Application of raw Vigna subterranean husks as novel sorbent for abstraction of petroleum from contaminated waters

The potential of raw V. subterranean husks (RVSH) as a novel natural sorbent, and an environmentally friendly low-cost product for the cleanup petroleum from contaminated waters was investigated. Characterization sorbent accomplished with scanning electron microscope (SEM), Fourier transform infrared (FTIR), Brunauer–Emmett–Teller (BET) surface area analysis thermogravimetric (TGA). Batch sorption approach applied to assess impact dose, pH, initial concentration, temperature well time. Crude oil characterization disclosed light owing oAPI gravity 36.5°. Langmuir model offered superlative fit experimental data greater regression coefficient (R2) lower chi-square (χ2) sum squares errors (SSE) contrary Temkin, Freundlich, Scatchard models also produced maximum monolayer capacity 3.79 g/g. pseudo-second-order more appropriate kinetic considerations than first-order, intraparticle diffusion liquid film models, equilibrium time 70 min achieved. Thermodynamic presented endothermic, non-spontaneous physicochemical process improvement in randomness petroleum-RVSH interface. Recovery good 60.58% sorbate salvaged using n-hexane stripping agent, reusability achieved after each cycle sorption–desorption analysis. Therefore, is suitable management oil-contaminated water bodies.