Phosphorus adsorption from aqueous solutions using different types of cement: kinetics, isotherms, and mechanisms
文献类型：期刊论文
| 作者 | Yu, Xingyu1,2,3; Yang, Yongqiang2,3 ; Zhang, Hanxiao1,2,3; Wu, Shijun2,3; Chen, Fanrong2,3; Zhu, Runliang2,3
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| 刊名 | RSC ADVANCES
 |
| 出版日期 | 2024-05-10 |
| 卷号 | 14期号:22页码:15637-15646 |
| DOI | 10.1039/d4ra01929f |
| 英文摘要 | Exploring low-cost and high-performance phosphorus (P) adsorbents is key to controlling P contamination in water. This study evaluated the P adsorption performance of three types of cement: Ordinary Portland cement (OPC), Portland slag cement (PSC), and Portland pozzolana cement (PPC). Furthermore, SEM-EDS, XRD, XPS, and FTIR were employed to reveal the adsorption mechanism. The results showed that the pseudo-second-order model exhibited higher regression coefficients than the pseudo-first-order model, indicating that chemisorption dominated the adsorption process. The Langmuir equation fitted the P adsorption data well, with maximum P adsorption capacities of 245.8, 226.1, and 210.0 mg g-1 for OPC, PSC, and PPC at 25 degrees C, respectively. P adsorption capacities decreased gradually with increasing initial pH and reached their maximum values at pH 3. The anions of F-, CO32-, and SO42- negatively affected P adsorption due to the competitive adsorption with Ca2+. The results of XPS, XRD, and FTIR confirmed that Ca-P precipitates (i.e., hydroxyapatite) were the main removal mechanism. A real domestic sewage experiment showed that 0.6 g L-1 OPC effectively reduced the P concentration from 2.4 to below 0.2 mg L-1, with a dosage cost of 0.034 $ per ton. This study indicated that cement, as a low-cost and efficient P adsorbent, has great potential for application in removing P from acidic and neutral wastewater. This study reveals the potential of cement as a cost-effective and high-capacity adsorbent for removing phosphorus from acidic and neutral wastewaters. |
| WOS研究方向 | Chemistry |
| 语种 | 英语 |
| WOS记录号 | WOS:001221140800001 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/77015]  |
| 专题 | 中国科学院矿物学与成矿学重点实验室 |
| 通讯作者 | Yang, Yongqiang |
| 作者单位 | 1.Univ Chinese Acad Sci, 19 Yuquan Rd, Beijing 100049, Peoples R China 2.CAS Ctr Excellence Deep Earth Sci, 511 Kehua St, Guangzhou 510640, Peoples R China 3.Chinese Acad Sci, Guangzhou Inst Geochem, Guangdong Prov Key Lab Mineral Phys & Mat, CAS Key Lab Mineral & Metallogeny, 511 Kehua St, Guangzhou 510640, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yu, Xingyu,Yang, Yongqiang,Zhang, Hanxiao,et al. Phosphorus adsorption from aqueous solutions using different types of cement: kinetics, isotherms, and mechanisms[J]. RSC ADVANCES,2024,14(22):15637-15646. |
| APA | Yu, Xingyu,Yang, Yongqiang,Zhang, Hanxiao,Wu, Shijun,Chen, Fanrong,&Zhu, Runliang.(2024).Phosphorus adsorption from aqueous solutions using different types of cement: kinetics, isotherms, and mechanisms.RSC ADVANCES,14(22),15637-15646. |
| MLA | Yu, Xingyu,et al."Phosphorus adsorption from aqueous solutions using different types of cement: kinetics, isotherms, and mechanisms".RSC ADVANCES 14.22(2024):15637-15646. |
入库方式： OAI收割
来源：广州地球化学研究所
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