MC

Current Trends in Science and Technology

an Open Access Publication ISSN: 0976-9730 | 0976-9498

Botany (Plant Science)

Removal Efficiency of Cadmium (II) Ions from Aqueous Solution Using NTA Modified Pericarp of Gossypium Herbaceum L.: Isotherm, Kinetic and Thermodynamic Studies

Nikhil C. Teli
Environmental Sciences Research Laboratory, Department of Botany, Wilson College, Mumbai-400 007, Affiliated to University of Mumbai, Maharashtra, India
Satish A. Bhalerao
Environmental Sciences Research Laboratory, Department of Botany, Wilson College, Mumbai-400 007, Affiliated to University of Mumbai, Maharashtra, India
Online First: February 15, 2019
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Abstract

Environmental pollution has become a key focus of anxiety for all the nations worldwide, as not only the developing countries but developed nations as well are affected by and suffer from it. One prevalent phenomenon which has drawn much attention is the contamination of toxic metals in the aquatic environment. In this study the removal of cadmium [Cd (II)] ions from an aqueous solution using Nitrilotriacetic acid modified pericarp of Gossypium herbaceum L. (GhNTA) as an adsorbent, in batch condition was examined. NTA modified biosorbent was characterized by FTIR, ESEM-EDX and XRD analysis to support the adsorption of Cd(II) ions. Effect of various process parameters like pH, contact time, temperature, adsorbent dose, agitation rate and initial cadmium ion concentration was investigated using batch process to optimize conditions for maximum adsorption. Adsorption isotherm data for Cd(II) ions was analyzed with Freundlich, Langmuir, Temkin and DKR models. The kinetics studies results revealed that the adsorption followed pseudo-second- order kinetic model. Thermodynamic parameters such as ΔG°, ΔH° and ΔS° have been evaluated and it has been found that the sorption process was endothermic, spontaneous and proceeded with increased randomness.

  Submitted
Feb 15, 2019
Published
Feb 15, 2019
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  • Nikhil C. Teli
  • Satish A. Bhalerao

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