Describing the Adsorption of Pb\(^2\)+, Cu\(^2\)+, Ni\(^2\)+, Zn\(^2\)+, Cr\(^6\)+, and Cd\(^2\)+ from a Synthetic Acid Mine Drainage onto Chitosan Derivative in a Packed Bed Column: Analysis through Mathematical Modeling | chapter 8 | Chemical and Materials Sciences: Research Findings Vol. 3

Studies on the adsorption of metal ions in batch mode using modified chitosan beads have been reported by several authors in the literature. Consequently, packed bed column studies are performed for large-scale operations to generate data directly applicable to real wastewater treatment. For packed column adsorption, how to predict the breakthrough curve is a vital issue because it gives the necessary information for the design of a packed column adsorption system. This work investigated the application potential of chitosan derivatives for the uptake of Pb²⁺, Cu²⁺, Ni²⁺, Zn²⁺, Cr⁶⁺, and Cd²⁺ ions from aqueous solution in a packed bed adsorption column. On this note, the adsorbent was characterised by Fourier transform infrared spectroscopy (FTIR) and Scanning electron microscope (SEM), the effect of breakthrough parameters such as influent concentration (10, 20, and 30 mg/L), bed height (21, 28 and 35 cm) and feed flow rate (10, 15 and 20 ml/min) were determined. The experimental data were fitted to mathematical column models: Bed Depth Service Time (BDST), Yoon-Nelson, and the Thomas model. The adsorption of metal ions in a packed bed column is highly affected by the quantity of adsorbent applied. The flow rate in a continuous flow adsorption column plays a vital role as it controls the retention time during which the adsorbate contacts the adsorbent surface. The removal efficiency, breakthrough, and exhaustion time increased with an increase in bed height but decreased with an increase in flow rate and influent concentration. The mathematical models applied in this study were successful in describing experimental data. Desorption studies were performed with no loss in the mass of the beads, and the breakthrough and exhaustion times were found to be the same on reusing the beads.

 

Author (s) Details

Ephraim Igberase
Department of Chemical Engineering, Durban University of Technology, South Africa.

 

Innocentia G. Mkhize
Department of Chemical Engineering, Durban University of Technology, South Africa.

 

Please see the book here:- https://doi.org/10.9734/bpi/cmsrf/v3/4512

Determination of the Packing Factor of Geopolymerized Perlite from Lamba, Albay, Bicol in the Philippines, Its Development and Characterization and the Design of a Packed Column for the Absorption of Ammonia Gas | Chapter 6 | Current Approaches in Science and Technology Research Vol. 2

The transfer of one or more volatile organic component species from the gas phase to a liquid absorbent in a packed-bed column with one or more sections of packing materials is known as gas-liquid absorption. Perlite from Lamba, Albay, Bicol was used to make packaging material in this study. The study's goals are to create and analyze a packing material made of a geopolymer produced from perlite, as well as to construct a packed column for ammonia gas absorption. The optimal perlite-Na2SiO3 concentration, packing factor, and L/D ratio are determined in this work. Thermal stability, chemical resistance, and compressive strength were all tested on three perlite-Na2SiO3 concentrations (45 percent, 60 percent, and 75 percent wt. Na2SiO3). With a packing factor of 0.00175 ft-1, the 45 percent wt. Na2SiO3 showed the least weight loss and the best compressive strength, making this geopolymerized perlite a suitable packing material for gas absorption. Based on the findings, a 2.5 L/D packed column was built for the absorption of ammonia gas.

Author (s) Details

Dr. Lola Domnina Pestaño
Chemical Engineering Department, Faculty of Engineering, University of Santo Tomas, Philippines and Research Center for theNatural and Applied Sciences, University of Santo Tomas, Philippines.

Beatriz San Mateo
Chemical Engineering Department, Faculty of Engineering, University of Santo Tomas, Philippines.

Jervin Valorozo
Chemical Engineering Department, Faculty of Engineering, University of Santo Tomas, Philippines.

Ma. Niña Jasmer Yturralde
Chemical Engineering Department, Faculty of Engineering, University of Santo Tomas, Philippines

View Book : https://stm.bookpi.org/CASTR-V2/article/view/1213