Biosorption of Lead (II), Copper (II) and Cadmium (II) in Singe-and Multi-metal Systems by Aerobic Granule Sludge by Fixed-Bed Column and Batch Sorption
Heavy metals are present in nature and industrial wastewater. Due to their mobility in natural water ecosystems and toxicity, the presence of heavy metals in surface water and ground water has become a major inorganic contamination problem. Discharge and treatment of industrial wastewater containing...
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| Những tác giả chính: | , |
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| Định dạng: | Journal article |
| Ngôn ngữ: | English |
| Được phát hành: |
2022
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| Những chủ đề: | |
| Truy cập trực tuyến: | http://scholar.dlu.edu.vn/handle/123456789/1539 |
| Các nhãn: |
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| Thư viện lưu trữ: | Thư viện Trường Đại học Đà Lạt |
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| Tóm tắt: | Heavy metals are present in nature and industrial wastewater. Due to their mobility in natural water ecosystems and toxicity, the presence of heavy metals in surface water and ground water has become a major inorganic contamination problem. Discharge and treatment of industrial wastewater containing heavy metals are important issues in environmental protection. If unrecognized or inappropriately treated, heavy-metal toxicity can result in serious hazards. The present work describes our study on the biosorption Lead (II), copper (II) and cadmium (II) ions onto aerobic granular sludge from single component and multi systems. Results showed that aerobic granules as a novel effective biosorbent for Pb2+, Cu2+ and Cd2+ ions removal. The metal removal capacity of aerobic biomass were six times higher than that of activated carbon, especially the cadmium removal capacity of aerobic biomass was very high. The biosorption of Pb2+, Cu2+ and Cd2+ ions from multi metals system were studied in equilibrium systems and in both batch sorption experiment and continuous flow column. The single-metal sorption uptake capacity of the aerobic granules for Pb2+ was slightly inhibited by the presence of Cd2+ only 17.9% and by the presence of Cu2+ ion by 25.6%. The affinitive order of aerobic granular sludge for the three metal ions was established as: Pb2+> Cu2+> Cd2+. Factors such as hydration effects and electronegative ions may contribute to the competitive sorption results. |
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