Adsorption of aquatic Cd using a combination of bacteria and modified carbon fiber
Batch experiments were conducted to investigate the capacity and mechanisms for adsorbing Cd 2+ from aqueous solutions by the composite material. The composite material was manufactured with Plesiomonas shigelloides strain H5 and modified polyacrylonitrile-based carbon fiber. Experimental results sh...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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SAGE Publications
2018-05-01
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| Series: | Adsorption Science & Technology |
| Online Access: | https://doi.org/10.1177/0263617417724946 |
| _version_ | 1797283085825343488 |
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| author | Chao Xue Peishi Qi Yunzhi Liu |
| author_facet | Chao Xue Peishi Qi Yunzhi Liu |
| author_sort | Chao Xue |
| collection | DOAJ |
| description | Batch experiments were conducted to investigate the capacity and mechanisms for adsorbing Cd 2+ from aqueous solutions by the composite material. The composite material was manufactured with Plesiomonas shigelloides strain H5 and modified polyacrylonitrile-based carbon fiber. Experimental results showed that the surface areas of modified polyacrylonitrile-based carbon fiber increased by 58.54% and pore width increased by 40.19% compared with unmodified polyacrylonitrile-based carbon fiber. Boehm’s titration results show the surface acid sites of composite material were increased by 712% compared with unmodified polyacrylonitrile-based carbon fiber. The field emission scanning electron microscope results show P. shigelloides H5 can be grown on the surface of modified polyacrylonitrile-based carbon fiber closely. The equilibrium removal rate and sorption quantity of composite material were 71.56% and 7.126 mg g −1 , respectively. With the pH value of aqueous solution increased, the removal rate of Cd 2+ ions was also increased, but the change of temperature and ionic strength had no significant effect on the removal rate. Furthermore, the results showed the whole sorption process was a good fit to Lagergren pseudo-second-order model and Freundlich isotherms model. Therefore, the results infer that there was a heterogeneous distribution of active sites, and then the sorption process was chemical adsorption and multilayer adsorption. In a word, microbial composite carbon fiber material can adsorb Cd 2+ ions from aqueous solution effectively, which might be helpful in wastewater treatment in the future. |
| first_indexed | 2024-03-07T17:26:03Z |
| format | Article |
| id | doaj.art-36f5cf76d06e4281b2470e6f25ce6e31 |
| institution | Directory Open Access Journal |
| issn | 0263-6174 2048-4038 |
| language | English |
| last_indexed | 2024-03-07T17:26:03Z |
| publishDate | 2018-05-01 |
| publisher | SAGE Publications |
| record_format | Article |
| series | Adsorption Science & Technology |
| spelling | doaj.art-36f5cf76d06e4281b2470e6f25ce6e312024-03-02T19:11:42ZengSAGE PublicationsAdsorption Science & Technology0263-61742048-40382018-05-013610.1177/0263617417724946Adsorption of aquatic Cd using a combination of bacteria and modified carbon fiberChao XuePeishi QiYunzhi LiuBatch experiments were conducted to investigate the capacity and mechanisms for adsorbing Cd 2+ from aqueous solutions by the composite material. The composite material was manufactured with Plesiomonas shigelloides strain H5 and modified polyacrylonitrile-based carbon fiber. Experimental results showed that the surface areas of modified polyacrylonitrile-based carbon fiber increased by 58.54% and pore width increased by 40.19% compared with unmodified polyacrylonitrile-based carbon fiber. Boehm’s titration results show the surface acid sites of composite material were increased by 712% compared with unmodified polyacrylonitrile-based carbon fiber. The field emission scanning electron microscope results show P. shigelloides H5 can be grown on the surface of modified polyacrylonitrile-based carbon fiber closely. The equilibrium removal rate and sorption quantity of composite material were 71.56% and 7.126 mg g −1 , respectively. With the pH value of aqueous solution increased, the removal rate of Cd 2+ ions was also increased, but the change of temperature and ionic strength had no significant effect on the removal rate. Furthermore, the results showed the whole sorption process was a good fit to Lagergren pseudo-second-order model and Freundlich isotherms model. Therefore, the results infer that there was a heterogeneous distribution of active sites, and then the sorption process was chemical adsorption and multilayer adsorption. In a word, microbial composite carbon fiber material can adsorb Cd 2+ ions from aqueous solution effectively, which might be helpful in wastewater treatment in the future.https://doi.org/10.1177/0263617417724946 |
| spellingShingle | Chao Xue Peishi Qi Yunzhi Liu Adsorption of aquatic Cd using a combination of bacteria and modified carbon fiber Adsorption Science & Technology |
| title | Adsorption of aquatic Cd using a combination of bacteria and modified carbon fiber |
| title_full | Adsorption of aquatic Cd using a combination of bacteria and modified carbon fiber |
| title_fullStr | Adsorption of aquatic Cd using a combination of bacteria and modified carbon fiber |
| title_full_unstemmed | Adsorption of aquatic Cd using a combination of bacteria and modified carbon fiber |
| title_short | Adsorption of aquatic Cd using a combination of bacteria and modified carbon fiber |
| title_sort | adsorption of aquatic cd using a combination of bacteria and modified carbon fiber |
| url | https://doi.org/10.1177/0263617417724946 |
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