Struvite crystallization by using active serpentine: An innovative application for the economical and efficient recovery of phosphorus from black water
文献类型：期刊论文
| 作者 | Li, Xuewei; Zhao, Xu; Zhang, Juanjuan; Hao, Jingwei ; Zhang, Qiwu
|
| 刊名 | WATER RESEARCH
 |
| 出版日期 | 2022-08-01 |
| 卷号 | 221期号:0页码:118678 |
| ISSN号 | 0043-1354 |
| 关键词 | WASTE-WATER MAGNESIUM SOURCE REMOVAL ADSORPTION PHOSPHATE AMMONIUM NITROGEN RESIDUE ENERGY DYES |
| 英文摘要 | Recovery of phosphorus from wastewater through struvite crystallization is one of the most attractive methods. However, the cost of chemical consumption makes this technology is unattractive to some extent. In this work, highly active serpentine was prepared by one-step mechanical activation and then used to recover phosphate as struvite from the black water containing 132.8 mg/L phosphorus and 3144 mg/L ammonia nitrogen. The results indicated that the prepared active serpentine can release magnesium ions and hydroxide ions simultaneously into an aqueous solution and is an ideal raw material for struvite crystallization. The factors for phosphorus recovery in this process mainly include mechanical activation intensity, serpentine dosage, and contact time. For the actual black water, a high recovery rate of phosphorus (>98%) is achieved by using active serpentine as the magnesium and alkali source for struvite precipitation. The recovery product was identified as struvite with a median particle size of 32.96 mu m. It was confirmed that the mechanical activation damaged the crystal structure of the raw serpentine, improving the activity of Mg2+ and OH. The undissolved Si-containing particles act as crystal seeds, accelerating the struvite crystallization process. Furthermore, a pilot-scale test was conducted with a rural public toilet in Xiong'an New District, Hebei Province. The results showed that an acceptable phosphorus recovery (98%) could be achieved using active serpentine. Additionally, it was demonstrated that the serpentine process to recover phosphate as struvite reduced the cost by 54.4% in compared with an ordinary chemical process. The active serpentine is a promising dual source of magnesium and alkali for the phosphorus recovery by the struvite method. It has a potential prospect for the large-scale application in phosphorus recovery and struvite fertilizer production. |
| 源URL | [https://ir.rcees.ac.cn/handle/311016/47731]  |
| 专题 | 生态环境研究中心_环境水质学国家重点实验室 |
| 通讯作者 | Zhao, Xu |
| 作者单位 | 1.Wuhan Univ Technol, Sch Resources & Environm Engn, Luoshi Rd 122, Wuhan 430070, Peoples R China 2.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Beijing 100085, Peoples R China 3.Chinese Acad Sci, Ganjiang Innovat Acad, Ganzhou 341119, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Xuewei,Zhao, Xu,Zhang, Juanjuan,et al. Struvite crystallization by using active serpentine: An innovative application for the economical and efficient recovery of phosphorus from black water[J]. WATER RESEARCH,2022,221(0):118678. |
| APA | Li, Xuewei,Zhao, Xu,Zhang, Juanjuan,Hao, Jingwei,&Zhang, Qiwu.(2022).Struvite crystallization by using active serpentine: An innovative application for the economical and efficient recovery of phosphorus from black water.WATER RESEARCH,221(0),118678. |
| MLA | Li, Xuewei,et al."Struvite crystallization by using active serpentine: An innovative application for the economical and efficient recovery of phosphorus from black water".WATER RESEARCH 221.0(2022):118678. |
入库方式： OAI收割
来源：生态环境研究中心
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