Enhanced chitosan flocculation for microalgae harvesting using electrolysis
文献类型：期刊论文
| 作者 | Zhu, Lin; Pan, Gang; Xu, Hui ; Kong, Lingwei; Guo, Weijie; Yu, Jianghua; Mortimer, Robert J. G.; Shi, Wenqing
|
| 刊名 | ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS
 |
| 出版日期 | 2021-05 |
| 卷号 | 55页码:- |
| 关键词 | Chitosan Microalgae Electrolysis Charge neutralization |
| ISSN号 | 2211-9264 |
| 英文摘要 | Harvesting microalgae from water and wastewater streams is important for both environmental remediation and re-cycling of both algal material and associated nutrients. Chitosan is widely used as an environmentally friendly flocculant in this process. Charge neutralization is a key operating mechanism for chitosan flocculation in microalgae harvesting. Alkaline conditions have been conventionally used to modify chitosan to create an increase in charge neutralization. However, it is often difficult to operate the chemical processes needed for this method, which also pose environmental risks. In this study, a simple and environmentally safe method to increase chitosan charge neutralization using electrolysis was proposed and tested in the harvest of microalgae. The results demonstrate that the electrolysis produced a charging effect on the chitosan and exhibited a significant positive relationship with current intensity (r2 = 0.91, P < 0.05). When the electrolysis was operated at 0.2, 0.4, and 0.6 A, the charge neutralization of chitosan increased by 2.05, 4.99, and 10.86 mV/mg, respectively. As the charge neutralization increased, chitosan flocculation yielded a higher microalgae harvesting efficiency at a lower chitosan dosage. One of the possible mechanisms for the increased charge neutralization ability is the deacetylation of the acetyl groups caused by electrolysis. This idea needs further study that includes identifying a chitosan structure change. This study proposed a novel strategy for modifying chitosan and its derivatives for enhancing flocculation in microalgae-based engineering. |
| WOS研究方向 | Biotechnology & Applied Microbiology |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/45935]  |
| 专题 | 生态环境研究中心_环境水质学国家重点实验室 |
| 作者单位 | 1.Nanjing Univ Informat Sci & Technol, Jiangsu Collaborat Innovat Ctr Atmospher Environm, Sch Environm Sci & Engn, Jiangsu Key Lab Atmospher Environm Monitoring & P, Nanjing 210044, Peoples R China 2.Nanjing Xianglai Acad Ecoenvironm Sci & Technol, Ctr Ecoenvironm R&D, Nanjing 210046, Pe 3.Changjiang River Sci Res Inst, Basin Water Environm Res Dept, Wuhan 430010, Peoples R China 4.Westlake Univ, Sch Engn, Hangzhou 310024, Peoples R China 5.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Beijing 100085, Peoples R China 6.Nottingham Trent Univ, Sch Anim Rural & Environm Sci, Brackenhurst Campus, Southwell NG25 0QF, England |
| 推荐引用方式 GB/T 7714 | Zhu, Lin,Pan, Gang,Xu, Hui,et al. Enhanced chitosan flocculation for microalgae harvesting using electrolysis[J]. ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS,2021,55:-. |
| APA | Zhu, Lin.,Pan, Gang.,Xu, Hui.,Kong, Lingwei.,Guo, Weijie.,...&Shi, Wenqing.(2021).Enhanced chitosan flocculation for microalgae harvesting using electrolysis.ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS,55,-. |
| MLA | Zhu, Lin,et al."Enhanced chitosan flocculation for microalgae harvesting using electrolysis".ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS 55(2021):-. |
入库方式： OAI收割
来源：生态环境研究中心
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。