abstract

• The superficial gas velocity (Ug) values of 1.0, 1.5 and 2.0cms-1 showed a diesel consumption of 59.70, 58.20 and 65.20%25, respectively. The productivity of the airlift bioreactors (ALBs) was 0.030, 0.026 and 0.034gL-1d-1, respectively. During 10 days of operation, the emulsification index (E 24%25) values for Ug 1.0, 2.0 and 2.0cms-1 were 15.79, 15.07 and 12.85%25, respectively. Likewise, an increase in the degradation and suspended solids was observed when increasing the Ug from 1.0 to 2.0cms-1 of the ALBs, whereas a decrease in emulsification index E 24%25 was observed for an Ug of 2.0cms-1. According to the results, the Ug of 2.0cms-1 was the most effective for increasing the degradation of diesel and growth of the consortium among the Ug evaluated. Furthermore, the reduction of E 24%25 in this Ug suggests that the consortium uses a mixed form of hydrocarbon consumption, both by direct contact and in emulsified form.

authors

• Espinosa Reyes Guillermo
• Lizardi Jiménez Manuel Alejandro
• Rodríguez Torres Israel
• Sandoval-Herazo E.J.

publication date

• 2024-01-01

published in

• International Journal of Chemical Reactor Engineering  Journal

keywords

• airlift bioreactors; bioremediation; pollution; polycyclic aromatic hydrocarbon; water bodies Bioconversion; Biological water treatment; Bioreactors; Biotechnology; Diesel engines; Emulsification; Polycyclic aromatic hydrocarbons; Water pollution; % reductions; Air-lift bioreactors; Diesel consumption; Direct contact; Emulsification index; Hydrocarbon consumption; Superficial gas velocities; Suspended solids; Waterbodies; Bioremediation

Digital Object Identifier (DOI)

• 10.1515/ijcre-2024-0009

PubMed ID

start page

• 643

end page

• 650

volume

• 22

issue

• 6