A simplistic approach of algal biofuels production from wastewater using a Hybrid Anaerobic Baffled Reactor and Photobioreactor (HABR-PBR) System

Abstract

The current technologies of algal biofuels production and wastewater treatment (e.g., aerobic) process are still in question, due to the significant amount of fresh water and nutrients requirements for microalgae cultivation, and negative energy balance in both processes, especially when considered in the context of developing counties around the world. In this research, a simplistic sustainable approach of algal biofuels production from wastewater was proposed using a Hybrid Anaerobic Baffled Reactor (HABR) and Photobioreactor (PBR) system. The study suggests that the HABR was capable of removing most of the organic and solid (>90% COD and TSS removal) from wastewater, and produced a healthy feedstock (high N: P = 3:1) for microalgae cultivation in PBRs for biofuels production. A co-culture of Chlorella vulgaris, Chlorella sorokiniana, and Scenedesmus simris002 showed high lipid content up to 44.1%; and the dominant FAMEs composition (C16-C18) of 87.9% in produced biofuels. Perhaps, this proposed low-cost technological approach (e.g., HABR-PBR system) would connect the currently broken link of sustainable bioenergy generation and wastewater treatment pathway for developing countries.

Phycoremediation of phenol‐polluted petro‐industrial effluents and its techno‐economic values as a win‐win process for a green environment, sustainable energy and bioproducts

“…The reported algal biomass yield from wastewater processes can reach 0·64–14·80 g l −1 day −1 (Khalekuzzaman et al . 2019). The hydrothermal liquefaction of microalgal biomass into bio‐oil is another new route for algal fuels (Andersson et al .…”

Biofuel from Microalgae: Sustainable Pathways

“…A newly developed microgravity-capable membrane raceway photobioreactor for Chlorella vulgaris SAG 211-12 was introduced by Helisch et al [16] for life support in space. On the other hand, Khalekuzzaman et al [17] developed a hybrid anaerobic baffled reactor and photobioreactor for a simplified method of algal biofuel production. It is important for algal biofuel production to be simple and cost-effective to make it competitive with commercially available biofuels.…”

“…On the other hand, Khalekuzzaman et al [17] developed a hybrid anaerobic baffled reactor and photobioreactor for a simplified method of algal biofuel production. It is important for algal biofuel production to be simple and cost-effective to make it competitive with commercially available biofuels.…”

Hybrid Anaerobic Baffled Reactor for Removal of Bod and Phosphate Concentration in Domestic Wastewater

“…Figure 1 Differences in HABR and ABR reactor unit designs (Aqaneghad et al, 2017) HABR technology also uses a reactor that has several separators, but the reactor used in this technology is a combination of a suspended reactor and an attached reactor (Aqaneghad et al Aqaneghad et al, (2017), Khalekuzzaman et al, (2018) and Khalekuzzaman et al, (2019). Research conducted by Aqaneghad et al, (2017) concluded that the way HABR works is the same as ABR.…”