A papyrus reed, as a type of unusable farming waste, was used as akind of low-cost biosorbent for the elimination a crude oil from produced waterthat was produced in an Al-Ahdab field, Iraq, in a batch stirred operationmode. Fourier transform infrared spectroscopy (FTIR) and scanning electronmicroscope (SEM) were used to characterize the biosorbent before and afteradsorption. Batch tests were employed as a function of the contact time,adsorbent dose, and the pH of the solution. The experimental results show atincreases the amount adsorbent dosage, pH and contact times, the removalefficiencies were increases and optimum condition was obtained at pH valueequal to 9, 5000 ppm adsorbent dose and 45 minutes contact time for removalabout 94.5% of crude oil, for test sample initial crude oil concentration 257.06ppm. Therefore it can be disposed of without environmental damage. The betterfitting for equilibrium sorption process data was satisfactorily by theFreundlich isotherm model with (R2= 0.9665) and the adsorption kinetics bestdescribed by a pseudo-second-order kinetic model.

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The densities () and kinematic viscosities (ν) which was converted to the absolute viscosity () from the product of the kinematic viscosity and the density of L-Glutamine have been measured at different temperatures 298.15, 303.15 and 313.15K in aqueous 20% (w/w) dimethyl formamide (DMF) under atmospheric pressure. The value of apparent molar volume (v), limiting apparent molar volume (v ͦ ) and viscosity data have been analyzed by using Jones-Dole equation, the Jones-Dole coefficients (A and B) were calculated and excess Gibbs free energy of activation of viscous flow (  ) has been obtained to throw light on the mechanism of viscous flow. The results were interpreted strong ion-solvent interactions in these systems and also structure-maker in 20% DMF + 80% water mixed solvents.