| Optimized pre-treatment of high strength food waste digestate by high content aluminum-nanocluster based magnetic coagulation | |
Ritigala, Tharindu; Demissie, Hailu; Chen, Yanlin; Zheng, Jiaxi ; Zheng, Libing; Zhu, Jinxing; Fan, Hua; Li, Jiao; Wang, Dongsheng; Weragoda, Sujithra K.; Weerasooriya, Rohan; Wei, Yuansong
| |
| 2021-06 | |
| Source Publication | JOURNAL OF ENVIRONMENTAL SCIENCES
 |
| ISSN | 1001-0742 |
| Volume | 104Pages:430-443 |
| Abstract | Coagulation-based pre-treatment efficiency of high strength digestate of food waste (HS-DFW) anaerobic digestion is negated by organic ligand-catalyzed decomposition of coagulants. In this study, an efficient HSDFW pre-treatment method, magnetic seeds (MS) coagulation, was employed by using highly stable Keggin Al-30 nanocluster (PAC(30)), MS and polyacrylamide (PAM), and its operation was optimized by evaluating the performance of removing turbidity, total suspended solids (TSS), chemical oxygen demand (COD), and total phosphorous (TP) phosphate. Results showed that at the optimum dosage of 4.82 g/L, PAC(30) demonstrated excellent removals as high as 98.93% +/- 0.1% of turbidity, 98.04% +/- 0.1% of TSS, 58.28% +/- 0.3% of total COD, 99.98% +/- 0.01% of TP and 99.50% +/- 0.01% of dissolved phosphate, respectively. Apparent molecular weight (AMW) and three-dimensional excitation-emission matrix (3D-EEM) fluorescence spectroscopy analyses demonstrated more efficient removal of dissolved organic matter (DOM), particularly non-biodegradable and hydrophobic components by PAC(30) than commercial coagulant. The sedimentation was much improved from 40 min by coagulation/flocculation to about 5 min settling by MS coagulation. The PAC(30) based magnetic coagulation (MC) presents theoretical guidance on a cost-effective and much less footprint pre-treatment alternative for high strength wastewater. (C) 2021 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V. |
| Department | 水污染控制实验室 |
| Keyword | Magnetic coagulation Keggin nanocluster Pre-treatment Removal mechanism Cost analysis |
| WOS Research Area | Environmental Sciences |
| Document Type | 期刊论文 |
| Identifier | https://ir.rcees.ac.cn/handle/311016/46059 |
| Collection | 水污染控制实验室 |
| Affiliation | 1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Joint Lab Environm Simulat & Pollut Con, Beijing 100085, Peoples R China 2.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Lab Water Pollut Control Technol, Beijing 100085, Peoples R China 3.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Environm Aquat Chem, Beijing 100085, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 5.Beijing Environm Engn Technol Co Ltd, Beijing 100101, Peoples R China 6.Natl Water Supply & Drainage Board, Katugastota 20800, Sri Lanka |
| Recommended Citation GB/T 7714 | Ritigala, Tharindu,Demissie, Hailu,Chen, Yanlin,et al. Optimized pre-treatment of high strength food waste digestate by high content aluminum-nanocluster based magnetic coagulation[J]. JOURNAL OF ENVIRONMENTAL SCIENCES,2021,104:430-443. |
| APA | Ritigala, Tharindu.,Demissie, Hailu.,Chen, Yanlin.,Zheng, Jiaxi.,Zheng, Libing.,...&Wei, Yuansong.(2021).Optimized pre-treatment of high strength food waste digestate by high content aluminum-nanocluster based magnetic coagulation.JOURNAL OF ENVIRONMENTAL SCIENCES,104,430-443. |
| MLA | Ritigala, Tharindu,et al."Optimized pre-treatment of high strength food waste digestate by high content aluminum-nanocluster based magnetic coagulation".JOURNAL OF ENVIRONMENTAL SCIENCES 104(2021):430-443. |
| Files in This Item: | Download All | |||||
| File Name/Size | DocType | Version | Access | License | ||
| Optimized pre-treatm（2405KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment