Extractive production of microbial oil using hydrophobic adsorbents: A comparative study

Abstract

Increased demand for vegetable oils has accelerated interest in producing its renewable alternate through microbial route. However, this process still awaits technological advancements to be executed as a commercially feasible operation. The oil productivity in this bioprocess is significantly challenged by the conventional recovery techniques used. To address this problem, we propose an extractive production system using hydrophobic adsorbents as oil capturing agents for simultaneous in situ oil recovery. Three polystyrene and two organo-silica-based capturing agents were studied on a "cell mimic system" to attest to an increase in the rate of oil recovery. High sorption capacity demonstrated by SEPABEADS, stalled the oil saturation in the aqueous medium and thereby, enhances the extracellular efflux of the produced oil. The efflux of oil, K E Y W O R D Sextractive production, hydrophobic adsorbent, in situ product removal, microbial oil 1 This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

Biosorption of Escherichia coli Using ZnO-Trimethyl Chitosan Nanocomposite Hydrogel Formed by the Green Synthesis Route

“…This model is also built upon the assumptions based on the Langmuir isotherm model [62]. The predominance of the surface homogeneity and monolayer adsorption nature of TM@ZnO/TMC NC hydrogel toward E. coli were also complemented by the higher q max (1.83 × 10 8 mg g −1 ) value determined [63]. Overall, the surface homogeneity and monolayer adsorption reflect well the entire adsorption mechanism, displaying the highest correlation for Langmuir's and the Jovanovic and R-P isotherm models.…”