Knowledge Management System Of Institute of process engineering,CAS
| Eco-friendly recycling of silicon - rich lye: Synthesis of hierarchically structured calcium silicate hydrate and its application for phosphorus removal | |
| Qi, Fang1; Zhu, Ganyu2; Zhang, Yimin1; Li, Huiquan2,3; Li, Shaopeng2; Yang, Chennian2; Zhang, Jianbo2 | |
| 2022-11-20 | |
| Source Publication | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| ISSN | 0048-9697 |
| Volume | 848Pages:13 |
| Abstract | Silicon - rich lye (SRL), a byproduct generated from pre-treatment of coal - based solid waste (CSW), was considered as a preponderant silicon source to prepare hierarchically nanostructured calcium silicate hydrate (C-S-H). Through the novel mild - causticization synthesis strategy, C-S-H was prepared under optimal caustic process conditions at time of 3 h, temperature of 80 degrees C., Ca/Si of 1.25:1, and active CeO to obtain a conversion rate of Si up to 97.33 % during the high - value utilization of SRL. The synthesized C-S-H possesses abundant mesoporous structure and massive exchangeable active sites, whose formation is advanced through an appropriate elevation regulation of caustic temperature and time. The silicate chain depolymerization occurs to C-S-H prepared in the highly alkaline system at higher caustic temperature, longer caustic period, especially at existence of massive sodium ions, but it presents higher polymerization degree at more aluminum co-existing. The adsorption capacity up to 119.27 mg/g for C-S-H presents a valid removal performance toward phosphorus in the wastewater than massive present reports. The removal mechanism of phosphorus can be identified as the surface chemisorption and formation of calcium phosphate co-precipitation. This study can provide considerable and potential guidance to the coordinated disposal between industrial solid wastes and wastewater purification. |
| Keyword | Calcium silicate hydrate Silicon-rich lye Mild-caustidzation Phosphotus Removal |
| DOI | 10.1016/j.scitotenv.2022.157431 |
| Language | 英语 |
| WOS Keyword | C-S-H ; FLY-ASH ; MECHANISM ; DESILICATION ; RECOVERY ; IMMOBILIZATION ; ACTIVATION ; EXTRACTION |
| Funding Project | National Natural Science Foundation of China[U1810205] ; National Natural Science Foundation of China[22078344] ; National Natural Science Foundation of China[52174390] ; Youth Innovation Promotion Association CAS[2018066] |
| WOS Research Area | Environmental Sciences & Ecology |
| WOS Subject | Environmental Sciences |
| Funding Organization | National Natural Science Foundation of China ; Youth Innovation Promotion Association CAS |
| WOS ID | WOS:000891441600012 |
| Publisher | ELSEVIER |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.ipe.ac.cn/handle/122111/56129 |
| Collection | 中国科学院过程工程研究所 |
| Corresponding Author | Zhang, Yimin; Li, Huiquan |
| Affiliation | 1.Wuhan Univ Sci & Technol, Coll Resources & Environm Engn, State Environm Protect Key Lab Mineral Met Resourc, Wuhan 430081, Hubei, Peoples R China 2.Chinese Acad Sci, Inst Proc Engn, Natl Engn Res Ctr Green Recycling Strateg Met Reso, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China 3.Univ Chinese Acad Sci, Sch Chem Engn, Beijing 100049, Peoples R China |
| Recommended Citation GB/T 7714 | Qi, Fang,Zhu, Ganyu,Zhang, Yimin,et al. Eco-friendly recycling of silicon - rich lye: Synthesis of hierarchically structured calcium silicate hydrate and its application for phosphorus removal[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2022,848:13. |
| APA | Qi, Fang.,Zhu, Ganyu.,Zhang, Yimin.,Li, Huiquan.,Li, Shaopeng.,...&Zhang, Jianbo.(2022).Eco-friendly recycling of silicon - rich lye: Synthesis of hierarchically structured calcium silicate hydrate and its application for phosphorus removal.SCIENCE OF THE TOTAL ENVIRONMENT,848,13. |
| MLA | Qi, Fang,et al."Eco-friendly recycling of silicon - rich lye: Synthesis of hierarchically structured calcium silicate hydrate and its application for phosphorus removal".SCIENCE OF THE TOTAL ENVIRONMENT 848(2022):13. |
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