Parameter Screening Study for Optimizing the Static Properties of Nanoparticle-Stabilized CO₂ Foam Based on Orthogonal Experimental Design

Abstract

Nanoparticle (NP)-stabilized foam technology has found potential applications in CO2 enhanced oil recovery (EOR) and greenhouse gas geological storage practices and accordingly attracts lots of research interest. To screen the optimal formula for the satisfactory foam performance, orthogonal experimental design (OED) is used in this paper for the complex multifactor multilevel system consisting of five influential factors of NP size, surfactant concentration, NP concentration, temperature, and salinity at four different levels in the range of 7–40 nm, 0–0.15 wt %, 0–0.2 wt %, 25–55 °C, and 0–3 wt %, respectively. Based on the orthogonal principle, only 16 experiments were performed to analyze the effect of various factors on the foam height and foam half-life properties. In addition to showing that the influence of the single factor on foam static properties, OED results reveal that the surfactant concentration and temperature are dominating factors on foamability and stability of the NP-stabilized CO2 foam, respectively. Finally, NP-stabilized CO2 foam with satisfactory static characteristics is obtained with the OED recommended composition of a 0.15 wt % surfactant concentration, 0.1 wt % NP concentration, and NP size of 7 nm in 1 wt % saline solution at temperatures of 30 and 50 °C, validating that the OED method could substantially facilitate the laboratory screening and optimization process for a successful NP-stabilized CO2 foam application.

Enhancing extracellular production of lipoxygenase in Escherichia coli by signal peptides and autolysis system

“…Currently, the orthogonal experimental method has been widely applied to optimize fermentation technical conditions in industrial fields [ 30 – 32 ]. Based on the results of our cell lysis experiments in autolytic E. coli , an orthogonal experiment of L 9 (4 3 ) was designed for the following three influencing factors: the induction time for LOX, the concentration of the inducer (arabinose), and induction temperature for the lysis protein.…”

Influence of indium tin oxide residues on the electrical performance of hydrogenated amorphous silicon thin-film transistors in the backplane of active-matrix displays

“…Table S1 (ESI†) lists nine experimental parameter combinations using the software “Orthogonality Experimental Assistant” (Sharetop Software Studio). 25 The orthogonal design included 9 tests with 4 parameters, and each parameter with 3 values, denoted as L 9 (3 4 ).…”

A topology optimization method for collaborative robot lightweight design based on orthogonal experiment and its applications

“…To solve this problem, a new topology optimization method defined as orthogonal experiment-based working conditions topology optimization (OEWC-TO) was proposed, where the extreme working conditions were determined by orthogonal experiment. 23,24 The rest of the article is organized as follows: Firstly, the basic principles and steps of the OEWC-TO method were described in the second section. And then, this method was applied to the lightweight of a 7 degree of freedom (DOF) upper-limb powered exoskeleton (ULPE), and the results were compared with those obtained by the EWC-TO method in the third section.…”