Hybrid organic - inorganic filter system for cadmium ions adsorption from aqueous solutions
The study reflects on the problem of heavy metals, namely cadmium, polluting the natural environment. The goal was to select the most efficient adsorber enabling ion exchange between calcium and cadmium in an aqueous environment and subsequently design a material hybrid organic-inorganic, particle-f...
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| Language: | English |
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Elsevier
2024-12-01
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| Series: | Results in Engineering |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2590123024015056 |
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| author | Dora Kroisova Josef Skrivanek Martin Bilek Stepanka Dvorackova Petr Zabka Artur Knap |
| author_facet | Dora Kroisova Josef Skrivanek Martin Bilek Stepanka Dvorackova Petr Zabka Artur Knap |
| author_sort | Dora Kroisova |
| collection | DOAJ |
| description | The study reflects on the problem of heavy metals, namely cadmium, polluting the natural environment. The goal was to select the most efficient adsorber enabling ion exchange between calcium and cadmium in an aqueous environment and subsequently design a material hybrid organic-inorganic, particle-fiber system that adsorbs cadmium from aqueous environments and will be easily included in the technological process. The novelty of this study lies in the use of waste food material – eggshells as a source of biogenic nanoparticles. These are applied to a nanofibrous structure made of polyvinyl butyral in amounts of 8 to 10%wt by weight by the AC electrospinning. (The experiment was performed with these boundary conditions: temperature was 23 °C, and humidity was 42 %. The high-electrical voltage amplifier generated a sinusoidal waveform with a frequency of 50 Hz and an amplitude of 32 kV) and were used for ion exchange. In ion exchange, cadmium ions are exchanged with calcium ions based on the principle of chemical similarity of the two elements expressed by the z/r ratio (charge/ radius ratio), the z/r ratio is 2.02 for calcium ions Ca2+ and 2.06 for cadmium Cd2. Separateted nanoparticles of calcium carbonate obtained by burning eggshells (727 °C) with dimensions from 100 to 200 nm and a specific surface area of 3.9 m2/g showed the highest adsorption capacity of 99.8 %, synthetic calcium carbonate at 71.8 %, and ground eggshells the lowest at 25.0 %. Designed and laboratory-tested filter system of nanoparticles - nanofibers captures 95.6 % and 96.8 % of cadmium ions from an aqueous solution within 10 min and 90 min, respectively, at a concentration of cadmium ions of 10 mg/l, and at several nanoparticles of 0.3 g. The ion exchange is carried out only on the filter surface, and after a specific time, the calcium carbonate nanoparticles are released from the filter probably due to absence of chemical bond between nanoparticles and nanostructures or the low density of the nanofibrous structure. SEM, EDX, FTIR, BET and TGA analysis were used for material evaluation. The adsorption capacity of used nanoparticles and filter adsorbers was evaluated according to residual amounts of cadmium ions in aqueous solutions using ICP-IOS. |
| format | Article |
| id | doaj-art-e43d1354ce8c443d9b0810f2b89e19c4 |
| institution | Kabale University |
| issn | 2590-1230 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Results in Engineering |
| spelling | doaj-art-e43d1354ce8c443d9b0810f2b89e19c42024-12-19T10:58:46ZengElsevierResults in Engineering2590-12302024-12-0124103251Hybrid organic - inorganic filter system for cadmium ions adsorption from aqueous solutionsDora Kroisova0Josef Skrivanek1Martin Bilek2Stepanka Dvorackova3Petr Zabka4Artur Knap5Department of Machining and Assembly, Faculty of Mechanical Engineering, Technical University of Liberec, Czech RepublicDepartment of Textile Machine Design, Faculty of Mechanical Engineering, Technical University of Liberec, Studentska 1402/2, 461 17 Liberec 1, Czech Republic; Corresponding author.Department of Textile Machine Design, Faculty of Mechanical Engineering, Technical University of Liberec, Studentska 1402/2, 461 17 Liberec 1, Czech RepublicDepartment of Machining and Assembly, Faculty of Mechanical Engineering, Technical University of Liberec, Czech RepublicDepartment of Textile Machine Design, Faculty of Mechanical Engineering, Technical University of Liberec, Studentska 1402/2, 461 17 Liberec 1, Czech RepublicDepartment of Machining and Assembly, Faculty of Mechanical Engineering, Technical University of Liberec, Czech RepublicThe study reflects on the problem of heavy metals, namely cadmium, polluting the natural environment. The goal was to select the most efficient adsorber enabling ion exchange between calcium and cadmium in an aqueous environment and subsequently design a material hybrid organic-inorganic, particle-fiber system that adsorbs cadmium from aqueous environments and will be easily included in the technological process. The novelty of this study lies in the use of waste food material – eggshells as a source of biogenic nanoparticles. These are applied to a nanofibrous structure made of polyvinyl butyral in amounts of 8 to 10%wt by weight by the AC electrospinning. (The experiment was performed with these boundary conditions: temperature was 23 °C, and humidity was 42 %. The high-electrical voltage amplifier generated a sinusoidal waveform with a frequency of 50 Hz and an amplitude of 32 kV) and were used for ion exchange. In ion exchange, cadmium ions are exchanged with calcium ions based on the principle of chemical similarity of the two elements expressed by the z/r ratio (charge/ radius ratio), the z/r ratio is 2.02 for calcium ions Ca2+ and 2.06 for cadmium Cd2. Separateted nanoparticles of calcium carbonate obtained by burning eggshells (727 °C) with dimensions from 100 to 200 nm and a specific surface area of 3.9 m2/g showed the highest adsorption capacity of 99.8 %, synthetic calcium carbonate at 71.8 %, and ground eggshells the lowest at 25.0 %. Designed and laboratory-tested filter system of nanoparticles - nanofibers captures 95.6 % and 96.8 % of cadmium ions from an aqueous solution within 10 min and 90 min, respectively, at a concentration of cadmium ions of 10 mg/l, and at several nanoparticles of 0.3 g. The ion exchange is carried out only on the filter surface, and after a specific time, the calcium carbonate nanoparticles are released from the filter probably due to absence of chemical bond between nanoparticles and nanostructures or the low density of the nanofibrous structure. SEM, EDX, FTIR, BET and TGA analysis were used for material evaluation. The adsorption capacity of used nanoparticles and filter adsorbers was evaluated according to residual amounts of cadmium ions in aqueous solutions using ICP-IOS.http://www.sciencedirect.com/science/article/pii/S2590123024015056AdsorptionCalcium carbonateCadmiumFiltrationNanofibersNanoparticles |
| spellingShingle | Dora Kroisova Josef Skrivanek Martin Bilek Stepanka Dvorackova Petr Zabka Artur Knap Hybrid organic - inorganic filter system for cadmium ions adsorption from aqueous solutions Results in Engineering Adsorption Calcium carbonate Cadmium Filtration Nanofibers Nanoparticles |
| title | Hybrid organic - inorganic filter system for cadmium ions adsorption from aqueous solutions |
| title_full | Hybrid organic - inorganic filter system for cadmium ions adsorption from aqueous solutions |
| title_fullStr | Hybrid organic - inorganic filter system for cadmium ions adsorption from aqueous solutions |
| title_full_unstemmed | Hybrid organic - inorganic filter system for cadmium ions adsorption from aqueous solutions |
| title_short | Hybrid organic - inorganic filter system for cadmium ions adsorption from aqueous solutions |
| title_sort | hybrid organic inorganic filter system for cadmium ions adsorption from aqueous solutions |
| topic | Adsorption Calcium carbonate Cadmium Filtration Nanofibers Nanoparticles |
| url | http://www.sciencedirect.com/science/article/pii/S2590123024015056 |
| work_keys_str_mv | AT dorakroisova hybridorganicinorganicfiltersystemforcadmiumionsadsorptionfromaqueoussolutions AT josefskrivanek hybridorganicinorganicfiltersystemforcadmiumionsadsorptionfromaqueoussolutions AT martinbilek hybridorganicinorganicfiltersystemforcadmiumionsadsorptionfromaqueoussolutions AT stepankadvorackova hybridorganicinorganicfiltersystemforcadmiumionsadsorptionfromaqueoussolutions AT petrzabka hybridorganicinorganicfiltersystemforcadmiumionsadsorptionfromaqueoussolutions AT arturknap hybridorganicinorganicfiltersystemforcadmiumionsadsorptionfromaqueoussolutions |