|
| Preparation of Dual-valent Polysilicate Aluminum Ferric Sulfate by Pressure Acid Leaching and Its Removal of Cyanobacteria |
| Received:January 23, 2020 Revised:February 26, 2020 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/issn.1672-9242.2020.07.008 |
| KeyWord:solidresidue of K-feldspar microcystis aeruginosa pressure acid leaching coupling coagulation |
| Author | Institution |
| LIANG Yu-jia |
Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing , China |
| Eng da |
Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing , China |
| LYU Ying |
Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing , China |
| HAN Bo-lei |
Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing , China |
| XIE Hui-fang |
Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing , China |
| QU Hong-xia |
School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing , China |
| CHEN Shou-wen |
Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing , China |
|
| Hits: |
| Download times: |
| Abstract: |
| The paper aims to develop a multifunctional dual-valent flocculant from the solid residues of K-feldspar, study its characteristics in removal of microcystis aeruginosa, to achieve comprehensive utilization of K-feldspar and provide a new flocculant for water treatment. The pressure acid leaching (PAL) process was used to extract aluminum and iron from solid residues and the dual-valent PSAFS was prepared by introducing Fe (II). Microcystis aeruginosa, the model of cyanobacteria, was used to determine the algal removal characteristics and coupling effects with H2O2. Nearly 100% aluminum and 85.6% iron were extracted at H2SO4 concentration 2.8 mol/kg, solid-liquid ratio 1:3, temperature 105 ℃ and PAL time 2 h. The dual-valent PSAFS showed excellent ability to remove microcystis aeruginosa and the introduction of Fe (II) can broaden the pH range of flocculant application. This new coagulant could deactivate more microcystis cell when H2O2 was present. The dual-valent PSAFS can be prepared from solid residues of K-feldspar after potassium extractions by PAL process in a green and economical way. It is a promising multifunctional flocculant. |
| Close |
|
|
|