| Elimination of zinc ions from aqueous solution by a hydroxylapatite-biochar composite material with the hierarchical porous microstructures of sugarcane waste | |
Zhu, Zongqiang ; Wu, Yuqing; Hu, Chengzhi; Zhang, Lihao; Ding, Hui; Zhu, Yinian; Fan, Yinming; Deng, Huan; Zhou, Xiaobin; Tang, Shen
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| 2022-08-15 | |
| Source Publication | JOURNAL OF CLEANER PRODUCTION
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| ISSN | 0959-6526 |
| Volume | 362Issue:0Pages:132483 |
| Abstract | A hydroxylapatite-biochar composite material with the hierarchical porous microstructures of sugarcane top internodes (HAP/C-SC) was produced by carbonizing sugarcane top stalks, an agricultural waste residue, and then soaking them in limewater and (NH4)(2)HPO4 solution in turns. The HAP/C-SC with the surface area of 8.52-28.44 m(2)/g inherited various macropores from parallel vessels, thick-walled cells of sclerenchyma, thin-walled cells of storage parenchyma, and pits in cell and vessel walls of sugarcane top stalks. When the initial Zn2+ concentration is 5-400 mg/L, the Zn2+ absorption capacity of HAP/C-SC is 19.91, 22.54, and 25.37 mg/g at 25 degrees C, 35 degrees C, and 45 degrees C, respectively, which is equivalent to the Zn2+ absorption capacity of synthetic nano-hydroxyapatite. The HAP/C-SC showed a good removal performance for Zn cations, and the adsorption followed Langmuir model and pseudo-second-order kinetic model well. The Zn-containing hydroxylapatite solid solutions [(ZnxCa1?x)(5)(PO4)(3)(OH)] were considered to be the key mechanism for Zn2+ elimination, which formed through the co-action processes including adsorption, ion exchange (x = 0.06-0.12) and dissolution-precipitation (x = similar to 0.27). The M(2) vacancy sites are believed to be energetically more favorable for the Zn ion occupation. The substitution and occupation of M(2) sites by Zn ions may be affected by spatial constraints. |
| Department | 环境水质学国家重点实验室 ; 环境水质学国家重点实验室 |
| Keyword | HEAVY-METAL IONS ZN(II) IONS COMPETITIVE ADSORPTION SORPTION BEHAVIOR SINGLE-METAL CANE BAGASSE REMOVAL HYDROXYAPATITE WATER PHOSPHATE |
| Document Type | 期刊论文 |
| Identifier | https://ir.rcees.ac.cn/handle/311016/47692 |
| Collection | 环境水质学国家重点实验室 |
| Affiliation | 1.Guilin Univ Technol, Guangxi Key Lab Environm Pollut Control Theory & T, Guilin 541004, Peoples R China 2.Chinese Acad Sci, State Key Lab Environm Aquat Chem, Res Ctr Ecoenvironm Sci, Beijing 100085, Peoples R China 3.Guilin Univ Technol, Collaborat Innovat Ctr Water Pollut Control & Wate, Guilin 541004, Peoples R China 4.Tech Innovat Ctr Mine Geol Environm Restorat Engn, Nanning 530022, Peoples R China |
| Recommended Citation GB/T 7714 | Zhu, Zongqiang,Wu, Yuqing,Hu, Chengzhi,et al. Elimination of zinc ions from aqueous solution by a hydroxylapatite-biochar composite material with the hierarchical porous microstructures of sugarcane waste[J]. JOURNAL OF CLEANER PRODUCTION,2022,362(0):132483. |
| APA | Zhu, Zongqiang.,Wu, Yuqing.,Hu, Chengzhi.,Zhang, Lihao.,Ding, Hui.,...&Tang, Shen.(2022).Elimination of zinc ions from aqueous solution by a hydroxylapatite-biochar composite material with the hierarchical porous microstructures of sugarcane waste.JOURNAL OF CLEANER PRODUCTION,362(0),132483. |
| MLA | Zhu, Zongqiang,et al."Elimination of zinc ions from aqueous solution by a hydroxylapatite-biochar composite material with the hierarchical porous microstructures of sugarcane waste".JOURNAL OF CLEANER PRODUCTION 362.0(2022):132483. |
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