Crystallinity and dissolution-recrystallization mechanism controlled As(V) retention by calcium phosphate
文献类型：期刊论文
| 作者 | Yan, Yao1,3,5,6; Cao, Xun4; Li, Jun1,3,5,6; Zhang, Hanxiao1,3,5,6; Yang, Yongqiang1,3,6 ; Chen, Fanrong1,3,6; Zhu, Runliang1,3,6; Liu, Dong1,2,3,6; White, Tim4; Wu, Shijun1,3,6
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| 刊名 | JOURNAL OF HAZARDOUS MATERIALS
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| 出版日期 | 2025-01-05 |
| 卷号 | 481页码:14 |
| 关键词 | Hydroxylapatite (HAP) Amorphous calcium phosphate (ACP) Arsenate As(V) immobilization Mineral crystallinity Dissolution-recrystallization process |
| ISSN号 | 0304-3894 |
| DOI | 10.1016/j.jhazmat.2024.136517 |
| 英文摘要 | Retention of toxic metals/metalloids like arsenic via mineral-water interaction plays a crucial role in the environmental behavior of pollutants. However, the influence of mineral crystallinity on the retention of toxic elements, the evolution of liquid composition, and the interaction mechanism are poorly understood. This study investigated the interaction between As(V) and calcium phosphate (CaP) under oxic conditions with varying crystallinities, particularly amorphous CaP (ACP), across varying As(V) concentrations and pH conditions. Results revealed that the amorphous phase substantially influenced As(V) fate, with the As(V) retention potential of ACP and poorly crystalline hydroxylapatite (HAP) being 13.65 and 12.61 times higher than highly crystalline HAP, respectively. As(V) retention involves the dissolution of ACP and the recrystallization of As(V)-substituted HAP, correlated with three distinct ACP transformation stages during recrystallization. The lower pH (7.5) facilitated ACP dissolution, and the elevated Ca2+ concentration enhanced the volume of CaP recrystallization. Conversely, higher pH levels (8.0, 8.5, and 9.0) promoted a higher degree of recrystallization, evidenced by reduced residual Ca2+ levels after 48 hrs (post-crystallization stage). Meanwhile, As-bearing CaP forms with greater competition between PO43-and AsO43- at higher initial As(V) concentrations than lower ones. Addi- tionally, lattice distortion, increases in species of surface bond groups, and reduced crystallinity were observed in the As(V)-bearing CaP product. Overall, this study underscores the pivotal role of ACP and its poorly crystalline counterparts in arsenic retention through the dissolution-recrystallization mechanism. |
| WOS研究方向 | Engineering ; Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:001360780900001 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/82016]  |
| 专题 | 中国科学院矿物学与成矿学重点实验室 |
| 通讯作者 | White, Tim; Wu, Shijun |
| 作者单位 | 1.Chinese Acad Sci, Guangzhou Inst Geochem, Guangdong Prov Key Lab Mineral Phys & Mat, 511 Kehua St, Guangzhou 510640, Peoples R China 2.Guangdong Acad Sci, Inst Ecoenvironm & Soil Sci, Guangdong Prov Key Lab Integrated Agroenvironm Pol, 808 Tianyuan Rd, Guangzhou 510650, Peoples R China 3.Chinese Acad Sci, Guangzhou Inst Geochem, Key Lab Mineral & Metallogeny, 511 Kehua St, Guangzhou 510640, Peoples R China 4.Nanyang Technol Univ, Sch Mat Sci & Engn, 50 Nanyang Ave, Singapore 639798, Singapore 5.Univ Chinese Acad Sci, 19 Yuquan Rd, Beijing 100049, Peoples R China 6.Chinese Acad Sci, Ctr Excellence Deep Earth Sci, 511 Kehua St, Guangzhou 510640, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yan, Yao,Cao, Xun,Li, Jun,et al. Crystallinity and dissolution-recrystallization mechanism controlled As(V) retention by calcium phosphate[J]. JOURNAL OF HAZARDOUS MATERIALS,2025,481:14. |
| APA | Yan, Yao.,Cao, Xun.,Li, Jun.,Zhang, Hanxiao.,Yang, Yongqiang.,...&Wu, Shijun.(2025).Crystallinity and dissolution-recrystallization mechanism controlled As(V) retention by calcium phosphate.JOURNAL OF HAZARDOUS MATERIALS,481,14. |
| MLA | Yan, Yao,et al."Crystallinity and dissolution-recrystallization mechanism controlled As(V) retention by calcium phosphate".JOURNAL OF HAZARDOUS MATERIALS 481(2025):14. |
入库方式： OAI收割
来源：广州地球化学研究所
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