Influence of Fe₂O₃ and bacterial biofilms on Cu(II) distribution in a simulated aqueous solution: a feasibility study to sediments in the Pearl River Estuary (PR China)
This study investigated physico-chemical interactions among Cu(II), biogenic materials, and Fe2O3 in a continuous-flow biofilm reactor system under a well-controlled environment. The effects of Fe2O3 and bacterial biofilms on the distribution of Cu(II) in a simulated aquatic environment were studied...
| Main Authors: | , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
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2023
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| Online Access: | https://hdl.handle.net/10356/172445 |
| _version_ | 1824453652862992384 |
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| author | Kurniawan, Tonni Agustiono Lo, Waihung Othman, Mohd Hafiz Dzarfan Liang, Xue Goh, Hui Hwang Chew, Kit Wayne |
| author2 | School of Chemistry, Chemical Engineering and Biotechnology |
| author_facet | School of Chemistry, Chemical Engineering and Biotechnology Kurniawan, Tonni Agustiono Lo, Waihung Othman, Mohd Hafiz Dzarfan Liang, Xue Goh, Hui Hwang Chew, Kit Wayne |
| author_sort | Kurniawan, Tonni Agustiono |
| collection | NTU |
| description | This study investigated physico-chemical interactions among Cu(II), biogenic materials, and Fe2O3 in a continuous-flow biofilm reactor system under a well-controlled environment. The effects of Fe2O3 and bacterial biofilms on the distribution of Cu(II) in a simulated aquatic environment were studied. To control biological and abiotic elements in the marine environment, a biofilm reactor was designed to understand the metal speciation of Cu(II) and its distribution. The reactor consisted of a biofilm chamber equipped with glass slides for biofilms attachment. Due to its ability to grow as biofilm in the medium, Pseudomonas atlantica was cultivated to adsorb trace Cu(II) to attached and suspended cells. It was found that biofilms with 170-285 mequiv chemical oxygen demand (COD) concentration/m2 of total oxidizable materials accelerated the Cu(II) adsorption to the surface of the reactor significantly by a factor of five. A significant inhibition to the bacterial growth took place (p ≤ 0.05; t-test) when Cu(II) concentration was higher than 0.5 mg/L. In the absence of Cu(II), bacterial cells grew normally to 0.075 of optical density (OD). However, at the Cu(II) concentration of 0.2 mg/L, the cells grew to a lower OD of 0.58. The presence of glycine and EDTA substantially reduced the toxicity of Cu(II) on bacterial growth (p ≤ 0.05; paired t-test). Their complexation with Cu(II) rendered the metal ions less available to bacterial cells. This implies that the Fe2O3 and bacterial biofilm affected Cu(II) distribution and speciation in the aquatic environment. |
| first_indexed | 2025-02-19T03:09:50Z |
| format | Journal Article |
| id | ntu-10356/172445 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2025-02-19T03:09:50Z |
| publishDate | 2023 |
| record_format | dspace |
| spelling | ntu-10356/1724452023-12-11T01:33:21Z Influence of Fe₂O₃ and bacterial biofilms on Cu(II) distribution in a simulated aqueous solution: a feasibility study to sediments in the Pearl River Estuary (PR China) Kurniawan, Tonni Agustiono Lo, Waihung Othman, Mohd Hafiz Dzarfan Liang, Xue Goh, Hui Hwang Chew, Kit Wayne School of Chemistry, Chemical Engineering and Biotechnology Engineering::Chemical engineering Adsorption Biological Treatment This study investigated physico-chemical interactions among Cu(II), biogenic materials, and Fe2O3 in a continuous-flow biofilm reactor system under a well-controlled environment. The effects of Fe2O3 and bacterial biofilms on the distribution of Cu(II) in a simulated aquatic environment were studied. To control biological and abiotic elements in the marine environment, a biofilm reactor was designed to understand the metal speciation of Cu(II) and its distribution. The reactor consisted of a biofilm chamber equipped with glass slides for biofilms attachment. Due to its ability to grow as biofilm in the medium, Pseudomonas atlantica was cultivated to adsorb trace Cu(II) to attached and suspended cells. It was found that biofilms with 170-285 mequiv chemical oxygen demand (COD) concentration/m2 of total oxidizable materials accelerated the Cu(II) adsorption to the surface of the reactor significantly by a factor of five. A significant inhibition to the bacterial growth took place (p ≤ 0.05; t-test) when Cu(II) concentration was higher than 0.5 mg/L. In the absence of Cu(II), bacterial cells grew normally to 0.075 of optical density (OD). However, at the Cu(II) concentration of 0.2 mg/L, the cells grew to a lower OD of 0.58. The presence of glycine and EDTA substantially reduced the toxicity of Cu(II) on bacterial growth (p ≤ 0.05; paired t-test). Their complexation with Cu(II) rendered the metal ions less available to bacterial cells. This implies that the Fe2O3 and bacterial biofilm affected Cu(II) distribution and speciation in the aquatic environment. Dr. Kurniawan thanks the Universiti Teknologi Malaysia (UTM) for the grants No. Q.J130000.21A6.00P14 and No. Q. J130000.3809.22H07. Dr. Lo is grateful for the support of the Research Grant Council (RGC) of Hong Kong SAR (PR China) (No. PolyU 5101/ 03E). 2023-12-11T01:33:21Z 2023-12-11T01:33:21Z 2023 Journal Article Kurniawan, T. A., Lo, W., Othman, M. H. D., Liang, X., Goh, H. H. & Chew, K. W. (2023). Influence of Fe₂O₃ and bacterial biofilms on Cu(II) distribution in a simulated aqueous solution: a feasibility study to sediments in the Pearl River Estuary (PR China). Journal of Environmental Management, 329, 117047-. https://dx.doi.org/10.1016/j.jenvman.2022.117047 0301-4797 https://hdl.handle.net/10356/172445 10.1016/j.jenvman.2022.117047 36563449 2-s2.0-85144354662 329 117047 en Journal of Environmental Management © 2022 Elsevier Ltd. All rights reserved. |
| spellingShingle | Engineering::Chemical engineering Adsorption Biological Treatment Kurniawan, Tonni Agustiono Lo, Waihung Othman, Mohd Hafiz Dzarfan Liang, Xue Goh, Hui Hwang Chew, Kit Wayne Influence of Fe₂O₃ and bacterial biofilms on Cu(II) distribution in a simulated aqueous solution: a feasibility study to sediments in the Pearl River Estuary (PR China) |
| title | Influence of Fe₂O₃ and bacterial biofilms on Cu(II) distribution in a simulated aqueous solution: a feasibility study to sediments in the Pearl River Estuary (PR China) |
| title_full | Influence of Fe₂O₃ and bacterial biofilms on Cu(II) distribution in a simulated aqueous solution: a feasibility study to sediments in the Pearl River Estuary (PR China) |
| title_fullStr | Influence of Fe₂O₃ and bacterial biofilms on Cu(II) distribution in a simulated aqueous solution: a feasibility study to sediments in the Pearl River Estuary (PR China) |
| title_full_unstemmed | Influence of Fe₂O₃ and bacterial biofilms on Cu(II) distribution in a simulated aqueous solution: a feasibility study to sediments in the Pearl River Estuary (PR China) |
| title_short | Influence of Fe₂O₃ and bacterial biofilms on Cu(II) distribution in a simulated aqueous solution: a feasibility study to sediments in the Pearl River Estuary (PR China) |
| title_sort | influence of fe₂o₃ and bacterial biofilms on cu ii distribution in a simulated aqueous solution a feasibility study to sediments in the pearl river estuary pr china |
| topic | Engineering::Chemical engineering Adsorption Biological Treatment |
| url | https://hdl.handle.net/10356/172445 |
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