Optimization of Alkaline Flocculation for Harvesting of Scenedesmus quadricauda #507 and Chaetoceros muelleri #862

Shuhao Huo, Zhongming Wang, Shunni Zhu, Fengjie Cui, Bin Zou, Wenhua You, Zhenhong Yuan and Renjie Dong
Additional contact information
Shuhao Huo: School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu, China
Zhongming Wang: Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, Guangdong, China
Shunni Zhu: Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, Guangdong, China
Fengjie Cui: School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu, China
Bin Zou: School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu, China
Wenhua You: School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu, China
Zhenhong Yuan: Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, Guangdong, China
Renjie Dong: College of Engineering, China Agricultural University, Beijing 100083, China

Energies, 2014, vol. 7, issue 9, 1-10

Abstract: A response surface methodology (RSM) was used to evaluate the effects of pH and microalgal biomass concentration (BC) on alkaline flocculating activity for harvesting one freshwater green algae Scenedesmus quadricauda #507 and one marine diatom Chaetoceros muelleri #862. The pH value and BC were in range of 9.0–12.0 and 0.20–2.30 g/L, respectively. Very high regression coefficient between the variables and the response indicates excellent evaluation of experimental data by second-order regressions. Optimum conditions for flocculating activity were estimated as follows: (i) pH 11.6, BC 0.54 g/L for strain #507 and (ii) pH 11.5, BC 0.42 g/L for strain #862. The maximum flocculating activity was around 94.7% and 100%, respectively. Furthermore, the addition of synthetic ocean water (SOW) to the freshwater #507 culture can increase the flocculating activity from 82.13%–88.79% in low algae concentration (0.52 g/L) and 82.92%–95.60% in high concentration (2.66 g/L).

Keywords: microalgae harvesting; flocculation; alkaline; response surface methodology; synthetic ocean water (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2014
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/1996-1073/7/9/6186/pdf (application/pdf)
https://www.mdpi.com/1996-1073/7/9/6186/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:7:y:2014:i:9:p:6186-6195:d:40569

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().