Which of these is not a strategy for the application of biosurfactants in oil recovery?
(a) Injection of biosurfactants into reservoir through well that produce microorganisms and multiply their growth in-situ
(b) Production of biosurfactants ex-situ while the same is injected into the reservoir
(c) Injecting selected nutrients into the reservoir
(d) Injecting microorganisms along with nutrients producing biomass
I had been asked this question in quiz.
The question is from Microbial Extraction of Petroleum topic in division Bioleaching and Biomining for Recovery of Resources of Environmental Biotechnology