A review on cleaner production of biofuel feedstock from integrated CO2 sequestration and wastewater treatment system

• Published in: Journal of cleaner production 2019-02, Vol.210, p.445-458
• Main Authors: SundarRajan, PanneerSelvam, Gopinath, Kannappan Panchamoorthy, Greetham, Darren, Antonysamy, Adithya Joseph
• Format: Article
• Language: English
• Subjects: Biomass production; CO2 fixation; Microalgae cultivation; Nutrient removal; Photobioreactor; Wastewater treatment
• ISSN: 0959-6526; 1879-1786
• DOI: 10.1016/j.jclepro.2018.11.010

This review shows the potential of algae in combating both air and water pollution and the production of biofuel feedstock in a much cleaner manner. Various research articles published in leading journals have been studied thoroughly to give a critical mentioning of various methods of cultivation in different reactors. It provides a comprehensive narration about a) selection of suitable algal species b) selection of a suitable mode for growing c) selection of suitable reactor type and d) carbon bio-fixation. This review found that hybrid airlift photobioreactors are highly efficient because it exploits the benefits of two different types of reactors to overcome the drawbacks. It also provides salient features in the selection of suitable microalgal species. The mixotrophic culture mode is found to be best for the integrated approach. The models used to calculate carbon dioxide bio-fixation rate would be useful for engineers and researchers to quantify the carbon removal. •Emphasized the importance of selecting algal species for wastewater treatment.•Biomass productivity is restricted by the cultivation mode and techniques.•Microalgae grown on wastewater utilize waste CO2 for photosynthesis.•Salient features of different cultivation techniques are discussed.•There was synergistic effect while cultivating microalgae in a hybrid photobioreactor.