Magnetic Flocculant for High Efficiency Harvesting of Microalgal Cells
文献类型：期刊论文
| 作者 | Wang, Shi-Kai1,2,3; Wang, Feng1,2; Hu, Yi-Ru1,2,3; Stiles, Amanda R.4; Guo, Chen1,2; Liu, Chun-Zhao1,2 |
| 刊名 | ACS APPLIED MATERIALS & INTERFACES
 |
| 出版日期 | 2014-01-08 |
| 卷号 | 6期号:1页码:109-115 |
| 关键词 | microalgae harvesting cationic polyacrylamide magnetic flocculant Botryococcus braunii Chlorella ellipsoidea |
| ISSN号 | 1944-8244 |
| 其他题名 | ACS Appl. Mater. Interfaces |
| 中文摘要 | Magnetic flocculant was synthesized for the highly efficient recovery of microalgal cells. The highest flocculation was achieved using the magnetic flocculant synthesized with iron oxide and 0.1 mg/mL cationic polyacrylamide (CPAM). This resulted in a recovery efficiency of more than 95% within 10 min using a dosage of 25 mg/L for Botryococcus braunii and 120 mg/L for Chlorella ellipsoidea. For both species, the adsorption isotherm data fit the Freundlich model better than the Langmuir model, indicating that the adsorption process was a heterogeneous multilayer. The maximum adsorption capacity was 114.8 and 21.4 mg dry cells/mg-particles at pH 7 for B. braunii and C. ellipsoidea, respectively. The primary flocculation mechanism was bridging, which was assisted by the electrostatic interactions between the microalgal cells and the magnetic flocculant under acidic conditions. These results provide new opportunities and challenges for understanding and improving the harvesting of microalgae using magnetic separation. |
| 英文摘要 | Magnetic flocculant was synthesized for the highly efficient recovery of microalgal cells. The highest flocculation was achieved using the magnetic flocculant synthesized with iron oxide and 0.1 mg/mL cationic polyacrylamide (CPAM). This resulted in a recovery efficiency of more than 95% within 10 min using a dosage of 25 mg/L for Botryococcus braunii and 120 mg/L for Chlorella ellipsoidea. For both species, the adsorption isotherm data fit the Freundlich model better than the Langmuir model, indicating that the adsorption process was a heterogeneous multilayer. The maximum adsorption capacity was 114.8 and 21.4 mg dry cells/mg-particles at pH 7 for B. braunii and C. ellipsoidea, respectively. The primary flocculation mechanism was bridging, which was assisted by the electrostatic interactions between the microalgal cells and the magnetic flocculant under acidic conditions. These results provide new opportunities and challenges for understanding and improving the harvesting of microalgae using magnetic separation. |
| WOS标题词 | Science & Technology ; Technology |
| 类目[WOS] | Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary |
| 研究领域[WOS] | Science & Technology - Other Topics ; Materials Science |
| 关键词[WOS] | ORGANIC POLYELECTROLYTES ; WATER-TREATMENT ; HIGH-GRADIENT ; FRESH-WATER ; SEPARATION ; ADSORPTION ; REMOVAL ; BIOMASS ; POLYACRYLAMIDES ; PERFORMANCE |
| 收录类别 | SCI |
| 原文出处 | |
| 语种 | 英语 |
| WOS记录号 | WOS:000329586300017 |
| 公开日期 | 2014-05-06 |
| 版本 | 出版稿 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/8135]  |
| 专题 | 过程工程研究所_研究所（批量导入） |
| 作者单位 | 1.Chinese Acad Sci, Inst Proc Engn, Natl Key Lab Biochem Engn, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Univ Calif Berkeley, Dept Plant & Microbial Biol, Berkeley, CA 94720 USA |
| 推荐引用方式 GB/T 7714 | Wang, Shi-Kai,Wang, Feng,Hu, Yi-Ru,et al. Magnetic Flocculant for High Efficiency Harvesting of Microalgal Cells[J]. ACS APPLIED MATERIALS & INTERFACES,2014,6(1):109-115. |
| APA | Wang, Shi-Kai,Wang, Feng,Hu, Yi-Ru,Stiles, Amanda R.,Guo, Chen,&Liu, Chun-Zhao.(2014).Magnetic Flocculant for High Efficiency Harvesting of Microalgal Cells.ACS APPLIED MATERIALS & INTERFACES,6(1),109-115. |
| MLA | Wang, Shi-Kai,et al."Magnetic Flocculant for High Efficiency Harvesting of Microalgal Cells".ACS APPLIED MATERIALS & INTERFACES 6.1(2014):109-115. |
入库方式： OAI收割
来源：过程工程研究所
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