Effective harvesting of the microalgae Chlorella vulgaris via flocculation-flotation with bioflocculant
- Resource Type
- Authors
- Wei Zheng; Jingyan Zhang; Zongze Shao; Yao Chen; Hong Zhu; Zhangran Chen; Xueqian Lei; Tianling Zheng; Yi Li
- Source
- Bioresource technology. 198
- Subject
- Flocculation
Environmental Engineering
biology
Renewable Energy, Sustainability and the Environment
Chemistry
Cobetia marina
Chlorella vulgaris
Temperature
Bioengineering
General Medicine
Hydrogen-Ion Concentration
biology.organism_classification
Pulp and paper industry
Aquatic organisms
Biofuel
Bioenergy
Botany
Microalgae
Sugar
Waste Management and Disposal
- Language
- ISSN
- 1873-2976
In this study, bioflocculant from Cobetia marina L03 could be used for effective harvesting of the microalgae Chlorella vulgaris via flocculation-flotation. A flotation efficiency of 92.7% was observed when 20 mg L(-1) bioflocculant was tested for flocculating the microalgal cells with 5mM CaCl2. The bioflocculant was stable at wide ranges of pH and temperature, which is advantageous for its application under various conditions. Chemical analysis of the bioflocculant indicated that it is composed of 31.6% total sugar and 0.2% protein (w/w). This bioflocculant has potential for the high-efficiency harvesting of microalgae and may be useful in reducing one of the barriers to microalgal biofuel production.