Evaluation of Adsorption Kinetics and Equilibrium for the Removal of Benzene by Modified Diatomite

Abstract

In order to find alternative low‐cost adsorbents for volatile organic liquids, the effectiveness of nickel oxide nanoparticles‐modified diatomite (NONMD) in removing benzene was assessed. The impact of different operation parameters such as pH, contact time, initial benzene concentration, and adsorption dosage on the adsorption process was evaluated and optimum experimental conditions were identified. Surface area and morphology of the nanoparticles were characterized by scanning electron microscopy (SEM), Brunauer‐Emmett‐Teller (BET) isotherms, X‐ray diffraction (XRD), Fourier transform infrared (FTIR), and energy dispersive X‐ray (EDX) analysis. The isotherm and kinetics effect of the adsorbent were evaluated.

Experimental and Modeling Study of Organic Chloride Compounds Removal from Naphtha Fraction of Contaminated Crude Oil Using Sintered γ-Al2O3 Nanoparticles: Equilibrium, Kinetic, and Thermodynamic Analysis

“…The amount of adsorbed organic chlorides, q t (mg/g) at time t , was calculated by the following equation , where C 0 is the initial concentration of the organic chloride (mg/L), C t is the concentration of the organic chloride at specified time t (mg/L), V is the volume of the naphtha fraction (L), and m is the mass of adsorbent (g). Also, the adsorption capacity of sintered γ-Al 2 O 3 nanoparticles at equilibrium condition, q e (mg/g), was calculated by the following mass balance equation − where C e is the equilibrium concentration of the organic chloride compounds in the naphtha fraction (mg/L). The removal percentage (%) of organic chloride compounds from the naphtha distillate by the adsorption process can be calculated using the following equation: , …”

Adsorption Equilibrium and Kinetics of the Parex' Feed and Desorbent Streams from Batch Experiments

“…where K i is the Langmuir constant and q m i is the saturation capacity, although other adsorption models could have been used 37. The isotherm parameters determined at 177 °C are listed in Tab.…”

Optimally biosynthesized, PEGylated gold nanoparticles functionalized with quercetin and camptothecin enhance potential anti-inflammatory, anti-cancer and anti-angiogenic activities

“…In addition, plant based active principles such as curcumin has also been employed for the synthesis of AuNPs [ 22 , 23 ]. Since plant metabolites are economical, non-toxic [ 24 ] and accelerate the reduction of metal ions to MNPs, they show good potential to fulfill the high demand for MNPs for use in the biomedical applications [ 25 ]. Also they are suitable for surface functionalization due to their small size and stability [ 26 ].…”