic of China.
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Shi C, Lv C, Wu L, Hou X. Porous chitosan/hydroxyapatite composite membrane for dyes static and dynamic removal from aqueous solution. J Hazard Mater 2017; 338:241-249. [PMID: 28570878 DOI: 10.1016/j.jhazmat.2017.05.022] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [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: 03/14/2017] [Revised: 05/05/2017] [Accepted: 05/12/2017] [Indexed: 06/07/2023]
Abstract
The unique characteristics of Chitosan (CS) such as resource abundance, good biocompatibility, film-forming ability and sufficient sites (NH2 and OH) for adsorption of heavy metals or organic pollutants make CS-based membranes a promising membrane adsorbent. In this work, a porous Chitosan/Hydroxyapatite (CS/HA) membrane with a sponge-like surface and a three-dimensional interpenetrated porous structure of about mean pore size less than 10μm was developed. The most striking advantage of the proposed membrane lies on the integration of appreciably high adsorption capacity (as compared with current CS-based membranes, also 2.5 times and 4 times higher than that of non-porous CS/HA membrane and the commercially available activate carbon) and the high-speed dynamic dye removal (98% or even better in less than 15min). Besides, the synthesis protocol for the proposed membrane is also much simpler, environmental-friendly and economical. Moreover, the proposed membrane also featured repeated dye removal (above 80% after 5 cycles of dynamic adsorption at dye concentration of 150mgL-1). All the above advantages indicated the intriguing potential of the porous membrane in practical wastewater treatment.
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Affiliation(s)
- Chaoting Shi
- Analytical & Testing Center, Sichuan University, Chengdu, Sichuan 610064, China
| | - Caizhi Lv
- Analytical & Testing Center, Sichuan University, Chengdu, Sichuan 610064, China
| | - Lan Wu
- Analytical & Testing Center, Sichuan University, Chengdu, Sichuan 610064, China.
| | - Xiandeng Hou
- Analytical & Testing Center, Sichuan University, Chengdu, Sichuan 610064, China; College of Chemistry, Sichuan University, Chengdu, 610064, China
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Ajmani GS, Cho HH, Abbott Chalew TE, Schwab KJ, Jacangelo JG, Huang H. Static and dynamic removal of aquatic natural organic matter by carbon nanotubes. Water Res 2014; 59:262-270. [PMID: 24810742 DOI: 10.1016/j.watres.2014.04.030] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2014] [Revised: 04/02/2014] [Accepted: 04/12/2014] [Indexed: 06/03/2023]
Abstract
Carbon nanotubes (CNTs) were investigated for their capability and mechanisms to simultaneously remove colloidal natural organic matter (NOM) and humic substances from natural surface water. Static removal testing was conducted via adsorption experiments while dynamic removal was evaluated by layering CNTs onto substrate membranes and filtering natural water through the CNT-layered membranes. Analyses of treated water samples showed that removal of humic substances occurred via adsorption under both static and dynamic conditions. Removal of colloidal NOM occurred at a moderate level of 36-66% in static conditions, independent of the specific surface area (SSA) of CNTs. Dynamic removal of colloidal NOM increased from approximately 15% with the unmodified membrane to 80-100% with the CNT-modified membranes. Depth filtration played an important role in colloidal NOM removal. A comparison of the static and dynamic removal of humic substances showed that equilibrium static removal was higher than dynamic (p < 0.01), but there was also a significant linear relationship between static and dynamic removal (p < 0.05). Accounting for contact time of CNTs with NOM during filtration, it appeared that CNT mat structure was an important determinant of removal efficiencies for colloidal NOM and humic substances during CNT membrane filtration.
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Affiliation(s)
- Gaurav S Ajmani
- Center for Water and Health, Johns Hopkins University, Baltimore, MD 21205, USA
| | - Hyun-Hee Cho
- SD Center, KOLON Water & Energy Co., LTD., Seocho-3dong, Seocho-gu, Seoul 137-870, South Korea
| | | | - Kellogg J Schwab
- Center for Water and Health, Johns Hopkins University, Baltimore, MD 21205, USA
| | - Joseph G Jacangelo
- Center for Water and Health, Johns Hopkins University, Baltimore, MD 21205, USA; MWH, Lovettsville, VA 20180, USA
| | - Haiou Huang
- Center for Water and Health, Johns Hopkins University, Baltimore, MD 21205, USA; State Joint Key Laboratory of Environmental Simulation and Pollution Control, School of Environment, Beijing Normal University, Beijing 100875, China.
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