Cocoa Shell as Adsorbent for the Removal of Methylene Blue from Aqueous Solution: Kinetic and Equilibrium Study
Journal Title: Universal Journal of Environmental Research and Technology - Year 2011, Vol 1, Issue 1
Abstract
Methylene blue (MB) adsorption from an aqueous solution onto activated carbon prepared from cocoa (Theobroma cacao) shell has been studied experimentally using batch adsorption method. Adsorption kinetics and equilibrium were investigated as a function of initial dye concentration and contact time, pH and adsorbent dosage. Pseudo-first order, pseudo-second order and intraparticle diffusion models were used to examine the experimental data of different initial concentrations. Kinetics studies indicated that the adsorption followed pseudo -second order reaction. The high correlation coefficient of intraparticle diffusion model proves the pore diffusion plays a significant role for the adsorption of MB onto CSAC. Equilibrium data was analyzed using Langmuir, Freundlich and Tempkin isotherm models. The maximum monolayer adsorption capacity of Cocoa shell activated carbon (CSAC) was found to be 37.03 mg/g by using Langmuir model equation. On the basis of experimental results and the model parameters, it can be inferred that the activated carbon prepared from cocoa shell was effective for the removal of methylene blue from aqueous solution.
Authors and Affiliations
Theivarasu C. , Mylsamy S. and Sivakumar N.
Studies on Assessment of Heavy Metals in Samples Collected from Surrounding Area of Fly Ash Dumping Ground
Coal burning can organize trace elements by presenting them to the surrounding environment. When these elements leached out may cause the contamination of soil, surface water and groundwater. Disposal or any function o...
Estimation of Barium Toxicity Mitigating Efficacy of Amaranthus caudatus L.
Barium commonly used in the fireworks – cottage industry of this area is the predominant pollutant on growth, biochemical and enzymatic characteristics of Amaranthus caudatus L. a widely cultivated crop. This study is...
Average Annual Global Temperature and Cyclonic Disturbance over the North Indian Ocean
Tropical Cyclone activities over the North Indian Ocean (comprising Bay of Bengal and Arabian Sea) constitute one of the major natural disasters of our country. To understand the Tropical Cyclonic activities, estimatio...
Biosynthesis and Characterization of Manganese and Zinc Nanoparticles
The biosynthesis of metal nanoparticles is an expanding research area due to the potential applications for the ecofriendly development of novel technologies. Generally, nanoparticles are prepared by a variety of chemi...
Transport of Indicator Microorganisms from an Onsite Wastewater System to Adjacent Stream
The objective of this study was to determine the effectiveness of a residential onsite wastewater treatment system (OWS) in reducing E. coli and enterococci concentrations. Groundwater wells were installed upgradient a...