Sorption Profile of Phosphorus Ions onto ZnO Nanorods Synthesized via Sonic Technique

Abstract

High surface area zinc oxide material in nanorod morphological structure was synthesized using an ultrasonic technique in the presence of polyvinyl pyrrolidone as stabilizing agent. The crystallite, morphology, and surface area of the prepared white powder material were identified using XRD, SEM, and BET techniques, respectively. X-ray analysis confirms the high purity of synthesized ZnO. The evaluated specific surface area of prepared ZnO was 16.7 m2/g; this value guarantees high efficiency for water purification. The feasibility of synthesized ZnO nanorods for phosphorus sorption from aqueous solution was established using batch technique. Nano-zinc oxide exhibits high efficiency for phosphorus removal; the equilibrium state was recorded within 90 minutes. The most effective hydrogen ion concentration of the polluted solution was recorded at pH = 1 for phosphorus decontamination. The equilibrium of phosphorus sorption onto ZnO nanorods was well explained using both Langmuir and Temkin isotherm models. The calculated maximum monolayer sorption capacity was 89 mg/g according to Langmuir isotherm at 27°C. In order to explain the phosphorus sorption mechanism onto the prepared ZnO nanorods, three simplified kinetic models of pseudo-first order, pseudo-second order, and intraparticle diffusion rate models were tested. Kinetics was well fitted by pseudo-second order kinetic model with a contribution of intraparticle diffusion.

In-situ Polymerization of Polyaniline/Polypyrrole Copolymer using Different Techniques

“…In the past, there was a difficulty to make a copolymer of aniline and pyrrole because of synthesis method for each of them [1]- [2]. Now, there are two main ways to synthesize a copolymer of aniline and pyrrole by chemical [3]- [7] or electrochemical [8]- [10]methods. Chemical oxidation process has been checked in previous studies where ammonium peroxydisulfate solution (APS) is used as oxidant [3]- [7].…”

Novel Magnetic Zinc Oxide Nanotubes for Phenol Adsorption: Mechanism Modeling

“…So, whenever the nano-size of materials decreases, their exclusive properties such as catalysts, photoactivity, adsorptive and their various motivating features and applications will be enhanced [ 1 ]. The application of nanotechnology in water and wastewater treatment processes provides an innovative treatment capability and guaranteed economic results [ 2 ]. The nanomaterials are characterized by their effectiveness and a high capacity for decontaminating pollutants from wastewater compared to their larger counterpart materials.…”

Effect of the Morphology of Tungsten Oxide Embedded in Sodium Alginate/Polyvinylpyrrolidone Composite Beads on the Photocatalytic Degradation of Methylene Blue Dye Solution

“…The pseudo-first-order model and the pseudo-second-order model are the most common kinetic models used. The pseudo-first-order equation was stated as follows [28],…”